US122514A - Improvement in rock-drills - Google Patents
Improvement in rock-drills Download PDFInfo
- Publication number
- US122514A US122514A US122514DA US122514A US 122514 A US122514 A US 122514A US 122514D A US122514D A US 122514DA US 122514 A US122514 A US 122514A
- Authority
- US
- United States
- Prior art keywords
- bit
- rock
- improvement
- drills
- diamond
- 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.)
- Expired - Lifetime
Links
- 239000010432 diamond Substances 0.000 description 18
- 229910003460 diamond Inorganic materials 0.000 description 12
- 239000011435 rock Substances 0.000 description 10
- 239000007787 solid Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000037250 Clearance Effects 0.000 description 2
- 230000035512 clearance Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S76/00—Metal tools and implements, making
- Y10S76/12—Diamond tools
Definitions
- MILAN C BULLOGK, 0F NEW YORK, N. Y.
- My invention relates to the revolving bit or boring head of a diamon l-drill, and is especially applicable to that class of diamond drillheads which are made solid, so as to excavate a circular hole; although it may also be applied to the annular drill.
- the solid bit now commonly in use, the cutting end, on which the diamonds are arranged, is made pointed or conical.
- the point or apex of the bit is thus not only the point of a wedge which enters the rock, but also the pivot upon which the drill revolves, and is, consequently, subjected to the heaviest crushing strain of any part of the bit, whiie at the same time it has hardly any motion from the revolution of the drill.
- the center dia- I mond which is practically a dead-center
- t A in the drawing, represents the bit or borlng head of a diamond-drill, upon Whose reentrant conical surface, shown in section in Fig. 2, are arranged the diamonds B B.
- the consequence of this construction is, that the Work of penetration is entirely performed by the outer or clearance diamonds, which, being set in the periphery of the bit, have the greatest amount of motion to do the work with, while the inside cone has only to cut away the core of' rock, the amount of work required of each diamond being proportional to its amount of motion, and the center diamond having only to crumble oft' the apex of the core, instead of forcing an entrance into the rock.
- C is a small central hole communicating with the hollow drill-rod for the purpose of supplying water to lubricate the bit and wash out the detritus.
- Other holes, D D may also be made in the bit for the same purpose.
- Figs. 4 and 5 show different modes of constructin g my improved bit in sections.
- the rings E E are slipped one inside of another, and by replacing one or more of them with rings of diiierent width or thickness, the inside angle ofthe bit may be made sharper or more obtuse, as may be desired, for diii'erent kinds of rock.
- This construction is also advantageous if a diamond should break, as in. such case the ring on which the broken diamond is may be at once replaced.
Description
' MILAN C. BULLOCK.
K Improvement in Rock Drills.
No.4 122,514.` Y Patentedlamwsz.
Rg. 1. y
PATENT OFFICE.
MILAN C. BULLOGK, 0F NEW YORK, N. Y.
IMPROVEMENT IN RQCK-DRILLS.
Specification forming part of Letters Patent No. 122,514, dated January 9, 1872.
invention, reference being had to the accompanying drawing which forms a part of thisl specification, and in which- Figure 1 is a side elevation of my improvement 5 Fig. 2, a vertical section; and Fig. 3, a bottom view thereof. Figs. 4 and 5 are vertical sections of different modifications.
The same parts are denoted bythe same letters in all the figures.
My invention relates to the revolving bit or boring head of a diamon l-drill, and is especially applicable to that class of diamond drillheads which are made solid, so as to excavate a circular hole; although it may also be applied to the annular drill.
