CN110080724B - Double-well pumping unit - Google Patents
Double-well pumping unit Download PDFInfo
- Publication number
- CN110080724B CN110080724B CN201910338528.2A CN201910338528A CN110080724B CN 110080724 B CN110080724 B CN 110080724B CN 201910338528 A CN201910338528 A CN 201910338528A CN 110080724 B CN110080724 B CN 110080724B
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- China
- Prior art keywords
- hydraulic cylinder
- cylinder mechanism
- hydraulic
- underground
- speed reducing
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- 238000005086 pumping Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 91
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 239000003129 oil well Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 9
- 239000003921 oil Substances 0.000 description 15
- 238000010276 construction Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
-
- 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
- F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a double-well pumping unit which comprises a motor speed reducing mechanism, a hydraulic cylinder mechanism, a hydraulic transmission system and an underground hydraulic cylinder mechanism which are sequentially connected, wherein the motor speed reducing mechanism and the hydraulic cylinder mechanism are arranged on the ground, the hydraulic transmission system and the underground hydraulic cylinder mechanism are arranged in an oil well, output shafts at two ends of the motor speed reducing mechanism are connected with the hydraulic cylinder mechanism through transmission mechanisms, the hydraulic cylinder mechanism is communicated with the underground hydraulic cylinder mechanism through the hydraulic transmission system, and the hydraulic cylinder mechanism, the hydraulic transmission system and the underground hydraulic cylinder mechanism are filled with power mediums.
Description
Technical Field
The invention relates to the technical field of oil extraction in oil fields, in particular to a double-well pumping unit.
Background
The four-bar pumping unit has been used for nearly two hundred years, and has been dominant because of its simple and durable structure. The long-stroke linear pumping unit, the double horsehead pumping unit, the six-link pumping unit, the variable-curvature-radius double horsehead pumping unit, the swing rod pumping unit and the cluster well pumping unit which are developed later by technicians are applied to a certain extent, and the long-stroke, energy-saving, long-life and easy-damaged part replacement are convenient, so that the well repair is the design direction of the technicians. However, in the prior art, a large amount of ground facilities are usually arranged at an oilfield wellhead, such as a support frame, pulleys and the like, so that the ground facilities are too bulky, meanwhile, the service life of the pulley steel wire rope structure is short, and the construction cost is too high.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide a double-well pumping unit, which reduces the investment of ground equipment and simplifies the oil extraction wellhead.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a twin-well beam-pumping unit, includes motor reducing gear, pneumatic cylinder mechanism, hydraulic transfer system and the underground pneumatic cylinder mechanism that connects gradually, wherein, motor reducing gear and pneumatic cylinder mechanism set up subaerial, hydraulic transfer system and underground pneumatic cylinder mechanism set up in the oil well, motor reducing gear symmetry is provided with two output shafts, the output shaft through drive mechanism with pneumatic cylinder mechanism connects, pneumatic cylinder mechanism passes through hydraulic transfer system with underground pneumatic cylinder mechanism communicates pneumatic cylinder mechanism, hydraulic transfer system and underground pneumatic cylinder mechanism have been full of the power medium.
Further, the motor speed reducing mechanism comprises a motor and a speed reducing box, the speed reducing box is a two-stage speed reducing box, and two output shafts are arranged on the speed reducing box.
Further, the transmission mechanism comprises a crank and a connecting rod, the output shafts at two ends of the motor speed reducing mechanism are respectively connected with one set of transmission mechanism, and the two sets of transmission mechanisms are arranged on the same straight line.
Further, the hydraulic cylinder mechanism comprises a pull rod, a cylinder sleeve and a piston, and the pull rod is connected with the connecting rod.
Further, the hydraulic transmission system comprises a connecting pipeline, a sleeve four-way joint, a pump cylinder hanger, a sleeve, a pump cylinder and a packer, wherein one end of the connecting pipeline is communicated with the hydraulic cylinder mechanism, and the other end of the connecting pipeline is communicated with the sleeve four-way joint to transmit power fluid into the sleeve.
