EP0532397A1 - Continuous mixing device, process and use in a pumping plant for high viscosity fluid - Google Patents

Continuous mixing device, process and use in a pumping plant for high viscosity fluid Download PDF

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Publication number
EP0532397A1
EP0532397A1 EP92402438A EP92402438A EP0532397A1 EP 0532397 A1 EP0532397 A1 EP 0532397A1 EP 92402438 A EP92402438 A EP 92402438A EP 92402438 A EP92402438 A EP 92402438A EP 0532397 A1 EP0532397 A1 EP 0532397A1
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EP
European Patent Office
Prior art keywords
blades
pump
inlet
fluid
rotation
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EP92402438A
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German (de)
French (fr)
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EP0532397B1 (en
Inventor
Henri Cholet
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/50—Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/55—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers driven by the moving material
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids

Definitions

  • the invention relates to a continuous mixing device intended for mixing in particular high viscosity crude oil with at least one other less viscous fluid in order to obtain a mixture of viscosity much lower than said crude oil, the mixture being more efficiently displaced by pumping by conventional systems.
  • Patent application FR-2656035 discloses a device for pumping a liquid of high viscosity, but the entire volume of the working fluid is mixed with crude oil. In addition, this installation does not describe a dynamic and continuous mixing device placed upstream of the pump.
  • the invention advantageously improves the prior techniques in particular by the use of a mixing device separate from the pump and allowing an appropriate adjustment of the physical characteristics of the mixture supplied to the inlet of the pump.
  • the object of the present invention therefore relates to a continuous mixing device comprising a body in which fluids circulate between an inlet and to an outlet of said body and at least two fluids of different viscosities entering through said inlet.
  • the device comprises a rotary shaft comprising at least two blades and it is adapted to supply at the outlet of said body a mixture of said two fluids, said mixture having a viscosity lower than that of the most viscous inlet fluid.
  • the profile of the blades can be such that without circulation, the rotation of the blades provides a reaction force substantially parallel to the axis of rotation and directed in the same direction as the flow when the latter is established.
  • the profile of the blades can be such that, without circulation, the rotation of the blades does not provide a reaction force of significant magnitude parallel to the axis of rotation.
  • the device can comprise at least a set of three stages of blades, each stage being able to consist of at least two blades having the same cylindrical volume of revolution.
  • the stages can be offset by 120 ° relative to the axis of said shaft and the cylindrical volumes generated by the revolution of each stage can be substantially adjacent.
  • the device can comprise four assemblies and said stage can comprise two blades arranged at 180 °.
  • the shaft can be linked in rotation with the shaft of a hydraulic pump and the outlet of said body can lead to the suction of said pump.
  • the pump can be driven in rotation by a hydraulic motor, itself being able to be driven in rotation by the injection of a pressurized fluid.
  • Part of the pressurized fluid injected into said motor can be led to the inlet of said body.
  • the body of the device can advantageously include deflectors whose internal edge is substantially tangent to the volume of revolution of the blades.
  • the invention also relates to a method of pumping a high viscosity fluid in which said fluid is supplied as well as at least one other fluid of lower viscosity to the inlet of a mixing device according to the invention, the mixture at the outlet of said body being led to the suction of a pump.
  • a part of the working fluid can be brought to the inlet of said body, said working fluid being injected under pressure to rotate the hydraulic motor for rotating the pump and the device.
  • the invention also relates to the use of the mixing device according to the invention in an installation for pumping crude oil with high viscosity in a well comprising a casing.
  • the installation comprises a raw material inlet duct at the inlet of said device, a duct connecting the outlet of said device to the suction of a pump, a hydraulic motor for rotating the pump and said device, a duct for injection of the working fluid connecting an injection installation to the surface and the engine, a pump outlet pipe bringing the mixture to the surface and an engine outlet pipe bringing some of the engine fluid to the surface, the other part being brought to the entry of said device by another conduit.
  • a single duct can go up said part of the working fluid and said mixture and on the surface this duct can communicate with an installation for separating in particular crude oil and the working fluid.
  • Figure 1 shows a partial sectional view of the mixing device.
  • Figure 2 shows a perspective of the rotating shaft of the mixer to better describe the respective arrangement of the blades.
  • FIG. 3 represents a graph giving the viscosity of the oil and of the mixture obtained as a function of the temperature.
  • FIG. 4 represents the diagram of a crude oil pumping installation comprising the mixer.
  • Figure 5 shows a variant of the previous pumping installation.
  • Figure 6 shows another variant of the pumping installation.
  • the mixer 1 is incorporated into a casing 12 secured to the body of the pump not shown in this figure.
  • the conduit 8 puts the crude oil reserve in communication with the inlet 2 of the body 17 of the mixer 1.
  • An orifice 9 puts the channel 10 in communication with the inlet 2 of the mixer.
  • the channel 10 is in particular located in the wall of the casing 12.
  • the outlet 3 of the body 17 of the mixer 1 communicates with the inlet 13 of the centrifugal pump, the first wheel of which is referenced 14.
  • a cylindrical shaft 4 is guided at its two ends by the bearing 6 and a connection means 5 with the shaft of the centrifugal pump.
  • the shaft 4 comprises pairs of blades 7 and 7a, symmetrical with respect to the axis of the shaft 4 and located in the same section.
  • the shaft is equipped with twelve pairs of blades arranged along the length of the shaft so that the upper edge of a blade is substantially in the same section as the lower edge of the blade adjacent.
  • each volume of revolution generated by the rotation of a pair of blades is substantially adjacent to the next.
  • the blades are inclined at an acute angle i relative to the axis of the shaft oriented in the direction of the flow, that is to say in the direction of arrow 15, the direction of rotation of the 'shaft being indicated by arrow 16.
  • This mode of orientation of the blades relative to the direction of rotation of the shaft and the direction of circulation of the fluids in the mixer provides a reactive force on the shaft in the same direction as the circulation.
  • This force is the axial component of the result of the reactive forces on each blade.
  • the rotation of these propellers that constitute all of the blades tends to push the flow in the opposite direction to its circulation.
  • the mixer can be compared to a repelling propeller. This arrangement promotes the action of stirring the fluids in the mixer to obtain a homogeneous mixture.
  • the section of the blades is not inclined as above.
  • the blades may in particular be flat and their width disposed parallel to the axis of the shaft, that is to say that the angle i is zero.
  • the blades can also be of substantially cylindrical shape. More generally, it can be said that in this embodiment the mixer will neither be repellent against flow, nor attractive. The mode of action is then close to a shearing action on the circulating fluid vein.
