CN115614003A - Electric submersible vane pump lifting system and petroleum production line - Google Patents
Electric submersible vane pump lifting system and petroleum production line Download PDFInfo
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- CN115614003A CN115614003A CN202110802013.0A CN202110802013A CN115614003A CN 115614003 A CN115614003 A CN 115614003A CN 202110802013 A CN202110802013 A CN 202110802013A CN 115614003 A CN115614003 A CN 115614003A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000003208 petroleum Substances 0.000 title description 4
- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 230000001012 protector Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 9
- 239000003921 oil Substances 0.000 description 99
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 15
- 238000010276 construction Methods 0.000 description 9
- 238000005086 pumping Methods 0.000 description 7
- 238000000605 extraction Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/128—Adaptation of pump systems with down-hole electric drives
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- Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an electric submersible vane pump lifting system and an oil production line. The electric submersible vane pump lifting system comprises: a wellhead assembly having an oil inlet and an oil outlet; the sleeve is connected with one end of the wellhead device, which is far away from the oil outlet; the vane pump is arranged inside the sleeve; the downhole driving structure is arranged inside the sleeve and is in driving connection with the vane pump; the oil pipe is arranged inside the sleeve, one end of the oil pipe is connected with an oil inlet of the wellhead device, and the other end of the oil pipe is connected with one end, far away from the underground driving structure, of the vane pump; and the control device is electrically connected with the underground driving structure. The invention solves the problem of poor lifting effect of the vane pump in the prior art.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to an electric submersible vane pump lifting system and an oil production line.
Background
The vane pump is a lifting device for oil extraction well developed in recent years, is used for oil extraction in oil field, and has the basic principle that: when the vane pump rotor rotates, the tip of the vane clings to the inner surface of the stator under the action of centrifugal force. The working volume formed by the two blades, the rotor and the inner surface of the stator firstly absorbs oil from small to large and then discharges oil from large to small, and when the blades rotate for one circle, oil absorption and oil discharge are completed twice.
The vane pump lifting process is a novel artificial lifting process technology developed in recent years, has the characteristics of energy conservation, high temperature resistance and the like, and is suitable for a heavy oil thermal production well. The pump has the characteristics of high efficiency, good energy saving property, small volume, high temperature resistance, long service life, less investment for well construction at one time, simple and easy operation and construction and the like.
The vane pump lifting process utilizes the rotation of the driving head to drive the oil pumping rod and the vane pump rotor, the rotor rotates to suck oil into the oil pipe and lift the oil pipe to the ground, and the vane pump lifting process is mainly applied to thickened oil huff and puff wells and achieves better effect.
The structure of the tubular column of the vane pump lifting system is similar to that of a screw pump lifting system, and the oil extraction system mainly comprises a driving head, a sucker rod, a vane pump, a gas-sand anchor, an oil pipe anchor and a tail pipe from top to bottom. When the oil pumping unit enters a well, the vane pump is connected with the oil pipe anchor and then is connected with the oil pipe, the oil pumping unit is driven by the driving head to rotate on the ground, the torque is transmitted to the pump working rotor by the sucker rod string, and the rotor rotates to suck oil into the oil pipe and lift the oil pipe to the ground.
The existing vane pump lifting process technology needs a sucker rod to transfer energy, increases energy consumption, and solves the problems of eccentric wear of a pipe rod and breakage and falling of the sucker rod in an inclined well and a horizontal well; secondly, production parameters cannot be adjusted through a ground intelligent control cabinet, and the optimized operation of the oil extraction system is difficult to realize; and thirdly, the packing box at the well mouth has the problem of oil leakage at the sealing part of the well mouth and the rod column.
Therefore, the prior art has the problem of poor lifting process effect of the vane pump.
Disclosure of Invention
The invention mainly aims to provide an electric submersible vane pump lifting system and a petroleum production line, and aims to solve the problem of poor lifting process effect of a vane pump in the prior art.
To achieve the above object, according to one aspect of the present invention, there is provided an electric submersible vane pump lifting system comprising: a wellhead assembly having an oil inlet and an oil outlet; the sleeve is connected with one end of the wellhead device, which is far away from the oil outlet; the vane pump is arranged inside the sleeve; the downhole driving structure is arranged inside the sleeve and is in driving connection with the vane pump; the oil pipe is arranged inside the sleeve, one end of the oil pipe is connected with an oil inlet of the wellhead device, and the other end of the oil pipe is connected with one end, far away from the underground driving structure, of the vane pump; and the control device is electrically connected with the underground driving structure.
