CN101182761A - Pumping unit with pole - Google Patents

Pumping unit with pole Download PDF

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Publication number
CN101182761A
CN101182761A CNA2007100931516A CN200710093151A CN101182761A CN 101182761 A CN101182761 A CN 101182761A CN A2007100931516 A CNA2007100931516 A CN A2007100931516A CN 200710093151 A CN200710093151 A CN 200710093151A CN 101182761 A CN101182761 A CN 101182761A
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CN
China
Prior art keywords
counterweight
pulley
well
wire rope
oil
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2007100931516A
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Chinese (zh)
Inventor
黄新武
任连城
周秋沙
魏昌祥
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Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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Publication date
Application filed by Chongqing University of Science and Technology filed Critical Chongqing University of Science and Technology
Priority to CNA2007100931516A priority Critical patent/CN101182761A/en
Publication of CN101182761A publication Critical patent/CN101182761A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to an oil pumping device with a pumping rod, including a motor (15), a reducer (17) connected with the motor, an underground oil pumping mechanism and an electric control cabinet (11). The present invention is characterized in that a roller lifting mechanism is added and connected between the reducer (17) and the underground oil pumping mechanism; the roller lifting mechanism includes a double-roller winch (10), an oil-pumping end steel rope (7), a counterweight end steel rope (7-1), a pulley bracket (9), a well mouth pulley (8), a bend pulley (12), a counterweight movable pulley (13), a counterweight (14) and a counterweight well (24). The oil pumping device with a pumping rod provided by the present invention, particularly suitable for a deep oil well, a dense oil well and a high wax content oil well, has the advantages of simple and reasonable structure, long stroke distance, convenient regulation, reliable operation and long service life, thus greatly decreasing the production cost and the material consumption and increasing the yield of crude oil when reducing the energy consumption.

Description

A kind of sucker rod pumping device
Technical field
The present invention relates to a kind of sucker rod pumping device, relate in particular to a kind of sucker rod pumping device that is suitable for dark oil well, heavy oil wells, the oil recovery of high waxy oil well.
Background technology
The existing crude oil production well of China reaches more than 70,000 mouthful, produces the later stage because each trunk oil field mostly enters, and the pressure of formation oil reduces, and most oil wells are mainly by mechanical oil production model production.Recover the oil based on the sucker rod pumping device again in mechanical oil recovery, China reaches more than 90% according to statistics.The overwhelming majority of each elephant use of China at present is the sucker rod pumping device of beam type, this oil rig mainly comprises the mechanical elevating mechanism on ground and the oil pumping mechanism in the oil well, and wherein the mechanical elevating mechanism on ground comprises: motor, reducer, quadric chain, walking beam, horse head, flexible connecting member etc.; Oil pumping mechanism in the oil well comprises: the rod string of being made up of the rigidity sucker rod that is threaded, oil well pump piston, oil well pump pump barrel, oil pipe, well head threeway, well mouth sealing device etc.One end of flexible connecting member is fixed on an end of walking beam, it is walked around horse head and is connected with the upper end of rod string, when the horse head that drives the other end of walking beam when quadric chain carries out continuous upper and lower swing, flexible connecting member then drives the upper and lower reciprocating motion in the pump barrel of oil well pump of oil well pump piston by sucker rod, utilizes the alternately open and close of the one-way cock on oil pump piston and the pump barrel that oil is extracted out; The distance of the upper and lower motion of oil pump piston, promptly Chou You effective stroke has different requirements to different oil wells, and it will directly influence the effect and the crude output of oil pumping.
In the production of reality was used, the shortcoming that beam type sucker rod pumping device exists is: 1, volume weight was big, and long more this problem of stroke is outstanding more, to such an extent as to be difficult to further improve its stroke; Along with the increase gradually, particularly viscous crude of oil well depth, the quantity of high waxy oil well are on the increase, for guaranteeing crude output, the longer the better to require the oil pumper stroke from technology.China can reach more than 6 meters based on the ultra-long-stroke of the stroke beam pumping unit of quadric chain at present, and its volume, weight and manufacturing cost are quite big, increase length of stroke again, has been very difficult.And this one-stroke for deep-well, ultradeep well, heavy oil wells, high waxy oil well, has seemed much of that far from, is difficult to adapt to the needs of field produces.2, motor load is inhomogeneous in the stroke of upper and lower motion, and the load of motor is very high when promptly moving upward, and the load of motor is then relatively low when moving downward, or even negative value load, thereby causes the waste of energy.People have taked multiple balance mode for this reason, as beam balance, crank balance, plural equilibrium, air pressure balance etc., make moderate progress in the load distribution to oil pumper in various degree, but because therefore it can not fundamentally solve the problem of oil pumper power division inequality not from changing the quadric chain of beam pumping unit in essence.3, employing is passed to the down-hole with the sucker rod of the rigidity that is threaded with ground power one by one, and therefore, the operation easier of transfer installation at the down-hole pumping unit, taking out when keeping in repair is very big, and the activity duration is long, the cost height, and the dropout accident takes place easily.4, the stroke of beam pumping unit, strokes per minute can only have level to regulate, and can not in time adapt to the variation of oil well technological parameter, have limited its scope of application greatly.