  • the blades of the continuous mixer cannot have an action providing an acceleration of the flow, such as an attractive propeller, or a centrifugal pump wheel.
  • the mixer of our invention is totally different from a compression element, whether this is a pump element, a booster element or a priming element.
  • the mixer of our invention provides a pressure drop, generally minimal but still noticeable.
  • the pairs of blades are distributed over the periphery of the shaft with an angular offset of 120 °. So the fourth blade has the same angular position as the first then defining a set of three pairs of blades.
  • the embodiment shown therefore comprises four of these sets.
  • the number or the arrangement of the blades are different. Indeed, depending on the nature of the fluids and their flow in the mixer, it may be necessary to increase or decrease the number of blades, and even to have more than two blades in the same cross section. In this case, they will be distributed regularly around the periphery of the tree.
  • the value of the angle i can be variable but less than or equal to 90 °, taking into account the references indicated above.
  • Figure 2 shows in partial perspective the arrangement thus obtained in the preferred embodiment.
  • the body 17 of the mixer comprises deflectors 11 arranged along generatrices of the cylindrical interior volume of the body.
  • This embodiment comprises four deflectors distributed at 90 °. These deflectors can be produced in multiple and diverse ways, their main role being to straighten the fluid stream by promoting the turbulence created by the blades while allowing the fluid to circulate between the inlet and the outlet.
  • Curve A relates to anhydrous heavy crude oil.
  • Curve B gives the viscosity of an emulsion consisting of 60% of the heavy petroleum of curve A and 40% of water, the assembly having passed through the mixing device of the invention with a flow rate of 2500 l / hour and for a mixer rotation speed of 3000 rpm.
  • Curve C represents the viscosity of a mixture obtained in a container from the same proportion of crude oil and water.
  • FIG. 4 represents a pumping installation lowered into a well 20, generally cased by a casing 21.
  • the well is in communication with a viscous oil deposit. This oil flows into the well.
  • the installation pump is immersed in petroleum 22 to a suitable depth depending in particular on the characteristics of the deposit, the configuration of the completion and the static and dynamic level of the effluent.
  • the upper part 27 is made up of concentric tubulars, assembled to the surface where are located in particular an installation 28 for injecting the working fluid, an outlet from a collecting pipe 29 for a portion of the working fluid, a line 30 for collecting the compressed mixture, an outlet from a degassing line 31 and a departure from the line 35 for injecting the working fluid.
  • Line 35 connects the injection installation 28 to the inlet 33 of the hydraulic motor.
  • Line 31 is an annular line defined by the well and the outside of the tubulars and casings of the pumping installation. This pipe directly connects the crude oil reserve to the surface and allows the gas to be collected on the surface while letting the oil degas naturally. The more the fluid 22 is degassed, the better the efficiency of the pumping installation.
  • Line 30 connects the outlet of pump 34 to the surface.
  • Line 29 connects outlet 32 of the hydraulic motor.
  • a conduit 37 connects the outlet 32 of the motor to the inlet 38 of the mixer 24.
  • the supply conduit 23 comprises two concentric tubes 40 and 41 forming baffles in order to promote the degassing of the crude. This enters the conduit through the perforations 39, passes through the annular of the tubes 40 and 41 and then back up into the tube 41 to arrive at the inlet 38 of the mixer.
  • the motor 26 can be of the turbine or volumetric type, for example according to the Moineau principle.
  • the circulation of the working fluid in the engine can be done from bottom to top or vice versa.
  • the pump can be of the single or multi-stage centrifugal type or of the volumetric type for example according to the Moineau principle.
  • the dimensions of the concentric triple completion lowered into the casing 21 in casing 9 5 / 8 ⁇ can be: casing or tubing 7 ⁇ for the pipe 30, tubing 4 1 / 2 ⁇ or 5 ⁇ for the pipe 29 and tubing 2 ⁇ or 2 7 / 8 ⁇ for the pipe 35.
  • the installation is simplified from the point of view of the number of pipes compared to the preferred embodiment of Figure 4 where three concentric pipes 30, 29, 35 are used in the well 20 , that is, a triple completion.
  • a packer type sealing element 45 between the oil supply pipe and the walls of the well. This packer isolates the reservoir area and allows the use of the annular pipe 46 above said packer for the ascent of the mixture from the outlet 34 of the pump to the surface.
  • the completion then comprises two tubes 29 and 35 for respectively raising a portion of the working fluid and injecting the motor fluid.
  • FIG. 6 A second variant of the pumping installation is shown in FIG. 6. This involves bringing together the pumped mixture and the part of the working fluid.
  • the outputs 32 and 34 respectively of the motor and of the pump communicate in a single line 47.
  • This line is connected at the surface to an installation 48 adapted to the separation of crude oil, working fluid and other fluids from the mixture if those - these are not the working fluid.
  • a pipe 49 collects the working fluid to recycle it in the injection installation 28.
  • the lines 29, 30 and 35 may not be concentric, in fact the prior art knows the multiple non-concentric completions, that is to say using parallel tubes in the well 20.
  • this lower viscosity fluid admitted to the inlet of the mixer through the orifice 9 is different from the working fluid used for the motorization of the pumping installation.
  • this lower viscosity fluid may include several constituents adapted to promote mixing. In this case we can use another separate supply line and connected to the surface.
  • the fluid (s) mixed with the high viscosity fluid may be of mineral or organic origin.
  • the mixture obtained by the mixer according to the invention will be an emulsion and / or a dilution.
  • the proportions of the constituents of the mixture can be variable depending on the characteristics of the deposit and the nature of the fluids in place.
  • means for regulating the flow rate of fluid injected at the inlet of the mixer are in particular located between the outlet of the engine and the pipe 10 or 37.
  • the well has an inclined portion and even may be close to the horizontal.
  • the pumping installation is then generally lowered into a part of the well which is strongly inclined.

Abstract

The invention relates to a continuous mixing device (1) comprising a rotary shaft (4) equipped with blades (7, 7a). The mixture obtained at the outlet of the mixer results from the entry into the mixer of a fluid of high viscosity (22) and of at least one fluid of lower viscosity. The mixing device is suitable for providing a mixture of lower viscosity in relation to the most viscous fluid introduced at the entry (2, 38) of the mixer. The invention provides a process for pumping a viscous fluid and the use of the mixing device in a plant for pumping an oil crude of high viscosity. <IMAGE>

Description

L'invention concerne un dispositif mélangeur continu destiné à mélanger en particulier du pétrole brut de haute viscosité avec au moins un autre fluide moins visqueux afin d'obtenir un mélange de viscosité beaucoup plus faible que ledit pétrole brut, le mélange étant plus efficacement déplacé par pompage par les systèmes conventionnels.The invention relates to a continuous mixing device intended for mixing in particular high viscosity crude oil with at least one other less viscous fluid in order to obtain a mixture of viscosity much lower than said crude oil, the mixture being more efficiently displaced by pumping by conventional systems.

