CN101936147A - Multifunctional double-acting hydraulic oil producing device - Google Patents
Multifunctional double-acting hydraulic oil producing device Download PDFInfo
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- CN101936147A CN101936147A CN2009100123509A CN200910012350A CN101936147A CN 101936147 A CN101936147 A CN 101936147A CN 2009100123509 A CN2009100123509 A CN 2009100123509A CN 200910012350 A CN200910012350 A CN 200910012350A CN 101936147 A CN101936147 A CN 101936147A
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Abstract
The invention relates to a multifunctional double-acting hydraulic oil producing device which is characterized in that a two-way oil-well pump is placed in an oil well running casing, a long plunger piston is arranged in the two-way oil-well pump, a hollow draw rod is arranged on the long plunger piston, and pistons and hydraulic cylinders are arranged in the hollow draw bar; a two-way oil-well pump barrel is arranged between every two hydraulic cylinders, a traveling oil outlet valve is arranged on the hollow draw rod, and fixed oil inlet valves are arranged on sealing end covers; the hydraulic cylinders are connected with the two-way oil-well pump barrels through the sealing end covers, the pump barrels are connected with the hydraulic cylinders through the sealing end covers, the fixed oil inlet valves are arranged on the sealing end covers, and the long plunger piston and the pistons are connected through the hollow draw rod; and the travelling oil outlet valve is arranged on the hollow draw rod, a packer is connected with an overflow valve, the overflow valve is connected with a bayonet socket, the bayonet socket is connected with an oil tube until being connected with a well port. The hydraulic cylinders are used as driving force to drive the two-way pump plunger piston to synchronously move, and two-way oil inlet and outlet during up and down strokes are actually achieved. The invention has the characteristics of no eccentric wear between the oil pumping rod and the oil tube, energy saving and high production efficiency.
Description
Technical field
The present invention relates to the oil production equipment that a kind of oil field is used, relate to particularly that a kind of pump plunger can two-wayly when upper and lower stroke be finished into, the multi-functional double acting hydraulic oil producing device of oil extraction, be to having the improvement of the intelligent hydraulic pumping unit structure of using in the oil field now, belonging to the E21B43/00 technical field in the International Patent Classification (IPC).
Background technology
At present, in the oil exploitation both domestic and external, most mechanical oil production technology equipment that adopt: down eccentric barbell type walking beam compound balanced pumping unit, pendulum thick stick formula oil pumper, the oil pumper of various form of structure such as prosperous space long stroke pumping unit and electric submersible pump.When recovering the oil, need sand control, will heat (steam injection, electrical heating etc.) for heavy oil wells and guarantee ordinary production for containing the many oil wells of sand, special because hole deviation causes the eccentric wear between sucker rod and oil pipe, increased maintenance cost and cost of production greatly.Major part all is the oil production technology of unidirectional oil pumping in addition, has limited the raising of production efficiency.
For this reason, the inventor once provided a kind of " intelligent hydraulic pumping unit " in publication number is the patent of invention of CN1584284, this intelligent hydraulic pumping unit, form by the hydraulic power unit that is complementary with it, it is characterized in that being provided with in the pump barrel hollow rod, on hollow rod, be provided with a hydraulic cylinder at least, be provided with plunger in the middle, position up and down at plunger is respectively equipped with the one way valve that moves about, bottom at hollow rod is provided with one way valve, be respectively equipped with fixedly one way valve on pump barrel, hydraulic cylinder is connected with hydraulic power unit by the hydraulic system high-pressure pipeline.
But the intelligent hydraulic pumping unit of this structure still exists following problem:
1. because the double acting hydraulic oil producing pump that adopts is to take out crude oil, the upper and lower chamber of double acting hydraulic oil producing pump is long-pending husky, causes the wearing and tearing between plunger and pump barrel more serious, often causes holddown, influences the raising of operating efficiency;
2. because the double acting hydraulic oil producing pump that adopts when up-down stroke stops commutation, always stops into oil extraction process for some time, all be again starting under load simultaneously, this stationarity to hydraulic system has certain influence.
