CN113550898A - Oil-well pump device for oil and gas exploitation and method thereof - Google Patents
Oil-well pump device for oil and gas exploitation and method thereof Download PDFInfo
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- CN113550898A CN113550898A CN202010335037.5A CN202010335037A CN113550898A CN 113550898 A CN113550898 A CN 113550898A CN 202010335037 A CN202010335037 A CN 202010335037A CN 113550898 A CN113550898 A CN 113550898A
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- pump device
- gas exploitation
- well pump
- well
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- 239000003129 oil well Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims description 19
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 33
- 241000191291 Abies alba Species 0.000 claims abstract description 4
- 230000001012 protector Effects 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000005086 pumping Methods 0.000 claims description 12
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 92
- 239000007789 gas Substances 0.000 description 51
- 238000000605 extraction Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/008—Pumps for submersible use, i.e. down-hole pumping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
- F04C14/185—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by varying the useful pumping length of the cooperating members in the axial direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The oil well pump device for oil and gas exploitation is characterized in that a sleeve is connected to the lower end of a ground Christmas tree, an oil pipe is arranged in the sleeve, the annular space between the oil pipe and the sleeve is filled with well fluid, the lower end of the oil pipe is connected with an oil well pump device for oil and gas exploitation, the oil well pump device for oil and gas exploitation and a matched submersible motor and a protector are installed at a preset position underground, the upper end of the oil well pump device for oil and gas exploitation is connected with the oil pipe, the submersible motor drives the oil well pump device for oil and gas exploitation to rotate, the well fluid is sucked into the oil well pump device for oil and gas exploitation from a liquid inlet at the lower end of the oil well pump device for oil and gas exploitation and is conveyed to a wellhead gathering and conveying pipeline through a liquid outlet after being extruded through a cavity channel. The oil well pump device for oil and gas exploitation has the advantages of good well condition adaptability, energy conservation, high efficiency, small volume and convenience in installation.
Description
Technical Field
The invention relates to the technical field of oil and gas exploitation, belongs to the technical field of oil-well pumps, particularly relates to an oil-well pump device for oil and gas exploitation and a method thereof, and particularly relates to a dual-rotor oil-well pump device for oil and gas exploitation and a method thereof.
Background
Oil and gas extraction is a process of extracting oil, natural gas, and the like buried in an underground oil reservoir from the ground. At present, in the oil and gas exploitation process, oil exploitation equipment mainly comprises two types, one is rod oil exploitation equipment, and the other is rodless oil exploitation equipment. The rod oil extraction equipment is oil extraction equipment which drives a sucker rod string by power equipment on the ground through a series of mechanical transmission and drives a downhole pump to reciprocate or rotate by the sucker rod string so as to pump crude oil or water in a well to the ground, and is typically represented by pumping unit-sucker rod-oil well pump three-pumping equipment and a screw pump. The rodless oil production equipment is oil production equipment which does not use a sucker rod string to transmit energy and uses a cable or high-pressure liquid to transmit energy, and is represented by an electric submersible pump and an oil submersible screw pump.
At present, the defects and disadvantages caused by using the rod production equipment and the rodless production equipment are as follows:
1. the defects and shortcomings of the rod oil production equipment are as follows: the oil extraction equipment with the oil pumping unit not only needs a large amount of ground facilities, but also has larger driving devices, large steel consumption, longer underground pump, and is not suitable for the environment with smaller underground inclined shaft section positions such as inclined shaft, horizontal well, S well and the like, and on the other hand, the oil pumping unit has eccentric wear phenomenon with the pipe wall when moving up and down, and the problem that the oil pumping unit drops or is seriously worn frequently occurs. The average efficiency of the equipment system is less than 30 percent, and the energy utilization rate is lower, so the equipment is high-power, high-energy-consumption and low-efficiency equipment. And the abrasion between the sucker rod and the pipe wall is serious when the sucker rod in the screw pump system rotates, and the comprehensive efficiency is lower.