Further, the control device has a connection cable extending through the wellhead into the interior of the casing and electrically connected to the downhole driving structure.
Further, at least a portion of the connecting cable overlaps a circumferential outer sidewall of the tubing.
Further, the oil pipe, the vane pump and the underground driving structure are sequentially connected from top to bottom along the length direction of the sleeve.
Further, the wellhead assembly includes: the body part is provided with an oil inlet, and the sleeve and the oil pipe are respectively connected with the body part; the oil outlet pipe is provided with an oil outlet and is connected with the circumferential side wall of the body part.
Further, the downhole driving structure comprises: the control device is electrically connected with the underground motor; and two ends of the coupler are respectively connected with the underground motor and the vane pump.
Further, the downhole driving structure further comprises a screen pipe, and the screen pipe is arranged between the coupling and the downhole motor.
Further, the downhole driving structure further comprises a protector, and the protector is arranged between the screen pipe and the downhole motor.
Furthermore, the sleeve, the vane pump, the underground driving structure and the oil pipe are all located below the horizontal ground, and the control device is located above the horizontal ground.
According to another aspect of the invention, an oil production line is provided, comprising the electric submersible vane pump lifting system described above.
By applying the technical scheme of the invention, the electric submersible vane pump lifting system comprises a wellhead device, a casing, a vane pump, an underground driving structure, an oil pipe and a control device. The wellhead device is provided with an oil inlet and an oil outlet; the sleeve is connected with one end of the wellhead device far away from the oil outlet; the vane pump is arranged inside the sleeve; the underground driving structure is arranged inside the sleeve and is in driving connection with the vane pump; the oil pipe is arranged inside the sleeve, one end of the oil pipe is connected with an oil inlet of the wellhead device, and the other end of the oil pipe is connected with one end, far away from the underground driving structure, of the vane pump; the control device is electrically connected with the downhole driving structure.
When the electric submersible vane pump lifting system is used, the underground driving structure is directly driven and controlled through the control device, so that the energy transmission link of the middle sucker rod is reduced, the energy consumption is greatly reduced, and the problems of eccentric wear of a pipe rod and breakage and falling of the sucker rod are thoroughly solved. And moreover, production parameters are adjusted through the control device, and the optimized operation of the oil extraction system is easy to realize. Meanwhile, because the wellhead device of the electric submersible vane pump lifting system is connected with the oil pipe, the wellhead does not have a packing box of an oil pumping well, the problem of oil leakage at the sealing part of the wellhead and a rod string is thoroughly avoided, and the strict environmental protection requirement of the oil exploitation industry is met. Therefore, the problem of poor lifting process effect of the vane pump in the prior art is effectively solved by using the electric submersible vane pump lifting system.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic view of an electrical submersible vane pump according to one embodiment of the present invention.
10. A wellhead assembly; 11. an oil inlet; 12. an oil outlet; 13. a body portion; 14. an oil outlet pipe; 20. a sleeve; 30. a vane pump; 40. a downhole driving structure; 41. a downhole motor; 42. a coupling; 43. a screen pipe; 44. a protector; 50. an oil pipe; 60. A control device; 61. and connecting the cable.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is to be noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.
In order to solve the problem that the lifting process effect of the vane pump 30 in the prior art is poor, the application provides an electric submersible vane pump lifting system and an oil production line.
The petroleum production line of the present application also has a dynamic submersible vane pump 30 lift system as described below.
As shown in fig. 1, the electrical submersible vane pump lifting system in this application comprises a wellhead assembly 10, a casing 20, a vane pump 30, a downhole driving structure 40, a tubing 50, and a control device 60. The wellhead 10 has an oil inlet 11 and an oil outlet 12; the casing 20 is connected with one end of the wellhead device 10 far away from the oil outlet 12; the vane pump 30 is disposed inside the casing 20; the downhole driving structure 40 is arranged inside the casing 20, and the downhole driving structure 40 is in driving connection with the vane pump 30; the oil pipe 50 is arranged inside the casing 20, one end of the oil pipe 50 is connected with the oil inlet 11 of the wellhead device 10, and the other end of the oil pipe 50 is connected with one end of the vane pump 30 far away from the downhole driving structure 40; the control device 60 is electrically connected to the downhole driving structure 40.