Les développements actuels de la production pétrolière conduisent à l'exploitation de gisements d'huile visqueuse, notamment à partir de puits comportant des parties horizontales ou fortement inclinées par rapport à la verticale traversant le gisement.Current developments in petroleum production have led to the exploitation of viscous oil deposits, in particular from wells having horizontal or strongly inclined parts with respect to the vertical passing through the deposit.

Dans les cas où le pompage par tige est techniquement impossible ou économiquement non rentable, il faut alors envisager l'usage de pompes rotatives soit centrifuges soit volumétriques. Mais ces pompes peuvent ne pas fonctionner convenablement avec des fluides de forte viscosité.In cases where pumping by rod is technically impossible or economically uneconomic, the use of rotary pumps, either centrifugal or positive displacement, should then be considered. However, these pumps may not work properly with high viscosity fluids.

On connaît par le document US-A-4721436 un procédé et une installation pour pomper un pétrole visqueux. Ce document enseigne l'utilisation d'une pompe centrifuge entraînée en rotation par une turbine hydraulique fonctionnant par l'injection à partir de la surface d'un fluide moteur, lequel est en partie injecté au niveau de l'aspiration de la pompe pour faire baisser la viscosité du pétrole dans la pompe. Cette installation ne possède pas de dispositif mélangeur en amont de la pompe. Dans ce système le mélange se fait d'une manière interne à la pompe.Document US-A-4721436 discloses a method and an installation for pumping viscous oil. This document teaches the use of a centrifugal pump driven in rotation by a hydraulic turbine operating by injection from the surface of a working fluid, which is partly injected at the suction of the pump to make lower the viscosity of the oil in the pump. This installation does not have a mixing device upstream of the pump. In this system mixing takes place internally at the pump.

On connaît par la demande de brevet FR-2656035 un dispositif de pompage d'un liquide de forte viscosité, mais la totalité du volume du fluide moteur est mélangé au pétrole brut. De plus, cette installation ne décrit pas de dispositif mélangeur dynamique et continu placé en amont de la pompe.Patent application FR-2656035 discloses a device for pumping a liquid of high viscosity, but the entire volume of the working fluid is mixed with crude oil. In addition, this installation does not describe a dynamic and continuous mixing device placed upstream of the pump.

L'invention améliore avantageusement les techniques antérieures notamment par l'utilisation d'un dispositif mélangeur séparé de la pompe et permettant un réglage approprié des caractéristiques physiques du mélange amené à l'entrée de la pompe.The invention advantageously improves the prior techniques in particular by the use of a mixing device separate from the pump and allowing an appropriate adjustment of the physical characteristics of the mixture supplied to the inlet of the pump.

L'objet de la présente invention concerne donc un dispositif mélangeur continu comportant un corps dans lequel circule des fluides entre une entrée et vers une sortie dudit corps et au moins deux fluides de viscosités différentes pénétrant par ladite entrée. Le dispositif comporte un arbre rotatif comportant au moins deux pales et il est adapté à fournir en sortie dudit corps un mélange desdits deux fluides, ledit mélange ayant une viscosité inférieure à celle du fluide d'entrée le plus visqueux.The object of the present invention therefore relates to a continuous mixing device comprising a body in which fluids circulate between an inlet and to an outlet of said body and at least two fluids of different viscosities entering through said inlet. The device comprises a rotary shaft comprising at least two blades and it is adapted to supply at the outlet of said body a mixture of said two fluids, said mixture having a viscosity lower than that of the most viscous inlet fluid.

Le profil des pales peut être tel, que sans circulation, la mise en rotation des pales procure une force de réaction sensiblement parallèle à l'axe de rotation et dirigée dans le même sens que l'écoulement quand celui-ci est établi.The profile of the blades can be such that without circulation, the rotation of the blades provides a reaction force substantially parallel to the axis of rotation and directed in the same direction as the flow when the latter is established.

Dans une autre variante, le profil des pales peut être tel que, sans circulation, la mise en rotation des pales ne procure pas de force de réaction de grandeur notable parallèlement à l'axe de rotation.In another variant, the profile of the blades can be such that, without circulation, the rotation of the blades does not provide a reaction force of significant magnitude parallel to the axis of rotation.

Le dispositif peut comporter au moins un ensemble de trois étages de pales, chaque étage pouvant être constitué par au moins deux pales ayant le même volume cylindrique de révolution. Les étages peuvent être décalés de 120° par rapport à l'axe dudit arbre et les volumes cylindriques engendrés par la révolution de chaque étage peuvent être sensiblement adjacents.The device can comprise at least a set of three stages of blades, each stage being able to consist of at least two blades having the same cylindrical volume of revolution. The stages can be offset by 120 ° relative to the axis of said shaft and the cylindrical volumes generated by the revolution of each stage can be substantially adjacent.

Le dispositif peut comporter quatre ensembles et ledit étage peut comporter deux pales disposées à 180°.The device can comprise four assemblies and said stage can comprise two blades arranged at 180 °.

L'arbre peut être lié en rotation avec l'arbre d'une pompe hydraulique et la sortie dudit corps peut déboucher dans l'aspiration de ladite pompe.The shaft can be linked in rotation with the shaft of a hydraulic pump and the outlet of said body can lead to the suction of said pump.

La pompe peut être entraînée en rotation par un moteur hydraulique, lui même pouvant être entraîné en rotation par l'injection d'un fluide sous pression.The pump can be driven in rotation by a hydraulic motor, itself being able to be driven in rotation by the injection of a pressurized fluid.

Une partie du fluide sous pression injecté dans ledit moteur peut être conduit à l'entrée dudit corps.Part of the pressurized fluid injected into said motor can be led to the inlet of said body.

Le corps du dispositif peut avantageusement comporter des déflecteurs dont la bordure interne est sensiblement tangente au volume de révolution des pales.The body of the device can advantageously include deflectors whose internal edge is substantially tangent to the volume of revolution of the blades.

L'invention concerne également un procédé de pompage d'un fluide de haute viscosité dans lequel on amène ledit fluide ainsi qu'au moins un autre fluide de plus basse viscosité à l'entrée d'un dispositif mélangeur selon l'invention, le mélange en sortie dudit corps étant conduit à l'aspiration d'une pompe.The invention also relates to a method of pumping a high viscosity fluid in which said fluid is supplied as well as at least one other fluid of lower viscosity to the inlet of a mixing device according to the invention, the mixture at the outlet of said body being led to the suction of a pump.