Summary of the invention
One object of the present invention is to solve the long-pending sand in upper and lower chamber of existing double acting hydraulic oil producing pump, causes the wearing and tearing between plunger and pump barrel more serious, often causes holddown, influences the technical problem of operating efficiency; Another object of the present invention is to solve existing double acting hydraulic oil producing pump when up-down stroke stops commutation, always stops into oil extraction process for some time, all be starting under load again simultaneously, thereby the stationarity that influences hydraulic system gets technical problem.
The inventor provides a kind of new multi-functional double acting hydraulic oil producing device by being the further improvement of the patent of invention technology of CN1584284 to publication number.This multi-functional double acting hydraulic oil producing device that the present invention provides is formed with corresponding Hydraulic Station coupling, can provide a kind of is driving force with the hydraulic cylinder, driving the two-way pump plunger is synchronized with the movement, and can be when upper and lower stroke two-way simultaneous advance, oil extraction, have simple in structure, easy to operate, exempted eccentric wear between sucker rod and oil pipe, the energy-conservation and characteristics of enhancing productivity.
The technical scheme that the present invention provides is: this multi-functional double acting hydraulic oil producing device, include Hydraulic Station, pump barrel, hollow rod, hydraulic cylinder and plunger, and be characterized in
Described two-way oil pumping pump barrel 18 places the sleeve pipe 38 under the oil well, be provided with long-plunger 20 in the two-way oil pumping pump barrel 18, on long-plunger 20, be provided with hollow draw-bar 15 and 25, on hollow draw-bar 15, be provided with piston 14, on hollow draw-bar 25, be provided with piston 26, piston 14 and 26 is located at respectively on hydraulic cylinder 13 and 27, two-way oil pumping pump barrel 18 is located between hydraulic cylinder 13 and 27, the delivery valve 19 and 21 that moves about is located at respectively on hollow draw-bar 15 and 25, below end cover 16 and 24 and above be respectively equipped with fixedly inlet valve 17 and 23, hydraulic cylinder 13 and 27 respectively by end cover 16 and 24 and two-way oil pumping pump barrel 18 link together, pump barrel 6 and 33 respectively by end cover 12 and 29 and hydraulic cylinder 13 and 27 link together, on end cover 12 and 29, the below is respectively equipped with fixedly inlet valve 11 and 30, long-plunger 8 and piston 14 link together by hollow draw-bar 10, piston 26 and long-plunger 32 link together by hollow draw-bar 28, the delivery valve 9 and 31 that moves about be located at respectively hollow draw-bar 10 and 28 on, lower end, the top of pump barrel 6 is connected with packer 5, the top of packer 5 is connected with overflow valve 4, the top of overflow valve 4 is connected with plug socket 3, plug socket 3 is connected with oil pipe 2, until being connected to well head.
Have connection-peg and center oil pipe 1 and put to the down-hole gradually, in the seat that connection-peg enters plug socket seals from well head.The port that can reach the port of center oil pipe 1 on the well head annular space that is formed by center oil pipe 1 and oil pipe 2 suits this moment is connected with two oil inlet and outlets of Hydraulic Station 35 respectively.
Be connected that hydraulic cylinder 13 and 27 advances, the petroleum pipeline 7 and 22 on the oil return opening is by packer 5, overflow valve 4 is connected with the lower interface of plug socket 3 respectively, thereby makes the oil extraction pump operation form the hydraulic system of a sealing.