Summary of the invention
The object of the present invention is to provide a kind of simple and reasonable, stroke distance and easy to adjust, energy consumption is low, crude output is high is particularly suitable for the sucker rod pumping device that dark oil well, heavy oil wells, high waxy oil well recover the oil.
The object of the present invention is achieved like this: a kind of sucker rod pumping device, comprise the reducer that is connected with motor, oil pumping mechanism in the well, and electrical control cubicles is characterized in that: described reducer is set up the cylinder elevating mechanism that is connected both with interior oil pumping of described well between the mechanism.
Above-mentioned cylinder elevating mechanism can comprise double-drum winch, oil pumping end wire rope, counterweight end wire rope, pulley support, well head pulley, changed course pulley, counterweight movable pulley, counterweight and counterweight well; Wherein, the fixedly connected production cylinder of one end of described oil pumping end wire rope and the side on the drum shaft of described double-drum winch is connected, and the counterweight cylinder that is connected through clutch on an end of described counterweight end wire rope and the described drum shaft connects, and described oil pumping end wire rope is opposite with the direction of described counterweight end wire rope winding; Fixedly connected with described well head pulley in the top of described pulley support, the ground near producing well is fixed in its underpart; The other end of described oil pumping end wire rope is walked around described well head pulley, is connected with oil pumping mechanism in the described well; Described counterweight well location is in below ground, and described counterweight is positioned at described counterweight well, and its top is connected with described counterweight movable pulley; Described changed course pulley is fixed in the ground near described counterweight well well head; The other end of described counterweight end wire rope is walked around described changed course pulley and described counterweight movable pulley, and its end is fixed on the top and the relative position of described changed course pulley of described counterweight well, can adopt conventional dead line anchor to fix; The fixedly connected big belt wheel in the described drum shaft end of described double-drum winch is connected through the fixedly connected small pulley of driving-belt and described reducer output.In addition, also can set up fixed block in the position relative, the top of above-mentioned counterweight well with described changed course pulley, set up fixedly connected again on the top of described counterweight and with the parallel movable pulley of described counterweight movable pulley; The other end of counterweight end wire rope can be walked around described changed course pulley, described counterweight movable pulley, described fixed block, described movable pulley successively, and its end is fixed on the top of described counterweight well and the position of described changed course pulley the same side.This kind cylinder elevating mechanism is applicable to that usually stroke is long, the heavier occasion of required counterweight.
Above-mentioned cylinder elevating mechanism also can comprise double-drum winch, oil pumping end wire rope, counterweight end wire rope, pulley support, well head pulley, changed course pulley, counterweight bearing support, counterweight bearing support fixed pulley and counterweight; Wherein, the fixedly connected production cylinder of one end of described oil pumping end wire rope and the side on the drum shaft of described double-drum winch is connected, and the counterweight cylinder that is connected through clutch on an end of described counterweight end wire rope and the described drum shaft connects, and described oil pumping end wire rope is opposite with the direction of described counterweight end wire rope winding; Fixedly connected with described well head pulley in the top of described pulley support, the ground near producing well is fixed in its underpart; The other end of described oil pumping end wire rope is walked around described well head pulley, is connected with oil pumping mechanism in the described well; Described counterweight bearing support is positioned at more than the ground, described counterweight bearing support fixed pulley is fixedly connected on the both sides at the top of described counterweight bearing support, described counterweight is positioned at described counterweight bearing support one side, and described changed course pulley is fixed in the ground near the opposite side of described counterweight bearing support; The other end of described counterweight end wire rope is walked around described changed course pulley and is walked around described counterweight bearing support fixed pulley, fixedlys connected with the top of described counterweight in its end; The fixedly connected big belt wheel in the described drum shaft end of described double-drum winch is connected through the fixedly connected small pulley of driving-belt and described reducer output.This kind cylinder elevating mechanism is applicable to the lighter situation of not oversize, the required counterweight of stroke usually.