2. The defects and shortcomings of the rodless oil production equipment are as follows: the submersible electric pump is arranged underground, the system is complex, the structure is long, the cost of ground high-voltage power supply equipment is high, and the one-time investment of the equipment is large. Meanwhile, the pump body cannot adapt to the special requirements of the inclined shaft section due to the limitation of the structural length of the pump body. The submersible screw pump also has the special requirement that the submersible screw pump cannot adapt to the inclined shaft section due to the limitation of the structural length of the pump body of the submersible screw pump.
Disclosure of Invention
In order to solve the problems, the invention provides an oil well pump device for oil gas exploitation and a method thereof, which effectively avoid the problems that oil extraction equipment with an oil pumping unit in the prior art needs a large amount of ground facilities, a driving device is huge, the consumption of steel is large, the oil well pump device can not be applied in the environments with smaller underground inclined well section positions such as an inclined well, a horizontal well, an S well and the like, the oil pumping unit falls off or is worn due to the eccentric wear phenomenon between the oil pumping unit and the pipe wall when the oil pumping unit moves up and down, and the energy utilization rate is lower, and also avoid the problem that the comprehensive efficiency is lower due to the serious wear between the oil pumping unit and the pipe wall when the oil pumping unit rotates in a screw pump system, in addition, the defects that the system for arranging the electric submersible pump in the underground is complex, the structure is long, the cost of ground high-voltage power supply equipment is high, the one-time investment of the equipment is large, the special requirement of the inclined shaft section cannot be met, and the special requirement of the inclined shaft section cannot be met in the oil-submersible screw pump are overcome; therefore, the oil well pump device for oil and gas exploitation, which has the advantages of good well condition adaptability, energy conservation, high efficiency, small volume and convenient installation, is provided.
In order to overcome the defects in the prior art, the invention provides a solution for an oil well pump device and a method thereof for oil and gas exploitation, which comprises the following steps:
a method of a pump assembly for hydrocarbon production, comprising:
the lower end of a ground Christmas tree 1-1 is connected with a sleeve 1-2, an oil pipe 1-3 is arranged in the sleeve 1-2, the annular space between the oil pipe 1-3 and the sleeve 1-2 is filled with well fluid 1-4, the lower end of the oil pipe 1-3 is connected with an oil well pump device 1-5 for oil and gas exploitation, the oil well pump device 1-5 for oil and gas exploitation, a matched submersible motor 1-6 and a protector 1-7 are installed at a preset position underground, the upper end of the oil well pump device 1-5 for oil and gas exploitation is connected with the oil pipe 1-3, the submersible motor 1-6 drives the oil well pump device 1-5 for oil and gas exploitation to rotate, the well fluid is sucked into the oil well pump device 1-5 for oil and gas exploitation from a liquid inlet 2-2 at the lower end of the oil well pump device for oil and gas exploitation, and then the oil is extruded by a cavity channel and is conveyed to a wellhead gathering and conveying pipeline 1-1 through a liquid outlet 2-1, in addition, a control cabinet 1-8 is additionally arranged, the rotating speed of a motor can be adjusted, and further, the flow of an oil well pump device for oil and gas exploitation can be adjusted, and in addition, the flow of the oil well pump device for oil and gas exploitation can also be changed by changing the length of the oil well pump device for oil and gas exploitation.
A birotor oil-well pump device for oil gas exploitation, this an oil-well pump device for oil gas exploitation is no crescent moon plate structure includes:
a pump cylinder 3-1, an outer rotor 3-2 and an inner rotor 3-3;
the pump barrel 3-1 is sleeved on the outer wall of the outer rotor 3-2;
the inner rotor 3-3 is positioned inside the outer rotor 3-2, and the inner rotor 3-3 is used for driving the outer rotor 3-2 to rotate in the same direction so as to complete well fluid conveying.