Purpose to better implement the present invention, realize that double acting hydraulic oil producing pump is last, the purpose that the down stroke overall process all can be recovered the oil, described pump barrel 33 also with by screw pump 40, in line check valve 41, fuel-displaced one way valve 42, hydraulic motor 43 is connected with the screw pump device that in line check valve 44 is formed, wherein the oil inlet and outlet of hydraulic motor 43 is connected with 22 with petroleum pipeline 7 respectively, hydraulic motor 43 is under the effect of power fluid, the main shaft output torque drives screw pump 40 work, at this moment, crude oil just can advance from the in line check valve 41 of screw pump 40, flow into the cavity of resorption of pump barrel 33 from fuel-displaced one way valve 39, thereby finish the into process of crude oil, the high voltage power liquid that is entered into hydraulic motor 43 by petroleum pipeline 7 and 22 turns back to Hydraulic Station 35 from fuel-displaced one way valve 42 through petroleum pipeline 22 and 7 respectively.
Operating principle of the present invention:
The long-plunger 20 of double acting hydraulic oil producing pump barrel constitute in pump barrel 18 two is working chamber independently, with two hydraulic cylinders 13 on hollow draw-bar 15 and 25 and 27 is power, drive the plunger 20 upper and lower motions of double acting hydraulic oil producing pump barrel synchronously, also drive simultaneously long-plunger 8 and 32 upper and lower motions in pump barrel 6 and 33, when upper and lower stroke, finish respectively in upper and lower chamber, oil extraction, recovers the oil continuously thereby reach omnidistance.Since the present invention in the length of the plunger described in the technique scheme all greater than the length of pump barrel, be long-plunger and short pump barrel coupling, the length that has changed plunger of the prior art is all less than the structure of the length of pump barrel, it is long-pending husky to make that double acting hydraulic oil producing pump upper and lower chamber when upper and lower stroke is difficult for, fine sand can enter hollow draw-bar from the delivery valve that moves about with crude oil and discharge, not only alleviated the wearing and tearing between plunger and pump barrel, also solved holddown and influenced the problem of operating efficiency.
The present invention's NM structure in technique scheme is same as the prior art, is that the patent of invention technology contents of CN1584284 is identical with publication number of the prior art particularly.
Compared with prior art, the invention has the beneficial effects as follows:
1, the present invention has designed the power fluid automatic heating device in hydraulic system, for the exploitation of viscous crude provides new technology;
2, the present invention adopts double hydraulic cylinder to drive oil well pump, and plunger is subjected to the push-and-pull action of hollow draw-bar simultaneously when upper and lower stroke, and stress balance is stable, driving force is big;
3, the present invention adopts long-plunger, and short sealing pump barrel can not accumulated long-pending sand in seal clearance, can reduce wear and avoids holddown;
4, the plunger of pump of the present invention is the driving that is placed the underground hydraulic pressure cylinder when upper and lower stroke, does not have the eccentric wear problem between bar, pipe, thereby is inclined shaft, and the oil recovery of horizontal well provides best oil production technology;
5, the present invention can adjust pressure, jig frequency, stroke of hydraulic system etc. easily according to the degree of depth oil of oil well and output etc.;
6, the characteristics that the present invention is bigger also are can to implement to collect a Hydraulic Station and pump simultaneously for several mouthfuls of oil wells simultaneously, can give full play to characteristics such as oil recovery efficiency, energy-conservation and floor space are little for this reason, and this also is that other oil production methods are incomparable;
7, the present invention has also designed screw pump device, can continue oil pumping when double acting hydraulic oil producing pump commutation stop pumping, and starting power in the time of can reducing the commutation oil pumping makes stressed more balance, stable, and election power is bigger.
8, the present invention is owing to adopt double hydraulic cylinder to drive the bidirectional ram pump oil recovery, and its output height is more than 1.6 times of oil well pump (unidirectional) output that same pump footpath is used in existing oil field, and can save energy 20～30%.
Description of drawings
Fig. 1 is the structural representation that the present invention provides embodiment;
Fig. 2 is the structural representation that the present invention provides screw pump device.
