CN111734601B - Underground double-pump cylinder preset oil pump and oil pumping method - Google Patents
Underground double-pump cylinder preset oil pump and oil pumping method Download PDFInfo
- Publication number
- CN111734601B CN111734601B CN202010628365.4A CN202010628365A CN111734601B CN 111734601 B CN111734601 B CN 111734601B CN 202010628365 A CN202010628365 A CN 202010628365A CN 111734601 B CN111734601 B CN 111734601B
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- Prior art keywords
- pump
- oil
- pump cylinder
- cylinder
- pumping
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- 238000005086 pumping Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims description 15
- 239000003129 oil well Substances 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 83
- 238000001514 detection method Methods 0.000 description 9
- 238000007689 inspection Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
-
- 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
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention provides an underground double-pump cylinder preset oil pump and an oil pumping method, wherein the oil pump comprises an eccentric valve, a lower pump plunger, an upper pump plunger, a lower pump cylinder, an upper pump cylinder, an oil pipe and an oil pumping rod; the lower end of the oil pipe is sequentially connected with an upper pump cylinder and a lower pump cylinder, and the lower end of the upper pump cylinder is provided with an eccentric valve; the oil pumping rod is positioned in the oil pipe, the lower pump plunger is connected with the oil pumping rod, the lower pump plunger is positioned above the lower pump cylinder, and the upper pump plunger is connected with the oil pumping rod and positioned above the upper pump cylinder. The double pump cylinder preset oil pump is divided into an upper pump cylinder and a lower pump cylinder, the lower end of the upper pump cylinder is provided with an eccentric valve, the upper pump cylinder, the upper pump plunger and the oil pumping rod form an upper pump, namely an eccentric valve tube pump, after the eccentric valve tube pump pumps oil for a certain time to be worn, the oil pumping rod is lowered, so that the lower pump plunger enters the lower pump cylinder, and normal oil pumping is continued.
Description
Technical Field
The invention relates to an underground double-pump cylinder preset oil pump and an oil pumping method designed for a sucker rod pump oil production well of an oil field pumping unit, and belongs to the technical field of oil and gas industrial oil production processes.
Background
In recent years, crude oil price continues to run in low position, and the yield task is difficult to complete, and the oil field faces a plurality of difficulties and challenges. The well minor repair operation of the long-term celebration oil field in 2018 reaches 5 tens of thousands of times, wherein the pump leakage accounts for 10.79% of the well minor repair proportion. If the number of pump leakage wells can be reduced to a large extent, the number of pump detection wells per year can be reduced, and the pump detection period can be further prolonged. The deep well double-fixed valve pump with the Chinese patent publication number of CN2711410Y is characterized in that the lower part of the upper fixed valve is connected with the pump barrel through a joint, and the lower fixed valve which is the same as the upper fixed valve is connected with the upper fixed valve. However, the deep well double-fixed valve pump only has a sealing function, and oil extraction cannot be realized at the same time.
Disclosure of Invention
The invention provides an underground double-pump cylinder preset oil pump and an oil pumping method, aiming at solving the problems of short pump detection period and high pump detection operation times under the premise of not influencing oil pumping operation. The upper pump is provided with an eccentric valve, so that the upper pump becomes an eccentric valve tube pump, and after the eccentric valve tube pump is used for pumping oil for a certain period of time, the sucker rod is lowered, so that a lower pump plunger enters a lower pump cylinder, and normal oil pumping is continued. The invention can greatly reduce the number of pump leakage wells, reduce the number of annual pump inspection operations in the oil field and prolong the pump inspection period under the condition of not affecting the pumping rod to pump oil.
The invention adopts the technical scheme that:
The underground double-pump cylinder preset oil pump comprises an eccentric valve, a lower pump plunger, an upper pump plunger, a lower pump cylinder, an upper pump cylinder, an oil pipe and an oil pumping rod; the lower end of the oil pipe is sequentially connected with an upper pump cylinder and a lower pump cylinder, and the lower end of the upper pump cylinder is provided with an eccentric valve; the oil pumping rod is positioned in the oil pipe, the lower pump plunger is connected with the oil pumping rod, the lower pump plunger is positioned above the lower pump cylinder, and the upper pump plunger is connected with the oil pumping rod and positioned above the upper pump cylinder.
The upper pump cylinder and the lower pump cylinder have the same structure, and the lower pump cylinder is preset in the pit.
And a screen pipe is arranged at the lower end of the lower pump cylinder.
The lower end of the screen pipe is provided with a plug.
The upper pump plunger reciprocates along with the sucker rod.
The diameter of the lower pump plunger is matched with the inner diameter of the lower pump barrel.
The lower pump plunger is in contact connection with the inner wall of the lower pump cylinder.
The pumping method for presetting the oil well pump by the double pump barrels in the pit comprises the following specific steps:
When oil is pumped, liquid enters the oil pipe from the oil sleeve annulus, after the lower oil pipe is filled with the liquid, the upper pump plunger moves back and forth along with the sucker rod, and the liquid is lifted to the ground through the upper pump cylinder; after the upper pump cylinder is worn for a certain time, the sucker rod is lowered, the lower pump plunger enters the lower pump cylinder, and normal oil pumping is continued.