111 the solid bit, now commonly in use, the cutting end, on which the diamonds are arranged, is made pointed or conical. The point or apex of the bit is thus not only the point of a wedge which enters the rock, but also the pivot upon which the drill revolves, and is, consequently, subjected to the heaviest crushing strain of any part of the bit, whiie at the same time it has hardly any motion from the revolution of the drill. Thus the center dia- I mond, which is practically a dead-center, and
has the least motion to do the work with, is made to do the hardest part of the Work. My invention is designed to remedy this defect; consists in making the end of the bit concave instead of convex.
t A, in the drawing, represents the bit or borlng head of a diamond-drill, upon Whose reentrant conical surface, shown in section in Fig. 2, are arranged the diamonds B B. The consequence of this construction is, that the Work of penetration is entirely performed by the outer or clearance diamonds, which, being set in the periphery of the bit, have the greatest amount of motion to do the work with, while the inside cone has only to cut away the core of' rock, the amount of work required of each diamond being proportional to its amount of motion, and the center diamond having only to crumble oft' the apex of the core, instead of forcing an entrance into the rock. C is a small central hole communicating with the hollow drill-rod for the purpose of supplying water to lubricate the bit and wash out the detritus. Other holes, D D, may also be made in the bit for the same purpose.
Figs. 4 and 5 show different modes of constructin g my improved bit in sections. The rings E E are slipped one inside of another, and by replacing one or more of them with rings of diiierent width or thickness, the inside angle ofthe bit may be made sharper or more obtuse, as may be desired, for diii'erent kinds of rock. This construction is also advantageous if a diamond should break, as in. such case the ring on which the broken diamond is may be at once replaced.
I have described this invention as applied only to a solid bit; but it is also useful when applied to an annular one, although not in the same degree.
What I claim as new, and desire to secure by Letters Patent of the United States, is-
The above-described concave diamond bit or boring-head.
M. C. BULLOCK.
Witnesses:
SAM. E. GRIsooM Tnos. A. BURTT. (124)
Publications (1)
Publication Number | Publication Date |
---|---|
US122514A true US122514A (en) | 1872-01-09 |
Family
ID=2191953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US122514D Expired - Lifetime US122514A (en) | Improvement in rock-drills |
Country Status (1)
Country | Link |
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US (1) | US122514A (en) |
Cited By (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2557302A (en) * | 1947-12-12 | 1951-06-19 | Aubrey F Maydew | Combination drag and rotary drilling bit |
US2812626A (en) * | 1954-06-12 | 1957-11-12 | Bisterfeld & Stolting | Grinding tools for working materials of great strength and hardness |
US2980098A (en) * | 1958-07-11 | 1961-04-18 | Ty Sa Man Machine Company | Grinding wheels |
US3127944A (en) * | 1959-09-04 | 1964-04-07 | Frank F Davis | Drilling saw |
US4574895A (en) * | 1982-02-22 | 1986-03-11 | Hughes Tool Company - Usa | Solid head bit with tungsten carbide central core |
WO1988006722A1 (en) * | 1987-02-24 | 1988-09-07 | Failure Analysis Associates | Surface sampling device |
US4856233A (en) * | 1987-02-24 | 1989-08-15 | Failure Analysis Associates, Inc. | Method for sampling a workpiece |
US20020189863A1 (en) * | 1999-12-22 | 2002-12-19 | Mike Wardley | Drilling bit for drilling while running casing |