Can pressure sensor be set at the bearing place of above-mentioned well head pulley, rotating speed, tachometer generator are set on the drum shaft of described double-drum winch; Described pressure sensor, described rotating speed, tachometer generator are connected with described electrical control cubicles through cable; Small pulley place at described reducer output is provided with braking mechanism, and described braking mechanism is connected with described electrical control cubicles through cable; Described motor is a variable-frequency motor; Above-mentioned pressure sensor, rotating speed, tachometer generator, braking mechanism, variable-frequency motor are conventional products, and control circuit in the electrical control cubicles and electronic devices and components also are conventional circuit and components and parts.
The diameter of above-mentioned production cylinder and described counterweight cylinder can be identical or inequality.
The other end of above-mentioned oil pumping end wire rope is walked around described well head pulley, is connected with the upper end of the rod string that elevates above the soil of oil pumping mechanism in the described well.This kind syndeton is applicable to the situation that stroke is not oversize usually.
The other end of above-mentioned oil pumping end wire rope is walked around described well head pulley, can also fixedly connected with the top of the weighted lever of setting up in its end, fixedlys connected with the top of the oil well pump piston of the interior oil pumping of described well mechanism in the bottom of described weighted lever; The effect of weighted lever is to guarantee that the oil well pump piston can be reliably descending.This kind syndeton is applicable to the situation that stroke is long usually.
Sucker rod pumping device provided by the invention has thoroughly been abandoned the quadric chain that beam pumping unit relies on, adopt the mode of wheel shaft equalising torque to substitute the balance method of the routine that quadric chain adopts simultaneously, move with the reciprocating rotating of twin-roll and to realize pumping of oil well pump piston, can realize the ultra-long-stroke oil pumping with very little ground installation, the stroke range of this sucker rod pumping device can be set in 10~30m according to the actual demand of production well, even longer; Increasing being provided with of movable pulley, fixed pulley group can also be when increasing the oil pumping stroke, the degree of depth of not too large increase counterweight well; The gross weight of counterweight is decided according to diameter, the counterweight pulley number of the degree of depth, production cylinder and the counterweight cylinder of pumpingh well, the moment of torsion that counterweight produces on drum shaft is opposite with the torque equidirectional that fixed load in the oil well produces on drum shaft, when the oil well pump piston moves upward lifting crude oil, counterweight moves downward, help motor to promote crude oil, significantly reduced the load of motor in this stroke; When the oil well pump descent of piston, just in time be the up process of counterweight, the deadweight of moving component is not enough to promote counterweight in the well, and motor provides portion of energy to help to promote counterweight, and the form of these energy with the gravitional force of counterweight stored; With twin-roll and the combination of counterweight assembly pulley, make that the load of motor is equal substantially in the oil well pump up-down stroke, the gravity of down-hole moving component is saved in the counterweight in the form of descending process institute work with potential energy, and be back to use the oil well pump that promotes in the oil well, in the former wet goods load, reduced the load of motor in lifting process, the useful work power of motor is improved greatly, just realize motor, the counter-rotating load is equal substantially, reduced motor, reduction box, the load fluctuation of cylinder and drum shaft, improve their life-span, also reduced the fluctuation of load of electrical network simultaneously; In the working cycles of whole oil pumping, select suitable counterweight, can make the load of motor forward and backward reach identical; And by at the diameter of counterweight cylinder, produce on the diameter of cylinder, the parameters such as gross weight of assembly pulley quantity, counterweight on the counterweight and adjust, can produce some variations, to adapt to the oil pumping needs of different oil wells.In electrical control cubicles, adopt conventional electronic devices and components and control circuit to control variable-frequency motor, can realize the stroke and the strokes per minute of step-less adjustment oil pumper by the relevant parameter that changes control program according to the actual conditions of oil well; And can pass through well head pulley pressure, pulley revolution and other parameters that pressure sensor, rotating speed, tachometer generator detect, and control rotating speed of motor automatically, turn to, can also timely judgement down-hole accident, the realization control that stops, starts shooting.Use flexible wire ropes to replace conventional sucker rod, simplified the down-hole pumping unit, significantly reduced activity duration and cost, and reduced the generation of dropout accident transferring installation, taking out the operation easier when keeping in repair.