Dans le procédé, on peut amener une partie du fluide moteur à l'entrée dudit corps, ledit fluide moteur étant injecté sous pression pour mettre en rotation le moteur hydraulique d'entraînement en rotation de la pompe et du dispositif.In the method, a part of the working fluid can be brought to the inlet of said body, said working fluid being injected under pressure to rotate the hydraulic motor for rotating the pump and the device.

L'invention concerne également l'utilisation du dispositif mélangeur selon l'invention dans une installation de pompage d'un pétrole brut à haute viscosité dans un puits comportant un cuvelage. L'installation comporte un conduit d'arrivée du brut à l'entrée dudit dispositif, un conduit reliant la sortie dudit dispositif à l'aspiration d'une pompe, un moteur hydraulique pour mouvoir en rotation la pompe et ledit dispositif, un conduit d'injection du fluide moteur reliant une installation d'injection à la surface et le moteur, un conduit de sortie de la pompe remontant le mélange à la surface et un conduit de sortie du moteur remontant une partie du fluide moteur en surface, l'autre partie étant amenée à l'entrée dudit dispositif par un autre conduit.The invention also relates to the use of the mixing device according to the invention in an installation for pumping crude oil with high viscosity in a well comprising a casing. The installation comprises a raw material inlet duct at the inlet of said device, a duct connecting the outlet of said device to the suction of a pump, a hydraulic motor for rotating the pump and said device, a duct for injection of the working fluid connecting an injection installation to the surface and the engine, a pump outlet pipe bringing the mixture to the surface and an engine outlet pipe bringing some of the engine fluid to the surface, the other part being brought to the entry of said device by another conduit.

Dans une première variante de l'utilisation, on peut placer un moyen d'étanchéité entre ledit conduit d'amenée du brut et les parois du puits délimitant un conduit annulaire communiquant jusqu'en surface et le mélange pompé peut remonter en surface par ledit conduit annulaire.In a first variant of the use, it is possible to place a sealing means between said crude supply conduit and the walls of the well defining an annular conduit communicating up to the surface and the pumped mixture can rise to the surface by said conduit annular.

Dans une seconde variante, un seul conduit peut remonter ladite partie du fluide moteur et ledit mélange et en surface ce conduit peut communiquer avec une installation de séparation notamment du pétrole brut et du fluide moteur.In a second variant, a single duct can go up said part of the working fluid and said mixture and on the surface this duct can communicate with an installation for separating in particular crude oil and the working fluid.

Afin de mieux faire comprendre l'invention, on va décrire, à titre d'exemple nullement limitatif, en se référant aux figures jointes en annexes, un mode de réalisation d'un dispositif mélangeur suivant l'invention, dans le cas d'exploitation d'un gisement de pétrole à haute viscosité.In order to better understand the invention, an embodiment of a following mixing device will be described, by way of non-limiting example, with reference to the attached figures. the invention, in the case of exploitation of a high viscosity oil deposit.

La figure 1 représente une vue en coupe partielle du dispositif mélangeur.Figure 1 shows a partial sectional view of the mixing device.

La figure 2 représente une perspective de l'arbre rotatif du mélangeur permettant de mieux décrire la disposition respective des pales.Figure 2 shows a perspective of the rotating shaft of the mixer to better describe the respective arrangement of the blades.

La figure 3 représente un graphique donnant la viscosité du pétrole et du mélange obtenu en fonction de la température.FIG. 3 represents a graph giving the viscosity of the oil and of the mixture obtained as a function of the temperature.

La figure 4 représente le schéma d'une installation de pompage de pétrole brut comportant le mélangeur.FIG. 4 represents the diagram of a crude oil pumping installation comprising the mixer.

La figure 5 représente une variante de la précédente installation de pompage.Figure 5 shows a variant of the previous pumping installation.

La figure 6 représente une autre variante de l'installation de pompage.Figure 6 shows another variant of the pumping installation.

Sur la figure 1, le mélangeur 1 est incorporé à un carter 12 solidaire du corps de la pompe non représentée sur cette figure. Le conduit 8 met en communication la réserve de pétrole brut avec l'entrée 2 du corps 17 du mélangeur 1. Un orifice 9 met en communication le canal 10 avec l'entrée 2 du mélangeur. Le canal 10 est notamment situé dans la paroi du carter 12.In FIG. 1, the mixer 1 is incorporated into a casing 12 secured to the body of the pump not shown in this figure. The conduit 8 puts the crude oil reserve in communication with the inlet 2 of the body 17 of the mixer 1. An orifice 9 puts the channel 10 in communication with the inlet 2 of the mixer. The channel 10 is in particular located in the wall of the casing 12.

La sortie 3 du corps 17 du mélangeur 1 communique avec l'entrée 13 de la pompe centrifuge dont la première roue est référencée 14.The outlet 3 of the body 17 of the mixer 1 communicates with the inlet 13 of the centrifugal pump, the first wheel of which is referenced 14.

Un arbre cylindrique 4 est guidé à ses deux extrémités par le palier 6 et un moyen de connexion 5 avec l'arbre de la pompe centrifuge.A cylindrical shaft 4 is guided at its two ends by the bearing 6 and a connection means 5 with the shaft of the centrifugal pump.

L'arbre 4 comporte des paires de pales 7 et 7a, symétriques par rapport à l'axe de l'arbre 4 et situées dans la même section. Dans cette réalisation, l'arbre est équipé de douze paires de pales disposées sur la longueur de l'arbre de façon à ce que le bord supérieur d'une pale soit sensiblement dans la même section que le bord inférieur de la pale adjacente. Ainsi, chaque volume de révolution engendré par la rotation d'une paire de pales est sensiblement adjacent avec le suivant.The shaft 4 comprises pairs of blades 7 and 7a, symmetrical with respect to the axis of the shaft 4 and located in the same section. In this embodiment, the shaft is equipped with twelve pairs of blades arranged along the length of the shaft so that the upper edge of a blade is substantially in the same section as the lower edge of the blade adjacent. Thus, each volume of revolution generated by the rotation of a pair of blades is substantially adjacent to the next.