US20030164251A1 (en) * | 2000-04-28 | 2003-09-04 | Tulloch Rory Mccrae | Expandable apparatus for drift and reaming borehole |
US20030173073A1 (en) * | 2000-04-17 | 2003-09-18 | Weatherford/Lamb, Inc. | Top drive casing system |
US20040003490A1 (en) * | 1997-09-02 | 2004-01-08 | David Shahin | Positioning and spinning device |
US20040069500A1 (en) * | 2001-05-17 | 2004-04-15 | Haugen David M. | Apparatus and methods for tubular makeup interlock |
US20040118613A1 (en) * | 1994-10-14 | 2004-06-24 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US20040124015A1 (en) * | 1994-10-14 | 2004-07-01 | Vail William Banning | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US20040140128A1 (en) * | 1994-10-14 | 2004-07-22 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US20040216925A1 (en) * | 1998-12-22 | 2004-11-04 | Weatherford/Lamb, Inc. | Method and apparatus for drilling and lining a wellbore |
US20040216924A1 (en) * | 2003-03-05 | 2004-11-04 | Bernd-Georg Pietras | Casing running and drilling system |
US20040216892A1 (en) * | 2003-03-05 | 2004-11-04 | Giroux Richard L | Drilling with casing latch |
US20040221997A1 (en) * | 1999-02-25 | 2004-11-11 | Weatherford/Lamb, Inc. | Methods and apparatus for wellbore construction and completion |
US20040244992A1 (en) * | 2003-03-05 | 2004-12-09 | Carter Thurman B. | Full bore lined wellbores |
US20050000696A1 (en) * | 2003-04-04 | 2005-01-06 | Mcdaniel Gary | Method and apparatus for handling wellbore tubulars |
US20050121232A1 (en) * | 1998-12-22 | 2005-06-09 | Weatherford/Lamb, Inc. | Downhole filter |
US20050133274A1 (en) * | 2002-12-30 | 2005-06-23 | Weatherford/Lamb, Inc. | Drilling with concentric strings of casing |
US20050194188A1 (en) * | 2003-10-03 | 2005-09-08 | Glaser Mark C. | Method of drilling and completing multiple wellbores inside a single caisson |
US20050205250A1 (en) * | 2002-10-11 | 2005-09-22 | Weatherford/Lamb, Inc. | Apparatus and methods for drilling with casing |
US20050257933A1 (en) * | 2004-05-20 | 2005-11-24 | Bernd-Georg Pietras | Casing running head |
US20050269105A1 (en) * | 1998-07-22 | 2005-12-08 | Weatherford/Lamb, Inc. | Apparatus for facilitating the connection of tubulars using a top drive |
US20060032638A1 (en) * | 2004-07-30 | 2006-02-16 | Giroux Richard L | Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly |
US20060124306A1 (en) * | 2000-01-19 | 2006-06-15 | Vail William B Iii | Installation of one-way valve after removal of retrievable drill bit to complete oil and gas wells |
US20060137911A1 (en) * | 1994-10-14 | 2006-06-29 | Weatherford/Lamb, Inc. | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7083005B2 (en) | 2002-12-13 | 2006-08-01 | Weatherford/Lamb, Inc. | Apparatus and method of drilling with casing |
US7090021B2 (en) | 1998-08-24 | 2006-08-15 | Bernd-Georg Pietras | Apparatus for connecting tublars using a top drive |
US7093675B2 (en) | 2000-08-01 | 2006-08-22 | Weatherford/Lamb, Inc. | Drilling method |
US7100710B2 (en) | 1994-10-14 | 2006-09-05 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US20060196695A1 (en) * | 2002-12-13 | 2006-09-07 | Giroux Richard L | Deep water drilling with casing |
US20060201711A1 (en) * | 1994-10-14 | 2006-09-14 | Vail William B Iii | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7128161B2 (en) | 1998-12-24 | 2006-10-31 | Weatherford/Lamb, Inc. | Apparatus and methods for facilitating the connection of tubulars using a top drive |
US7128154B2 (en) | 2003-01-30 | 2006-10-31 | Weatherford/Lamb, Inc. | Single-direction cementing plug |
US7140445B2 (en) | 1997-09-02 | 2006-11-28 | Weatherford/Lamb, Inc. | Method and apparatus for drilling with casing |
