CN106761578B - Adjustable hydraulic oil pumping unit device - Google Patents
Adjustable hydraulic oil pumping unit device Download PDFInfo
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- CN106761578B CN106761578B CN201710026328.4A CN201710026328A CN106761578B CN 106761578 B CN106761578 B CN 106761578B CN 201710026328 A CN201710026328 A CN 201710026328A CN 106761578 B CN106761578 B CN 106761578B
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- cavity
- cylinder
- piston
- plunger
- pumping unit
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- 238000005086 pumping Methods 0.000 title claims abstract description 26
- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 10
- 239000003921 oil Substances 0.000 claims abstract description 21
- 230000009467 reduction Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 230000033001 locomotion Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 241001023788 Cyttus traversi Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Reciprocating Pumps (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A controllable hydraulic oil pumping unit is characterized in that a three-phase asynchronous motor is connected with a reduction gearbox, the reduction gearbox is connected with a three-link structure, and a guide rod is connected to a piston; the cavity B of the piston cylinder is communicated with the plunger cylinder, and a fixed pulley and a load are fixed on the plunger; the cavity A of the plunger type cylinder is communicated with the cavity C at the bottom of the piston cylinder; the cavity C is connected to an oil storage tank, liquid oil is filled in the plunger cylinder and the piston cylinder, and the valve is closed; determining the time of the up stroke and the down stroke according to the pre-designed displacement, and setting a timing switch according to the time to enable the timing switch to be in a closed state in the up stroke and enable the down stroke to be in an open state; in the whole working process, the motor provides power, the piston is driven to move up and down through the three-connecting-rod structure in sequence, and the up-and-down movement of the sucker rod is realized through hydraulic transmission; finally, the power of the motor is changed along with the change of the wellhead flow by arranging a sensor; the invention has certain reference significance for the field application of the hydraulic pumping unit.
Description
Technical Field
The invention relates to oil extraction equipment in the development process of an oil-gas field, in particular to an adjustable hydraulic oil pumping unit device which is used for lifting underground crude oil to the ground after the well cementation of an oil-gas well is finished.
Technical Field
The oil and gas resources in China are rich in reserves, but most of oil reservoirs are low in energy and cannot be subjected to self-injection or even the self-injection yield is very small, and the practice of directly utilizing the energy of the oil reservoirs to recover oil proves that the oil recovery is not feasible. In the current petroleum exploitation in China, mechanical oil exploitation is the main exploitation mode, and a sucker rod pump oil pumping unit accounts for more than 90% of the total mechanical oil exploitation, and the energy consumption accounts for about 45% of the total energy consumption. As is known, sucker rod pumping installations are typically characterized by large equipment, in particular, counterweights must be installed, which is expensive and consumes a lot of electricity. In addition, the landform is complicated in China, most oil fields are distributed in mountainous regions, and the transportation cost of transporting huge equipment can be known.
In view of the above situation, researchers at home and abroad have studied the pumping unit of the hydraulic device from 80 s in the 20 th century and have achieved a lot of results. The hydraulic pumping unit has the advantages of light weight, small volume, good economical efficiency, adjustable stroke times and length and the like. However, the existing hydraulic pumping units at home and abroad still have a plurality of problems: the device has the advantages of complex structure, increased stress of each part, poor liquid tightness and the like. These problems have severely affected the use of hydraulic pumping units and the development of practical and reliable hydraulic pumping units is of particular interest for their widespread use in the oil industry. The technology of the foreign hydraulic pumping unit is developed quickly, related products with excellent performance are available at present, but the development of the hydraulic pumping unit is slow due to hydraulic sealing, transmission and the like in China. In particular, an economic, effective, environment-friendly and reliable hydraulic oil pumping device is lacked.
Disclosure of Invention
Aiming at the defects of the existing equipment and technology, the invention aims to provide an adjustable hydraulic oil pumping unit device which utilizes hydraulic pressure to transfer the energy of a motor so as to drive a polished rod to realize up-stroke and down-stroke movement, and can adjust the power of the motor according to the flow change of a wellhead, thereby overcoming the limitation of the existing equipment and promoting the application of the hydraulic oil pumping unit in the petroleum industry.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a controllable hydraulic oil pumping unit device comprises a three-phase asynchronous motor 17 for providing power, wherein a signal end of the three-phase asynchronous motor 17 is connected with a sensor input of a wellhead, a power output of the three-phase asynchronous motor 17 is connected with a power input of a reduction gearbox 26 through a belt pulley, a power output device of the reduction gearbox 26 is connected with a crank 16, the crank 16, a connecting rod 15 and a beam 14 are sequentially connected to form a three-connecting-rod structure, wherein the middle part of the beam 14 is connected with the upper end of a guide rod 27 through a sliding sleeve 28, and the tail end of the beam 14 is connected to a support 13; the lower end of the guide rod 27 is connected to the piston 10; the piston 10 moves in the piston cylinder 8, the inner wall of the piston cylinder 8 is provided with a bush 9, the bottom of the piston cylinder 8 is provided with a suction valve 11, and the suction valve 11 and the piston cylinder 8 form a cavity B24 in a sealing way; the cavity B24 is communicated with a plunger cylinder 21 through a one-way valve 7, a hollow plunger 18 is arranged in the plunger cylinder 21, a fixed pulley 19 is fixed on the plunger 18, and a load 20 is connected to the fixed pulley 19; the whole plunger cylinder 21 is positioned above the base 6; the cavity A23 of the plunger cylinder 21 is communicated with the cavity C25 at the bottom of the piston cylinder 8 through a pipeline and a timing switch 5; the C-cavity 25 is connected to the oil storage tank 1 through a pipeline 4, and a valve 3 and a pump 2 are installed on the pipeline 4.
