US20100320754A1 - Reverse sliding seal for expandable tubular connections - Google Patents

Reverse sliding seal for expandable tubular connections Download PDF

Info

Publication number
US20100320754A1
US20100320754A1 US12/855,422 US85542210A US2010320754A1 US 20100320754 A1 US20100320754 A1 US 20100320754A1 US 85542210 A US85542210 A US 85542210A US 2010320754 A1 US2010320754 A1 US 2010320754A1
Authority
US
United States
Prior art keywords
rib
pin
groove
expandable
box member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/855,422
Inventor
Ghazi J. Hashem
Simon J. Harrall
Lev M. Ring
Merle E. Evans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weatherford Technology Holdings LLC
Original Assignee
Weatherford Lamb Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weatherford Lamb Inc filed Critical Weatherford Lamb Inc
Priority to US12/855,422 priority Critical patent/US20100320754A1/en
Assigned to WEATHERFORD/LAMB, INC. reassignment WEATHERFORD/LAMB, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EVANS, MERLE E., RING, LEV M., HARRALL, SIMON J., HASHEM, GHAZI J.
Publication of US20100320754A1 publication Critical patent/US20100320754A1/en
Assigned to WEATHERFORD TECHNOLOGY HOLDINGS, LLC reassignment WEATHERFORD TECHNOLOGY HOLDINGS, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEATHERFORD/LAMB, INC.
Abandoned legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001Screw-threaded joints; Forms of screw-threads for such joints with conical threads
    • F16L15/003Screw-threaded joints; Forms of screw-threads for such joints with conical threads with sealing rings
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • E21B17/08Casing joints
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02Subsoil filtering
    • E21B43/10Setting of casings, screens, liners or the like in wells
    • E21B43/103Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02Subsoil filtering
    • E21B43/10Setting of casings, screens, liners or the like in wells
    • E21B43/103Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • E21B43/106Couplings or joints therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/02Screw-threaded joints; Forms of screw-threads for such joints allowing substantial longitudinal adjustment by use of a long screw-threaded part
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/04Screw-threaded joints; Forms of screw-threads for such joints with additional sealings