In sum, the sucker rod pumping apparatus structure advantages of simple that is particularly suitable for dark oil well, heavy oil wells, the oil recovery of high waxy oil well provided by the invention, stroke is long and easy to adjust, reliable, the life-span is long, greatly reduce manufacturing cost and material consumption, can under situation about cutting down the consumption of energy greatly, improve crude output.
Description of drawings
The present invention is further illustrated below in conjunction with drawings and Examples.
Fig. 1 is the side structure schematic diagram of embodiments of the invention 1;
Fig. 2 is the structural representation that double-drum winch is connected with motor, reducer among Fig. 1;
Fig. 3 is the structural representation of pressure sensor installation site in the embodiments of the invention 1;
Fig. 4 is the plan structure schematic diagram of counterweight Jing Chu among Fig. 1;
Fig. 5 is the side structure schematic diagram of embodiments of the invention 2.
The specific embodiment
Embodiment 1: referring to Fig. 1~Fig. 4, a kind of sucker rod pumping device comprises the reducer 17 that is connected with motor 15 through shaft coupling 16, oil pumping mechanism in the well, and electrical control cubicles 11, it is characterized in that: described reducer 17 is set up the cylinder elevating mechanism that is connected both with interior oil pumping of described well between the mechanism.
Described cylinder elevating mechanism comprises double-drum winch 10, oil pumping end wire rope 7, counterweight end wire rope 7-1, pulley support 9, well head pulley 8, changed course pulley 12, counterweight movable pulley 13, movable pulley (13-1), counterweight 14 and counterweight well 24; Wherein, the fixedly connected production cylinder 21 of one end of described oil pumping end wire rope 7 and the side on the drum shaft 23 of described double-drum winch 10 is connected, and the counterweight cylinder 22 that is connected through clutch 28 on the end of described counterweight end wire rope 7-1 and the described drum shaft 23 connects, and described oil pumping end wire rope 7 is opposite with the direction of described counterweight end wire rope 7-1 winding; Fixedly connected with two described well head pulleys 8 by bolt in upper end at described pulley support 9, the ground near producing well is fixed in its underpart; The other end of described oil pumping end wire rope 7 is walked around two described well head pulleys 8, fixedlys connected with the top of the weighted lever of setting up 26 in its end, fixedlys connected with the top of the oil well pump piston 3 of the interior oil pumping of described well mechanism in the bottom of described weighted lever 26; Described counterweight well 24 locates below ground level; Described counterweight 14 is positioned at described counterweight well 24, and its top is connected through the bearing of bolt with described counterweight movable pulley 13 that is parallel to each other and described movable pulley 13-1; Described changed course pulley 12 is fixed in the ground near described counterweight well 24 well heads, in the top of described counterweight well 24 and described changed course pulley 12 relative positions fixed pulley 12-1 is set; The other end of described counterweight end wire rope 7-1 is walked around described changed course pulley 12, described counterweight movable pulley 13, described fixed pulley 12-1, described movable pulley 13-1 successively, and its end is fixed on the top of described counterweight well 24 and the position of described changed course pulley 12 the same sides; The big belt wheel 20 that the described drum shaft 23 end keys of described double-drum winch 10 connect connects through the small pulley 19 that driving-belt 19-1 is connected with described reducer 17 output keys.
Bearing place at a described well head pulley 8 is provided with pressure sensor 8-1, and rotating speed, tachometer generator 27 are set on the described drum shaft 23 of described double-drum winch 10; Described pressure sensor 8-1, described rotating speed, tachometer generator 27 are connected with described electrical control cubicles 11 through cable; Small pulley 19 places at described reducer 17 outputs are provided with braking mechanism 18, and described braking mechanism 18 is connected with described electrical control cubicles 11 through cable; Described motor 15 is a variable-frequency motor.
In the present embodiment, the diameter of described production cylinder 21 is less than the diameter of described counterweight cylinder 22; Above-mentioned pressure sensor 8-1, rotating speed, tachometer generator 27, braking mechanism 18, variable-frequency motor 15 are conventional products, and control circuit in the electrical control cubicles 11 and electronic devices and components also are conventional circuit and components and parts; Oil pumping mechanism comprises well mouth sealing device 6 in the described well, the oil pipe 4 of fixedlying connected with well mouth sealing device 6 bottoms, the well head threeway 5 of the well head top that is positioned at production string 25 on the oil pipe 4, the oil well pump pump barrel 2 that oil pipe 4 lower ends connect, oil well pump piston 3 in standing valve 1 that oil well pump pump barrel 2 lower ends connect and the oil well pump pump barrel 2 is conventional equipment.