Furthermore, a liquid outlet 2-1 is formed in one side of the top end face of the pump barrel 3-1, a liquid inlet 2-2 is formed in the other side of the bottom end face of the pump barrel 3-1, and two opposite end faces are formed in one side of the top end face of the pump barrel 3-1 and one side of the bottom end face of the pump barrel 3-1.
Furthermore, a plurality of teeth are uniformly distributed on the inner wall surrounding the outer rotor 3-2, a plurality of teeth are uniformly distributed on the outer wall surrounding the inner rotor 3-3, the teeth on the outer rotor 3-2 and the teeth on the inner rotor 3-3 are meshed in a multi-tooth manner, the number of teeth of the outer rotor 3-2 and the number of teeth of the inner rotor 3-3 are different by one tooth, and the teeth of the inner rotor 3-3 and the teeth of the outer rotor 3-2 convey well liquid 1-4 in the rotating meshing process.
Furthermore, a plurality of cavities are formed in the process that the teeth of the inner rotor 3-3 and the teeth of the outer rotor 3-2 are meshed in a rotating mode, an oil suction cavity is formed by the cavities which are located on one side of the liquid inlet 2-2 and communicated with the liquid inlet 2-2, and an oil discharge cavity is formed by the cavities which are located on one side of the liquid discharge port 2-1 and communicated with the liquid discharge port 2-1.
Further, an oil-well pump device for oil gas exploitation, this an oil-well pump device for oil gas exploitation be the birotor oil-well pump device that has the crescent moon plate structure, and it includes: the pump comprises a pump cylinder 3-1, an outer rotor 3-2, an inner rotor 3-3 and a crescent plate 4-1;
the pump barrel 3-1 is sleeved on the outer wall of the outer rotor 3-2;
the inner rotor 3-3 is positioned inside the outer rotor 3-2, and the inner rotor 3-3 is used for driving the outer rotor 3-2 to rotate in the same direction so as to complete well fluid conveying;
the inner rotor and the outer rotor are meshed in a multi-tooth manner;
the crescent plate 4-1 is arranged on a pump cover, and the pump cover is the bottom or the top of the pump barrel.
The invention has the beneficial effects that:
(1) the invention has a double-rotor structure, compact structure, no stroke loss, high efficiency, low energy consumption and convenient installation.
(2) The invention has the advantages of compact structure, small volume, good well condition adaptability, convenient construction, simple operation and simple operation process, and is suitable for the well conditions of inclined wells, horizontal wells, S-wells and wells with smaller ground space positions.
(3) The oil well pump device for oil and gas exploitation has the advantages that the components are simple, the production and manufacturing cost is low, the design is safe and reasonable, according to different displacement volumes, the axial dimensions of the pump cylinder, the outer rotor and the inner rotor can be increased under the condition that the radial dimension is not changed, the infusion capacity of the device is improved, and the displacement volume can be changed by changing the rotating speed.
Drawings
Fig. 1 is a schematic diagram of the use structure of the oil well pump device for oil and gas production.
FIG. 2 is a schematic diagram of a pump cartridge with a liquid outlet and a liquid inlet according to the present invention.
Fig. 3 is a schematic cross-sectional view of the pump assembly for oil and gas production of the present invention without the crescent.
Fig. 4 is a schematic cross-sectional view of a pump assembly for oil and gas production with a crescent of the present invention.
Detailed Description
The invention will be further described with reference to the following figures and examples.