The beneficial effects of the invention are as follows:
According to the invention, through the transformation of waste materials in an oil field, a preset underground oil pump combination structure with upper and lower 2 tubular pumps connected in series is designed, the upper pump cylinder does not need to be repaired when the upper pump cylinder fails, and the lower pump cylinder can continuously work for pumping oil. The pump checking period of the oil well is prolonged, the pump checking work amount is reduced, and the exploitation cost is reduced.
The invention relates to an underground double-pump-barrel preset oil pump, which is characterized in that a double-pump technology is adopted, an existing conventional tubular pump in an oil field is utilized to be modified, one pump works normally, the other oil pump is placed in advance underground, and the oil pump continues to work after the upper pump is worn and lost, so that the pump detection period is prolonged, and the work workload is reduced.
Further description will be made below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
FIG. 2 is a schematic diagram of the structure of the present invention during pumping down operation.
In the drawings, reference numerals are: 1. an eccentric valve; 2. a pump plunger is arranged; 3. a pump plunger is arranged; 4. a pump cylinder is arranged; 5. a pump cylinder is arranged; 6. an oil pipe; 7. a sucker rod; 8. a screen pipe; 9. and (5) plugging.
Detailed Description
Example 1:
In order to solve the problems of short pump detection period and high pump detection operation times under the premise of not influencing the pumping operation in the prior art, the invention provides an underground double-pump-barrel preset oil pump and an oil pumping method, which are shown in fig. 1 and 2, wherein the double-pump-barrel preset oil pump is divided into an upper pump barrel and a lower pump barrel, and the upper pump barrel and the lower pump barrel share one oil pumping rod. The upper pump is provided with an eccentric valve, so that the upper pump becomes an eccentric valve tube pump, and after the eccentric valve tube pump is used for pumping oil for a certain period of time, the sucker rod is lowered, so that a lower pump plunger enters a lower pump cylinder, and normal oil pumping is continued. The invention can greatly reduce the number of pump leakage wells, reduce the number of annual pump inspection operations in the oil field and prolong the pump inspection period under the condition of not affecting the pumping rod to pump oil.
The underground double-pump-barrel preset oil pump comprises an eccentric valve 1, a lower pump plunger 2, an upper pump plunger 3, a lower pump barrel 4, an upper pump barrel 5, an oil pipe 6 and an oil pumping rod 7; the lower end of the oil pipe 6 is sequentially connected with an upper pump cylinder 5 and a lower pump cylinder 4, and the lower end of the upper pump cylinder 5 is provided with an eccentric valve 1; the oil pumping rod 7 is positioned in the oil pipe 6, the lower pump plunger 2 is connected with the oil pumping rod 7, the lower pump plunger 2 is positioned above the lower pump cylinder 4, and the upper pump plunger 3 is connected with the oil pumping rod 7 and is positioned above the upper pump cylinder 5.
As shown in fig. 1 and 2, the present invention operates: when oil is pumped, liquid enters the oil pipe 6 from the oil sleeve annulus, after the lower oil pipe is filled with the liquid, the upper pump plunger 3 reciprocates along with the sucker rod 7, and the liquid is lifted to the ground through the upper pump cylinder 5; after the upper pump cylinder 5 is worn for a certain time, the sucker rod 7 is lowered, the lower pump plunger 2 enters the lower pump cylinder 4, and normal oil pumping is continued.
The double-pump cylinder preset oil pump is divided into an upper pump cylinder and a lower pump cylinder, the lower end of the upper pump cylinder 5 is provided with an eccentric valve 1, the upper pump cylinder 5, the eccentric valve 1, an upper pump plunger 3 and an oil pumping rod 7 form an upper pump, and a lower pump cylinder 4, a lower pump plunger 2 and the oil pumping rod 7 form a lower pump; the upper and lower pumps share a sucker rod 7. The upper pump is provided with an eccentric valve 1, and becomes an eccentric valve tubular pump, the lower pump is a tubular pump, and after the eccentric valve tubular pump is used for pumping oil for a certain period of time, the sucker rod is lowered, so that the lower pump plunger 2 enters the lower pump cylinder 4, and normal oil pumping is continued. The invention adopts the double-pump technology, utilizes the conventional tube pump in the oil field to reform, wherein one pump works normally, the other pump is placed in advance in the pit, and works continuously after the upper pump is worn out and lost.
According to the invention, through the transformation of waste materials in an oil field, a preset underground oil pump combination structure with upper and lower 2 tubular pumps connected in series is designed, the upper pump barrel 5 does not need to be repaired when faults occur, and the lower pump barrel 4 can continuously work for pumping oil. The pump checking period of the oil well is prolonged, the pump checking work amount is reduced, and the exploitation cost is reduced.
Example 2:
Based on the embodiment 1, in this embodiment, it is preferable that the upper pump cylinder 5 has the same structure as the lower pump cylinder 4, and the lower pump cylinder 4 is preset downhole.
Preferably, the lower end of the lower pump cylinder 4 is provided with a screen pipe 8.