Definitions

  • the present invention relates to threaded tubular connections particularly useful in the oil and gas industry.
  • the invention relates to an expandable tubular threaded connection having a high bearing pressure metal-to-metal seal formed as a result of the tubular expansion process that allows the threaded connection to withstand high pressure after expansion.
  • the initial bore hole size at the surface must be sufficiently large to allow for a large diameter casing.
  • the large initial bore hole size requires increased drilling time and increased material costs, including increased use of materials such as drilling mud and casing cement.
  • expandable tubulars addresses these shortcomings in the conventional casing/liner/screen hanging operations.
  • a well bore of virtually uniform diameter i.e., a monobore well.
  • the expandable tubulars are radially expanded by various means known in the art, including, but not limited to, pulling or pushing fixed diameter expansion cones through the tubular, extruding the tubular off of a hydraulically-actuated expansion tool, or rotating an expansion tool while pulling or pushing it through the tubular.
  • the tubular segments to be expanded are typically coupled together using threaded connections in which the male end, or pin member, of one tubular is threadably connected to the female end, or box member, of an adjacent tubular.
  • the ends of the adjacent tubulars may have a pin member at each end, with the box member being formed by a short coupling threaded onto one of the pin members.
  • a conventional threaded connection is made up, the nose of the pin member is in contact with the back of the box member.
  • This threaded engagement between properly secured pin and box members creates a conventional tubular joint that effectively maintains a secure mechanical connection that holds the tubular segments together and that effectively seals the internal tubular area from the formation and vice versa.
  • the sealing ability of the threaded engagement is augmented through the use of Teflon® rings or other deformable seal rings entrapped in the thread area.
  • the elastomeric seal ring of a conventional threaded connection is carried in an annular groove formed in either the pin or box member, or both.
  • the elastomeric seal ring creates a seal when it is “energized” by being radially compressed between the engaged pin and box members during make up of the connection. Radial expansion of the threaded connection, however, changes the radial compression of the elastomeric seal ring, thereby potentially allowing leakage through the threaded connection.
  • the radial expansion of the tubular string causes the pin and box members to undergo axial movement.
  • the amount of axial movement experienced by the pin and box members is dependent on numerous factors, including, but not limited to, the amount of radial expansion of the tubular string, the geometry of the threaded connection (the pin is thinner towards the pin end and the box is thinner towards the face of the box), and the type of expansion tool utilized to expand the connection (i.e., use of a rotary expansion tool versus pulling or pushing an expansion tool through the expandable tubulars).
  • the pin nose tends to pull away and separate from the back of the box.
  • the resulting gap formed between the pin nose and the back of the box as a result of the axial movement of the pin nose creates a potential source of leakage through the threaded connection during and after the expansion process.
  • the present invention is a unique expandable threaded connection in which expansion of the tubulars creates a high pressure seal between the pin and box members.
  • the invention utilizes a “groove” in a surface of the box member and a corresponding “rib” on the pin nose. The radial expansion of the tubulars via an expansion cone or via hydraulic pressure causes the pin to become shorter in length, thereby causing the pin nose to retract from the back of the box member. As the pin nose retracts, the rib on the pin nose moves backward until a portion of the rib contacts a portion of the groove in the box member.
  • the point of contact between the rib and the groove creates a metal-to-metal seal between the pin and box members. Because the point of contact between the rib and the groove is a relatively small area, the force acting on the point of contact generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars and, thus, generates a high pressure seal. Additionally, the contact between the rib and the groove may help to prevent further retracting of the pin nose from the back of the box.
  • the portion of the rib and the portion of the groove that contact when the pin nose retracts can be designed with a reverse trapping angle that forces the nose of the pin member radially outwardly (i.e., toward the outer diameter of the expandable tubular string) as it retracts away from the back of the box member during the expansion process.
  • the reverse trapping angle between the rib and groove forces the pin to remain engaged with the box.
  • an expandable elastomeric sealing ring can be inserted in a groove in the back of the box member such that when certain fluids contact the sealing ring as the pin nose retracts from the back of the box member, the sealing ring expands to fill the gap formed by the pin retracting from the box member thereby forming a secondary resilient seal that aids in containing the internal pressure until the primary metal-to-metal seal is completely formed.
  • FIG. 1 is a side view of an expandable threaded connection for expandable tubulars according to one embodiment of the present invention prior to expansion of the tubulars.
  • FIG. 2 is an enlarged view of the pin nose and back of the box member of FIG. 1 showing the raised rib on the pin nose and the corresponding groove in the box member prior to expansion of the tubulars.
  • FIG. 3 is an enlarged view of the pin nose and back of the box member of FIG. 1 showing the raised rib on the pin nose and the corresponding groove in the box member after expansion of the tubulars.
  • FIG. 4 is a side view of an expandable threaded connection for expandable tubulars according to one embodiment of the present invention in which an expandable elastomeric sealing ring is placed in a groove in the back of the box member of the threaded connection.
  • FIG. 5 is a side view of the pin nose and back of the box member of an expandable tubular connection in accordance with an alternative embodiment of the present invention.
  • FIG. 5 shows the raised rib on the pin nose and the corresponding groove in the box member prior to expansion of the tubulars.
  • FIG. 6 is a side view of the expandable threaded connection of FIG. 5 showing the raised rib on the pin nose and the corresponding groove in the box member after expansion of the tubulars.
  • FIG. 7 is a side view of the pin nose and back of the box member of an expandable tubular connection in accordance with an alternative embodiment of the present invention.
  • FIG. 7 shows the raised rib on the pin nose and the corresponding groove in the box member prior to expansion of the tubulars.
  • FIG. 8 is a side view of the expandable threaded connection of FIG. 7 showing the raised rib on the pin nose and the corresponding groove in the box member after expansion of the tubulars.
  • FIG. 1 an expandable threaded connection according to the present invention is shown fully made up.
  • the expandable threaded connection of FIG. 1 includes pin member 10 and box member 20 on adjacent segments of expandable tubulars.
  • Pin member 10 includes helical threads 12 extending along its length.
  • Box member 20 includes helical mating threads 24 that are shaped and sized to mate with helical threads 12 respectively on pin member 10 during make-up of a threaded connection between separate tubular joints or segments.
  • the interengaged threads of pin member 10 with the corresponding threads of box member 20 on an adjacent joint provide a threaded connection upon final make-up. In this way, multiple segments of expandable tubulars can be threadably connected.
  • the helical threads can be machined on plain end tubulars, tubulars with both ends upset, tubulars with one plain end and one upset end, or other connection types as typically used in the oil and gas industry. Additionally, the threads can be selected from a broad range of thread types used in the industry. One of skill in the art can appreciate that the present invention is not limited in application to only certain kinds of tubular ends or thread types.
  • the thread type is a generally reverse angle hooked type thread, or a modified profile thread as is disclosed and claimed in U.S. Pat. No. 6,767,035 dated Jul. 27, 2004. These threads are preferred for their ability to keep the pin and box members from separating during the expansion process.
  • the expandable threaded connection of FIG. 1 is shown prior to radial expansion of the expandable tubulars.
  • pin nose end 31 comprising the end of the pin nose 30 of pin member 10
  • box surface 32 located at the back of the box member 20 .
  • FIG. 1 shows a preformed rib 14 on pin nose 30 residing in groove 28 formed in box member 20 .
  • Rib 14 is described as preformed in that it is preformed on pin nose 30 prior to make-up of the threaded connection and, thus, is not created during the expansion process.
  • the leading “edge” of rib 14 i.e., the edge nearest pin nose end 31
  • the back “edge” of groove 28 i.e., the edge closest to box surface 32
  • FIG. 2 shows an enlarged view of pin member 10 and box member 20 of FIG. 1 in the area of rib 14 and groove 28 prior to expansion of the tubulars.
  • the leading edge of rib 14 is in contact with the back edge of groove 28 when the connection is made up.
  • groove 28 in box member 20 is slightly larger than rib 14 .
  • FIG. 3 shows an enlarged view of pin member 10 and box member 20 of FIG. 1 in the area of rib 14 and groove 28 after expansion of the tubulars.
  • the expansion of the tubulars is accomplished by moving or displacing an expansion cone or other expansion tool through the tubulars.
  • the radial expansion of the tubulars causes pin nose 30 to shorten, thereby causing pin nose end 31 to “retract” away from the box surface 32 .
  • an axial gap (a) is formed between pin nose end 31 and box surface 32 .
  • rib 14 moves backward (i.e., toward the left in FIG. 3 ) until the trailing edge of rib 14 (i.e., the edge of rib 14 furthest from pin nose end 31 ) contacts the front edge of the groove 28 (i.e., the edge of groove 28 furthest from box surface 32 ).
  • the point of contact between the trailing edge of rib 14 and the front edge of groove 28 creates a metal-to-metal seal between pin member 10 and box member 20 .
  • this point of contact between rib 14 and groove 28 is a relatively small area, the axial force acting on the point of contact generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars.
  • the bearing pressure of the metal-to-metal seal formed by the contact of rib 14 with groove 28 prevents well fluids from migrating past this point of contact. As such, the expansion process creates a high-pressure seal. Additionally, the contact between rib 14 and groove 28 resists or impedes further retracting of the pin nose 30 from the box surface 32 , thereby limiting the size of axial gap (a) created during the expansion process.
  • a resilient seal 40 can be placed in the back of the box member 20 near box surface 32 , as shown in FIG. 4 .
  • Seal 40 helps seal the threaded connection when the connection is fully made up as well as after expansion of the threaded connection.
  • pin nose end 31 will engage seal 40 to help seal against well fluids migrating into the threads of the threaded connection.
  • seal 40 helps block any fluid paths through the threaded connection created by the resulting axial gap (a) (shown in FIG. 3 ) that is formed between the pin nose end 31 and the box surface 32 .
  • seal 40 can generally be made of any suitable resilient sealing material known in the art, in the preferred embodiment, seal 40 can be made of an “expanding” or “swelling” material that expands or swells when it is contacted by certain fluids. Such a material is disclosed in published United States Patent Application 2004/0017081 A1, which is incorporated herein by reference. More specifically, as fluids enter the axial gap (a) created during the expansion operation, they will contact seal 40 . Such contact causes seal 40 to expand or swell, thereby substantially filling the axial gap (a) and preventing the fluids from migrating past seal 40 . Seal 40 is a secondary resilient seal that contains the pressure while the metal-to-metal primary seal is being formed.
  • FIG. 5 shows an alternative embodiment of the present invention showing an alternative design for pin nose 50 .
  • pin nose 50 is configured with a triangle shaped preformed rib 52 that has a vertical, or substantially vertical, wall 54 at the trailing edge of rib 52 (i.e., the edge furthest from pin nose end 51 ).
  • Groove 60 is similarly shaped to mate with rib 52 when the threaded connection is made up.
  • Groove 60 in box member 20 has a vertical, or substantially vertical, wall 62 at the leading edge of groove 60 (i.e., the edge furthest from box surface 61 ).
  • pin nose end 51 is in contact with, or very nearly in contact with, box surface 61 at the back of the box member 20 prior to expansion of the threaded connection.
  • the slanted wall of rib 52 is in contact with the slanted wall of groove 60 , and a small axial gap (a) exists between wall 54 of rib 52 and wall 62 of groove 60 .
  • rib 52 moves backward (i.e., toward the left in FIG. 6 ) until the wall 54 of rib 52 contacts wall 62 of groove 60 .
  • the contact between wall 54 of rib 52 and wall 62 of groove 60 creates a metal-to-metal seal between pin member 10 and box member 20 .
  • the axial force acting on the point of contact between walls 54 and 62 generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars.
  • the bearing pressure of the metal-to-metal seal so formed prevents well fluids from migrating past the point of contact between walls 54 and 62 .
  • the expansion process creates a high-pressure seal.
  • the contact between walls 54 and 62 resists or impedes further retracting of the pin nose end 51 from the box surface 61 , thereby limiting the size of axial gap (a) created during the expansion process.
  • a resilient seal 70 can be placed in a groove in the threaded portion of box member 20 between the metal-to-metal seal formed by the contact of walls 54 and 62 and the interengaged threads of the pin member 10 and box member 20 (as shown in FIGS. 5 and 6 ).
  • the resilient seal 70 can be placed in a groove in the threaded portion of pin member 10 .
  • FIG. 7 shows an alternative embodiment of the present invention showing an alternative design for pin nose 80 .
  • pin nose 80 is configured with a rib 82 that is designed with a slanted top wall 85 , a vertical (or substantially vertical) front wall 83 , and an angled rear wall 84 .
  • Groove 90 in box member 20 is similarly shaped to mate with rib 82 when the threaded connection is made up.
  • Groove 90 has an angled rear wall 92 at the leading edge of groove 90 (the wall furthest from box surface 91 ).
  • pin nose end 81 is in contact with, or very nearly in contact with, box surface 91 at the back of the box member 20 prior to expansion of the threaded connection.
  • the slanted top wall 85 of rib 82 is in contact with the slanted wall of groove 90 , and a small axial gap (a) exists between angled rear wall 84 of rib 82 and angled rear wall 92 of groove 90 .
  • rib 82 moves backward (i.e., toward the left in FIG. 8 ) until the angled rear wall 84 of rib 82 contacts angled rear wall 92 of groove 90 .
  • the contact between angled rear wall 84 of rib 82 and angled rear wall 92 of groove 90 creates a metal-to-metal seal between pin member 10 and box member 20 .
  • the axial force acting on the point of contact between angled rear wall 84 and angled rear wall 92 generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars.
  • the sealing ability of the expandable connection is enhanced by the “slanting” of angled rear walls 84 and 92 .
  • a reverse trapping angle is incorporated into the sliding seal of the present invention.
  • angled rear wall 84 and angled rear wall 92 have been machined with substantially equal trapping angles.
  • the trapping angle is preferably in the range of 15-25 degrees. The above range of degrees for the reverse trapping angle of angled rear wall 84 and angled rear wall 92 is given by way of example only.
  • the reverse trapping angle incorporated into the sliding seal of the present invention is designed to force pin nose 80 outwardly as angled rear wall 84 is forced into contact with angled rear wall 92 .
  • pin nose 80 is forced in an outwardly direction, the bearing pressure between slanted top wall 85 of rib 82 and the corresponding slanted wall of groove 90 is increased.
  • a larger trapping angle will cause higher bearing pressure between those surfaces.
  • Both the increased bearing pressure between those surfaces and the increased bearing pressure caused by the forces acting on the surfaces at the trapping angles will produce a high strength metal-to-metal seal between pin member 10 and box member 20 .
  • the bearing pressure of the metal-to-metal seal so formed prevents fluids from migrating past the point of contact between angled rear wall 84 and angled rear wall 92 . As such, the expansion process creates a high-pressure seal.
  • angled rear wall 84 and angled rear wall 92 resists or impedes further retracting of the pin nose end 81 from the box surface 91 , thereby limiting the size of axial gap (a) created during the expansion process. Further, such contact helps keep the threads of the pin member 10 engaged with the threads of the box member 20 .
  • a resilient seal 70 can be placed in a groove in the box member 20 between the metal-to-metal seal formed by the contact of angled rear wall 84 and angled rear wall 92 and the interengaged threads of the pin member 10 and box member 20 (as shown in FIGS. 7 and 8 ).
  • the sliding seal of the present invention can be formed when the tubulars are expanded by any known tubular expansion method, including rotary expansion techniques. For example, if the tubulars are expanded by moving an expansion cone through the tubulars, the sliding seal will be created as discussed above. If the tubulars are expanded by a rotary expansion tool, the pin tends to increase in length, thereby causing the pin nose to move into engagement with (or toward) the back of the box member during the expansion process. In such a situation, the pin and box members prior to expansion would look similar to FIG. 3 . As the connection is expanded, the rib on the pin nose will move forward until a portion of the rib contacts a portion of the groove in the box member (similar to what is shown in FIG. 2 ).
  • the sliding seal of the present invention can be utilized on tubulars that are not connected by traditional threaded means.
  • the sliding seal of the present invention can be utilized on tubulars to be expanded that are made-up through other connection means such as the method of joining expandable tubulars disclosed in United States Published Patent Application 2004/0069498 A1 published on Apr. 15, 2004, which is incorporated herein by reference.
  • the rib and groove or multiple rib and groove combinations will be located on concentric sections of the tubulars such that the expansion process creates the seal as explained above.

Abstract

An expandable threaded connection between segments of expandable tubulars that provides a high bearing pressure seal at a specific area along the pin and box members is disclosed. The invention utilizes a “groove” in a surface of the box member and a corresponding “rib” on the pin nose. The radial expansion of the tubulars causes the pin to become shorter in length, thereby causing the pin nose to retract from the back of the box member. As the pin nose retracts, the rib on the pin nose moves backward until a portion of the rib contacts a portion of the groove in the box member. The point of contact between the rib and the groove creates a metal-to-metal seal between the pin and box members. Because the point of contact between the rib and the groove is a relatively small area, the force acting on the point of contact generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars and, thus, generates a high pressure seal.