Mark among the figure: 1, the center oil pipe, 2, oil pipe, 3, plug socket, 4, overflow valve, 5, packer, 6, pump barrel, 7, petroleum pipeline, 8, long-plunger, 9, the delivery valve that moves about, 10, hollow draw-bar, 11, fixing inlet valve, 12, end cover, 13, hydraulic cylinder, 14, piston, 15, hollow draw-bar, 16, end cover, 17, fixing inlet valve, 18, two-way oil pumping pump barrel, 19, the delivery valve that moves about, 20, long-plunger, 21, delivery valve moves about, 22, petroleum pipeline, 23, fixing inlet valve, 24, end cover, 25, hollow draw-bar, 26, piston, 27, hydraulic cylinder, 28, hollow draw-bar, 29, end cover, 30, fixing inlet valve, 31, the delivery valve that moves about, 32, long-plunger, 33, pump barrel, 34, bottom valve, 35, Hydraulic Station, 36, heater, 37, one way valve, 38, sleeve pipe, 39, fuel-displaced one way valve, 40, screw pump, 41, in line check valve, 42, fuel-displaced one way valve, 43 hydraulic motors, 44, in line check valve.
The specific embodiment
Now with specific embodiment the present invention is described in further details in conjunction with the accompanying drawings.
As shown in Figure 1, the two-way oil well pump 18 of this multi-functional double acting hydraulic oil producing device places the sleeve pipe 38 under the oil well, be provided with long-plunger 20 in the two-way oil pumping pump barrel 18, on long-plunger 20, be provided with hollow draw-bar 15 and 25, on hollow draw-bar 15, be provided with piston 14, on hollow draw-bar 25, be provided with piston 26, piston 14 and 26 is located at respectively on hydraulic cylinder 13 and 27, two-way oil pumping pump barrel 18 is located between hydraulic cylinder 13 and 27, the delivery valve 19 and 21 that moves about is located at respectively on hollow draw-bar 15 and 25, below end cover 16 and 24 and above be respectively equipped with fixedly inlet valve 17 and 23, hydraulic cylinder 13 and 27 respectively by end cover 16 and 24 and two-way oil pumping pump barrel 18 link together, pump barrel 6 and 33 respectively by end cover 12 and 29 and hydraulic cylinder 13 and 27 link together, on end cover 12 and 29, the below is respectively equipped with fixedly inlet valve 11 and 30, long-plunger 8 and piston 14 link together by hollow draw-bar 10, piston 26 and long-plunger 32 link together by hollow draw-bar 28, the delivery valve 9 and 31 that moves about be located at respectively hollow draw-bar 10 and 28 on, lower end, the top of pump barrel 6 is connected with packer 5, the top of packer 5 is connected with overflow valve 4, the top of overflow valve 4 is connected with plug socket 3, plug socket 3 is connected with oil pipe 2, until being connected to well head.
Have connection-peg and center oil pipe 1 and put to the down-hole gradually, in the seat that connection-peg enters plug socket seals from well head.The port that can reach the port of center oil pipe 1 on the well head annular space that is formed by center oil pipe 1 and oil pipe 2 suits this moment is connected with two oil inlet and outlets of Hydraulic Station 35 respectively.
Be connected that hydraulic cylinder 13 and 27 advances, the petroleum pipeline 7 and 22 on the oil return opening is by packer 5, overflow valve 4 is connected with the lower interface of plug socket 3 respectively, thereby makes the oil extraction pump operation form the hydraulic system of a sealing.
As shown in Figure 2, described pump barrel 33 also with by screw pump 40, in line check valve 41, fuel-displaced one way valve 42, hydraulic motor 43 is connected with the screw pump device that in line check valve 44 is formed, wherein the oil inlet and outlet of hydraulic motor 43 is connected with 22 with petroleum pipeline 7 respectively, hydraulic motor 43 is under the effect of power fluid, the main shaft output torque drives screw pump 40 work, at this moment, crude oil just can advance from the in line check valve 41 of screw pump 40, flow into the cavity of resorption of pump barrel 33 from fuel-displaced one way valve 39, thereby finish the into process of crude oil, the high voltage power liquid that is entered into hydraulic motor 43 by petroleum pipeline 7 and 22 turns back to Hydraulic Station 35 from fuel-displaced one way valve 42 through petroleum pipeline 22 and 7 respectively.