Les pales sont inclinées d'un angle i aigu par rapport à l'axe de l'arbre orienté suivant la direction de l'écoulement, c'est-à-dire dans le sens de la flèche 15, le sens de rotation de l'arbre étant indiqué par la flèche 16. Ce mode d'orientation des pales relativement au sens de rotation de l'arbre et au sens de circulation des fluides dans le mélangeur, procure un effort réactif sur l'arbre dans la même direction que la circulation. Cet effort est la composante axiale de la résultante des efforts réactifs sur chaque pale. En effet, la mise en rotation de ces hélices que constitue l'ensemble des pales, a tendance à repousser le flux dans le sens contraire à sa circulation. Dans cette disposition de profil, on peut comparer le mélangeur à une hélice répulsive. Cette disposition favorise l'action de brassage des fluides dans le mélangeur pour obtenir un mélange homogène.The blades are inclined at an acute angle i relative to the axis of the shaft oriented in the direction of the flow, that is to say in the direction of arrow 15, the direction of rotation of the 'shaft being indicated by arrow 16. This mode of orientation of the blades relative to the direction of rotation of the shaft and the direction of circulation of the fluids in the mixer, provides a reactive force on the shaft in the same direction as the circulation. This force is the axial component of the result of the reactive forces on each blade. Indeed, the rotation of these propellers that constitute all of the blades, tends to push the flow in the opposite direction to its circulation. In this profile arrangement, the mixer can be compared to a repelling propeller. This arrangement promotes the action of stirring the fluids in the mixer to obtain a homogeneous mixture.

On ne sortira pas du cadre de cette invention si la section des pales n'est pas inclinée telle que ci-dessus. Dans certain cas d'utilisation simplifiée, les pales peuvent être notamment plates et leur largeur disposée parallèlement à l'axe de l'arbre, c'est-à-dire que l'angle i est nul. Les pales peuvent être également de forme sensiblement cylindrique. D'une manière plus générale, on pourra dire que dans cette réalisation le mélangeur ne sera ni répulsif vis-à-vis de l'écoulement, ni attractif. Le mode d'action est alors proche d'une action de cisaillement de la veine fluide en circulation.It will not depart from the scope of this invention if the section of the blades is not inclined as above. In certain cases of simplified use, the blades may in particular be flat and their width disposed parallel to the axis of the shaft, that is to say that the angle i is zero. The blades can also be of substantially cylindrical shape. More generally, it can be said that in this embodiment the mixer will neither be repellent against flow, nor attractive. The mode of action is then close to a shearing action on the circulating fluid vein.

Dans aucune des formes de réalisations, les pales du mélangeur continu ne peuvent avoir une action procurant une accélération de l'écoulement, comme une hélice attractive, ou une roue de pompe centrifuge. Autrement dit, le mélangeur de notre invention est totalement différent d'un élément de compression, que celui-ci soit un élément de pompe, un élément de gavage ou un élément d'amorçage. Au contraire, le mélangeur de notre invention procure une chute de pression, généralement minime mais quand même sensible.In none of the embodiments, the blades of the continuous mixer cannot have an action providing an acceleration of the flow, such as an attractive propeller, or a centrifugal pump wheel. In other words, the mixer of our invention is totally different from a compression element, whether this is a pump element, a booster element or a priming element. On the contrary, the mixer of our invention provides a pressure drop, generally minimal but still noticeable.

Les paires de pales sont réparties sur la périphérie de l'arbre avec un décalage angulaire de 120°. Ainsi, la quatrième pale a la même position angulaire que la première définissant alors un ensemble de trois paires de pales. La réalisation représentée comporte donc quatre de ces ensembles.The pairs of blades are distributed over the periphery of the shaft with an angular offset of 120 °. So the fourth blade has the same angular position as the first then defining a set of three pairs of blades. The embodiment shown therefore comprises four of these sets.

On ne sortira pas du cadre de cette invention si le nombre ou la disposition des pales sont différents. En effet, en fonction de la nature des fluides et de leur débit dans le mélangeur, on peut être amené à augmenter ou diminuer le nombre de pales, et même à disposer plus de deux pales dans la même section transversale. Dans ce cas, elles seront réparties régulièrement à la périphérie de l'arbre. De plus, la valeur de l'angle i peut être variable mais inférieur ou égal à 90°, compte tenu des repères indiqués plus haut.It will not depart from the scope of this invention if the number or the arrangement of the blades are different. Indeed, depending on the nature of the fluids and their flow in the mixer, it may be necessary to increase or decrease the number of blades, and even to have more than two blades in the same cross section. In this case, they will be distributed regularly around the periphery of the tree. In addition, the value of the angle i can be variable but less than or equal to 90 °, taking into account the references indicated above.

La figure 2 montre en perspective partielle la disposition ainsi obtenu dans la réalisation préférentielle.Figure 2 shows in partial perspective the arrangement thus obtained in the preferred embodiment.

Le corps 17 du mélangeur comporte des déflecteurs 11 disposés suivant des génératrices du volume intérieur cylindrique du corps. Cette réalisation comporte quatre déflecteurs répartis à 90°. Ces déflecteurs peuvent être réalisés de manières multiples et diverses, leur rôle principal étant de redresser la veine fluide en favorisant les turbulences crées par les pales tout en laissant circuler le fluide entre l'entrée et la sortie.The body 17 of the mixer comprises deflectors 11 arranged along generatrices of the cylindrical interior volume of the body. This embodiment comprises four deflectors distributed at 90 °. These deflectors can be produced in multiple and diverse ways, their main role being to straighten the fluid stream by promoting the turbulence created by the blades while allowing the fluid to circulate between the inlet and the outlet.

Sur la figure 3, on a tracé trois courbes A, B et C donnant la variation de viscosité en centipoise en fonction de la température en degré Celsius.In FIG. 3, three curves A, B and C have been plotted giving the variation in viscosity in centipoise as a function of the temperature in degrees Celsius.

La courbe A concerne un pétrole brut lourd anhydre.Curve A relates to anhydrous heavy crude oil.

La courbe B donne la viscosité d'une émulsion constitué par 60% du pétrole lourd de la courbe A et de 40% d'eau, l'ensemble ayant traversé le dispositif mélangeur de l'invention avec un débit de 2500 l/heure et pour une vitesse de rotation du mélangeur de 3000 tr/min.Curve B gives the viscosity of an emulsion consisting of 60% of the heavy petroleum of curve A and 40% of water, the assembly having passed through the mixing device of the invention with a flow rate of 2500 l / hour and for a mixer rotation speed of 3000 rpm.

La courbe C représente la viscosité d'un mélange obtenu dans un récipient à partir de la même proportion de pétrole brut et d'eau.Curve C represents the viscosity of a mixture obtained in a container from the same proportion of crude oil and water.

On remarque l'efficacité du mélangeur dynamique par rapport à un mélangeur statique (courbe C).We notice the efficiency of the dynamic mixer compared to a static mixer (curve C).