Description

    CROSS-REFERENCE TO RELATED APPLICATION
  • The application is a divisional of and claims the benefit of U.S. patent application Ser. No. 11/201,499, filed Aug. 11, 2005, entitled “REVERSE SLIDING SEAL FOR EXPANDABLE TUBULAR CONNECTIONS,” naming Ghazi J. Hashem, Simon J. Harrall, Lev M. Ring, and Merle E. Evans as inventors, which is hereby incorporated by reference in its entirety.
  • FIELD OF THE INVENTION
  • The present invention relates to threaded tubular connections particularly useful in the oil and gas industry. In particular, the invention relates to an expandable tubular threaded connection having a high bearing pressure metal-to-metal seal formed as a result of the tubular expansion process that allows the threaded connection to withstand high pressure after expansion.
  • BACKGROUND OF THE INVENTION
  • In the conventional drilling of an oil and gas well, a series of tubulars, typically strings of casing, liner, and/or screen segments connected together, are sequentially installed in the well bore until the depth of the producing zone of the formation is reached. Standard practice requires that each succeeding string of tubulars placed in the well bore has an outside diameter smaller than the preceding string of tubulars and/or bore hole such that the tubular segments can be passed through the preceding string of tubulars and/or bore hole to their downhole location. The reduction in the diameter of each successive string of tubular segments placed in the well bore results in a significant reduction in the diameter of the tubular through which hydrocarbons can be carried to the surface. More importantly, to achieve the desired tubular diameter in the producing zone, the initial bore hole size at the surface must be sufficiently large to allow for a large diameter casing. The large initial bore hole size requires increased drilling time and increased material costs, including increased use of materials such as drilling mud and casing cement.
  • The technology of expandable tubulars addresses these shortcomings in the conventional casing/liner/screen hanging operations. Through radial expansion of successive strings of tubular segments until the outer wall of those segments contacts the inner wall of the host pipe, it is possible to create a tight fit between the expandable tubulars and the host pipe that holds the tubular segments in place and creates an annular seal. Further, it is possible to achieve a well bore of virtually uniform diameter (i.e., a monobore well). The expandable tubulars are radially expanded by various means known in the art, including, but not limited to, pulling or pushing fixed diameter expansion cones through the tubular, extruding the tubular off of a hydraulically-actuated expansion tool, or rotating an expansion tool while pulling or pushing it through the tubular.
  • The tubular segments to be expanded are typically coupled together using threaded connections in which the male end, or pin member, of one tubular is threadably connected to the female end, or box member, of an adjacent tubular. Alternatively, the ends of the adjacent tubulars may have a pin member at each end, with the box member being formed by a short coupling threaded onto one of the pin members. When a conventional threaded connection is made up, the nose of the pin member is in contact with the back of the box member. This threaded engagement between properly secured pin and box members creates a conventional tubular joint that effectively maintains a secure mechanical connection that holds the tubular segments together and that effectively seals the internal tubular area from the formation and vice versa. Often, the sealing ability of the threaded engagement is augmented through the use of Teflon® rings or other deformable seal rings entrapped in the thread area.
  • Problems have arisen, however, at the threaded connection point between tubular segments during and after expansion when using conventional threaded tubular connections and seals currently available in the industry. When the tubular string is radially expanded, a conventional threaded connection changes dimensionally in a way that can prevent the pin and box members from maintaining proper engagement and sealing. The radial expansion of a conventional threaded connection can cause the pin and box members to radially separate, thereby causing the seal of the threaded engagement to fail. In effect, the radial expansion disables the seal that is created by the metal-to-metal engagement of the sealing surfaces of the pin and box members, and degrades or lowers the pressure holding integrity of the connections. The threaded connection point thus becomes a source of potential leaks during and after expansion of the tubular string.
  • Conventional threaded connections that use an elastomeric seal ring between the engaged surfaces of the pin and box members may also leak when the threaded connection is radially expanded. Typically, the elastomeric seal ring of a conventional threaded connection is carried in an annular groove formed in either the pin or box member, or both. The elastomeric seal ring creates a seal when it is “energized” by being radially compressed between the engaged pin and box members during make up of the connection. Radial expansion of the threaded connection, however, changes the radial compression of the elastomeric seal ring, thereby potentially allowing leakage through the threaded connection.
  • Additionally, the radial expansion of the tubular string causes the pin and box members to undergo axial movement. The amount of axial movement experienced by the pin and box members is dependent on numerous factors, including, but not limited to, the amount of radial expansion of the tubular string, the geometry of the threaded connection (the pin is thinner towards the pin end and the box is thinner towards the face of the box), and the type of expansion tool utilized to expand the connection (i.e., use of a rotary expansion tool versus pulling or pushing an expansion tool through the expandable tubulars). For example, in the case of moving or displacing an expansion “cone” through the expandable tubulars, the pin nose tends to pull away and separate from the back of the box. The resulting gap formed between the pin nose and the back of the box as a result of the axial movement of the pin nose creates a potential source of leakage through the threaded connection during and after the expansion process.
  • As deeper wells and more difficult completions are attempted using expandable tubulars, the threaded connections that hold the expandable tubulars together must address these known problems and must be able to accommodate the higher pressures faced in such applications. What is needed is a threaded connection for expandable tubulars that enhances the pressure integrity of the connections so that they will withstand high pressure after expansion, while not weakening the coupling strength of the connections. It is an object of the present invention to provide an apparatus and method for creating a threaded connection between segments of expandable tubulars that enhances the pressure integrity of the expanded connection while not weakening the coupling strength of the connection. Those and other objectives will become apparent to those of skill in the art from a review of the specification below.
  • SUMMARY OF THE INVENTION
  • An expandable threaded connection between segments of expandable tubulars that provides a high bearing pressure seal between the pin and box members is disclosed. The present invention is a unique expandable threaded connection in which expansion of the tubulars creates a high pressure seal between the pin and box members. The invention utilizes a “groove” in a surface of the box member and a corresponding “rib” on the pin nose. The radial expansion of the tubulars via an expansion cone or via hydraulic pressure causes the pin to become shorter in length, thereby causing the pin nose to retract from the back of the box member. As the pin nose retracts, the rib on the pin nose moves backward until a portion of the rib contacts a portion of the groove in the box member. The point of contact between the rib and the groove creates a metal-to-metal seal between the pin and box members. Because the point of contact between the rib and the groove is a relatively small area, the force acting on the point of contact generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars and, thus, generates a high pressure seal. Additionally, the contact between the rib and the groove may help to prevent further retracting of the pin nose from the back of the box.
  • In the case of expansion of tubulars via a rotary expansion method (such as is disclosed in pending U.S. application Ser. No. 10/455,655 filed on Jun. 5, 2003, incorporated herein by reference), the pin tends to increase in length, thereby causing the pin nose to move into engagement with (or toward) the back of the box member. In such a situation, the rib on the pin nose moves forward until a portion of the rib contacts a portion of the groove in the box member. Again, the point of contact between the rib and the groove creates a metal-to-metal seal between the pin and box members.
  • In an alternative embodiment, the portion of the rib and the portion of the groove that contact when the pin nose retracts can be designed with a reverse trapping angle that forces the nose of the pin member radially outwardly (i.e., toward the outer diameter of the expandable tubular string) as it retracts away from the back of the box member during the expansion process. The reverse trapping angle between the rib and groove forces the pin to remain engaged with the box.
  • In an alternative embodiment of the invention, an expandable elastomeric sealing ring can be inserted in a groove in the back of the box member such that when certain fluids contact the sealing ring as the pin nose retracts from the back of the box member, the sealing ring expands to fill the gap formed by the pin retracting from the box member thereby forming a secondary resilient seal that aids in containing the internal pressure until the primary metal-to-metal seal is completely formed.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The following figures form part of the present specification and are included to further demonstrate certain aspects of the present invention. The invention may be better understood by reference to one or more of these figures in combination with the detailed description of specific embodiments presented herein.
  • FIG. 1 is a side view of an expandable threaded connection for expandable tubulars according to one embodiment of the present invention prior to expansion of the tubulars.
  • FIG. 2 is an enlarged view of the pin nose and back of the box member of FIG. 1 showing the raised rib on the pin nose and the corresponding groove in the box member prior to expansion of the tubulars.
  • FIG. 3 is an enlarged view of the pin nose and back of the box member of FIG. 1 showing the raised rib on the pin nose and the corresponding groove in the box member after expansion of the tubulars.
  • FIG. 4 is a side view of an expandable threaded connection for expandable tubulars according to one embodiment of the present invention in which an expandable elastomeric sealing ring is placed in a groove in the back of the box member of the threaded connection.
  • FIG. 5 is a side view of the pin nose and back of the box member of an expandable tubular connection in accordance with an alternative embodiment of the present invention. FIG. 5 shows the raised rib on the pin nose and the corresponding groove in the box member prior to expansion of the tubulars.
  • FIG. 6 is a side view of the expandable threaded connection of FIG. 5 showing the raised rib on the pin nose and the corresponding groove in the box member after expansion of the tubulars.
  • FIG. 7 is a side view of the pin nose and back of the box member of an expandable tubular connection in accordance with an alternative embodiment of the present invention. FIG. 7 shows the raised rib on the pin nose and the corresponding groove in the box member prior to expansion of the tubulars.
  • FIG. 8 is a side view of the expandable threaded connection of FIG. 7 showing the raised rib on the pin nose and the corresponding groove in the box member after expansion of the tubulars.
  • DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
  • The following examples are included to demonstrate preferred embodiments of the invention. It should be appreciated by those of skill in the art that the techniques disclosed in the examples which follow represent techniques discovered by the inventors to function well in the practice of the invention, and thus can be considered to constitute preferred modes for its practice. However, those of skill in the art should, in light of the present disclosure, appreciate that many changes can be made in the specific embodiments which are disclosed and still obtain a like or similar result without departing from the spirit and scope of the invention.
  • Referring to FIG. 1, an expandable threaded connection according to the present invention is shown fully made up. The expandable threaded connection of FIG. 1 includes pin member 10 and box member 20 on adjacent segments of expandable tubulars. Pin member 10 includes helical threads 12 extending along its length. Box member 20 includes helical mating threads 24 that are shaped and sized to mate with helical threads 12 respectively on pin member 10 during make-up of a threaded connection between separate tubular joints or segments. The interengaged threads of pin member 10 with the corresponding threads of box member 20 on an adjacent joint provide a threaded connection upon final make-up. In this way, multiple segments of expandable tubulars can be threadably connected.
  • The helical threads can be machined on plain end tubulars, tubulars with both ends upset, tubulars with one plain end and one upset end, or other connection types as typically used in the oil and gas industry. Additionally, the threads can be selected from a broad range of thread types used in the industry. One of skill in the art can appreciate that the present invention is not limited in application to only certain kinds of tubular ends or thread types. In the preferred embodiment, the thread type is a generally reverse angle hooked type thread, or a modified profile thread as is disclosed and claimed in U.S. Pat. No. 6,767,035 dated Jul. 27, 2004. These threads are preferred for their ability to keep the pin and box members from separating during the expansion process.