Embodiment 2: referring to Fig. 5, and a kind of sucker rod pumping device, present embodiment and embodiment 1 are except that following structure different, and other structure is all identical:
1, the counterweight well is not set and counterweight bearing support 29 is set, described counterweight bearing support 29 is positioned at more than the ground, both sides at the top of described counterweight bearing support (29) connect counterweight bearing support fixed pulley 29-1 through bolt, described counterweight 14 is positioned at described counterweight bearing support 29 1 sides, and described changed course pulley 12 is fixed in the ground near the opposite side of described counterweight bearing support (29); The other end of described counterweight end wire rope 7-1 is walked around described changed course pulley 12 and described counterweight bearing support fixed pulley 29-1, and its end is connected with the top of described counterweight 14.
2, the diameter of described production cylinder 21 is identical with the diameter of described counterweight cylinder 22;
3, the other end of described oil pumping end wire rope 7 is walked around described well head pulley 8, is connected with the upper end of the rod string 3-1 that elevates above the soil of oil pumping mechanism in the described well.

Claims (8)

1. a sucker rod pumping device comprises the reducer (17) that is connected with motor (15), and oil pumping mechanism in the well, and electrical control cubicles (11) is characterized in that: described reducer (17) is set up the cylinder elevating mechanism that is connected both with interior oil pumping of described well between the mechanism.
2. sucker rod pumping device as claimed in claim 1 is characterized in that: described cylinder elevating mechanism comprises double-drum winch (10), oil pumping end wire rope (7), counterweight end wire rope (7-1), pulley support (9), well head pulley (8), changed course pulley (12), counterweight movable pulley (13), counterweight (14) and counterweight well (24); Wherein, the fixedly connected production cylinder (21) of a side on the drum shaft (23) of one end of described oil pumping end wire rope (7) and described double-drum winch (10) is connected, and the counterweight cylinder (22) that is connected through clutch (28) on an end of described counterweight end wire rope (7-1) and the described drum shaft (23) connects, and described oil pumping end wire rope (7) is opposite with the direction of described counterweight end wire rope (7-1) winding; Fixedly connected with described well head pulley (8) in the top of described pulley support (9), the ground near producing well is fixed in its underpart; The other end of described oil pumping end wire rope (7) is walked around described well head pulley (8) and is connected with oil pumping mechanism in the described well; Described counterweight well (24) locates below ground level, and described counterweight (14) is positioned at described counterweight well (24), fixedlys connected with described counterweight movable pulley (13) in its top; Described changed course pulley (12) is fixed in the ground near described counterweight well (24) well head; The other end of described counterweight end wire rope (7-1) is by described changed course pulley (12) and described counterweight movable pulley (13), and its end is fixed on the top and the relative position of described changed course pulley (12) of described counterweight well (24); The fixedly connected big belt wheel (20) in described drum shaft (23) end of described double-drum winch (10) is connected through the fixedly connected small pulley (19) of driving-belt (19-1) and described reducer (17) output.
3. sucker rod pumping device as claimed in claim 1 is characterized in that: described cylinder elevating mechanism comprises double-drum winch (10), oil pumping end wire rope (7), counterweight end wire rope (7-1), pulley support (9), well head pulley (8), changed course pulley (12), counterweight bearing support (29), counterweight bearing support fixed pulley (29-1) and counterweight (14); Wherein, the fixedly connected production cylinder (21) of a side on the drum shaft (23) of one end of described oil pumping end wire rope (7) and described double-drum winch (10) is connected, and the counterweight cylinder (22) that is connected through clutch (28) on an end of described counterweight end wire rope (7-1) and the described drum shaft (23) connects, and described oil pumping end wire rope (7) is opposite with the direction of described counterweight end wire rope (7-1) winding; Fixedly connected with described well head pulley (8) in the top of described pulley support (9), the ground near producing well is fixed in its underpart; The other end of described oil pumping end wire rope (7) is walked around described well head pulley (8), and its end is connected with oil pumping mechanism in the described well; Described counterweight bearing support (29) is positioned at more than the ground, described counterweight bearing support fixed pulley (29-1) is fixedly connected on the both sides at described counterweight bearing support (29) top, described counterweight (14) is positioned at described counterweight bearing support (29) one sides, and described changed course pulley (12) is fixed in the ground near the opposite side of described counterweight bearing support (29); The other end of described counterweight end wire rope (7-1) is by described changed course pulley (12) and walk around described counterweight bearing support fixed pulley (29-1), fixedlys connected with the top of described counterweight (14) in its end; The fixedly connected big belt wheel (20) in described drum shaft (23) end of described double-drum winch (10) is connected through the fixedly connected small pulley (19) of driving-belt (19-1) and described reducer (17) output.