US7213656B2 (en) | 1998-12-24 | 2007-05-08 | Weatherford/Lamb, Inc. | Apparatus and method for facilitating the connection of tubulars using a top drive |
US7219744B2 (en) | 1998-08-24 | 2007-05-22 | Weatherford/Lamb, Inc. | Method and apparatus for connecting tubulars using a top drive |
US7234542B2 (en) | 1994-10-14 | 2007-06-26 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US20070261850A1 (en) * | 2006-05-12 | 2007-11-15 | Giroux Richard L | Stage cementing methods used in casing while drilling |
US7303022B2 (en) | 2002-10-11 | 2007-12-04 | Weatherford/Lamb, Inc. | Wired casing |
US7325610B2 (en) | 2000-04-17 | 2008-02-05 | Weatherford/Lamb, Inc. | Methods and apparatus for handling and drilling with tubulars or casing |
US20080035377A1 (en) * | 2006-08-08 | 2008-02-14 | Michael Sullivan | Milling of cemented tubulars |
US7334650B2 (en) | 2000-04-13 | 2008-02-26 | Weatherford/Lamb, Inc. | Apparatus and methods for drilling a wellbore using casing |
US7617866B2 (en) | 1998-08-24 | 2009-11-17 | Weatherford/Lamb, Inc. | Methods and apparatus for connecting tubulars using a top drive |
US7650944B1 (en) | 2003-07-11 | 2010-01-26 | Weatherford/Lamb, Inc. | Vessel for well intervention |
US7730965B2 (en) | 2002-12-13 | 2010-06-08 | Weatherford/Lamb, Inc. | Retractable joint and cementing shoe for use in completing a wellbore |
USRE42877E1 (en) | 2003-02-07 | 2011-11-01 | Weatherford/Lamb, Inc. | Methods and apparatus for wellbore construction and completion |
US8276689B2 (en) | 2006-05-22 | 2012-10-02 | Weatherford/Lamb, Inc. | Methods and apparatus for drilling with casing |
US8511405B2 (en) | 2010-04-30 | 2013-08-20 | Ryan Clint Frazier | Drill bit with tiered cutters |
-
0
- US US122514D patent/US122514A/en not_active Expired - Lifetime
Cited By (79)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2557302A (en) * | 1947-12-12 | 1951-06-19 | Aubrey F Maydew | Combination drag and rotary drilling bit |
US2812626A (en) * | 1954-06-12 | 1957-11-12 | Bisterfeld & Stolting | Grinding tools for working materials of great strength and hardness |
US2980098A (en) * | 1958-07-11 | 1961-04-18 | Ty Sa Man Machine Company | Grinding wheels |
US3127944A (en) * | 1959-09-04 | 1964-04-07 | Frank F Davis | Drilling saw |
US4574895A (en) * | 1982-02-22 | 1986-03-11 | Hughes Tool Company - Usa | Solid head bit with tungsten carbide central core |
US4845896A (en) * | 1987-02-24 | 1989-07-11 | Failure Analysis Associates | Surface sampling device |
WO1988006722A1 (en) * | 1987-02-24 | 1988-09-07 | Failure Analysis Associates | Surface sampling device |
US4856233A (en) * | 1987-02-24 | 1989-08-15 | Failure Analysis Associates, Inc. | Method for sampling a workpiece |
US20040124015A1 (en) * | 1994-10-14 | 2004-07-01 | Vail William Banning | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US20040140128A1 (en) * | 1994-10-14 | 2004-07-22 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US20060137911A1 (en) * | 1994-10-14 | 2006-06-29 | Weatherford/Lamb, Inc. | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7100710B2 (en) | 1994-10-14 | 2006-09-05 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7165634B2 (en) | 1994-10-14 | 2007-01-23 | Weatherford/Lamb, Inc. | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US20040118613A1 (en) * | 1994-10-14 | 2004-06-24 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US20060201711A1 (en) * | 1994-10-14 | 2006-09-14 | Vail William B Iii | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7228901B2 (en) | 1994-10-14 | 2007-06-12 | Weatherford/Lamb, Inc. | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7147068B2 (en) | 1994-10-14 | 2006-12-12 | Weatherford / Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7108084B2 (en) | 1994-10-14 | 2006-09-19 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7234542B2 (en) | 1994-10-14 | 2007-06-26 | Weatherford/Lamb, Inc. | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