The process of the present invention's operation:
During down stroke: the high voltage power liquid of Hydraulic Station 35 annular space, plug socket 3, overflow valve 4, packer 5 inner chambers and the petroleum pipeline 7 that center oil pipe 1 and oil pipe 2 constitutes of flowing through, enter hydraulic cylinder 13 and 27 epicoeles then respectively, long-plunger 8,20 and 32 drives descending by hollow draw-bar 10,15,25 and 28, at this moment, the delivery valve 9 and 21 that moves about is opened, and fixedly inlet valve 17 and 30 is opened, in line check valve 37 is opened, fixedly inlet valve 11 and 23 cuts out, and the delivery valve 19 and 31 that moves about cuts out, and bottom valve 34 cuts out.At this moment the crude oil of the crude oil in pump barrel 6 cavity of resorptions, the crude oil in two-way oil pumping pump barrel 18 cavity of resorptions and pump barrel 33 cavity of resorptions respectively by move about inlet valve 9 and 21 and in line check valve 37 enters hollow draw-bar 10,25 and 28, through the epicoele of pump barrel 6, the inner chamber of packer 5 and overflow valve enter in the annular space that oil pipe 2 and sleeve pipe 38 constitute and discharge until leading to well head.The epicoele of meanwhile two-way oil pumping pump barrel 18 and pump barrel 33 enters crude oil by fixing inlet valve 17 and 30 respectively, the power fluid of hydraulic cylinder 13 and 27 cavity of resorptions enters petroleum pipeline 22, enters in the fuel tank of center oil pipe 1 inner chamber backspace Hydraulic Station 35 through packer 5 inner chambers, overflow valve 4, plug socket 3.Move to the cavity of resorption terminal of hydraulic cylinder 13 and 27 up to piston 14 and 26.The oil recovery process when thereby oil extraction pump has been finished down stroke.
When upstroke, the high voltage power liquid of Hydraulic Station 35 is reverse, and promptly power fluid enters petroleum pipeline 22 from the flow through inner chamber of center oil pipe 1, plug socket 3, overflow valve 4 and packer 5 of well head.And enter the cavity of resorption of hydraulic cylinder 13 and 27 respectively, long-plunger 8,20 and 32 drives up by hollow draw-bar 10,15,25 and 28, moving about this moment, inlet valve 9 and 21 cuts out, fixedly inlet valve 17 and 30 cuts out, in line check valve 37 is closed, fixedly inlet valve 11 and 23 is opened, the delivery valve 19 and 31 that moves about is opened, and bottom valve 34 is opened.
At this moment pump barrel 6 and 18 cavity of resorption enter crude oil by fixing inlet valve 11 and 23, the power fluid of hydraulic cylinder 13 and 27 epicoeles enters petroleum pipeline 7, flow through packer 5, overflow valve 4, plug socket 3 enters the annular space that oil pipe 2 and center oil pipe 1 constitute, piston 14 and 26 until hydraulic cylinder 13 and 27 moves to the epicoele terminal, has finished oil production machine upstroke oil pumping process.
When two-way oil pumping pump barrel 18 commutates, just stopped advancing the oil extraction process, the pressure of the hydraulic system of this moment raises rapidly, hydraulic motor 43 has obtained higher operating pressure, and drive screw pump 40 suction crude oil, enter the cavity of resorption of pump barrel 33, by one way valve 37, via hollow draw-bar 28,25,15 and 10 inner chambers, the annular space that packer and oil pipe 2 and sleeve pipe 38 constitute, with the petroleum pipeline UNICOM on the well head, this has not only replenished two-way oil well pump 18 timely because of the commutation stop pumping, and the starting power when having reduced the commutation oil pumping simultaneously makes stressed more balance, stable, election power is bigger, and compliance is wider, can enhance productivity greatly.