As shown in fig. 1-4, a method of a pump assembly for hydrocarbon production, comprising:
the lower end of a ground Christmas tree 1-1 is connected with a sleeve 1-2, an oil pipe 1-3 is arranged in the sleeve 1-2, the annular space between the oil pipe 1-3 and the sleeve 1-2 is filled with well fluid 1-4, the lower end of the oil pipe 1-3 is connected with an oil well pump device 1-5 for oil and gas exploitation, the oil well pump device 1-5 for oil and gas exploitation, a matched submersible motor 1-6 and a protector 1-7 are installed at a preset position underground, the upper end of the oil well pump device 1-5 for oil and gas exploitation is connected with the oil pipe 1-3, the submersible motor 1-6 drives the oil well pump device 1-5 for oil and gas exploitation to rotate, the well fluid is sucked into the oil well pump device 1-5 for oil and gas exploitation from a liquid inlet 2-2 at the lower end of the oil well pump device for oil and gas exploitation, and then the oil is extruded by a cavity channel and is conveyed to a wellhead gathering and conveying pipeline 1-1 through a liquid outlet 2-1, in addition, a control cabinet 1-8 is additionally arranged, the rotating speed of a motor can be adjusted, and further, the flow of an oil well pump device for oil and gas exploitation can be adjusted, and the flow of the oil well pump device for oil and gas exploitation can also be changed by changing the rotating speed of an oil submersible motor or changing the length of the oil well pump device for oil and gas exploitation.
A birotor oil-well pump device for oil gas exploitation, this an oil-well pump device for oil gas exploitation is no crescent moon plate structure includes: the outline of the oil well pump is a cylindrical pump cylinder 3-1, an outer rotor 3-2 and an inner rotor 3-3; the pump cylinder 3-1 is sleeved on the outer wall of the outer rotor 3-2 in an annular column shape; the inner rotor 3-3 is located inside the outer rotor 3-2, and the inner rotor 3-3 is used for driving the outer rotor 3-2 to rotate in the same direction so as to complete the conveying of oil gas well fluid. The pump cylinder 3-1, the outer rotor 3-2 and the inner rotor 3-3 are compact in structure and convenient to install. A through liquid discharge port 2-1 is formed in one side of the top end face of the pump barrel 3-1, a through liquid inlet 2-2 is formed in one side of the bottom end face of the pump barrel 3-1, and the top end face side of the pump barrel 3-1 and the bottom end face side of the pump barrel 3-1 are opposite sides, namely: if the top end face side of the pump barrel 3-1 is the left side, the bottom end face side of the pump barrel 3-1 is the right side, and if the top end face side of the pump barrel 3-1 is the right side, the bottom end face side of the pump barrel 3-1 is the left side. Therefore, oil gas well fluid can be sucked into the pump cylinder 3-1 from the bottom end of the pump cylinder 3-1 through the liquid inlet 2-2, and the oil gas well fluid can be conveyed to a gathering pipeline of an oil gas well head from the top end of the pump cylinder 3-1 through the liquid outlet 2-1. The liquid outlet 2-1 forms an oil discharge channel, and the liquid inlet 2-2 forms an oil inlet channel. The positions of the liquid outlet 2-1 and the liquid inlet 2-2 depend on the relative positions of the installation of the pump cylinder 3-1, the outer rotor 3-2 and the inner rotor 3-3 and the rotating direction of the inner rotor. A plurality of teeth are uniformly distributed on the inner wall surrounding the outer rotor 3-2, a plurality of teeth are uniformly distributed on the outer wall surrounding the inner rotor 3-3, a protrusion between two adjacent teeth forms a tooth, the teeth on the outer rotor 3-2 and the teeth on the inner rotor 3-3 are meshed in a multi-tooth manner, the number of teeth of the outer rotor 3-2 and the number of teeth of the inner rotor 3-3 are different by one tooth, and the number of teeth of the outer rotor 3-2 and the number of teeth of the inner rotor 3-3 are different by one tooth: the number of teeth of the outer rotor 3-2 is one more than that of the inner rotor 3-3, and the teeth of the inner rotor 3-3 and the teeth of the outer rotor 3-2 convey oil and gas well fluid 1-4 sucked into the pump cylinder 3-1 from the bottom end of the pump cylinder 3-1 in the rotating meshing process. Therefore, the structure for conveying the oil-gas well fluid 1-4 sucked into the pump cylinder 3-1 from the bottom end of the pump cylinder 3-1 in the rotating and meshing process through the teeth of the inner rotor 3-3 and the teeth of the outer rotor 3-2 is compact, and the oil-gas well fluid pump has the advantages of no stroke loss, high efficiency, low energy consumption and convenience in installation. The teeth of the inner rotor 3-3 and the teeth of the outer rotor 3-2 form a plurality of cavities in the rotating meshing process, the cavities which are positioned at one side of the liquid inlet 2-2 and communicated with the liquid inlet 2-2 form an oil suction cavity, and the cavities which are positioned at one side of the liquid outlet 2-1 and communicated with the liquid outlet 2-1 form an oil discharge cavity. When the outer rotor and the inner rotor rotate in the same direction, the oil suction cavity can suck oil and gas well fluid 1-4 through the fluid inlet 2-2, and the sucked oil and gas well fluid 1-4 is further conveyed through the oil discharge cavity and discharged through the fluid outlet 2-1.