US7140445B2 (en) | 1997-09-02 | 2006-11-28 | Weatherford/Lamb, Inc. | Method and apparatus for drilling with casing |
US20040003490A1 (en) * | 1997-09-02 | 2004-01-08 | David Shahin | Positioning and spinning device |
US7509722B2 (en) | 1997-09-02 | 2009-03-31 | Weatherford/Lamb, Inc. | Positioning and spinning device |
US7137454B2 (en) | 1998-07-22 | 2006-11-21 | Weatherford/Lamb, Inc. | Apparatus for facilitating the connection of tubulars using a top drive |
US20050269105A1 (en) * | 1998-07-22 | 2005-12-08 | Weatherford/Lamb, Inc. | Apparatus for facilitating the connection of tubulars using a top drive |
US7617866B2 (en) | 1998-08-24 | 2009-11-17 | Weatherford/Lamb, Inc. | Methods and apparatus for connecting tubulars using a top drive |
US7219744B2 (en) | 1998-08-24 | 2007-05-22 | Weatherford/Lamb, Inc. | Method and apparatus for connecting tubulars using a top drive |
US7090021B2 (en) | 1998-08-24 | 2006-08-15 | Bernd-Georg Pietras | Apparatus for connecting tublars using a top drive |
US20040216925A1 (en) * | 1998-12-22 | 2004-11-04 | Weatherford/Lamb, Inc. | Method and apparatus for drilling and lining a wellbore |
US7117957B2 (en) | 1998-12-22 | 2006-10-10 | Weatherford/Lamb, Inc. | Methods for drilling and lining a wellbore |
US20050121232A1 (en) * | 1998-12-22 | 2005-06-09 | Weatherford/Lamb, Inc. | Downhole filter |
US7188687B2 (en) | 1998-12-22 | 2007-03-13 | Weatherford/Lamb, Inc. | Downhole filter |
US7128161B2 (en) | 1998-12-24 | 2006-10-31 | Weatherford/Lamb, Inc. | Apparatus and methods for facilitating the connection of tubulars using a top drive |
US7213656B2 (en) | 1998-12-24 | 2007-05-08 | Weatherford/Lamb, Inc. | Apparatus and method for facilitating the connection of tubulars using a top drive |
US7311148B2 (en) | 1999-02-25 | 2007-12-25 | Weatherford/Lamb, Inc. | Methods and apparatus for wellbore construction and completion |
US20040221997A1 (en) * | 1999-02-25 | 2004-11-11 | Weatherford/Lamb, Inc. | Methods and apparatus for wellbore construction and completion |
US20020189863A1 (en) * | 1999-12-22 | 2002-12-19 | Mike Wardley | Drilling bit for drilling while running casing |
US7216727B2 (en) | 1999-12-22 | 2007-05-15 | Weatherford/Lamb, Inc. | Drilling bit for drilling while running casing |
US20060124306A1 (en) * | 2000-01-19 | 2006-06-15 | Vail William B Iii | Installation of one-way valve after removal of retrievable drill bit to complete oil and gas wells |
US7334650B2 (en) | 2000-04-13 | 2008-02-26 | Weatherford/Lamb, Inc. | Apparatus and methods for drilling a wellbore using casing |
US20030173073A1 (en) * | 2000-04-17 | 2003-09-18 | Weatherford/Lamb, Inc. | Top drive casing system |
US7712523B2 (en) | 2000-04-17 | 2010-05-11 | Weatherford/Lamb, Inc. | Top drive casing system |
US7325610B2 (en) | 2000-04-17 | 2008-02-05 | Weatherford/Lamb, Inc. | Methods and apparatus for handling and drilling with tubulars or casing |
US20030164251A1 (en) * | 2000-04-28 | 2003-09-04 | Tulloch Rory Mccrae | Expandable apparatus for drift and reaming borehole |
US7093675B2 (en) | 2000-08-01 | 2006-08-22 | Weatherford/Lamb, Inc. | Drilling method |
US7073598B2 (en) | 2001-05-17 | 2006-07-11 | Weatherford/Lamb, Inc. | Apparatus and methods for tubular makeup interlock |
US20040069500A1 (en) * | 2001-05-17 | 2004-04-15 | Haugen David M. | Apparatus and methods for tubular makeup interlock |
US20050205250A1 (en) * | 2002-10-11 | 2005-09-22 | Weatherford/Lamb, Inc. | Apparatus and methods for drilling with casing |