  • The expandable threaded connection of FIG. 1 is shown prior to radial expansion of the expandable tubulars. When the expandable threaded connection is made up, pin nose end 31 (comprising the end of the pin nose 30 of pin member 10) and box surface 32 (located at the back of the box member 20) are in contact, or very nearly in contact, when the expandable threaded connection is made up.
  • FIG. 1 shows a preformed rib 14 on pin nose 30 residing in groove 28 formed in box member 20. Rib 14 is described as preformed in that it is preformed on pin nose 30 prior to make-up of the threaded connection and, thus, is not created during the expansion process. As shown in FIG. 1, the leading “edge” of rib 14 (i.e., the edge nearest pin nose end 31) is in contact with the back “edge” of groove 28 (i.e., the edge closest to box surface 32) when the connection is made up. The point of contact between the leading edge of rib 14 and the back edge of groove 28 can form a metal-to-metal seal when the connection is made up.
  • FIG. 2 shows an enlarged view of pin member 10 and box member 20 of FIG. 1 in the area of rib 14 and groove 28 prior to expansion of the tubulars. As can be seen in FIG. 2, the leading edge of rib 14 is in contact with the back edge of groove 28 when the connection is made up. As can also be seen in FIG. 2, groove 28 in box member 20 is slightly larger than rib 14.
  • FIG. 3 shows an enlarged view of pin member 10 and box member 20 of FIG. 1 in the area of rib 14 and groove 28 after expansion of the tubulars. In the preferred embodiment, the expansion of the tubulars is accomplished by moving or displacing an expansion cone or other expansion tool through the tubulars. As the expansion cone is moved through the tubulars, the radial expansion of the tubulars causes pin nose 30 to shorten, thereby causing pin nose end 31 to “retract” away from the box surface 32. As a result of pin nose 30 retracting, an axial gap (a) is formed between pin nose end 31 and box surface 32.
  • As the pin nose 30 retracts, rib 14 moves backward (i.e., toward the left in FIG. 3) until the trailing edge of rib 14 (i.e., the edge of rib 14 furthest from pin nose end 31) contacts the front edge of the groove 28 (i.e., the edge of groove 28 furthest from box surface 32). The point of contact between the trailing edge of rib 14 and the front edge of groove 28 creates a metal-to-metal seal between pin member 10 and box member 20.
  • Because this point of contact between rib 14 and groove 28 is a relatively small area, the axial force acting on the point of contact generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars. The bearing pressure of the metal-to-metal seal formed by the contact of rib 14 with groove 28 prevents well fluids from migrating past this point of contact. As such, the expansion process creates a high-pressure seal. Additionally, the contact between rib 14 and groove 28 resists or impedes further retracting of the pin nose 30 from the box surface 32, thereby limiting the size of axial gap (a) created during the expansion process.
  • To augment the sealing capability of the threaded connection, a resilient seal 40 can be placed in the back of the box member 20 near box surface 32, as shown in FIG. 4. Seal 40 helps seal the threaded connection when the connection is fully made up as well as after expansion of the threaded connection. When the connection is fully made up, pin nose end 31 will engage seal 40 to help seal against well fluids migrating into the threads of the threaded connection. When the pin nose end 31 retracts during the expansion operation, seal 40 helps block any fluid paths through the threaded connection created by the resulting axial gap (a) (shown in FIG. 3) that is formed between the pin nose end 31 and the box surface 32.
  • While seal 40 can generally be made of any suitable resilient sealing material known in the art, in the preferred embodiment, seal 40 can be made of an “expanding” or “swelling” material that expands or swells when it is contacted by certain fluids. Such a material is disclosed in published United States Patent Application 2004/0017081 A1, which is incorporated herein by reference. More specifically, as fluids enter the axial gap (a) created during the expansion operation, they will contact seal 40. Such contact causes seal 40 to expand or swell, thereby substantially filling the axial gap (a) and preventing the fluids from migrating past seal 40. Seal 40 is a secondary resilient seal that contains the pressure while the metal-to-metal primary seal is being formed.
  • FIG. 5 shows an alternative embodiment of the present invention showing an alternative design for pin nose 50. As shown in FIG. 5, pin nose 50 is configured with a triangle shaped preformed rib 52 that has a vertical, or substantially vertical, wall 54 at the trailing edge of rib 52 (i.e., the edge furthest from pin nose end 51). Groove 60 is similarly shaped to mate with rib 52 when the threaded connection is made up. Groove 60 in box member 20 has a vertical, or substantially vertical, wall 62 at the leading edge of groove 60 (i.e., the edge furthest from box surface 61).
  • As shown in FIG. 5, when the threaded connection is fully made up, pin nose end 51 is in contact with, or very nearly in contact with, box surface 61 at the back of the box member 20 prior to expansion of the threaded connection. In this position, the slanted wall of rib 52 is in contact with the slanted wall of groove 60, and a small axial gap (a) exists between wall 54 of rib 52 and wall 62 of groove 60.
  • When an expansion cone is moved through the tubulars, the radial expansion of the tubulars causes pin nose 50 to shorten, thereby causing pin nose end 51 to “retract” away from box surface 61. As a result of pin nose end 51 retracting, an axial gap (a) is formed between pin nose end 51 and box surface 61 (as shown in FIG. 6).
  • As the pin nose 50 retracts, rib 52 moves backward (i.e., toward the left in FIG. 6) until the wall 54 of rib 52 contacts wall 62 of groove 60. The contact between wall 54 of rib 52 and wall 62 of groove 60 creates a metal-to-metal seal between pin member 10 and box member 20. The axial force acting on the point of contact between walls 54 and 62 generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars. The bearing pressure of the metal-to-metal seal so formed prevents well fluids from migrating past the point of contact between walls 54 and 62. As such, the expansion process creates a high-pressure seal. Additionally, the contact between walls 54 and 62 resists or impedes further retracting of the pin nose end 51 from the box surface 61, thereby limiting the size of axial gap (a) created during the expansion process.
  • To augment the sealing capability of the threaded connection, a resilient seal 70 can be placed in a groove in the threaded portion of box member 20 between the metal-to-metal seal formed by the contact of walls 54 and 62 and the interengaged threads of the pin member 10 and box member 20 (as shown in FIGS. 5 and 6). Alternatively, the resilient seal 70 can be placed in a groove in the threaded portion of pin member 10.
  • FIG. 7 shows an alternative embodiment of the present invention showing an alternative design for pin nose 80. As shown in FIG. 7, pin nose 80 is configured with a rib 82 that is designed with a slanted top wall 85, a vertical (or substantially vertical) front wall 83, and an angled rear wall 84. Groove 90 in box member 20 is similarly shaped to mate with rib 82 when the threaded connection is made up. Groove 90 has an angled rear wall 92 at the leading edge of groove 90 (the wall furthest from box surface 91).
  • As shown in FIG. 7, when the threaded connection is fully made up, pin nose end 81 is in contact with, or very nearly in contact with, box surface 91 at the back of the box member 20 prior to expansion of the threaded connection. In this position, the slanted top wall 85 of rib 82 is in contact with the slanted wall of groove 90, and a small axial gap (a) exists between angled rear wall 84 of rib 82 and angled rear wall 92 of groove 90.
  • When an expansion cone is moved through the tubulars, the radial expansion of the tubulars causes pin nose 80 to shorten, thereby causing pin nose end 81 to “retract” away from box surface 91. As a result of pin nose end 81 retracting, an axial gap (a) is formed between pin nose end 81 and box surface 91 (as shown in FIG. 8).
  • As the pin nose 80 retracts, rib 82 moves backward (i.e., toward the left in FIG. 8) until the angled rear wall 84 of rib 82 contacts angled rear wall 92 of groove 90. The contact between angled rear wall 84 of rib 82 and angled rear wall 92 of groove 90 creates a metal-to-metal seal between pin member 10 and box member 20. The axial force acting on the point of contact between angled rear wall 84 and angled rear wall 92 generates a high bearing pressure that is equal to or greater than the internal pressure within the expandable tubulars.
  • The sealing ability of the expandable connection is enhanced by the “slanting” of angled rear walls 84 and 92. Specifically, by slanting the angled rear wall 84 and angled rear wall 92 as shown in FIGS. 7 and 8, a reverse trapping angle is incorporated into the sliding seal of the present invention. As shown, angled rear wall 84 and angled rear wall 92 have been machined with substantially equal trapping angles. The trapping angle is preferably in the range of 15-25 degrees. The above range of degrees for the reverse trapping angle of angled rear wall 84 and angled rear wall 92 is given by way of example only. One of skill in the art will recognize that the actual measurement of reverse trapping angle can vary greatly depending on numerous characteristics, including, but not limited to, the material of the expandable tubulars, the wall thickness of the pin and box members of the threaded connection, and the amount of radial expansion of the expandable tubulars.
  • The reverse trapping angle incorporated into the sliding seal of the present invention is designed to force pin nose 80 outwardly as angled rear wall 84 is forced into contact with angled rear wall 92. As pin nose 80 is forced in an outwardly direction, the bearing pressure between slanted top wall 85 of rib 82 and the corresponding slanted wall of groove 90 is increased. A larger trapping angle will cause higher bearing pressure between those surfaces. Both the increased bearing pressure between those surfaces and the increased bearing pressure caused by the forces acting on the surfaces at the trapping angles will produce a high strength metal-to-metal seal between pin member 10 and box member 20. The bearing pressure of the metal-to-metal seal so formed prevents fluids from migrating past the point of contact between angled rear wall 84 and angled rear wall 92. As such, the expansion process creates a high-pressure seal.
  • Additionally, the contact between angled rear wall 84 and angled rear wall 92 resists or impedes further retracting of the pin nose end 81 from the box surface 91, thereby limiting the size of axial gap (a) created during the expansion process. Further, such contact helps keep the threads of the pin member 10 engaged with the threads of the box member 20.
  • To augment the sealing capability of the threaded connection, a resilient seal 70 can be placed in a groove in the box member 20 between the metal-to-metal seal formed by the contact of angled rear wall 84 and angled rear wall 92 and the interengaged threads of the pin member 10 and box member 20 (as shown in FIGS. 7 and 8).
  • One of skill in the art will recognize that alternative embodiments of the present invention may utilize a pin nose and a box member of various shapes. Further, one of skill in the art will recognize that the dimensions of the expandable threaded connection and the geometry and size of the axial gap (a) can vary for given applications. Advanced finite element analysis can be used to aid in determining the optimal dimensions of the expandable threaded connection and the geometry and size of the axial gap that is necessary to be shaped before the expansion process.
  • One of skill in the art will also recognize that additional alternative embodiments exist in which the locations of the rib and the groove that form the sliding seal of the present invention can be reversed, i.e., the rib can be located on the box member and the groove can be located in the pin member. Additionally, one of skill in the art will appreciate that alternative embodiments exist in which the rib and groove can be placed on both the pin and box members, thereby allowing a coupling member to be used to connect two adjacent tubulars while still allowing for a sliding seal of the present invention to be formed upon expansion of the tubulars.
  • Further, one of skill in the art will appreciate that the sliding seal of the present invention can be formed when the tubulars are expanded by any known tubular expansion method, including rotary expansion techniques. For example, if the tubulars are expanded by moving an expansion cone through the tubulars, the sliding seal will be created as discussed above. If the tubulars are expanded by a rotary expansion tool, the pin tends to increase in length, thereby causing the pin nose to move into engagement with (or toward) the back of the box member during the expansion process. In such a situation, the pin and box members prior to expansion would look similar to FIG. 3. As the connection is expanded, the rib on the pin nose will move forward until a portion of the rib contacts a portion of the groove in the box member (similar to what is shown in FIG. 2).
  • Moreover, one of skill in the art will appreciate that the sliding seal of the present invention can be utilized on tubulars that are not connected by traditional threaded means. For example, the sliding seal of the present invention can be utilized on tubulars to be expanded that are made-up through other connection means such as the method of joining expandable tubulars disclosed in United States Published Patent Application 2004/0069498 A1 published on Apr. 15, 2004, which is incorporated herein by reference. When used on such tubulars, the rib and groove (or multiple rib and groove combinations) will be located on concentric sections of the tubulars such that the expansion process creates the seal as explained above.
  • While the apparatus, compositions and methods of this invention have been described in terms of preferred or illustrative embodiments, it will be apparent to those of skill in the art that variations may be applied to the process described herein without departing from the concept and scope of the invention. All such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the scope and concept of the invention as it is set out in the following claims.