La figure 4 représente une installation de pompage descendue dans un puits 20, en général cuvelé par un casing 21. Le puits est en communication avec un gisement de pétrole visqueux. Ce pétrole s'écoule dans le puits. La pompe de l'installation est plongée dans le pétrole 22 à une profondeur adaptée en fonction notamment des caractéristiques du gisement, de la configuration de la complétion et du niveau statique et dynamique de l'effluent.FIG. 4 represents a pumping installation lowered into a well 20, generally cased by a casing 21. The well is in communication with a viscous oil deposit. This oil flows into the well. The installation pump is immersed in petroleum 22 to a suitable depth depending in particular on the characteristics of the deposit, the configuration of the completion and the static and dynamic level of the effluent.

La partie inférieure de l'installation se décompose ainsi :

  • 23 indique le conduit d'alimentation en pétrole brut,
  • 24 indique le mélangeur continu,
  • 25 indique la pompe,
  • 26 indique le moteur hydraulique d'entraînement de la pompe et du mélangeur.
The lower part of the installation breaks down as follows:
  • 23 indicates the crude oil supply duct,
  • 24 indicates the continuous mixer,
  • 25 indicates the pump,
  • 26 indicates the hydraulic motor for pump and mixer drive.

La partie supérieure 27 se compose de tubulaires concentriques, assemblés jusqu'en surface où sont situés notamment une installation d'injection 28 du fluide moteur, une sortie d'une conduite de collecte 29 d'une partie du fluide moteur, une sortie d'une conduite de collecte 30 du mélange comprimé, une sortie d'une conduite de dégazage 31 et un départ de la conduite d'injection 35 du fluide moteur.The upper part 27 is made up of concentric tubulars, assembled to the surface where are located in particular an installation 28 for injecting the working fluid, an outlet from a collecting pipe 29 for a portion of the working fluid, a line 30 for collecting the compressed mixture, an outlet from a degassing line 31 and a departure from the line 35 for injecting the working fluid.

La conduite 35 relie l'installation d'injection 28 à l'entrée 33 du moteur hydraulique.Line 35 connects the injection installation 28 to the inlet 33 of the hydraulic motor.

La conduite 31 est une conduite annulaire définie par le puits et l'extérieur des tubulaires et des carters de l'installation de pompage. Cette conduite relie directement la réserve de pétrole brut à la surface et permet de collecter en surface le gaz tout en laissant le pétrole se dégazer naturellement. Plus le fluide 22 sera dégazé, meilleur sera le rendement de l'installation de pompage.Line 31 is an annular line defined by the well and the outside of the tubulars and casings of the pumping installation. This pipe directly connects the crude oil reserve to the surface and allows the gas to be collected on the surface while letting the oil degas naturally. The more the fluid 22 is degassed, the better the efficiency of the pumping installation.

La conduite 30 relie la sortie de la pompe 34 à la surface.Line 30 connects the outlet of pump 34 to the surface.

La conduite 29 relie la sortie 32 du moteur hydraulique.Line 29 connects outlet 32 of the hydraulic motor.

Un conduit 37 relie la sortie 32 du moteur à l'entrée 38 du mélangeur 24.A conduit 37 connects the outlet 32 of the motor to the inlet 38 of the mixer 24.

Le conduit d'alimentation 23 comporte deux tubes concentriques 40 et 41 formant chicanes afin de favoriser le dégazage du brut. Celui-ci pénètre dans le conduit par les perforations 39, passe dans l'annulaire des tubes 40 et 41 puis remonte dans le tube 41 pour arriver à l'entrée 38 du mélangeur.The supply conduit 23 comprises two concentric tubes 40 and 41 forming baffles in order to promote the degassing of the crude. This enters the conduit through the perforations 39, passes through the annular of the tubes 40 and 41 and then back up into the tube 41 to arrive at the inlet 38 of the mixer.

Les arbres rotatifs 42, 43 et 44 respectivement du mélangeur, de la pompe et du moteur, sont liés en rotation, c'est-à-dire que la rotation de l'arbre du moteur entraîne la rotation de l'arbre de la pompe et de l'arbre du mélangeur. On ne sortira pas du cadre de cette invention si ces trois axes ne sont pas confondus et si leurs vitesses ne sont pas identiques.The rotary shafts 42, 43 and 44 respectively of the mixer, of the pump and of the motor, are linked in rotation, that is to say that the rotation of the motor shaft causes the rotation of the pump shaft and the mixer shaft. We will not depart from the scope of this invention if these three axes are not confused and if their speeds are not identical.

Le moteur 26 peut être du type turbine ou volumétrique, par exemple suivant le principe Moineau. La circulation du fluide moteur dans le moteur peut se faire de bas en haut ou l'inverse.The motor 26 can be of the turbine or volumetric type, for example according to the Moineau principle. The circulation of the working fluid in the engine can be done from bottom to top or vice versa.

La pompe peut être du type centrifuge mono ou multi-étagée ou du type volumétrique par exemple suivant le principe Moineau.The pump can be of the single or multi-stage centrifugal type or of the volumetric type for example according to the Moineau principle.

En illustration, les dimensions de la triple complétion concentrique descendue dans le cuvelage 21 en casing 9 5/8˝, peuvent être : casing ou tubing 7˝ pour la conduite 30, tubing 4 1/2˝ ou 5˝ pour la conduite 29 et tubing 2˝ ou 2 7/8˝ pour la conduite 35.In illustration, the dimensions of the concentric triple completion lowered into the casing 21 in casing 9 5 / 8˝, can be: casing or tubing 7˝ for the pipe 30, tubing 4 1 / 2˝ or 5˝ for the pipe 29 and tubing 2˝ or 2 7 / 8˝ for the pipe 35.

Dans une première variante représentée sur la figure 5, l'installation est simplifiée du point de vue du nombre de conduites par rapport à la réalisation préférentielle de la figure 4 où l'on utilise trois conduites concentriques 30, 29, 35 dans le puits 20, c'est-à-dire une complétion triple. En effet, dans les cas où le pétrole brut ne dégaze pas, on peut installer sur le corps inférieur de l'ensemble de pompage, un élément d'étanchéité type packer 45 entre la conduite d'alimentation en pétrole et les parois du puits. Ce packer isole la zone de réservoir et permet l'utilisation de la conduite annulaire 46 supérieure audit packer pour la remontée du mélange de la sortie 34 de la pompe jusqu'en surface. La complétion comporte alors deux tubes 29 et 35 pour respectivement la remontée d'une partie du fluide moteur et l'injection du fluide moteur.In a first variant shown in Figure 5, the installation is simplified from the point of view of the number of pipes compared to the preferred embodiment of Figure 4 where three concentric pipes 30, 29, 35 are used in the well 20 , that is, a triple completion. Indeed, in cases where the crude oil does not degas, it is possible to install on the lower body of the pumping assembly, a packer type sealing element 45 between the oil supply pipe and the walls of the well. This packer isolates the reservoir area and allows the use of the annular pipe 46 above said packer for the ascent of the mixture from the outlet 34 of the pump to the surface. The completion then comprises two tubes 29 and 35 for respectively raising a portion of the working fluid and injecting the motor fluid.