4. as claim 2 or 3 described sucker rod pumping devices, it is characterized in that: at the bearing place of described well head pulley (8) pressure sensor (8-1) is set, rotating speed, tachometer generator (27) are set on the drum shaft (23) of described double-drum winch (10); Described pressure sensor (8-1), described rotating speed, tachometer generator (27) are connected with described electrical control cubicles (11) through cable; Described small pulley (19) at described reducer (17) output locates to be provided with braking mechanism (18), and described braking mechanism (18) is connected with described electrical control cubicles (11) through cable; Described motor (15) is a variable-frequency motor; Described production cylinder (21) is identical or inequality with the diameter of described counterweight cylinder (22).
5. sucker rod pumping device as claimed in claim 2, it is characterized in that: set up fixed pulley (12-1) in the position that the top of described counterweight well (24) is relative with described changed course pulley (12), set up fixedly connected and parallel with described counterweight movable pulley (13) movable pulley (13-1) on the top of described counterweight (14); The other end of counterweight end wire rope (7-1) is successively by described changed course pulley (12), described counterweight movable pulley (13), described fixed pulley (12-1), described movable pulley (13-1), and its end is fixed on the top of described counterweight well (24) and the position of described changed course pulley (12) the same side.
6. sucker rod pumping device as claimed in claim 4 is characterized in that: the other end of described oil pumping end wire rope (7) is walked around described well head pulley (8), fixedlys connected with the upper end of the rod string that elevates above the soil (3-1) of oil pumping mechanism in the described well.
7. sucker rod pumping device as claimed in claim 4, it is characterized in that: the other end of described oil pumping end wire rope (7) is walked around described well head pulley (8), fixedlying connected with the top of the weighted lever of setting up (26) in its end, fixedlys connected with the top of the oil well pump piston (3) of the interior oil pumping of described well mechanism in the bottom of described weighted lever (26).
8. sucker rod pumping device as claimed in claim 5 is characterized in that: at the bearing place of described well head pulley (8) pressure sensor (8-1) is set, rotating speed, tachometer generator (27) are set on the drum shaft (23) of described double-drum winch (10); Described pressure sensor (8-1), described rotating speed, tachometer generator (27) are connected with described electrical control cubicles (11) through cable; Described small pulley (19) at described reducer (17) output locates to be provided with braking mechanism (18), and described braking mechanism (18) is connected with described electrical control cubicles (11) through cable; Described motor (15) is a variable-frequency motor; Described production cylinder (21) is identical or inequality with the diameter of described counterweight cylinder (22); The other end of described oil pumping end wire rope (7) is walked around described well head pulley (8), fixedlying connected with the top of the weighted lever of setting up (26) in its end, fixedlys connected with the top of the oil well pump piston (3) of the interior oil pumping of described well mechanism in the bottom of described weighted lever (26).
CNA2007100931516A 2007-12-17 2007-12-17 Pumping unit with pole Pending CN101182761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562974A (en) * 2012-02-22 2012-07-11 重庆科技学院 Electromechanical commutator for oil pumping unit
CN103696758A (en) * 2013-12-24 2014-04-02 中国电子科技集团公司第二十二研究所 Winch, drifting device and logging depth measuring method
CN104763380A (en) * 2014-01-08 2015-07-08 刘玉玺 Multi-pulley secondary energy storage device of pumping unit
CN113153226A (en) * 2021-04-01 2021-07-23 中油智采(天津)科技有限公司 Stroke adjusting device of single-machine multi-well pumping unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562974A (en) * 2012-02-22 2012-07-11 重庆科技学院 Electromechanical commutator for oil pumping unit
CN103696758A (en) * 2013-12-24 2014-04-02 中国电子科技集团公司第二十二研究所 Winch, drifting device and logging depth measuring method
CN104763380A (en) * 2014-01-08 2015-07-08 刘玉玺 Multi-pulley secondary energy storage device of pumping unit
CN113153226A (en) * 2021-04-01 2021-07-23 中油智采(天津)科技有限公司 Stroke adjusting device of single-machine multi-well pumping unit

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