When the electric submersible vane pump lifting system is used, the underground driving structure 40 is directly driven and controlled through the control device 60, so that the energy transmission link of the middle sucker rod is reduced, the energy consumption is greatly reduced, and the problems of eccentric wear of a pipe rod and breakage and falling of the sucker rod are thoroughly avoided. Moreover, the production parameters are adjusted by the control device 60, so that the optimized operation of the oil extraction system is easy to realize. Meanwhile, because the wellhead device 10 of the electric submersible vane pump lifting system is connected with the oil pipe 50, a packing box of an oil pumping well does not exist in the wellhead, the problem of oil leakage at the sealing part of the wellhead and a rod string is thoroughly solved, and the strict environmental protection requirement of the oil exploitation industry is met. Therefore, the problem of poor lifting process effect of the vane pump 30 in the prior art is effectively solved by using the lifting system of the electric submersible vane pump in the application.
Specifically, downhole driving structure 40 includes downhole motor 41, coupling 42, screen 43, and protector 44. The control device 60 is electrically connected with the downhole motor 41; two ends of the coupling 42 are respectively connected with the downhole motor 41 and the vane pump 30; downhole driving structure 40 further includes a screen 43 disposed between coupling 42 and downhole motor 41; the downhole driving structure 40 further comprises a protector 44 arranged between the screen 43 and the downhole motor 41. In this application, motor 41 circular telegram is rotatory in the pit, and it is rotatory to drive impeller pump 30 through shaft coupling 42, and shaft coupling 42 is concentric with the rotor in the impeller pump 30 pump case, and shaft coupling 42 adopts spline structure, and the outward appearance of axle has fore-and-aft keyway, and the cover also has corresponding keyway at epaxial rotating member, and shaft coupling 42 only needs the transmission moment of torsion and bears the weight of the atress not abominable, and the transmission moment of torsion is big, and is to neutrality good, convenient to detach, can keep with axle synchronous revolution.
In the present application, the vane pump 30 is a type of volumetric pump that is made up of three parts: rotor, blades, stator. The rotor of the vane pump 30 in the pump shell of the vane pump 30 has an eccentricity with the center of the pump shaft, the size is e, the eccentricity is 3mm, meanwhile, a plurality of vanes are arranged on the rotor, the vanes are embedded in a rotor groove, the vanes can move along the radial direction of the pump, simultaneously, along with the rotation of the pump rotor, one end of each vane is tightly attached to the inner surface of the stator under the action of centrifugal force, and the two vanes, the outer surface of the rotor and the inner surface of the stator form the working volume of the pump.
Under the drive of the rotary motion of the motor rotor, when the rotor drives the rotor blades to rotate, the working volume firstly absorbs oil from the well from small to large, fluid firstly flows in from the liquid inlet and flows into the cavity of the first-stage vane pump 30 from the pump suction window, and the volume of the sealed working cavity in the pump is changed by the rotation of the blades so as to realize oil absorption and oil pressing and output high-pressure fluid to flow out of the pump discharge window to the cavity of the second-stage vane pump 30. The valve plate is provided with a suction inlet which is a discharge window of the first stage and a liquid inlet of the second stage, and the like. The end surfaces of the valve plate, the rotor, the blades and the stator are sealed by adopting mirror surfaces. In one embodiment of the present application, the single-stage pump is rated at a lifting pressure of 3Mpa, and the number of pump stages can be combined according to the lifting pressure requirement. Under the driving of the rotation of the downhole motor 41, the crude oil is lifted to the surface through the oil pipe 50 by the series combination of the multistage vane pumps 30. In addition, in the application, after the downhole motor 41 is electrified and rotated, the shaft coupling 42 drives the vane pump 30 to rotate, the shaft coupling 42 is concentric with a rotor in a pump shell of the vane pump 30, the shaft coupling 42 adopts a spline structure, a longitudinal key groove is formed in the outer surface of the shaft, a rotating part sleeved on the shaft is also provided with a corresponding key groove, the shaft coupling 42 only needs to transmit torque and bears stress, the transmission torque is large, the centering performance is good, the disassembly is convenient, and the synchronous rotation with the shaft can be kept.
Compared with the lifting process of the electric submersible vane pump, the lifting system of the electric submersible vane pump has the following advantages that firstly, the electric submersible vane pump 30 has higher temperature resistance, the electric submersible screw pump is expensive in a high-temperature environment, and the electric submersible screw pump has shorter service life in a high-temperature high-pressure well; secondly, the requirement of the processing and manufacturing process of the coupling 42 of the electric submersible vane pump 30 is low, the processing and manufacturing process difficulty of the flexible shaft of the electric submersible screw pump is high, and the cost is high.
Specifically, the control device 60 has a connection cable 61, and the connection cable 61 extends through the wellhead 10 into the interior of the casing 20 and is electrically connected to the downhole driving structure 40.