Still another kind is used for the oil-gas extraction oil-well pump device, an oil-gas extraction oil-well pump device, this an oil-gas extraction oil-well pump device is the birotor oil-well pump device that has the crescent moon plate structure, and it includes: the pump comprises a pump cylinder 3-1, an outer rotor 3-2, an inner rotor 3-3 and a crescent plate 4-1; the pump barrel 3-1 is sleeved on the outer wall of the outer rotor 3-2; the inner rotor 3-3 is positioned inside the outer rotor 3-2, and the inner rotor 3-3 is used for driving the outer rotor 3-2 to rotate in the same direction so as to complete well fluid conveying; the inner rotor and the outer rotor are meshed in a multi-tooth manner; the crescent plate 4-1 is arranged on a pump cover, and the pump cover is the bottom or the top of the pump barrel. Thus, the oil suction cavity and the oil discharge cavity can be separated by the crescent plate.
And an eccentricity e is arranged between the center of the inner rotor and the center of the outer rotor, so that an oil suction cavity and an oil discharge cavity are formed more favorably.
In addition, the liquid inlet and the liquid outlet of the pump cylinder can be designed in a matching way according to the clockwise rotation of the matched submersible motor. Only the positions of the liquid inlet and the liquid outlet of the pump cylinder are adjusted in a matching way. Meanwhile, the oil gas well fluid discharge capacity and pressure can be different according to different operation sites. The oil well pump device for oil and gas exploitation can increase the axial dimensions of the pump cylinder, the outer rotor and the inner rotor under the condition that the radial dimension is not changed, and the infusion capacity of the device is improved. In addition, more specifically, the inner rotor and the outer rotor abut against one side, and the other side is separated by a crescent plate provided on the pump cover. The output end of the submersible motor is connected with the inner rotor in a rotating mode, then the outer rotor is driven to rotate in the same direction through the inner rotor under the rotation of the output end of the submersible motor, the inner rotor and the outer rotor are separated from each other at the liquid inlet to form negative pressure to suck well liquid, and the inner rotor and the outer rotor are continuously embedded and meshed at the liquid outlet to extrude and output the well liquid.
While the present invention has been described above in terms of procedures illustrated in embodiments, it will be understood by those skilled in the art that the present disclosure is not limited to the embodiments described above, and that various changes, alterations, and substitutions can be made without departing from the scope of the present invention.
Claims (6)
1. A method of pumping a pump assembly for oil and gas production, comprising:
the lower end of the ground Christmas tree is connected with a sleeve, an oil pipe is arranged in the sleeve, the annular space between the oil pipe and the sleeve is filled with well fluid, the lower end of the oil pipe is connected with an oil well pump device for oil and gas exploitation, the oil well pump device for oil and gas exploitation, the matched submersible motor and the protector are arranged at the preset position in the well together, the upper end of the oil well pump device for oil gas exploitation is connected with an oil pipe, the oil-submersible motor drives the oil well pump device for oil gas exploitation to rotate, well fluid is sucked into the oil well pump device for oil gas exploitation from a fluid inlet at the lower end of the oil well pump device for oil gas exploitation and is extruded by a cavity channel to be conveyed to a wellhead gathering and transportation pipeline through a fluid outlet, in addition, a control cabinet is additionally arranged to adjust the rotating speed of the motor so as to adjust the flow of an oil well pump device for oil and gas exploitation, in addition, the flow rate of the oil well pump device for oil and gas production can be changed by changing the length of the oil well pump device for oil and gas production.