Further, the downhole hydraulic cylinder mechanism comprises a hollow piston, a hollow sealing rod and a sealer, and the pump cylinder, the hollow sealing rod and the sealer form a sliding seal.
Further, a first diversion hole is formed in the wall of the pump cylinder, and power fluid is transferred to the hollow piston from the first diversion hole.
Further, a second diversion hole is formed in the lower portion of the hollow sealing rod, and the lower end of the hollow sealing rod is connected with an underground sucker rod.
Further, the casing is connected with an oil pipe through the packer.
According to the double-horsehead pumping unit, the ground facilities are only provided with the motor speed reducing mechanism and the hydraulic cylinder mechanism, so that a large number of ground facilities are prevented from being arranged at the wellhead of an oil field, for example, a bracket and a pulley are erected to make the ground facilities too bulky, meanwhile, the service life of the pulley steel wire rope structure is short, the construction cost is too high, in the prior art, the double-horsehead pumping unit can only start two oil wells at the same time, one part cannot start a well when the other part is used for repairing the well, the problems that the construction cost of the ground facilities is high, one side of the oil well is not limited by maintenance of the other part when the oil is extracted are solved, and the working efficiency is improved; according to the invention, the hydraulic cylinder mechanism is communicated with the underground hydraulic cylinder mechanism through the hydraulic transmission system, and the reaction force generated by the self weight of the oil pumping mechanisms in the two oil wells is transmitted to the piston in the hydraulic cylinder mechanism through the power fluid, so that the power output of the motor speed reducing mechanism is reduced, and the energy-saving effect is achieved.
Drawings
FIG. 1 is a schematic diagram of a half-side structure of the present invention;
Fig. 2 is a schematic structural view of the present invention.
Detailed Description
In order to clearly illustrate the design concept of the present invention, the present invention will be described with reference to examples.
In the description of the present embodiment, the terms "inner", "outer", "front", "rear", "left", "right", etc. indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, and are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the example shown in fig. 1 and 2, the double-well pumping unit comprises a motor speed reducing mechanism 1, a hydraulic cylinder mechanism, a hydraulic transmission system and an underground hydraulic cylinder mechanism which are sequentially connected, wherein the motor speed reducing mechanism 1 and the hydraulic cylinder mechanism are arranged on the ground, the hydraulic transmission system and the underground hydraulic cylinder mechanism are arranged in an oil well, two output shafts are symmetrically arranged on the motor speed reducing mechanism 1 and are connected with the hydraulic cylinder mechanism through a transmission mechanism, and the hydraulic cylinder mechanism is communicated with the underground hydraulic cylinder mechanism through the hydraulic transmission system and is filled with power fluid.
In the example, the double-well pumping unit is provided with the motor speed reducing mechanism and the hydraulic cylinder mechanism, so that a large number of ground facilities are prevented from being arranged at the wellhead of an oil field, for example, a bracket and pulleys are erected to make the ground facilities too bulky, meanwhile, the service life of the pulley steel wire rope structure is shorter, the construction cost is too high, and the double-horsehead pumping unit in the prior art can only start two oil wells at the same time, and when one well is repaired, the other well cannot be started, the double-well pumping unit can effectively solve the problems that the construction cost of the ground facilities is high, and when one side oil well is used for oil extraction, the other well is not limited by the well repair, and the working efficiency is improved; according to the invention, the hydraulic cylinder mechanism is communicated with the underground hydraulic cylinder mechanism through the hydraulic transmission system, and the reaction force generated by the self weight of the oil pumping mechanisms in the two oil wells is transmitted to the piston in the hydraulic cylinder mechanism through the power fluid, so that the power output of the motor speed reducing mechanism is reduced, and the energy-saving effect is achieved.