Claims (22)

1. An expandable threaded tubular connection comprising:
a first tubular segment with a pin member, the pin member including interengageable thread means, a pin nose and a groove formed in the pin nose;
a second tubular segment with a box member, the box member including interengageable thread means suitable for threadedly engaging the pin member and a rib designed to rest within the groove in the pin nose when the threaded tubular connection is made up;
wherein the groove in the pin member is sized to allow the rib to move within the groove as a result of axial movement of the pin nose during radial expansion of the threaded tubular connection.
2. The expandable threaded tubular connection of claim 1 wherein the pin nose moves axially away from the back of the box member during radial expansion of the threaded tubular connection.
3. The expandable threaded tubular connection of claim 2 wherein the axial movement of the pin nose causes the rib to move within the groove in the pin member until a portion of the rib contacts a portion of the groove.
4. The expandable threaded tubular connection of claim 3 wherein the contact between the rib and the groove creates a seal between the pin member and the box member.
5. The expandable threaded tubular connection of claim 1 wherein the rib includes an angled wall forming an end of the rib.
6. The expandable threaded tubular connection of claim 5 wherein the groove in the pin member includes an angled wall designed to mate with the angled wall of the rib.
7. The expandable threaded tubular connection of claim 6 wherein the angled wall of the rib and the angled wall of the groove are in contact with each other upon the axial movement of the pin nose.
8. The expandable threaded tubular connection of claim 7 wherein the pin nose is forced outwardly when the angled wall of the rib and the angled wall of the groove are in contact with each other upon the axial movement of the pin nose.
9. The expandable threaded tubular connection of claim 7 wherein the contact between the angled wall of the rib and the angled wall of the groove creates a seal between the pin member and the box member.
10. The expandable threaded tubular connection of claim 1 further comprising a sealing element located at the back of the box member.
11. The expandable threaded tubular connection of claim 10 wherein the sealing element is made from an elastomeric material.
12. The expandable threaded tubular connection of claim 10 wherein the sealing element expands when contacted by a fluid.
13. The expandable threaded tubular connection of claim 1 further comprising a sealing element housed within a groove formed in the box member between individual threads of the interengageable thread means of the box member.
14. The expandable threaded tubular connection of claim 1 further comprising a sealing element housed within a groove formed in the pin member between individual threads of the interengageable thread means of the pin member.
15. The expandable threaded tubular connection of claim 1 wherein a leading edge of the groove in the pin nose is in contact with a back edge of the rib of the box member upon makeup of the threaded tubular connection such that the contact creates a metal-to-metal seal when the threaded tubular connection is madeup.
16. A method of sealing a threaded connection for expandable tubulars upon radial expansion of the threaded connection comprising:
providing a pin member on a first tubular segment, the pin member including interengageable thread means, a pin nose, and a groove in the pin nose;
providing a box member in a second tubular segment, the box member including interengageable thread means suitable for threadedly engaging the pin member and a rib designed to rest within the groove in the pin nose when the threaded tubular connection is made up;
inserting the pin member of the first tubular segment into the box member of the second tubular segment and threadably connecting the first tubular and the second tubular together;
radially expanding the threaded connection between the first tubular and the second tubular, whereby the pin nose moves axially away from the back of the box member during the radial expansion of the threaded connection;
causing the rib to move within the groove until a portion of the rib contacts a portion of the groove to form a seal between the pin member and the box member.
17. The method of claim 16 further comprising providing the rib with an angled wall at an end of the rib.
18. The method of claim 17 further comprising providing the groove with an angled wall for mating with the angled wall of the rib.
19. The method of claim 18 further comprising causing the angled wall of the rib and the angled wall of the groove to contact each other upon the axial movement of the pin nose.
20. The method of claim 19 whereby the contact between the angled wall of the rib and the angled wall of the groove creates a seal between the pin member and the box member.
21. The method of claim 16 further comprising providing a sealing element located at the back of the box member.
22. The method of claim 21 further comprising contacting the sealing element with a fluid, whereby the sealing element expands in response to contact with the fluid.
US12/855,422 2005-08-11 2010-08-12 Reverse sliding seal for expandable tubular connections Abandoned US20100320754A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/855,422 US20100320754A1 (en) 2005-08-11 2010-08-12 Reverse sliding seal for expandable tubular connections

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/201,499 US7798536B2 (en) 2005-08-11 2005-08-11 Reverse sliding seal for expandable tubular connections
US12/855,422 US20100320754A1 (en) 2005-08-11 2010-08-12 Reverse sliding seal for expandable tubular connections

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US11/201,499 Division US7798536B2 (en) 2005-08-11 2005-08-11 Reverse sliding seal for expandable tubular connections

Publications (1)

Publication Number Publication Date
US20100320754A1 true US20100320754A1 (en) 2010-12-23

Family

ID=37027315

Family Applications (2)

Application Number Title Priority Date Filing Date
US11/201,499 Expired - Fee Related US7798536B2 (en) 2005-08-11 2005-08-11 Reverse sliding seal for expandable tubular connections
US12/855,422 Abandoned US20100320754A1 (en) 2005-08-11 2010-08-12 Reverse sliding seal for expandable tubular connections

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US11/201,499 Expired - Fee Related US7798536B2 (en) 2005-08-11 2005-08-11 Reverse sliding seal for expandable tubular connections

Country Status (3)

Country Link
US (2) US7798536B2 (en)
CA (6) CA2881125C (en)
GB (3) GB2429220B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130292132A1 (en) * 2012-05-03 2013-11-07 Vetco Gray Inc. Method of forming a machinable surface
KR101536472B1 (en) * 2013-12-25 2015-07-14 주식회사 포스코 Connecting Device for Metal Pipe
CN104838085A (en) * 2012-09-07 2015-08-12 韦特柯格雷公司 Protected integral metal to metal seal