US7303022B2 (en) | 2002-10-11 | 2007-12-04 | Weatherford/Lamb, Inc. | Wired casing |
US7090023B2 (en) | 2002-10-11 | 2006-08-15 | Weatherford/Lamb, Inc. | Apparatus and methods for drilling with casing |
US20060196695A1 (en) * | 2002-12-13 | 2006-09-07 | Giroux Richard L | Deep water drilling with casing |
US7083005B2 (en) | 2002-12-13 | 2006-08-01 | Weatherford/Lamb, Inc. | Apparatus and method of drilling with casing |
US7938201B2 (en) | 2002-12-13 | 2011-05-10 | Weatherford/Lamb, Inc. | Deep water drilling with casing |
US7730965B2 (en) | 2002-12-13 | 2010-06-08 | Weatherford/Lamb, Inc. | Retractable joint and cementing shoe for use in completing a wellbore |
US20100139978A9 (en) * | 2002-12-13 | 2010-06-10 | Giroux Richard L | Deep water drilling with casing |
US20050133274A1 (en) * | 2002-12-30 | 2005-06-23 | Weatherford/Lamb, Inc. | Drilling with concentric strings of casing |
US7131505B2 (en) * | 2002-12-30 | 2006-11-07 | Weatherford/Lamb, Inc. | Drilling with concentric strings of casing |
US7128154B2 (en) | 2003-01-30 | 2006-10-31 | Weatherford/Lamb, Inc. | Single-direction cementing plug |
USRE42877E1 (en) | 2003-02-07 | 2011-11-01 | Weatherford/Lamb, Inc. | Methods and apparatus for wellbore construction and completion |
US20040216892A1 (en) * | 2003-03-05 | 2004-11-04 | Giroux Richard L | Drilling with casing latch |
US7191840B2 (en) | 2003-03-05 | 2007-03-20 | Weatherford/Lamb, Inc. | Casing running and drilling system |
US20040216924A1 (en) * | 2003-03-05 | 2004-11-04 | Bernd-Georg Pietras | Casing running and drilling system |
US20040244992A1 (en) * | 2003-03-05 | 2004-12-09 | Carter Thurman B. | Full bore lined wellbores |
US7360594B2 (en) | 2003-03-05 | 2008-04-22 | Weatherford/Lamb, Inc. | Drilling with casing latch |
US7413020B2 (en) | 2003-03-05 | 2008-08-19 | Weatherford/Lamb, Inc. | Full bore lined wellbores |
US20050000696A1 (en) * | 2003-04-04 | 2005-01-06 | Mcdaniel Gary | Method and apparatus for handling wellbore tubulars |
US7370707B2 (en) | 2003-04-04 | 2008-05-13 | Weatherford/Lamb, Inc. | Method and apparatus for handling wellbore tubulars |
US7650944B1 (en) | 2003-07-11 | 2010-01-26 | Weatherford/Lamb, Inc. | Vessel for well intervention |
US20050194188A1 (en) * | 2003-10-03 | 2005-09-08 | Glaser Mark C. | Method of drilling and completing multiple wellbores inside a single caisson |
US7264067B2 (en) | 2003-10-03 | 2007-09-04 | Weatherford/Lamb, Inc. | Method of drilling and completing multiple wellbores inside a single caisson |
US20050257933A1 (en) * | 2004-05-20 | 2005-11-24 | Bernd-Georg Pietras | Casing running head |
US7284617B2 (en) | 2004-05-20 | 2007-10-23 | Weatherford/Lamb, Inc. | Casing running head |
US7503397B2 (en) | 2004-07-30 | 2009-03-17 | Weatherford/Lamb, Inc. | Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly |
US20060032638A1 (en) * | 2004-07-30 | 2006-02-16 | Giroux Richard L | Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly |
US20070261850A1 (en) * | 2006-05-12 | 2007-11-15 | Giroux Richard L | Stage cementing methods used in casing while drilling |
US7857052B2 (en) | 2006-05-12 | 2010-12-28 | Weatherford/Lamb, Inc. | Stage cementing methods used in casing while drilling |
US8276689B2 (en) | 2006-05-22 | 2012-10-02 | Weatherford/Lamb, Inc. | Methods and apparatus for drilling with casing |
US7823665B2 (en) | 2006-08-08 | 2010-11-02 | Weatherford/Lamb, Inc. | Milling of cemented tubulars |
US20080035377A1 (en) * | 2006-08-08 | 2008-02-14 | Michael Sullivan | Milling of cemented tubulars |
US8511405B2 (en) | 2010-04-30 | 2013-08-20 | Ryan Clint Frazier | Drill bit with tiered cutters |
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