Optionally, at least a portion of the connecting cable 61 overlaps the circumferentially outer sidewall of the tubing 50. That is to say, when the control device 60 is connected to the downhole driving structure 40 through the connection cable 61, the middle part of the connection cable 61 may be fixed on the circumferential outer sidewall of the oil pipe 50, so as to effectively ensure that the cable does not shake in the downhole, and further ensure the stability of the electrical connection between the control device 60 and the downhole driving structure 40.
In one embodiment of the present application, the oil pipe 50, the vane pump 30, and the downhole driving structure 40 are connected in sequence from top to bottom along the length of the casing 20.
Optionally, the wellhead 10 includes a body portion 13 and a flowline 14. The body portion 13 has an oil inlet 11, and the sleeve 20 and the oil pipe 50 are connected to the body portion 13, respectively; the oil outlet pipe 14 has an oil outlet port 12, and the oil outlet pipe 14 is connected to the circumferential side wall of the body portion 13. By providing the flow line 14, the downhole oil can be led out through the flow line 14.
Specifically, downhole driving structure 40 includes downhole motor 41, coupling 42, screen 43, and protector 44. The control device 60 is electrically connected with the downhole motor 41; two ends of the coupling 42 are respectively connected with the downhole motor 41 and the vane pump 30; downhole driving structure 40 further includes a screen 43 disposed between coupling 42 and downhole motor 41; downhole driving structure 40 also includes a protector 44 disposed between screen 43 and downhole motor 41.
Also, in the present application, the casing 20, the vane pump 30, the downhole driving structure 40, and the tubing 50 are all located below the horizontal surface, and the control device 60 is located above the horizontal surface.
It should be noted that the downhole motor 41 in the present application may be a submersible motor.
In one embodiment of the present application, when using the electric submersible vane pump lift system of the present application, the main pump down works as follows:
1 preparing a construction tool, cleaning a field and a tool entering the well, carefully measuring the oil pipe 50 and a matched tool, wherein the measurement error is less than 2 mm/root.
Before the telescopic pressure-proof anchor enters the well, the sand surface is detected, and then the scraper of the sleeve 20 scrapes the wall of the lower pump well section. Then, the well is pigged by a pigging gauge; the well is washed circularly before the pipe column is put down, the oil pipe 50 passes through the pipe gauge one by one before the well is put down, the oil pipe 50 which is put down needs to be kept clean, the screw thread is complete, the pipe body has no defects of crack, perforation, abrasion and the like, the screw thread of the oil pipe 50 is coated with proper amount of screw thread oil, and the oil pipe is screwed up according to the specified torque and rotating speed; before running the well, the tool is kept clean, the thread is intact, and the thread of the oil pipe 50 is coated with a proper amount of thread oil.
3, pipe column descending: the pipe column structure is hung from bottom to top sequentially from a screwed plug, 2 sand setting oil pipes 50, a spiral gas sand anchor, a check valve, a telescopic anti-pressure anchor, a downhole motor 41, a coupler 42, an electric submersible vane pump 30, an oil pipe 50 and a wellhead oil pipe 50.
4 telescopic press-proof anchor anchoring: in order to ensure that the oil pipe 50 extends downwards to leave a margin when the telescopic anti-pressure anchor anchoring locking block injects steam at the lowest end of the anchor core cylinder, the well head is lifted by the height of one oil pipe 50, the uppermost oil pipe 50 is disassembled, the lower end oil pipe 50 is connected to the well head again, the well head is rotated clockwise for 9-12 circles until the anchor anchoring has obvious rebound force, the well head is rotated clockwise continuously, and the well head is lowered to be seated on the large four-way joint of the well head to be connected with a well head flange.
5, starting pumping:
the submersible motor is connected with a cable, the cable is bound outside the oil pipe 50 and passes through a wellhead, and the submersible motor is connected with an intelligent control cabinet, namely a control device 60 in the application. The rotation speed of the submersible vane pump 30 can be adjusted through the starting or closing of the ground intelligent control cabinet. The pumping running-in is needed when a new pump is put into the well, the pump is pumped for several days at a low rotating speed of 80r/min, then the rotating speed is increased to the rotating speed required by the yield, and the rotating speed is reduced by a frequency converter before the pump is stopped, and then the pump is stopped.
Points of construction attention
Serious damage may occur inadvertently during the site operation. The field service personnel should carefully understand the construction process and method before construction to ensure that the vane pump 30 can be normally pumped after construction.