As shown in fig. 1 and 2, in the example shown in fig. 2, the motor reducing mechanism 1 includes a motor and a reducing gear box, the reducing gear box is a two-stage reducing gear box, the transmission mechanism includes a crank 2 and a connecting rod 3, two output shafts symmetrically arranged on the two-stage reducing gear box in the motor reducing mechanism 1 are respectively connected with a set of transmission mechanism, two sets of transmission mechanisms are piled up to be arranged at two ends of the output shaft of the motor reducing mechanism 1, the hydraulic cylinder mechanism includes a pull rod 4, a cylinder sleeve 5 and a piston 6, the pull rod 4 is connected with the connecting rod 3 through a shaft, the hydraulic transmission system includes a connecting pipeline 7, a sleeve four-way 8, a pump cylinder hanger 9, a sleeve 10, a pump cylinder 11 and a packer 14, one end of the connecting pipeline 7 is communicated with the hydraulic cylinder mechanism, and the other end of the connecting pipeline is communicated with the sleeve four-way 8 to transmit power liquid into the sleeve 10.
In the above example, the ground facility is the motor reducing mechanism 1, and two symmetrically arranged transmission systems, hydraulic cylinder mechanisms and hydraulic connecting systems, so that the whole structure is simple, the connection is convenient, and the construction cost of the ground facility is low.
Referring to fig. 1, the oil well upper end sets up pipe sleeve cross 8, and the ground oil delivery pipe is connected on pipe sleeve cross 8 top, and oil recovery mechanism sets up in the sleeve pipe 10 in the pit, and pump cylinder 11 passes through pump cylinder hanger 9 and the sleeve pipe cross 8 cooperation joint on oil well top, is provided with hydraulic cylinder mechanism in the pump cylinder 11 in the pit, includes: the pump cylinder 11, the hollow sealing rod 13 and the sealer 11.2 form sliding sealing, a first diversion hole 11.1 is formed in the wall of the pump cylinder 11, power fluid is transmitted to the hollow piston 12 from the first diversion hole 11.1, the hollow piston 12 is pushed to move upwards, a second diversion hole 13.1 is formed in the lower portion of the hollow sealing rod 13, the lower end of the hollow sealing rod 13 is connected with an underground pumping rod 16, and a packer 14 is arranged between the sleeve 10 and an oil pipe 15 at the bottom end of the hollow sealing rod 13.
In the above example, referring to fig. 1, when the piston 6 in the hydraulic cylinder mechanism on the bottom surface pushes the power fluid from the connecting pipeline 7 into the sleeve 10 in the oil well through the sleeve four-way joint 8, the power fluid enters the cavity formed by the hollow piston 12, the hollow sealing rod 13 and the inner side wall of the pump barrel 11 from the first diversion hole 11.1 on the pump barrel 11, and pushes the hollow piston 12 to move upwards, so that the crude oil in the cavity below the sliding seal is sucked up due to the negative pressure, and when the motor reducing mechanism 1 is connected with the pulling piston 6 through the crank 2 connecting rod 3, the hollow piston 12 moves downwards under the self weight of the motor and the oil pumping mechanism in the oil well, so that the crude oil in the cavity below the sliding seal enters the oil delivery pipe from the second diversion hole 13.1.
It should be noted that some of the structures may be selected differently than the specific examples given above. These are all made by those skilled in the art based on their basic skills on the understanding of the idea of the invention and are not exemplified here.
Finally, it is to be understood that the above embodiments are merely exemplary embodiments employed for the purpose of illustrating the principles of the present invention, however, the present invention is not limited thereto. Various modifications and improvements may be made by those skilled in the art without departing from the principles and spirit of the invention, and such modifications and improvements are also considered within the scope of the invention.