Claims (2)
1. a multi-functional double acting hydraulic oil producing device includes Hydraulic Station, pump barrel, hollow rod, hydraulic cylinder and plunger, it is characterized in that
Described two-way oil pumping pump barrel (18) places the sleeve pipe (38) under the oil well, be provided with long-plunger (20) in the two-way oil well pump (18), on long-plunger (20), be provided with hollow draw-bar (15 and 25), on hollow draw-bar (15), be provided with piston (14), on hollow draw-bar (25), be provided with piston (26), piston (14) and (26) are located at respectively on hydraulic cylinder (13) and (27), pump barrel (18) is located between hydraulic cylinder (13) and (27), move about delivery valve (19) and (21) are located at respectively on hollow draw-bar (15) and (25), below and top in end cover (16) and (24) are respectively equipped with fixedly inlet valve (17) and (23), hydraulic cylinder (13) and (27) link together with two-way oil pumping pump barrel (18) by end cover (16) and (24) respectively, pump barrel (6) and (33) link together with hydraulic cylinder (13) and (27) by end cover (12) and (29) respectively, on end cover (12) and (29), the below is respectively equipped with fixedly inlet valve (11) and (30), long-plunger (8) and piston (14) link together by hollow draw-bar (10), piston (26) and long-plunger (32) link together by hollow draw-bar (28), move about delivery valve (9) and (31) be located at respectively hollow draw-bar (10) and (28) on, lower end, the top of pump barrel (6) is connected with packer (5), the top of packer (5) is connected with overflow valve (4), the top of overflow valve (4) is connected with plug socket (3), plug socket (3) is connected with oil pipe (2), until being connected to well head;
Have connection-peg and center oil pipe (1) is put to the down-hole gradually from well head, in the seat that connection-peg enters plug socket sealed, the port of the port of center oil pipe (1) and the annular space that formed by center oil pipe (1) and oil pipe (2) suit was connected with two oil inlet and outlets of Hydraulic Station (35) respectively on the well head;
Be connected that hydraulic cylinder (13) and (27) are advanced, the petroleum pipeline (7) on the oil return opening and (22) are by packer (5), overflow valve (4) is connected with the lower interface of plug socket (3) respectively.
2. according to the described multi-functional double acting hydraulic oil producing device of claim 1, it is characterized in that described pump barrel (33) also with by screw pump (40), in line check valve (41), fuel-displaced one way valve (42), hydraulic motor (43) and the screw pump device that in line check valve (44) is formed is connected, wherein the oil inlet and outlet of hydraulic motor (43) is connected with (22) with petroleum pipeline (7) respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910012350.9A CN101936147B (en) | 2009-07-03 | 2009-07-03 | Multifunctional double-acting hydraulic oil producing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910012350.9A CN101936147B (en) | 2009-07-03 | 2009-07-03 | Multifunctional double-acting hydraulic oil producing device |
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| CN101936147A true CN101936147A (en) | 2011-01-05 |
| CN101936147B CN101936147B (en) | 2017-08-11 |
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| CN200910012350.9A Active CN101936147B (en) | 2009-07-03 | 2009-07-03 | Multifunctional double-acting hydraulic oil producing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410478A (en) * | 2013-08-07 | 2013-11-27 | 中国石油化工股份有限公司 | Hollow oil pumping device for fluid producing profile tests |