The piston 10 is cylindrical.
The invention has the beneficial effects that: the motor drives the three connecting rods to operate, so that the piston in the piston cylinder moves up and down, the extruded liquid oil enters the plunger cylinder, and the polish rod moves up and down through the plunger cylinder. The whole device provides power through the motor, the power is transmitted hydraulically, the only energy consumption is the friction loss among all the parts, and the electric energy utilization rate is high; the inner walls of the plunger type cylinder and the piston cylinder are provided with the bushings, so that the sealing performance of the device is improved, meanwhile, the friction loss is reduced, and the service life of the equipment is prolonged; by arranging the sensing device, the power of the motor can be automatically changed along with the liquid discharge capacity of the wellhead, and manual regulation and control are not needed like the traditional device; through setting up fluid infusion jar, can regularly carry out the fluid infusion to the piston cylinder. Meanwhile, the pumping unit does not need equipment such as a balance block, a horse head and the like, is simple in device, and reduces the extra loss of the traditional pumping unit due to the fact that the balance block, the horse head and the like are driven.
The invention has simple structure, good sealing performance and high system efficiency, and is expected to have guiding significance for improving the research and development of hydraulic pumping units in China.
4. Description of the drawings
Fig. 1 is a schematic structural diagram of a hydraulic pumping unit of the whole set of device.
Fig. 2 is a schematic diagram of a sensor control device.
Fig. 3 is a schematic structural view of a piston.
5. Detailed description of the preferred embodiments
The construction and operation of the present invention will be described in detail with reference to the accompanying drawings.
A controllable hydraulic oil pumping unit device comprises a three-phase asynchronous motor 17 for providing power, referring to fig. 2, a signal end of the three-phase asynchronous motor 17 is connected with a sensor signal of a wellhead, and converted information is transmitted to the three-phase asynchronous motor through the sensor of the wellhead to realize the control of the three-phase asynchronous motor 17; as shown in fig. 1, the power output of the three-phase asynchronous motor 17 is connected with the power input of the reduction gearbox 26 through a belt pulley, the power output device of the reduction gearbox 26 is connected with the crank 16, and the three-phase asynchronous motor 17, the reduction gearbox 26 and the crank 16 are positioned on the base 22; the crank 16, the connecting rod 15 and the beam 14 are connected in sequence to form a three-connecting-rod structure, wherein the middle part of the beam 14 is connected with the upper end of a guide rod 27 through a sliding sleeve 28, and the tail end of the beam 14 is connected to the bracket 13; the lower end of the guide rod 27 is connected to the piston 10; the piston 10 moves in the piston cylinder 8, a lining 9 is arranged on the inner wall of the piston cylinder 8, a suction valve 11 is arranged at the bottom of the piston cylinder 8, and the suction valve 11 and the piston cylinder 8 form a cavity B24 in a sealing mode; the cavity B24 is filled with oil 12, the cavity B24 is communicated with the plunger cylinder 21 through the one-way valve 7, a hollow plunger 18 is arranged in the plunger cylinder 21, a fixed pulley 19 is fixed on the plunger 18, and a load 20 is connected to the fixed pulley 19; the whole plunger cylinder 21 is positioned above the base 6; the cavity A23 of the plunger cylinder 21 is communicated with the cavity C25 at the bottom of the piston cylinder 8 through a pipeline and a timing switch 5; the C-cavity 25 is connected to the oil storage tank 1 through a pipeline 4, and a valve 3 and a pump 2 are installed on the pipeline 4.
As shown in fig. 3, the piston 10 is cylindrical, mainly for the purpose of increasing the sealing property.
The working principle of the invention is as follows:
before the normal start, the liquid oil in the liquid storage tank 1 is pumped into the cavity C25 by the pump 2, and in the process, the switch 5 is adjusted to be in an open state, so that the liquid oil enters the cavity C25 and the cavity A23. As the liquid increases, the suction valve 11 is pushed open by the pressure and enters the B cavity 24, and after the piston cylinder 8 and the plunger cylinder 21 are filled with liquid, the motor is turned off and the valve 3 is tightened.