Claims (3)
1. The double-well pumping unit is characterized by comprising a motor speed reducing mechanism, a hydraulic cylinder mechanism, a hydraulic transmission system and an underground hydraulic cylinder mechanism which are sequentially connected, wherein the motor speed reducing mechanism and the hydraulic cylinder mechanism are arranged on the ground, the hydraulic transmission system and the underground hydraulic cylinder mechanism are arranged in an oil well, the motor speed reducing mechanism is provided with two output shafts, the motor speed reducing mechanism comprises a motor and a reduction gearbox, the reduction gearbox is a two-stage reduction gearbox, the reduction gearbox is provided with two output shafts, the output shafts are connected with the hydraulic cylinder mechanism through a transmission mechanism, the transmission mechanism comprises a crank and a connecting rod, the output shafts at two ends of the motor speed reducing mechanism are respectively connected with one set of transmission mechanism, the two sets of transmission mechanisms are arranged on the same straight line, the hydraulic cylinder mechanism is communicated with the underground hydraulic cylinder mechanism through the hydraulic transmission system, the hydraulic cylinder mechanism, the hydraulic transmission system and the underground hydraulic cylinder mechanism are filled with power mediums, and the hydraulic transmission system comprises a connecting pipe, a sleeve, a pump cylinder hanger, a sleeve and a packer, and one end of the connecting pipe are communicated with the hydraulic cylinder through the connecting pipe, and the other end of the connecting pipe is communicated with the hydraulic cylinder through the connecting sleeve; the underground hydraulic cylinder mechanism comprises a hollow piston, a hollow sealing rod and a sealer, and the pump cylinder, the hollow sealing rod and the sealer form sliding seal; the wall of the pump cylinder is provided with a first diversion hole, and power fluid is transmitted to the hollow piston from the first diversion hole; the lower part of the hollow sealing rod is provided with a second diversion hole, and the lower end of the hollow sealing rod is connected with an underground sucker rod.
2. The twin-well pumping unit of claim 1, wherein the hydraulic cylinder mechanism comprises a pull rod, a cylinder liner and a piston, the pull rod being connected to the connecting rod.
3. The twin-well pumping unit of claim 1, wherein the packer is disposed between the bottom end of the casing and the tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910338528.2A CN110080724B (en) | 2019-04-25 | 2019-04-25 | Double-well pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910338528.2A CN110080724B (en) | 2019-04-25 | 2019-04-25 | Double-well pumping unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110080724A CN110080724A (en) | 2019-08-02 |
| CN110080724B true CN110080724B (en) | 2024-07-02 |
Family
ID=67416702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910338528.2A Active CN110080724B (en) | 2019-04-25 | 2019-04-25 | Double-well pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110080724B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2221133C2 (en) * | 1999-10-19 | 2004-01-10 | Иванников Владимир Иванович | Process of fluid lifting from well and gear for its realization |
| CN105649579A (en) * | 2016-03-21 | 2016-06-08 | 闫俊杰 | Single-pipe rodless hydraulic trial production device with well groups with small well spacing |
| CN205592089U (en) * | 2016-04-11 | 2016-09-21 | 珠海思美达科技有限公司 | Single motor biax output combination pump |
| CN210033383U (en) * | 2019-04-25 | 2020-02-07 | 托普威尔石油技术股份公司 | Double-well pumping unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2250340A2 (en) * | 2008-01-28 | 2010-11-17 | Petro Hydraulic Lift System, L.L.C. | Hydraulic oil well pumping apparatus |
| CN109192051A (en) * | 2018-11-08 | 2019-01-11 | 吉林大学 | A kind of motor racing analog platform device and method that liquid is electrically coupled |
-
2019
- 2019-04-25 CN CN201910338528.2A patent/CN110080724B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2221133C2 (en) * | 1999-10-19 | 2004-01-10 | Иванников Владимир Иванович | Process of fluid lifting from well and gear for its realization |
| CN105649579A (en) * | 2016-03-21 | 2016-06-08 | 闫俊杰 | Single-pipe rodless hydraulic trial production device with well groups with small well spacing |
| CN205592089U (en) * | 2016-04-11 | 2016-09-21 | 珠海思美达科技有限公司 | Single motor biax output combination pump |
| CN210033383U (en) * | 2019-04-25 | 2020-02-07 | 托普威尔石油技术股份公司 | Double-well pumping unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110080724A (en) | 2019-08-02 |
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