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060006648A1 (en) * 2003-03-06 2006-01-12 Grimmett Harold M Tubular goods with threaded integral joint connections
US20070228729A1 (en) * 2003-03-06 2007-10-04 Grimmett Harold M Tubular goods with threaded integral joint connections
US7798536B2 (en) * 2005-08-11 2010-09-21 Weatherford/Lamb, Inc. Reverse sliding seal for expandable tubular connections
US7549682B2 (en) * 2005-09-19 2009-06-23 Vetco Gray Inc. Threaded pipe connector
US20090302604A1 (en) * 2005-10-11 2009-12-10 Enventure Global Technology, L.L.C. Method and Apparatus for coupling Expandable Tubular Members
WO2007094687A1 (en) * 2006-02-17 2007-08-23 Norsk Hydro Asa Gas tight tubular joint or connection
FR2913746B1 (en) * 2007-03-14 2011-06-24 Vallourec Mannesmann Oil & Gas SEALED TUBULAR THREAD SEAL FOR INTERNAL AND EXTERNAL PRESSURE SOLUTIONS
US20100052319A1 (en) * 2008-08-28 2010-03-04 Mohawk Energy Ltd. Dual Seal Expandable Tubular Connection
FR2939490B1 (en) * 2008-12-10 2013-01-18 Vallourec Mannesmann Oil & Gas SEALED TUBULAR JOINT USED IN THE OIL INDUSTRY AND METHOD OF MAKING SAME
FR2940677B1 (en) * 2008-12-29 2016-07-22 Vallourec Mannesmann Oil & Gas France SEALED TUBULAR JOINT USED IN THE PETROLEUM INDUSTRY
CN101864906A (en) * 2010-07-09 2010-10-20 天津钢管集团股份有限公司 Bending-resistant oil casing threaded connection structure
CA2903714C (en) * 2013-03-15 2019-01-22 Weatherford/Lamb, Inc. Couplings for expandable tubular
CN103362457B (en) * 2013-08-03 2015-07-22 无锡西姆莱斯石油专用管制造有限公司 Cambered surface and plane sealed variable tooth wide wedge-type coupling structure and oil well pipe structure
US10428594B2 (en) 2013-11-22 2019-10-01 Vetco Gray, LLC Alignment guide feature for metal to metal seal protection on mechanical connections and couplings
US9453393B2 (en) 2014-01-22 2016-09-27 Seminole Services, LLC Apparatus and method for setting a liner
GB2524104B (en) * 2014-03-14 2020-12-02 Rubberatkins Ltd Coupling, downhole device, assembly and method
EP3126610B1 (en) 2014-04-04 2021-01-06 Enventure Global Technology, L.L.C. Expandable metal-to-metal seal connection
EP3159592B1 (en) * 2014-06-20 2019-10-09 Nippon Steel Corporation Threaded joint for steel pipes
CN106194045B (en) * 2016-09-21 2019-01-18 库尔勒施得石油技术服务有限公司 Drilling rod
CN110273655A (en) * 2019-07-26 2019-09-24 西南石油大学 A kind of novel direct-connected retaining ring pipe screw thread structure
CN110899445B (en) * 2019-12-17 2021-08-13 浙江普兴电子科技有限公司 Mold and method for preparing sine type deployable sealing structure by spinning process
US11448042B1 (en) * 2021-09-21 2022-09-20 Halliburton Energy Services, Inc. Expandable metal for junction locking and junction sealant applications

Citations (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1460769A (en) * 1921-07-07 1923-07-03 Nat Tube Co Pipe
US2005631A (en) * 1934-09-05 1935-06-18 O O Latimer Pipe coupling
US2065595A (en) * 1934-08-09 1936-12-29 Jones & Laughlin Steel Corp Tubular product and manufacture thereof
US2494128A (en) * 1945-11-14 1950-01-10 Nat Supply Co Method of increasing the axial tensile strength of threaded joints
US2980451A (en) * 1957-04-17 1961-04-18 Atlas Pipe Inc Threaded pipe joint having an extrudable generally non-resilient sealing means
US3047316A (en) * 1958-10-01 1962-07-31 Atlas Bradford Company Packed pin and box drill pipe coupling with means preventing extrusion of packing ring
US3067593A (en) * 1960-08-29 1962-12-11 American Iron & Machine Works Integral tool joint drill pipe
US3080179A (en) * 1959-10-06 1963-03-05 Huntsinger Associates Slip engaging portion of drill string formed of increased wall thickness and reduced hardness
US3475038A (en) * 1968-01-08 1969-10-28 Lee Matherne Pipe stabber with setscrews
US3489437A (en) * 1965-11-05 1970-01-13 Vallourec Joint connection for pipes
US3508771A (en) * 1964-09-04 1970-04-28 Vallourec Joints,particularly for interconnecting pipe sections employed in oil well operations
US3870351A (en) * 1972-03-31 1975-03-11 Sumitomo Metal Ind Threaded tube joint structure for casing, particularly oil well tubing
US3989284A (en) * 1975-04-23 1976-11-02 Hydril Company Tubular connection
US4253687A (en) * 1979-06-11 1981-03-03 Whiting Oilfield Rental, Inc. Pipe connection
US4317585A (en) * 1980-05-30 1982-03-02 Reynolds Metals Company Torqued drill pipe identification
USRE31123E (en) * 1977-01-03 1983-01-11 Centron Corporation Pipe section and coupling
US4601491A (en) * 1983-10-19 1986-07-22 Vetco Offshore, Inc. Pipe connector
US4611838A (en) * 1982-02-27 1986-09-16 Mannesmann Aktiengesellschaft Fluidtight pipe joint
US4619472A (en) * 1985-05-02 1986-10-28 Nippon Steel Corporation Pipe coupling
US4629225A (en) * 1985-08-09 1986-12-16 Inco Alloys International, Inc. Pipe joint for corrosion resistant alloys
US4629221A (en) * 1983-04-05 1986-12-16 Hunting Oilfield Services (Uk) Ltd. Pipe connectors
US4648627A (en) * 1984-01-18 1987-03-10 Dril-Quip, Inc. Stabbing connector
US4674773A (en) * 1984-01-23 1987-06-23 Teleco Oilfield Services Inc. Insulating coupling for drill collars and method of manufacture thereof
US4676528A (en) * 1984-04-30 1987-06-30 Gray Theodor R Method and apparatus for restoring tubular upsets
US4676529A (en) * 1986-03-24 1987-06-30 Hydril Company Pipe joint
US4688828A (en) * 1986-04-02 1987-08-25 Shaffer Donald U Tubing joint for corrosion protection
US4703959A (en) * 1986-02-10 1987-11-03 Hydril Company Threaded pipe connection with compressible seal ring
US4707001A (en) * 1986-06-20 1987-11-17 Seal-Tech, Inc. Liner connection
US4822081A (en) * 1987-03-23 1989-04-18 Xl Systems Driveable threaded tubular connection
US4846507A (en) * 1981-06-01 1989-07-11 George B. Geary Casing connector
US4893658A (en) * 1987-05-27 1990-01-16 Sumitomo Metal Industries, Ltd. FRP pipe with threaded ends
US4958862A (en) * 1988-10-03 1990-09-25 Dalmine Spa Hermetic metal pipe joint
US5348095A (en) * 1992-06-09 1994-09-20 Shell Oil Company Method of creating a wellbore in an underground formation
US5415441A (en) * 1994-02-28 1995-05-16 Halliburton Company Push-on coupling apparatus for tubular well completion structures
US5427418A (en) * 1986-07-18 1995-06-27 Watts; John D. High strength, low torque threaded tubular connection
US5681059A (en) * 1995-12-15 1997-10-28 Mackie; Michael J. Pipe connector
US5826921A (en) * 1991-11-25 1998-10-27 Woolley; Brown J. Threaded pipe joint
US5924745A (en) * 1995-05-24 1999-07-20 Petroline Wellsystems Limited Connector assembly for an expandable slotted pipe
US5954374A (en) * 1996-04-26 1999-09-21 Oil States Industries (Uk) Ltd. Pipe connectors
US5964486A (en) * 1997-03-24 1999-10-12 Oil States Industries (Uk) Limited Pipe connectors
US6042153A (en) * 1998-02-25 2000-03-28 Grant Prideco, Inc. Threaded connection for internally clad pipe
US6112818A (en) * 1995-11-09 2000-09-05 Petroline Wellsystems Limited Downhole setting tool for an expandable tubing
US6123368A (en) * 1998-03-19 2000-09-26 Hydril Company Two-step, differential diameter wedge threaded connector
US6322109B1 (en) * 1995-12-09 2001-11-27 Weatherford/Lamb, Inc. Expandable tubing connector for expandable tubing
US6322110B1 (en) * 1997-08-11 2001-11-27 Marubeni Tubulars, Inc. Tubular connection
US6328113B1 (en) * 1998-11-16 2001-12-11 Shell Oil Company Isolation of subterranean zones
US6409175B1 (en) * 1999-07-13 2002-06-25 Grant Prideco, Inc. Expandable joint connector
US6425444B1 (en) * 1998-12-22 2002-07-30 Weatherford/Lamb, Inc. Method and apparatus for downhole sealing
US6454013B1 (en) * 1997-11-01 2002-09-24 Weatherford/Lamb, Inc. Expandable downhole tubing
US6457532B1 (en) * 1998-12-22 2002-10-01 Weatherford/Lamb, Inc. Procedures and equipment for profiling and jointing of pipes
US20020163192A1 (en) * 2000-06-30 2002-11-07 Jean-Luc Coulon Tubular threaded joint capable of being subjected to diametral expansion
US6510896B2 (en) * 2001-05-04 2003-01-28 Weatherford/Lamb, Inc. Apparatus and methods for utilizing expandable sand screen in wellbores
US20030067166A1 (en) * 2001-10-09 2003-04-10 Sivley Robert S. Radially expandable tubular connection
US20030075924A1 (en) * 1996-05-15 2003-04-24 Olivier Huey P. Connection
US20030107213A1 (en) * 2001-12-06 2003-06-12 Baugh John L. Expandable locking thread joint
US6604763B1 (en) * 1998-12-07 2003-08-12 Shell Oil Company Expandable connector
US6626471B2 (en) * 2000-08-10 2003-09-30 Hydril Company Double flex seal for tubular connection
US20030234538A1 (en) * 2002-06-24 2003-12-25 Weatherford/Lamb, Inc. Multi-point high pressure seal for expandable tubular connections
US6681875B2 (en) * 2000-10-27 2004-01-27 Sandvik Ab Guide tube of a drill string configured to facilitate unscrewing thereof from a member of the drill string
US20040017081A1 (en) * 2002-07-06 2004-01-29 Simpson Neil Andrew Abercrombie Coupling tubulars
US6695012B1 (en) * 1999-10-12 2004-02-24 Shell Oil Company Lubricant coating for expandable tubular members
US20040069498A1 (en) * 2002-10-10 2004-04-15 Simpson Neil A. A. Method of jointing and running expandable tubulars
US6722443B1 (en) * 1998-08-08 2004-04-20 Weatherford/Lamb, Inc. Connector for expandable well screen
US20040104575A1 (en) * 2002-09-13 2004-06-03 Peter Ellington Expandable coupling
US6745845B2 (en) * 1998-11-16 2004-06-08 Shell Oil Company Isolation of subterranean zones
US6752436B1 (en) * 2000-03-31 2004-06-22 Vallourec Mannesmann Oil & Gas France Fatigue-resistant threaded bevelled tubular element
US6767035B2 (en) * 2002-03-11 2004-07-27 Weatherford/Lamb, Inc. High torque modified profile threaded tubular connection
US20040174017A1 (en) * 2003-03-06 2004-09-09 Lone Star Steel Company Tubular goods with expandable threaded connections
US20040262919A1 (en) * 2001-12-07 2004-12-30 Pierre Dutilleul Premium tubular threaded joint comprising at least a threaded element with end lip
US20050087983A1 (en) * 2002-06-28 2005-04-28 Vallourec Mannesmann Oil & Gas France Reinforced tubular joint for improved sealing-tightness after plastic expansion
US6905150B2 (en) * 2002-05-16 2005-06-14 Tenaris Connections Ag Threaded pipe joint
US20050212290A1 (en) * 2002-01-03 2005-09-29 Vallourec Mannesmann Oil & Gas France Threaded tubular joint comprising sealing surfaces
US20050236834A1 (en) * 2004-04-21 2005-10-27 Baker Hughes Incorporated Expandable tubular connection
US20070035127A1 (en) * 2005-08-12 2007-02-15 Benzie Scott A Protective sleeve for tubular connection
US20070035131A1 (en) * 2005-08-11 2007-02-15 Grinaldi Ltd Expandable tubular connection
US20070035132A1 (en) * 2005-08-11 2007-02-15 Grinaldi Ltd Expandable tubular connection
US20070102927A1 (en) * 2003-11-28 2007-05-10 Vallourec Mannesmann Oil & Gas France Production by plastic expansion of a sealed tubular joint with inclined abutting surface(s)
US20070187951A1 (en) * 2004-03-26 2007-08-16 Vallourec Mannesmann Oil & Gas France Threaded tubular connection which is resistant to bending stresses
US7699361B2 (en) * 2002-01-03 2010-04-20 Vallourec Mannesmann Oil & Gas France Sealed tubular joint with plastic expansion and at least one inclined surface
US7798536B2 (en) * 2005-08-11 2010-09-21 Weatherford/Lamb, Inc. Reverse sliding seal for expandable tubular connections