Une seconde variante de l'installation de pompage est représentée sur la figure 6. Il s'agit ici de faire remonter ensemble le mélange pompé et la partie du fluide moteur. Les sorties 32 et 34 respectivement du moteur et de la pompe communiquent dans une seule et même conduite 47. Cette conduite est reliée en surface à une installation 48 adaptée à la séparation du pétrole brut, du fluide moteur et des autres fluides du mélange si ceux-ci ne sont pas le fluide moteur. En sortie de l'installation de séparation, une conduite 49 récupère le fluide moteur pour le recycler dans l'installation 28 d'injection.A second variant of the pumping installation is shown in FIG. 6. This involves bringing together the pumped mixture and the part of the working fluid. The outputs 32 and 34 respectively of the motor and of the pump communicate in a single line 47. This line is connected at the surface to an installation 48 adapted to the separation of crude oil, working fluid and other fluids from the mixture if those - these are not the working fluid. At the outlet of the separation installation, a pipe 49 collects the working fluid to recycle it in the injection installation 28.

Les conduites 29, 30 et 35 peuvent ne pas être concentriques, en effet l'art antérieur connaît les complétions multiples non concentriques, c'est-à-dire à l'aide de tubes parallèles dans le puits 20.The lines 29, 30 and 35 may not be concentric, in fact the prior art knows the multiple non-concentric completions, that is to say using parallel tubes in the well 20.

On ne sortira pas du cadre de cette invention si le fluide de viscosité plus faible admis à l'entrée du mélangeur par l'orifice 9 est différent du fluide moteur utilisé pour la motorisation de l'installation de pompage. De plus ce fluide de viscosité plus faible peut comporter plusieurs constituants adaptés à favoriser le mélange. Dans ce cas on pourra utiliser une autre ligne d'alimentation séparée et reliée à la surface.It will not depart from the scope of this invention if the lower viscosity fluid admitted to the inlet of the mixer through the orifice 9 is different from the working fluid used for the motorization of the pumping installation. In addition, this lower viscosity fluid may include several constituents adapted to promote mixing. In this case we can use another separate supply line and connected to the surface.

Le ou les fluide(s) mélangé(s) au fluide de haute viscosité peuvent être d'origine minérale ou organique. Le mélange obtenu par le mélangeur selon l'invention sera une émulsion et/ou une dilution.The fluid (s) mixed with the high viscosity fluid may be of mineral or organic origin. The mixture obtained by the mixer according to the invention will be an emulsion and / or a dilution.

Les proportions des constituants du mélange peuvent être variables en fonction des caractéristiques du gisement et de la nature des fluides en place. Dans le cas de l'installation de la figure 4 et de ses variantes figures 5 et 6, des moyens de régulation du débit de fluide injecté à l'entrée du mélangeur sont notamment situés entre la sortie du moteur et la conduite 10 ou 37.The proportions of the constituents of the mixture can be variable depending on the characteristics of the deposit and the nature of the fluids in place. In the case of the installation in FIG. 4 and its variants in FIGS. 5 and 6, means for regulating the flow rate of fluid injected at the inlet of the mixer are in particular located between the outlet of the engine and the pipe 10 or 37.

On ne sortira pas du cadre de l'invention si le puits comporte une portion incliné et même pouvant être proche de l'horizontale. L'installation de pompage est alors en général descendue dans une partie du puits fortement inclinée.It will not depart from the scope of the invention if the well has an inclined portion and even may be close to the horizontal. The pumping installation is then generally lowered into a part of the well which is strongly inclined.

Claims (14)