2. The utility model provides an oil-well pump device for oil gas exploitation, its characterized in that, this an oil-well pump device for oil gas exploitation is the birotor oil-well pump device of no crescent moon plate structure, and it includes:
a pump cylinder, an outer rotor and an inner rotor;
the pump barrel is sleeved on the outer wall of the outer rotor;
the inner rotor is positioned in the outer rotor and used for driving the outer rotor to rotate in the same direction so as to finish well fluid conveying.
3. The oil well pump device for oil and gas exploitation according to claim 2, wherein a liquid discharge port is formed on one side of the top end face of the pump cylinder, a liquid inlet is formed on one side of the bottom end face of the pump cylinder, and the top end face of the pump cylinder and the bottom end face of the pump cylinder are opposite end faces.
4. The defueling pump device for oil and gas exploitation of claim 2, wherein a plurality of teeth are uniformly distributed around the inner wall of the outer rotor, a plurality of teeth are uniformly distributed around the outer wall of the inner rotor, the teeth on the outer rotor and the teeth on the inner rotor are meshed with each other in multiple teeth, the number of teeth of the outer rotor and the number of teeth of the inner rotor are different by one tooth, and the teeth of the inner rotor and the teeth of the outer rotor convey well fluid in a rotating meshing process.
5. The pump unit of claim 4, wherein the teeth of the inner rotor and the outer rotor form a plurality of channels during rotational engagement, the channel on the side of the fluid inlet opening communicating with the fluid inlet opening forming a fluid intake chamber, and the channel on the side of the fluid outlet opening communicating with the fluid outlet opening forming a fluid discharge chamber.
6. The utility model provides an oil-well pump device for oil gas exploitation, its characterized in that, this an oil-well pump device for oil gas exploitation is the birotor oil-well pump device that has the crescent moon plate structure, and it includes:
the pump cylinder, the outer rotor, the inner rotor and the crescent plate;
the pump barrel is sleeved on the outer wall of the outer rotor;
the inner rotor is positioned inside the outer rotor and used for driving the outer rotor to rotate in the same direction so as to finish the well fluid conveying;
the inner rotor and the outer rotor are meshed in a multi-tooth manner;
the crescent plate is arranged on the pump cover, and the pump cover is the bottom or the top of the pump barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335037.5A CN113550898A (en) | 2020-04-24 | 2020-04-24 | Oil-well pump device for oil and gas exploitation and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335037.5A CN113550898A (en) | 2020-04-24 | 2020-04-24 | Oil-well pump device for oil and gas exploitation and method thereof |
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| CN109681424A (en) * | 2018-11-21 | 2019-04-26 | 大连华科机械有限公司 | Multistage-combination gear oil-well pump |
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| CN2408267Y (en) * | 2000-03-06 | 2000-11-29 | 胡惊雷 | Variable hydraulic gear pump |
| US20020076344A1 (en) * | 2000-12-18 | 2002-06-20 | Clarke John M. | Variable displacement hydraulic gear pump |
| JP2003035278A (en) * | 2001-07-24 | 2003-02-07 | Honda Motor Co Ltd | Rotary oil pump |
| WO2006049500A1 (en) * | 2004-11-08 | 2006-05-11 | Tjerk Kingma | Gear pump with variable capacity |
| CN201133349Y (en) * | 2007-11-16 | 2008-10-15 | 长庆石油勘探局 | Numerical control oil-submersible electric pump |
| CN101344098A (en) * | 2008-08-18 | 2009-01-14 | 刘兴海 | Production method of water pump and water pump |
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