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127560B1 (en) 1983-04-29 1990-01-03 Baker Hughes Incorporated Threaded coupling comprising a ventable seal
WO1998042947A1 (en) 1997-03-21 1998-10-01 Petroline Wellsystems Limited Expandable slotted tubing string and method for connecting such a tubing string
CA2306656C (en) 1999-04-26 2006-06-06 Shell Internationale Research Maatschappij B.V. Expandable connector for borehole tubes
GB2368865B (en) 1999-07-09 2004-02-11 Enventure Global Technology Two-step radial expansion
JP4508509B2 (en) 1999-09-06 2010-07-21 イー2テック リミテッド Expandable well pipe
US6554287B1 (en) 1999-12-09 2003-04-29 Hydril Company Collapsing type seal for expandable tubular connections
FR2852076B1 (en) * 2003-03-07 2005-06-10 Vallourec Mannesmann Oil & Gas METHOD FOR MAKING A RADIALLY EXPANSION-SEALED TUBULAR THREAD SEAL
KR101209540B1 (en) * 2003-07-09 2012-12-07 가부시키가이샤 니콘 Exposure apparatus and method for manufacturing device
FR2863029B1 (en) 2003-11-28 2006-07-07 Vallourec Mannesmann Oil & Gas REALIZATION, BY PLASTIC EXPANSION, OF A SEALED TUBULAR JOINT WITH INITIAL LOCAL SENSITIZER (S) (S)
FR2863031B1 (en) 2003-11-28 2006-10-06 Vallourec Mannesmann Oil & Gas REALIZATION, BY PLASTIC EXPANSION, OF AN ASSEMBLY OF TWO TUBULAR JOINTS THREADED SEALED WITH A SUB-THICKENER OF LOCAL AND INITIAL MATERIAL