(1) In the whole construction process, the oil pipe 50, the sucker rod and the pump must be kept clean, dirt such as sand, impurities, scrap iron and the like is strictly forbidden to be carried into the well, and the pump is prevented from being stuck and reworked;
(2) Various downhole tools are thoroughly inspected before being put into the well, and the tools can be put into the well after being inspected to be qualified; the downhole tools, accessories and the like are completely prepared and relevant data such as inner diameter, outer diameter, buckling type, length and the like are recorded, the measurement of the pipe column is accurate, and the operation weight indicator is sensitive and reliable;
(3) The well-descending pipe column screw thread must be coated with high-temperature screw thread oil, and the screw thread joint is up to the specified torque to prevent tripping and other accidents;
(4) In the process of pipe column descending, the descending speed is stable, frequent lifting and descending in midway are not allowed, if the situation of resistance occurs, the pier cannot be hardened, and the descending can be continued after analysis and treatment. After the end is reached, the blade pump 30 is required to be repeatedly lifted for many times, and the spline shaft is ensured to be inserted into the spline cylinder;
(5) Before the tool is run into the well, the proper integrity of all tool connections should be checked according to the construction design, and the tool tightened and connected in the proper sequence.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
1. the problem of poor lifting process effect of the vane pump in the prior art is effectively solved;
2. simple structure and stable performance.
It is to be understood that the above-described embodiments are only a few, and not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An electric submersible vane pump lifting system, comprising:
a wellhead (10), said wellhead (10) having an oil inlet (11) and an oil outlet (12);
a casing (20), wherein the casing (20) is connected with one end of the wellhead device (10) far away from the oil outlet (12);
a vane pump (30), the vane pump (30) being disposed inside the casing (20);
a downhole driving structure (40), wherein the downhole driving structure (40) is arranged inside the casing (20), and the downhole driving structure (40) is in driving connection with the vane pump (30);
the oil pipe (50), the oil pipe (50) is arranged inside the casing (20), one end of the oil pipe (50) is connected with the oil inlet (11) of the wellhead device (10), and the other end of the oil pipe (50) is connected with one end, away from the downhole driving structure (40), of the vane pump (30);
a control device (60), the control device (60) being electrically connected with the downhole driving structure (40).
2. The electrical submersible vane pump lifting system according to claim 1, characterized by the control device (60) having a connection cable (61), the connection cable (61) extending through the wellhead device (10) into the interior of the casing (20) and electrically connected to the downhole driving structure (40).
3. The electrical submersible vane pump lifting system of claim 2, wherein at least a portion of the connecting cable (61) overlaps the circumferential outer sidewall of the oil pipe (50).
4. The electrical submersible vane pump lifting system of claim 1, wherein the tubing (50), the vane pump (30), and the downhole driving structure (40) are connected in series from top to bottom along the length of the casing (20).
5. The electrical submersible vane pump lifting system according to any of claims 1 to 4, characterized in that the wellhead device (10) comprises:
a body portion (13), the body portion (13) having the oil inlet (11), and the sleeve (20) and the oil pipe (50) being connected to the body portion (13), respectively;
an oil outlet pipe (14), the oil outlet pipe (14) having the oil outlet (12), and the oil outlet pipe (14) being connected with a circumferential side wall of the body portion (13).
6. The electrical submersible vane pump lift system of any of claims 1 to 4, characterized in that the downhole driving structure (40) comprises:
a downhole motor (41), the control device (60) being electrically connected to the downhole motor (41);
and the two ends of the coupler (42) are respectively connected with the underground motor (41) and the vane pump (30).
7. The electrical submersible vane pump lifting system of claim 6, wherein the downhole driving structure (40) further comprises a screen (43), the screen (43) being disposed between the coupling (42) and the downhole motor (41).
8. The electrical submersible vane pump lift system of claim 7, wherein the downhole driving structure (40) further comprises a protector (44), the protector (44) being disposed between the screen (43) and the downhole motor (41).
9. The electrical submersible vane pump lifting system according to any one of claims 1 to 4, characterized in that the casing (20), the vane pump (30), the downhole driving structure (40), and the tubing (50) are all located below horizontal ground, and the control device (60) is located above horizontal ground.
10. An oil production line comprising the electrical submersible vane pump lift system of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110802013.0A CN115614003A (en) | 2021-07-15 | 2021-07-15 | Electric submersible vane pump lifting system and petroleum production line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110802013.0A CN115614003A (en) | 2021-07-15 | 2021-07-15 | Electric submersible vane pump lifting system and petroleum production line |
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| CN115614003A true CN115614003A (en) | 2023-01-17 |
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