1) Dispositif mélangeur continu (1) comportant un corps (17) dans lequel circule des fluides entre une entrée (2) et vers une sortie (3) dudit corps, caractérisé en ce qu'au moins deux fluides de viscosités différentes pénètrent par ladite entrée, en ce qu'il comporte un arbre (4) rotatif comportant au moins deux pales (7, 7a) et en ce qu'il est adapté à fournir en sortie dudit corps un mélange desdits deux fluides, ledit mélange ayant une viscosité inférieure à celle du fluide d'entrée le plus visqueux. 1) continuous mixing device (1) comprising a body (17) in which fluids circulate between an inlet (2) and towards an outlet (3) of said body, characterized in that at least two fluids of different viscosities penetrate through said inlet, in that it comprises a rotary shaft (4) comprising at least two blades (7, 7a) and in that it is adapted to supply at the outlet of said body a mixture of said two fluids, said mixture having a lower viscosity to that of the most viscous inlet fluid. 2) Dispositif selon la revendication 1, caractérisé en ce que le profil des pales (7, 7a) est tel que, sans circulation desdits fluides, la mise en rotation des pales procure une force de réaction sensiblement parallèle à l'axe de rotation (4) et dirigée dans le même sens (15) que l'écoulement quand celui-ci est établi. 2) Device according to claim 1, characterized in that the profile of the blades (7, 7a) is such that, without circulation of said fluids, the rotation of the blades provides a reaction force substantially parallel to the axis of rotation ( 4) and directed in the same direction (15) as the flow when the latter is established. 3) Dispositif selon la revendication 1, caractérisé en ce que le profil des pales est tel que, sans circulation desdits fluides, la mise en rotation des pales ne procure pas de force de réaction de grandeur notable parallèlement à l'axe de rotation (4). 3) Device according to claim 1, characterized in that the profile of the blades is such that, without circulation of said fluids, the rotation of the blades does not provide a reaction force of significant magnitude parallel to the axis of rotation (4 ). 4) Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il comporte au moins un ensemble de trois étages de pales, chaque étage étant constitué par au moins deux pales ayant le même volume cylindrique de révolution, en ce que lesdits étages sont décalés de 120° par rapport à l'axe dudit arbre et en ce que les volumes cylindriques engendrés par la révolution de chaque étage de pales sont sensiblement adjacents. 4) Device according to one of the preceding claims, characterized in that it comprises at least one set of three stages of blades, each stage being constituted by at least two blades having the same cylindrical volume of revolution, in that said stages are offset by 120 ° relative to the axis of said shaft and in that the cylindrical volumes generated by the revolution of each stage of blades are substantially adjacent. 5) Dispositif selon la revendication 4, caractérisé en ce qu'un étage comporte deux pales disposées à 180° sur l'arbre et en ce que ledit dispositif comporte quatre desdits ensembles. 5) Device according to claim 4, characterized in that a stage comprises two blades arranged at 180 ° on the shaft and in that said device comprises four of said assemblies. 6) Dispositif selon l'une des revendications précédentes, caractérisé en ce que ledit arbre (4, 42) est lié en rotation avec l'arbre (43) d'une pompe hydraulique (25) et en ce que la sortie (3) dudit corps débouche dans l'aspiration (13) de ladite pompe. 6) Device according to one of the preceding claims, characterized in that said shaft (4, 42) is connected in rotation with the shaft (43) of a hydraulic pump (25) and in that the outlet (3) said body opens into the suction (13) of said pump. 7) Dispositif selon la revendication 6, caractérisé en ce que ladite pompe est entraînée en rotation par un moteur hydraulique ( 26) entraîné en rotation par l'injection d'un fluide sous pression. 7) Device according to claim 6, characterized in that said pump is driven in rotation by a hydraulic motor (26) driven in rotation by the injection of a pressurized fluid. 8) Dispositif selon la revendication 7, caractérisé en ce qu'une partie dudit fluide sous pression injecté dans ledit moteur est conduit à l'entrée (38) dudit corps. 8) Device according to claim 7, characterized in that a part of said pressurized fluid injected into said motor is led to the inlet (38) of said body. 9) Dispositif selon l'une des revendications précédentes, caractérisé en ce que ledit corps comporte des déflecteurs (11) dont la bordure interne est sensiblement tangente au volume de révolution des pales. 9) Device according to one of the preceding claims, characterized in that said body comprises deflectors (11) whose internal edge is substantially tangent to the volume of revolution of the blades. 10) Procédé de pompage d'un fluide de haute viscosité, caractérisé en ce que l'on amène ledit fluide (22) ainsi qu'au moins un autre fluide de plus basse viscosité à l'entrée d'un dispositif (1) selon l'une des revendications précédentes et en ce que le mélange en sortie dudit corps est conduit à l'aspiration (13) d'une pompe (25). 10) A method of pumping a high viscosity fluid, characterized in that said fluid (22) is brought as well as at least one other fluid of lower viscosity to the inlet of a device (1) according to one of the preceding claims and in that the mixture leaving said body is led to the suction (13) of a pump (25). 11) Procédé selon la revendication 10, caractérisé en ce que l'on amène une partie du fluide moteur à l'entrée dudit corps (2, 38), ledit fluide moteur étant injecté sous pression pour mettre en rotation le moteur hydraulique d'entraînement en rotation de la pompe et du dispositif. 11) Method according to claim 10, characterized in that one brings a part of the working fluid to the inlet of said body (2, 38), said working fluid being injected under pressure to rotate the hydraulic drive motor. in rotation of the pump and the device. 12) Utilisation du dispositif selon l'une des revendications 1 à 9 dans une installation de pompage d'un pétrole brut à haute viscosité dans un puits (20) comportant un cuvelage (21), caractérisée en ce que ladite installation comporte un conduit (8, 41, 40) d'arrivée du brut à l'entrée dudit dispositif (2, 38), un conduit reliant la sortie (3) dudit dispositif à l'aspiration (13) d'une pompe, un moteur hydraulique (26) pour mouvoir en rotation la pompe (25) et ledit dispositif (1, 24), un conduit d'injection (35) du fluide moteur reliant une installation d'injection (28) à la surface et le moteur, un conduit ((30) de sortie de la pompe remontant le mélange à la surface et un conduit de sortie ((29) du moteur remontant une partie du fluide moteur en surface, l'autre partie étant amenée à l'entrée dudit dispositif par un autre conduit (37). 12) Use of the device according to one of claims 1 to 9 in an installation for pumping crude oil with high viscosity in a well (20) comprising a casing (21), characterized in that said installation comprises a conduit ( 8, 41, 40) of arrival of the crude oil at the inlet of said device (2, 38), a conduit connecting the outlet (3) of said device to the suction (13) of a pump, a hydraulic motor (26 ) to rotate the pump (25) and said device (1, 24), an injection pipe (35) of the working fluid connecting an injection installation (28) to the surface and the motor, a pipe (( 30) for the outlet of the pump bringing the mixture up to the surface and an outlet duct ((29) for the engine raising a part of the working fluid to the surface, the other part being brought to the inlet of said device by another duct ( 37). 13) Utilisation selon la revendication 12, caractérisée en ce que l'on place un moyen d'étanchéité (45) entre ledit conduit d'amenée du brut (8) et les parois du puits (20) délimitant un conduit annulaire (46) communiquant jusqu'en surface et en ce le mélange pompé remonte en surface par ledit conduit annulaire. 13) Use according to claim 12, characterized in that one places a sealing means (45) between said crude supply conduit (8) and the walls of the well (20) delimiting an annular conduit (46) communicating up to the surface and in this the pumped mixture rises to the surface through said annular duct. 14) Utilisation selon la revendication 12, caractérisée en ce qu'un seul conduit (47) remonte ladite partie du fluide moteur et ledit mélange et en ce qu'en surface ce conduit communique avec une installation (48) de séparation notamment du pétrole brut et du fluide moteur. 14) Use according to claim 12, characterized in that a single conduit (47) goes up said part of the working fluid and said mixture and in that at the surface this conduit communicates with an installation (48) for separating in particular crude oil and working fluid.
EP92402438A 1991-09-10 1992-09-07 Continuous mixing device, process and use in a pumping plant for high viscosity fluid Expired - Lifetime EP0532397B1 (en)

Applications Claiming Priority (2)

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FR9111297 1991-09-10
FR9111297A FR2680983B1 (en) 1991-09-10 1991-09-10 CONTINUOUS MIXER DEVICE, METHOD AND USE IN A PUMP INSTALLATION OF A HIGH VISCOSITY FLUID.

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EP0532397A1 true EP0532397A1 (en) 1993-03-17
EP0532397B1 EP0532397B1 (en) 1995-12-13

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CA (1) CA2077926C (en)
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US5320500A (en) 1994-06-14
CA2077926C (en) 2005-07-05
FR2680983B1 (en) 1993-10-29
DE69206726D1 (en) 1996-01-25
CA2077926A1 (en) 1993-03-11
EP0532397B1 (en) 1995-12-13
FR2680983A1 (en) 1993-03-12

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