| CN105625995A (en) * | 2016-01-29 | 2016-06-01 | 徐晓波 | Rodless drainage and mining system |
| CN105888617A (en) * | 2014-12-26 | 2016-08-24 | 卞康群 | Hydraulic linked double-acting rodless oil production device |
| CN106014910A (en) * | 2016-05-20 | 2016-10-12 | 东北石油大学 | Combined type double-acting rod type oil well pump and oil extraction method thereof |
| CN113431813A (en) * | 2021-07-25 | 2021-09-24 | 广州嵩晨机电科技有限公司 | Hydraulic system assembly mechanism for field petroleum extraction and reciprocating oil pumping control |
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| US6321854B1 (en) * | 1997-08-22 | 2001-11-27 | Giovanni Bisutti | Power tool |
| CN1370927A (en) * | 2001-02-23 | 2002-09-25 | 石油大学(北京) | Hydraulic feedback sand-preventing pump for flexible continuous pumping rod |
| CN1584284A (en) * | 2004-06-08 | 2005-02-23 | 沈阳丹迪科技有限公司 | Intelligent hydraulic oil pumping equipments |
| CN101220807A (en) * | 2007-01-08 | 2008-07-16 | 凌建军 | Lever oil pump capable of eliminating eccentric wear and directly flushing well |
| CN201460823U (en) * | 2009-07-03 | 2010-05-12 | 刘学柱 | Multifunctional double-acting hydraulic oil production device |
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| US6321854B1 (en) * | 1997-08-22 | 2001-11-27 | Giovanni Bisutti | Power tool |
| CN1370927A (en) * | 2001-02-23 | 2002-09-25 | 石油大学(北京) | Hydraulic feedback sand-preventing pump for flexible continuous pumping rod |
| CN1584284A (en) * | 2004-06-08 | 2005-02-23 | 沈阳丹迪科技有限公司 | Intelligent hydraulic oil pumping equipments |
| CN101220807A (en) * | 2007-01-08 | 2008-07-16 | 凌建军 | Lever oil pump capable of eliminating eccentric wear and directly flushing well |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410478A (en) * | 2013-08-07 | 2013-11-27 | 中国石油化工股份有限公司 | Hollow oil pumping device for fluid producing profile tests |
| CN103410478B (en) * | 2013-08-07 | 2015-12-09 | 中国石油化工股份有限公司 | The hollow oil rig of a kind of producing profile testing |
| CN105888617A (en) * | 2014-12-26 | 2016-08-24 | 卞康群 | Hydraulic linked double-acting rodless oil production device |
| CN105625995A (en) * | 2016-01-29 | 2016-06-01 | 徐晓波 | Rodless drainage and mining system |
| CN105625995B (en) * | 2016-01-29 | 2018-07-03 | 徐晓波 | Without bar mining system |
| CN106014910A (en) * | 2016-05-20 | 2016-10-12 | 东北石油大学 | Combined type double-acting rod type oil well pump and oil extraction method thereof |
| CN106014910B (en) * | 2016-05-20 | 2018-04-20 | 东北石油大学 | Combined type double acting rod-type pumping unit and its oil production method |
| CN113431813A (en) * | 2021-07-25 | 2021-09-24 | 广州嵩晨机电科技有限公司 | Hydraulic system assembly mechanism for field petroleum extraction and reciprocating oil pumping control |
| CN113431813B (en) * | 2021-07-25 | 2024-04-12 | 广州嵩晨机电科技有限公司 | Hydraulic system assembly mechanism for field oil extraction and reciprocating oil pumping control |
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| CN101936147B (en) | 2017-08-11 |
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Inventor after: Liu Xuezhu Inventor before: Liu Xuezhu Inventor before: Huang Wentao |
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Effective date of registration: 20170601 Address after: 343, room 7-5, 110042 Beihai street, Dadong District, Liaoning, Shenyang Applicant after: Liu Xuezhu Address before: 343, room 7-5, 110042 Beihai street, Dadong District, Liaoning, Shenyang Applicant before: Liu Xuezhu Applicant before: Huang Wentao |
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