Patent Citations (89)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1460769A (en) * 1921-07-07 1923-07-03 Nat Tube Co Pipe
US2065595A (en) * 1934-08-09 1936-12-29 Jones & Laughlin Steel Corp Tubular product and manufacture thereof
US2005631A (en) * 1934-09-05 1935-06-18 O O Latimer Pipe coupling
US2494128A (en) * 1945-11-14 1950-01-10 Nat Supply Co Method of increasing the axial tensile strength of threaded joints
US2980451A (en) * 1957-04-17 1961-04-18 Atlas Pipe Inc Threaded pipe joint having an extrudable generally non-resilient sealing means
US3047316A (en) * 1958-10-01 1962-07-31 Atlas Bradford Company Packed pin and box drill pipe coupling with means preventing extrusion of packing ring
US3080179A (en) * 1959-10-06 1963-03-05 Huntsinger Associates Slip engaging portion of drill string formed of increased wall thickness and reduced hardness
US3067593A (en) * 1960-08-29 1962-12-11 American Iron & Machine Works Integral tool joint drill pipe
US3508771A (en) * 1964-09-04 1970-04-28 Vallourec Joints,particularly for interconnecting pipe sections employed in oil well operations
US3489437A (en) * 1965-11-05 1970-01-13 Vallourec Joint connection for pipes
US3475038A (en) * 1968-01-08 1969-10-28 Lee Matherne Pipe stabber with setscrews
US3870351A (en) * 1972-03-31 1975-03-11 Sumitomo Metal Ind Threaded tube joint structure for casing, particularly oil well tubing
US3989284A (en) * 1975-04-23 1976-11-02 Hydril Company Tubular connection
USRE31123E (en) * 1977-01-03 1983-01-11 Centron Corporation Pipe section and coupling
US4253687A (en) * 1979-06-11 1981-03-03 Whiting Oilfield Rental, Inc. Pipe connection
US4317585A (en) * 1980-05-30 1982-03-02 Reynolds Metals Company Torqued drill pipe identification
US4846507A (en) * 1981-06-01 1989-07-11 George B. Geary Casing connector
US4611838A (en) * 1982-02-27 1986-09-16 Mannesmann Aktiengesellschaft Fluidtight pipe joint
US4629221A (en) * 1983-04-05 1986-12-16 Hunting Oilfield Services (Uk) Ltd. Pipe connectors
US4601491A (en) * 1983-10-19 1986-07-22 Vetco Offshore, Inc. Pipe connector
US4648627A (en) * 1984-01-18 1987-03-10 Dril-Quip, Inc. Stabbing connector
US4674773A (en) * 1984-01-23 1987-06-23 Teleco Oilfield Services Inc. Insulating coupling for drill collars and method of manufacture thereof
US4676528A (en) * 1984-04-30 1987-06-30 Gray Theodor R Method and apparatus for restoring tubular upsets
US4619472A (en) * 1985-05-02 1986-10-28 Nippon Steel Corporation Pipe coupling
US4629225A (en) * 1985-08-09 1986-12-16 Inco Alloys International, Inc. Pipe joint for corrosion resistant alloys
US4703959A (en) * 1986-02-10 1987-11-03 Hydril Company Threaded pipe connection with compressible seal ring
US4676529A (en) * 1986-03-24 1987-06-30 Hydril Company Pipe joint
US4688828A (en) * 1986-04-02 1987-08-25 Shaffer Donald U Tubing joint for corrosion protection
US4707001A (en) * 1986-06-20 1987-11-17 Seal-Tech, Inc. Liner connection
US5427418A (en) * 1986-07-18 1995-06-27 Watts; John D. High strength, low torque threaded tubular connection
US4822081A (en) * 1987-03-23 1989-04-18 Xl Systems Driveable threaded tubular connection
US4893658A (en) * 1987-05-27 1990-01-16 Sumitomo Metal Industries, Ltd. FRP pipe with threaded ends
US4958862A (en) * 1988-10-03 1990-09-25 Dalmine Spa Hermetic metal pipe joint
US5826921A (en) * 1991-11-25 1998-10-27 Woolley; Brown J. Threaded pipe joint
US5348095A (en) * 1992-06-09 1994-09-20 Shell Oil Company Method of creating a wellbore in an underground formation
US5415441A (en) * 1994-02-28 1995-05-16 Halliburton Company Push-on coupling apparatus for tubular well completion structures
US5924745A (en) * 1995-05-24 1999-07-20 Petroline Wellsystems Limited Connector assembly for an expandable slotted pipe
US5984568A (en) * 1995-05-24 1999-11-16 Shell Oil Company Connector assembly for an expandable slotted pipe
US6112818A (en) * 1995-11-09 2000-09-05 Petroline Wellsystems Limited Downhole setting tool for an expandable tubing
US6322109B1 (en) * 1995-12-09 2001-11-27 Weatherford/Lamb, Inc. Expandable tubing connector for expandable tubing
US5681059A (en) * 1995-12-15 1997-10-28 Mackie; Michael J. Pipe connector
US5954374A (en) * 1996-04-26 1999-09-21 Oil States Industries (Uk) Ltd. Pipe connectors
US20030075924A1 (en) * 1996-05-15 2003-04-24 Olivier Huey P. Connection
US5964486A (en) * 1997-03-24 1999-10-12 Oil States Industries (Uk) Limited Pipe connectors
US6322110B1 (en) * 1997-08-11 2001-11-27 Marubeni Tubulars, Inc. Tubular connection
US6454013B1 (en) * 1997-11-01 2002-09-24 Weatherford/Lamb, Inc. Expandable downhole tubing
US6273474B1 (en) * 1998-02-25 2001-08-14 Grant Prideco, L.P. Threaded connection for internally clad pipe
US6042153A (en) * 1998-02-25 2000-03-28 Grant Prideco, Inc. Threaded connection for internally clad pipe
US6123368A (en) * 1998-03-19 2000-09-26 Hydril Company Two-step, differential diameter wedge threaded connector
US6722443B1 (en) * 1998-08-08 2004-04-20 Weatherford/Lamb, Inc. Connector for expandable well screen
US6745845B2 (en) * 1998-11-16 2004-06-08 Shell Oil Company Isolation of subterranean zones
US6328113B1 (en) * 1998-11-16 2001-12-11 Shell Oil Company Isolation of subterranean zones
US6604763B1 (en) * 1998-12-07 2003-08-12 Shell Oil Company Expandable connector
US6425444B1 (en) * 1998-12-22 2002-07-30 Weatherford/Lamb, Inc. Method and apparatus for downhole sealing
US6457532B1 (en) * 1998-12-22 2002-10-01 Weatherford/Lamb, Inc. Procedures and equipment for profiling and jointing of pipes
US6409175B1 (en) * 1999-07-13 2002-06-25 Grant Prideco, Inc. Expandable joint connector
US6695012B1 (en) * 1999-10-12 2004-02-24 Shell Oil Company Lubricant coating for expandable tubular members
US6752436B1 (en) * 2000-03-31 2004-06-22 Vallourec Mannesmann Oil & Gas France Fatigue-resistant threaded bevelled tubular element
US6712401B2 (en) * 2000-06-30 2004-03-30 Vallourec Mannesmann Oil & Gas France Tubular threaded joint capable of being subjected to diametral expansion
US20020163192A1 (en) * 2000-06-30 2002-11-07 Jean-Luc Coulon Tubular threaded joint capable of being subjected to diametral expansion
US6626471B2 (en) * 2000-08-10 2003-09-30 Hydril Company Double flex seal for tubular connection
US6681875B2 (en) * 2000-10-27 2004-01-27 Sandvik Ab Guide tube of a drill string configured to facilitate unscrewing thereof from a member of the drill string
US6510896B2 (en) * 2001-05-04 2003-01-28 Weatherford/Lamb, Inc. Apparatus and methods for utilizing expandable sand screen in wellbores
US6607220B2 (en) * 2001-10-09 2003-08-19 Hydril Company Radially expandable tubular connection
US20030067166A1 (en) * 2001-10-09 2003-04-10 Sivley Robert S. Radially expandable tubular connection
US6619696B2 (en) * 2001-12-06 2003-09-16 Baker Hughes Incorporated Expandable locking thread joint
US20030107213A1 (en) * 2001-12-06 2003-06-12 Baugh John L. Expandable locking thread joint
US20040262919A1 (en) * 2001-12-07 2004-12-30 Pierre Dutilleul Premium tubular threaded joint comprising at least a threaded element with end lip
US7699361B2 (en) * 2002-01-03 2010-04-20 Vallourec Mannesmann Oil & Gas France Sealed tubular joint with plastic expansion and at least one inclined surface
US20050212290A1 (en) * 2002-01-03 2005-09-29 Vallourec Mannesmann Oil & Gas France Threaded tubular joint comprising sealing surfaces
US6767035B2 (en) * 2002-03-11 2004-07-27 Weatherford/Lamb, Inc. High torque modified profile threaded tubular connection
US6905150B2 (en) * 2002-05-16 2005-06-14 Tenaris Connections Ag Threaded pipe joint
US20030234538A1 (en) * 2002-06-24 2003-12-25 Weatherford/Lamb, Inc. Multi-point high pressure seal for expandable tubular connections
US6971685B2 (en) * 2002-06-24 2005-12-06 Weatherford/Lamb, Inc. Multi-point high pressure seal for expandable tubular connections
US20050087983A1 (en) * 2002-06-28 2005-04-28 Vallourec Mannesmann Oil & Gas France Reinforced tubular joint for improved sealing-tightness after plastic expansion
US20080007060A1 (en) * 2002-07-06 2008-01-10 Simpson Neil Andrew Abercrombi Coupling tubulars
US20040017081A1 (en) * 2002-07-06 2004-01-29 Simpson Neil Andrew Abercrombie Coupling tubulars
US20040104575A1 (en) * 2002-09-13 2004-06-03 Peter Ellington Expandable coupling
US7107663B2 (en) * 2002-09-13 2006-09-19 Weatherford/Lamb, Inc. Expandable coupling
US6997264B2 (en) * 2002-10-10 2006-02-14 Weatherford/Lamb, Inc. Method of jointing and running expandable tubulars
US20040069498A1 (en) * 2002-10-10 2004-04-15 Simpson Neil A. A. Method of jointing and running expandable tubulars
US20040174017A1 (en) * 2003-03-06 2004-09-09 Lone Star Steel Company Tubular goods with expandable threaded connections
US20070102927A1 (en) * 2003-11-28 2007-05-10 Vallourec Mannesmann Oil & Gas France Production by plastic expansion of a sealed tubular joint with inclined abutting surface(s)
US20070187951A1 (en) * 2004-03-26 2007-08-16 Vallourec Mannesmann Oil & Gas France Threaded tubular connection which is resistant to bending stresses
US20050236834A1 (en) * 2004-04-21 2005-10-27 Baker Hughes Incorporated Expandable tubular connection
US20070035131A1 (en) * 2005-08-11 2007-02-15 Grinaldi Ltd Expandable tubular connection
US20070035132A1 (en) * 2005-08-11 2007-02-15 Grinaldi Ltd Expandable tubular connection
US7798536B2 (en) * 2005-08-11 2010-09-21 Weatherford/Lamb, Inc. Reverse sliding seal for expandable tubular connections
US20070035127A1 (en) * 2005-08-12 2007-02-15 Benzie Scott A Protective sleeve for tubular connection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130292132A1 (en) * 2012-05-03 2013-11-07 Vetco Gray Inc. Method of forming a machinable surface
US9057226B2 (en) * 2012-05-03 2015-06-16 Vetco Gray Inc. Method of forming a machinable surface
CN104838085A (en) * 2012-09-07 2015-08-12 韦特柯格雷公司 Protected integral metal to metal seal
KR101536472B1 (en) * 2013-12-25 2015-07-14 주식회사 포스코 Connecting Device for Metal Pipe

Also Published As

Publication number Publication date
GB0816235D0 (en) 2008-10-15
CA2555709A1 (en) 2007-02-11
GB0615602D0 (en) 2006-09-13
CA2881125A1 (en) 2007-02-11
CA2757151A1 (en) 2007-02-11
CA2881130C (en) 2016-08-30
CA2865078C (en) 2016-03-01
GB2449804A (en) 2008-12-03
GB2429220A (en) 2007-02-21
CA2881342A1 (en) 2007-02-11
CA2881130A1 (en) 2007-02-11
CA2881125C (en) 2015-11-24
CA2865078A1 (en) 2007-02-11
US20070035130A1 (en) 2007-02-15
GB2449805A (en) 2008-12-03
CA2757151C (en) 2015-06-30
GB2429220B (en) 2010-01-13
GB2449805B (en) 2009-05-06
CA2555709C (en) 2012-10-02
CA2881342C (en) 2016-08-02
US7798536B2 (en) 2010-09-21
GB0816234D0 (en) 2008-10-15
GB2449804B (en) 2009-05-06

Similar Documents

Publication Publication Date Title
US7798536B2 (en) Reverse sliding seal for expandable tubular connections
US6971685B2 (en) Multi-point high pressure seal for expandable tubular connections
US7452007B2 (en) Hybrid threaded connection for expandable tubulars
US6409175B1 (en) Expandable joint connector
US6896049B2 (en) Deformable member
US7887103B2 (en) Energizing seal for expandable connections
US20070035131A1 (en) Expandable tubular connection
US7077197B2 (en) Expandable tubular connection
US20100052319A1 (en) Dual Seal Expandable Tubular Connection
US6415863B1 (en) Apparatus and method for hanging tubulars in wells
US11371311B2 (en) Annular barrier with press connections

Legal Events

Date Code Title Description
AS Assignment

Owner name: WEATHERFORD/LAMB, INC., TEXAS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HASHEM, GHAZI J.;HARRALL, SIMON J.;RING, LEV M.;AND OTHERS;SIGNING DATES FROM 20050706 TO 20050804;REEL/FRAME:024830/0883

AS Assignment

Owner name: WEATHERFORD TECHNOLOGY HOLDINGS, LLC, TEXAS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WEATHERFORD/LAMB, INC.;REEL/FRAME:034526/0272

Effective date: 20140901

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION