CN117211738A - Wisdom oil production device with liquid counter weight - Google Patents
Wisdom oil production device with liquid counter weight Download PDFInfo
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- CN117211738A CN117211738A CN202311475887.5A CN202311475887A CN117211738A CN 117211738 A CN117211738 A CN 117211738A CN 202311475887 A CN202311475887 A CN 202311475887A CN 117211738 A CN117211738 A CN 117211738A
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- box body
- leather bag
- liquid
- plate
- counterweight
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- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title description 3
- 239000010985 leather Substances 0.000 claims abstract description 49
- 238000005086 pumping Methods 0.000 claims abstract description 18
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims 2
- 241001023788 Cyttus traversi Species 0.000 description 19
- 238000005265 energy consumption Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011664 nicotinic acid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides an intelligent oil extraction device with a liquid counterweight, which is characterized by comprising a beam pumping unit, a counterweight bracket arranged at the tail end of the beam, a first screw rod arranged on the counterweight bracket along the length direction of the beam, a second motor used for driving the first screw rod to move, and a counterweight block locked on the first screw rod and used for moving along the length direction of the beam when the second motor drives the first screw rod to rotate; the multifunctional leather bag comprises a box body, a leather bag and a supporting plate, wherein the box body is connected with a counterweight bracket, liquid is sealed in the box body, a micro groove is formed in the surface of an upper plate, and an inner cavity of the box body is communicated with an inner cavity of the leather bag. The balance degree of the walking beam is changed through the movement of the balancing weight and the liquid, and the micro grooves reduce the resistance of the liquid in flowing and save energy.
Description
Technical Field
The invention relates to the technical field of oilfield production equipment, in particular to an intelligent oil extraction device with a liquid counterweight.
Background
Beam-pumping units are widely used in oil fields. The beam pumping unit needs to be balanced in the period of one crank rotation; when the oil pumping machine runs for a long time, wax and mineral substances are easy to adhere to the wall of the underground oil pipe, the underground liquid level changes, the load of the oil pumping machine also changes, and the balance of the oil pumping machine needs to be adjusted in time.
Currently, the balance degree of the pumping unit is generally adjusted by adopting a manual method. When the balance of the pumping unit is adjusted, the balance state is measured by measuring and calculating the current difference on site, the balance mechanism is stopped, unloaded and adjusted, then the measuring and the calculating and checking are started again, the balance rate of the pumping unit can reach 80 percent roughly only by repeating the steps for a plurality of times, and the balance rate can be fluctuated in the operation.
In the chinese patent with application number 201710280655.2, a balance adjusting device for an oil pumping unit is provided, and two liquid storage tanks are respectively fixed at two ends of a walking beam, and the balance adjusting device comprises a first liquid storage tank, a second liquid storage tank, a liquid guide pipe, an air guide pipe, an electric control valve, a two-way water pump, a liquid amount measuring device, a communicating pipe liquid level meter and a controller. When liquid in the device flows in the liquid storage tank, the friction resistance between the liquid and the wall surface is larger, and the gravity center transfer speed of the liquid is slower.
Disclosure of Invention
The invention aims to overcome the defect of energy waste of the existing crank balance type oil pumping unit, and provides an intelligent oil extraction device with a liquid counterweight, so as to achieve the aim of energy conservation.
The invention is realized by the following technical scheme: the intelligent oil extraction device with the liquid counterweight comprises a beam pumping unit, wherein the beam pumping unit comprises a crank, a connecting rod, a beam, a horsehead, a support, a motor, a speed reducer and a controller, the crank, the connecting rod, the beam and the horsehead are sequentially connected, the motor drives the crank, the connecting rod, the beam and the beam to move after being decelerated by the speed reducer, the beam is connected with the support through a rotating shaft, the beam rotates around the rotating shaft, the beam drives the horsehead to move, and the controller controls the motor to move; the device also comprises a box body and a counterweight bracket, wherein the box body is arranged at one end of the walking beam, which is far away from the horsehead, the box body is positioned at the left side of the rotating shaft, and the counterweight bracket is connected with the box body and is positioned at the upper part of the box body; the balance weight bracket is provided with a first lead screw, a second motor used for driving the first lead screw to move and a balancing weight which is locked on the first lead screw and can move along the length direction of the walking beam when the second motor drives the first lead screw to rotate; the controller controls the movement of the second motor; the box body is formed by welding a front plate, a rear plate, a left plate, a right plate, an upper plate and a lower plate, the upper plate is cut by a first plane to obtain the cross section of the upper plate, the outline of the inner surface of the cross section of the upper plate is a first sine wave, the length of one period of the first sine wave is 100-127 micrometers, and the amplitude of the first sine wave is 100-120 micrometers; the device also comprises a leather bag, a supporting plate, a leather bag bracket, a first sliding block, a first rail and a first electric cylinder, wherein the inner cavity of the box body is communicated with the inner cavity of the leather bag, and the leather bag is positioned outside the box body; the leather bag support is fixed on the lower plate, the bottom of the leather bag is in contact with the support plate, the support plate is fixed on the first sliding block, the first sliding block slides on a first track in the vertical direction, the first track is fixed on the leather bag support, the support plate is connected with a telescopic link of a first electric cylinder, the other end of the first electric cylinder is connected with the leather bag support, and the first electric cylinder is electrically connected with the controller.
Preferably, the front plate is cut with a second plane to obtain a cross section of the front plate, and an inner surface profile of the cross section of the front plate is a second sine wave, a period of the second sine wave is 100-127 micrometers, and an amplitude of the second sine wave is 100-120 micrometers.
Preferably, a support column is arranged between the upper plate and the lower plate of the box body.
Preferably, the first plane is used for cutting the left plate to obtain the cross section of the left plate, the outline of the inner surface of the cross section of the left plate is a third sine wave, the length of one period of the third sine wave is 100-127 micrometers, and the amplitude of the third sine wave is 100-120 micrometers.
The beneficial effects of the invention are as follows:
the bionic design is carried out by referring to the shells, and the micro grooves are formed in the surfaces, so that the resistance of liquid flowing can be reduced, and the abrasion is reduced. The micro grooves on the shell surface in nature have the effect of reducing the fluid resistance, and sand dunes in the desert are wavy and have the effect of reducing drag. The liquid is staggered at the top end of the groove when flowing, the existence of the groove prevents the transverse pulsation of the fluid in the groove, the dissipation of energy is reduced, and the turbulent kinetic energy in the turbulent boundary layer is reduced, so that the effect of reducing drag is achieved.
In the oil extraction process, when the oil field load changes, the pulling force of the lifting rope moves upwards is increased, and at the moment, the supporting plate moves downwards from top to bottom, so that liquid in the box body enters the leather bag, the moment on the left side of the walking beam is increased, the load of the motor is reduced, and the energy consumption is reduced.
In the oil extraction process, when the oil field load changes, the pulling force of the lifting rope moves upwards is reduced, and at the moment, the supporting plate moves upwards from below, so that liquid in the leather bag enters the box body, the moment on the left side of the walking beam is reduced, the load of the motor is lightened, and the energy consumption is reduced.
In one movement cycle of the horsehead, when the horsehead moves from the horizontal position to the upper dead point, the supporting plate moves from top to bottom, so that liquid in the box body enters the leather bag, the moment on the left side of the walking beam is increased, the load of the motor is reduced, and the energy consumption is reduced; when the horse head moves from the top dead center to the horizontal position, the supporting plate moves from bottom to top, so that liquid in the leather bag enters the box body, the moment on the left side of the walking beam is reduced, the load of the motor is lightened, and the energy consumption is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a structural diagram of a pumping unit.
Fig. 2 is a structural view of the weight support and the case with the front plate removed.
Fig. 3 is a cross-sectional view of the upper plate 8, with the cross-sectional normal taken in the front-rear direction.
Fig. 4 is a structural view of the case with the bellows.
The device comprises a 1-counterweight bracket, a 2-first screw, a 3-counterweight, a 4-lower plate, a 5-rear plate, a 6-left plate, a 7-right plate, an 8-upper plate, a 14-supporting column, a 26-leather bag, a 27-supporting plate, a 28-first sliding block, a 29-first track, a 30-first electric cylinder, a 31-leather bag bracket, a 32-second leather bag, a 33-first stop valve, a 34-air source, a 35-second stop valve, a 36-camera, a 37-second spring, a 38-push plate, a 61-rope hanger, a 62-lifting rope, a 63-horsehead, a 64-walking beam, a 65-bracket, a 66-cross beam, a 67-connecting rod, a 68-crank pin device, a 69-crank, a 70-speed reducer, a 71-braking device, a 72-base, a 73-adhesive tape, a 74-motor, a 75-controller, a 76-rotating shaft and a 77-box.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
It should be noted that, the directions of the azimuth words "up, down, left and right" appearing herein refer to the up, down, left and right directions in fig. 4; the outward direction perpendicular to the paper surface means from the rear to the front. The directional terms appearing herein are established based on the ordinary usage by those skilled in the art and the drawings of the specification, and their appearance should not affect the scope of the invention. A first plane and a second plane are defined, wherein the normal line of the first plane is the front-back direction, and the normal line of the second plane is the up-down direction.
The present invention will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present invention.
Referring to fig. 1 to 4, an intelligent oil extraction device with liquid counterweight comprises an oil pumping unit, wherein the oil pumping unit comprises a rope hanger 61, a lifting rope 62, a horsehead 63, a walking beam 64, a bracket 65, a cross beam 66, a connecting rod 67, a crank pin device 68, a crank 69, a speed reducer 70, a brake device 71, a base 72, an adhesive tape 73, a motor 74 and a controller 75. The crank 69, the connecting rod 67, the cross beam 66, the walking beam 64 and the horsehead 63 are sequentially connected, the motor 74 is decelerated by the speed reducer 70 to drive the crank 69, the connecting rod 67, the cross beam 66 and the walking beam 64 to move, the walking beam 64 is connected with the support 65 through the rotating shaft 76, the walking beam 64 rotates around the rotating shaft 76, the walking beam 64 drives the horsehead 63 to move, and the controller controls the motor 74 to move;
the device further comprises a box body 77 and a counterweight bracket 1, wherein the box body 77 is arranged at one end of the walking beam 64, which is far away from the horsehead 63, the box body 77 is positioned at the left side of the rotating shaft 76, and the counterweight bracket 1 is connected with the box body 77 and is positioned at the upper part of the box body 77; the counterweight bracket 1 is provided with a first screw rod 2, a second motor for driving the first screw rod 2 to move, and a counterweight 3 which is locked on the first screw rod 2 and can move along the length direction of the walking beam 64 when the second motor drives the first screw rod 2 to rotate; the controller 75 controls the movement of the second motor; the box body 77 is sealed with liquid, the volume of the liquid accounts for 30-80% of the volume of the box body 77, the rest volume of the box body 77 is air, the box body 77 is formed by welding a lower plate 4, a rear plate 5, a left plate 6, a right plate 7, an upper plate 8 and a front plate, the upper plate 8 is cut by a first plane to obtain the cross section of the upper plate 8, the outline of the inner surface of the cross section of the upper plate 8 is a first sine wave, the length of one period of the first sine wave is 100-127 micrometers, and the amplitude of the first sine wave is 100-120 micrometers.
By adopting the technical scheme, the bionic design is carried out by referring to the shells, and the micro grooves are formed in the surfaces, so that the resistance in the flowing process of liquid can be reduced, and the abrasion is reduced. The micro grooves on the shell surface in nature have the effect of reducing the fluid resistance, and sand dunes in the desert are wavy and have the effect of reducing drag. The liquid is staggered at the top end of the groove when flowing, the existence of the groove prevents the transverse pulsation of the fluid in the groove, the dissipation of energy is reduced, and the turbulent kinetic energy in the turbulent boundary layer is reduced, so that the effect of reducing drag is achieved.
In addition, in one embodiment, the front plate is cut with a second plane to obtain a cross section of the front plate, and an inner surface profile of the cross section of the front plate is a second sine wave, a period of the second sine wave is 100-127 micrometers in length, and an amplitude of the second sine wave is 100-120 micrometers.
In addition, in one embodiment, as shown in FIG. 4, a vertical support column 14 is provided between the upper plate 8 and the lower plate 4 of the box 77. Supporting the upper plate 8 and the lower plate 4.
In addition, in one embodiment, the left plate 6 is cut with the first plane to obtain a cross section of the left plate 6, and an inner surface profile of the cross section of the left plate 6 is a third sine wave, a period of which has a length of 100 to 127 micrometers, and an amplitude of the third sine wave is 100 to 120 micrometers.
In addition, in one embodiment, as shown in fig. 4, the device further comprises a leather bag 26, a supporting plate 27, a leather bag bracket 31, a first sliding block 28, a first rail 29 and a first electric cylinder 30, wherein the inner cavity of the box body 77 is communicated with the inner cavity of the leather bag 26, and the leather bag 26 is positioned outside the box body 77; the leather bag support 31 is fixed on the lower plate 4, the bottom of the leather bag 26 is in contact with the support plate 27, the support plate 27 is fixed on the first sliding block 28, the first sliding block 28 slides on the first track 29 in the vertical direction, the first track 29 is fixed on the leather bag support 31, the support plate 27 is connected with a telescopic rod of the first electric cylinder 30, the other end of the first electric cylinder 30 is connected with the leather bag support 31, and the first electric cylinder 30 is electrically connected with the controller 75. The first electric cylinder 30 drives the supporting plate 27 to move, and changes the volume of the leather bag 26, so that the moment on the left side of the walking beam 64 is changed, and the balance degree of the walking beam 64 is adjusted.
When the oil field load changes to cause the lifting rope 62 to move upwards in the oil extraction process, the supporting plate 27 moves downwards from top to bottom, so that liquid in the box 77 enters the leather bag 26, the moment on the left side of the walking beam 64 is increased, the load of the motor 74 is reduced, and the energy consumption is reduced.
When the oil field load changes to cause the lifting rope 62 to move upwards in the oil extraction process, the supporting plate 27 moves upwards from bottom to top, so that liquid in the leather bag 26 enters the box 77, the moment on the left side of the walking beam 64 is reduced, the load of the motor 74 is lightened, and the energy consumption is reduced.
In one movement cycle of the horsehead 63, when the horsehead 63 moves from the horizontal position to the top dead center, the supporting plate 27 moves from top to bottom, so that the liquid in the box 77 enters the leather bag 26, the moment on the left side of the walking beam 64 is increased, the load of the motor 74 is reduced, and the energy consumption is reduced; when horsehead 63 moves from the top dead center to the horizontal position, support plate 27 moves from the bottom to the top, causing liquid in bladder 26 to enter tank 77, reducing the moment on the left side of walking beam 64, reducing the load on motor 74, and reducing energy consumption.
In addition, in one embodiment, the leather bag 26 is further included, the inner cavity of the box body 77 is communicated with the inner cavity of the leather bag 26, and the leather bag 26 is positioned outside the box body 77; the counterweight bracket 1 is provided with a supporting disk, two radial third tracks are arranged on the supporting disk, a second sliding block is arranged on the third tracks and is in contact with the outer wall of the leather bag 26, the second sliding block is connected with a third screw rod through threads, the third screw rod rotates to enable the second sliding block to slide on the third tracks, and the third screw rod is connected with an output shaft of a fourth motor through a coupling. The volume of the bellows 26 is changed by the second slider movement, thereby changing the moment on the left side of the walking beam 64 and adjusting the balance of the walking beam 64.
In addition, in one embodiment, as shown in fig. 2, the device further includes a second bladder 32, the second bladder 32 is located inside the box 77, the second bladder 32 is filled with nitrogen, an opening of the second bladder 32 is connected with a pipeline, the pipeline passes through a wall surface of the box 77 and then is divided into two paths, one path is connected with the first stop valve 33, the first stop valve 33 is connected with the air source 34, the other path is connected with the second stop valve 35, and the redundant air in the second bladder 32 is discharged through the second stop valve 35. By varying the volume of the second bladder 32, the left moment of the walking beam 64 is varied, changing the balance of the walking beam 64.
When the oil field load changes to cause the lifting rope 62 to move upwards in the oil extraction process, the first stop valve 33 is closed, the second stop valve 35 is opened, and the gas in the second leather bag 32 is discharged, so that the moment on the left side of the walking beam 64 is increased, the load of the motor 74 is reduced, and the energy consumption is reduced.
When the oil field load changes to cause the lifting rope 62 to move upwards in the oil extraction process, the first stop valve 33 is opened, the second stop valve 35 is closed, and the gas in the gas source 34 enters the second leather bag 32, so that the moment on the left side of the walking beam 64 is reduced, the load of the motor 74 is lightened, and the energy consumption is reduced.
In one movement cycle of the horsehead 63, when the horsehead 63 moves from the horizontal position to the top dead center, the first stop valve 33 is closed, the second stop valve 35 is opened, and the gas in the second leather bag 32 is discharged, so that the moment on the left side of the walking beam 64 is increased, the load of the motor 74 is reduced, and the energy consumption is reduced; when horsehead 63 moves from the top dead center to the horizontal position, first stop valve 33 is opened, second stop valve 35 is closed, and gas in gas source 34 enters second bladder 32, so that the moment on the left side of walking beam 64 is reduced, the load of motor 74 is reduced, and the energy consumption is reduced.
In addition, in one embodiment, as shown in fig. 4, a camera 36 is disposed on an inner wall of the case 77, the camera 36 is connected with a controller 75, the controller 75 is connected with a cloud server, and the cloud server is connected with a mobile terminal such as a mobile phone. And observing the abrasion condition of the micro grooves on the surface of the upper plate 8 through the mobile terminal, and maintaining when the abrasion quantity of the micro grooves reaches a set value.
In addition, in one embodiment, as shown in fig. 4, a second spring 37 that stretches horizontally is provided on the right plate 7 of the box 77, the second spring 37 is connected to a push plate 38, and the normal line of the push plate 38 is parallel to the axis of the second spring 37. When the horsehead 63 moves from the horizontal position to the bottom dead center, the liquid compresses the spring under the action of gravity and inertia, and stores elastic potential energy; when horsehead 63 moves from the bottom dead center to the horizontal position, second spring 37 expands, pushing the liquid to transfer from the left end to the right end.
The intelligent oil extraction device with the liquid counterweight provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (5)
1. The intelligent oil extraction device with the liquid counterweight is characterized by comprising a beam-pumping unit, wherein the beam-pumping unit comprises a crank, a connecting rod, a beam, a horsehead, a bracket, a motor, a speed reducer, a controller, wherein the crank, the connecting rod, the beam and the horsehead are sequentially connected, and the beam is connected with the bracket through a rotating shaft;
the walking beam comprises a rotating shaft, a walking beam body, a box body, a counterweight support and a balancing weight, wherein the box body is arranged at one end, far away from the horsehead, of the walking beam, the box body is positioned at the left side of the rotating shaft, the counterweight support is connected with the box body and is positioned at the upper part of the box body, and a first lead screw, a second motor and the balancing weight which is locked on the first lead screw and can move along the length direction of the walking beam are arranged on the counterweight support along the length direction of the walking beam; the controller controls the movement of the second motor, and the box body is sealed with liquid; setting a plane of a normal line along the front-rear direction as a first plane, and cutting an upper plate of the box body by using the first plane to obtain a cross section of the upper plate, wherein the profile of the inner surface of the cross section of the upper plate is a sinusoidal wave line; the leather bag box further comprises a leather bag and a leather bag adjusting mechanism, wherein the leather bag and the leather bag adjusting mechanism are positioned outside the box body, and the inner cavity of the box body is communicated with the inner cavity of the leather bag.
2. The intelligent oil extraction device with the liquid counterweight according to claim 1, wherein the leather bag adjusting mechanism comprises a supporting plate, a leather bag support, a first sliding block, a first track and a first electric cylinder, the leather bag support is fixed on a lower plate of the box body, the bottom of the leather bag is in contact with the supporting plate, the supporting plate is fixed on the first sliding block, the first sliding block slides on the first track in the vertical direction, the first track is fixed on the leather bag support, the supporting plate is connected with a telescopic rod of the first electric cylinder, the other end of the first electric cylinder is connected with the leather bag support, and the first electric cylinder is electrically connected with the controller.
3. The intelligent oil extraction device with the liquid counterweight according to claim 2, wherein the plane of the normal line along the up-down direction is set as a second plane, the cross section of the front plate of the box body is obtained by cutting the front plate with the second plane, and the contour of the inner surface of the cross section of the front plate is a sinusoidal wave line.
4. A smart oil recovery apparatus with liquid weights as claimed in claim 3, wherein a support column is provided between the upper and lower plates of the tank.
5. The intelligent oil recovery apparatus with liquid weight according to claim 4, wherein the left plate of the tank is cut with a first plane to obtain a cross section of the left plate, and an inner surface profile of the cross section of the left plate is a sinusoidal wave line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311475887.5A CN117211738B (en) | 2023-11-08 | 2023-11-08 | Wisdom oil production device with liquid counter weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311475887.5A CN117211738B (en) | 2023-11-08 | 2023-11-08 | Wisdom oil production device with liquid counter weight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117211738A true CN117211738A (en) | 2023-12-12 |
| CN117211738B CN117211738B (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311475887.5A Active CN117211738B (en) | 2023-11-08 | 2023-11-08 | Wisdom oil production device with liquid counter weight |
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| Country | Link |
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| CN (1) | CN117211738B (en) |
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| CN209875125U (en) * | 2018-12-25 | 2019-12-31 | 长江大学 | Balance adjustment oil pumping unit |
| CN111980894A (en) * | 2019-05-24 | 2020-11-24 | 中国石油天然气股份有限公司 | Balance adjusting device and beam-pumping unit with same |
| CN216691057U (en) * | 2022-01-20 | 2022-06-07 | 北京中天富源节能科技有限公司 | Oil pumping machine posture regulating and controlling equipment |
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| CN117211738B (en) | 2024-01-23 |
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