The swabbing process of the hydraulic pumping unit comprises the following steps:
an upstroke: turning on the motor 17, driving the crank 16 to rotate downwards through the reduction gearbox 26, wherein the motion track of the crank 16 is a circle; the crank 16, the connecting rod 15 and the beam 14 are of a three-link structure, wherein the tail section of the beam 14 is fixed on the bracket 13, the middle section of the beam is provided with a sliding sleeve 28, and during the three-link movement, the sliding sleeve 28 forces the guide rod 27 below the sliding sleeve to move downwards. The suction valve 11 is in a closed state at this time under the action of pressure, the liquid in the cavity B24 enters the cavity A23, namely the plunger cylinder, through the one-way valve 7 under the action of pressure, and in the process, the timing switch 5 is in a closed state; the increased pressure inside the a-chamber 23 causes the ram 18 to move upwards, thereby lifting the crude oil from the bottom of the well to the surface, by means of the load 20 moving upwards via the fixed pulley thereon.
A down stroke: by setting the timing of the switch 5, the switch 5 is turned on when the plunger 18 rises to the top dead center; at this time, the liquid oil in the a chamber 23 flows into the C chamber 25 through the pipe, the liquid pressure in the a chamber 23 is reduced, the plunger 18 is lowered, the load 20 is lowered along with the plunger, and when the load is lowered to the top dead center, the timing switch 5 is automatically closed again.
The time of the time switch 5 is determined by the actual displacement of the work, and the time of the time switch is closed and opened, which is equal to the time of the up stroke and the down stroke. That is, in the up stroke, the timing switch 5 is closed; in the down stroke, the time switch 5 is opened.
The sensor of the wellhead sets relevant parameter values at first, and the sensor of the wellhead is connected with signals of the wellhead, so that the power of the three-phase asynchronous motor 17 can be regulated and controlled according to the change of wellhead flow (the wellhead flow change value is larger than a certain set value).
Claims (2)
1. A controllable hydraulic oil pumping unit is characterized by comprising a three-phase asynchronous motor (17) for providing power, wherein a signal end of the three-phase asynchronous motor (17) is connected with a sensor input of a well head, a power output of the three-phase asynchronous motor (17) is connected with a power input of a reduction gearbox (26) through a belt pulley, a crank (16) is connected to a power output device of the reduction gearbox (26), the crank (16), a connecting rod (15) and a beam (14) are sequentially connected to form a three-connecting-rod structure, wherein the middle part of the beam (14) is connected with the upper end of a guide rod (27) through a sliding sleeve (28), and the tail end of the beam (14) is connected to a support (13); the lower end of the guide rod (27) is connected to the piston (10); the piston (10) moves in the piston cylinder (8), a lining (9) is arranged on the inner wall of the piston cylinder (8), a suction valve (11) is arranged at the bottom of the piston cylinder (8), and the suction valve (11) and the piston cylinder (8) form a cavity B (24) in a sealing mode; the cavity B (24) is communicated with the plunger cylinder (21) through the one-way valve (7), a hollow plunger (18) is arranged in the plunger cylinder (21), a fixed pulley (19) is fixed on the plunger (18), and a load (20) is connected to the fixed pulley (19); the whole plunger cylinder (21) is positioned above the base (6); the cavity A (23) of the plunger cylinder (21) is communicated with the cavity C (25) at the bottom of the piston cylinder (8) through a pipeline and a timing switch (5); the C cavity (25) is connected to the oil storage tank (1) through a pipeline (4), and a valve (3) and a pump (2) are installed on the pipeline (4).
2. The adjustable hydraulic pumping unit apparatus according to claim 1, wherein the piston (10) is cylindrical in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026328.4A CN106761578B (en) | 2017-01-13 | 2017-01-13 | Adjustable hydraulic oil pumping unit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026328.4A CN106761578B (en) | 2017-01-13 | 2017-01-13 | Adjustable hydraulic oil pumping unit device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761578A CN106761578A (en) | 2017-05-31 |
| CN106761578B true CN106761578B (en) | 2023-02-28 |
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ID=58945523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710026328.4A Active CN106761578B (en) | 2017-01-13 | 2017-01-13 | Adjustable hydraulic oil pumping unit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761578B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049844A (en) * | 2018-01-10 | 2018-05-18 | 北京态金科技有限公司 | Oil rig |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061218U (en) * | 1990-01-20 | 1990-08-29 | 郭振洲 | Long-stroke hydraulic type oil pumping machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007040421A1 (en) * | 2005-10-03 | 2007-04-12 | Bondarenko, Oleg Nikolaevich | Downhole electric driven pump unit |
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2017
- 2017-01-13 CN CN201710026328.4A patent/CN106761578B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061218U (en) * | 1990-01-20 | 1990-08-29 | 郭振洲 | Long-stroke hydraulic type oil pumping machine |
Non-Patent Citations (1)
| Title |
|---|
| 全状态调控液压抽油机在聚驱井采油的应用;刘书孟等;《石油机械》(第09期);全文 * |
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| CN106761578A (en) | 2017-05-31 |
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