Preferably, the lower end of the screen pipe 8 is provided with a plug 9.
Preferably, the upper pump plunger 3 reciprocates along with the sucker rod 7.
Preferably, the diameter of the lower pump plunger 2 is matched with the inner diameter of the lower pump barrel 4.
Preferably, the lower pump plunger 2 is in contact connection with the inner wall of the lower pump cylinder 4.
The pumping method for presetting the oil well pump by the double pump barrels in the pit comprises the following specific steps:
When oil is pumped, liquid enters the oil pipe 6 from the oil sleeve annulus, after the lower oil pipe is filled with the liquid, the upper pump plunger 3 reciprocates along with the sucker rod 7, and the liquid is lifted to the ground through the upper pump cylinder 5; after the upper pump cylinder 5 is worn for a certain time, the sucker rod 7 is lowered, the lower pump plunger 2 enters the lower pump cylinder 4, and normal oil pumping is continued.
In the invention, the eccentric valve 1 is arranged at the lower end of the upper pump cylinder 5, namely, the part of a common tubular pump with a fixed valve fault in well workover is changed into the eccentric bottom valve 1, liquid enters an oil pipe 6 from an oil sleeve annulus during oil pumping, after the lower oil pipe is filled with the liquid, the upper pump plunger 3 reciprocates along with the oil pumping rod 7, and the liquid is lifted to the ground through the tubular pump with the upper eccentric valve. After the eccentric valve tube type pump is used for pumping oil for a certain period of time, the sucker rod 7 is lowered, the lower pump plunger 2 enters the lower pump cylinder 4, and normal oil pumping is continued.
The underground double-pump-barrel preset oil pump provided by the invention can reduce the number of pump leakage wells to a large extent, reduce the number of annual pump detection operation of an oil field and prolong the pump detection period.
The foregoing examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention, and all designs that are the same or similar to the present invention are within the scope of the present invention. The components and structures not specifically described in this embodiment are well known in the art and are not described in detail herein.
Claims (7)
1. An oil pumping method of an underground double-pump cylinder preset oil pump is characterized in that: the method comprises the steps of adopting an underground double-pump-barrel preset oil pump, wherein the underground double-pump-barrel preset oil pump comprises an eccentric valve (1), a lower pump plunger (2), an upper pump plunger (3), a lower pump barrel (4), an upper pump barrel (5), an oil pipe (6) and an oil pumping rod (7); the lower end of the oil pipe (6) is sequentially connected with an upper pump cylinder (5) and a lower pump cylinder (4), and an eccentric valve (1) is arranged at the lower end of the upper pump cylinder (5); the oil pumping rod (7) is positioned in the oil pipe (6), the lower pump plunger (2) is connected with the oil pumping rod (7), the lower pump plunger (2) is positioned above the lower pump cylinder (4), and the upper pump plunger (3) is connected with the oil pumping rod (7) and positioned above the upper pump cylinder (5);
the pumping method for presetting the oil well pump by the double pump barrels in the pit comprises the following specific steps: when oil is pumped, liquid enters the oil pipe (6) from the oil sleeve annulus, after the lower oil pipe is filled with the liquid, the upper pump plunger (3) moves back and forth along with the oil pumping rod (7), and the liquid is lifted to the ground through the upper pump cylinder (5); after the upper pump cylinder (5) is worn for a certain time, the sucker rod (7) is lowered, the lower pump plunger (2) enters the lower pump cylinder (4), and normal oil pumping is continued.
2. The method for pumping a downhole double pump cylinder preset oil pump according to claim 1, wherein the method comprises the following steps: the upper pump cylinder (5) and the lower pump cylinder (4) have the same structure, and the lower pump cylinder (4) is preset in the pit.
3. The method for pumping a downhole double pump cylinder preset oil pump according to claim 1, wherein the method comprises the following steps: the lower end of the lower pump cylinder (4) is provided with a screen pipe (8).
4. A method of pumping a downhole dual pump cartridge preset pump according to claim 3, wherein: the lower end of the screen pipe (8) is provided with a plug (9).
5. The method for pumping a downhole double pump cylinder preset oil pump according to claim 1, wherein the method comprises the following steps: the upper pump plunger (3) moves back and forth along with the sucker rod (7).
6. The method for pumping a downhole double pump cylinder preset oil pump according to claim 1, wherein the method comprises the following steps: the diameter of the lower pump plunger (2) is matched with the inner diameter of the lower pump barrel (4).
7. The method for pumping a downhole double pump cylinder preset oil pump according to claim 1, wherein the method comprises the following steps: the lower pump plunger (2) is in contact connection with the inner wall of the lower pump cylinder (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010628365.4A CN111734601B (en) | 2020-07-02 | 2020-07-02 | Underground double-pump cylinder preset oil pump and oil pumping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010628365.4A CN111734601B (en) | 2020-07-02 | 2020-07-02 | Underground double-pump cylinder preset oil pump and oil pumping method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111734601A CN111734601A (en) | 2020-10-02 |
| CN111734601B true CN111734601B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010628365.4A Active CN111734601B (en) | 2020-07-02 | 2020-07-02 | Underground double-pump cylinder preset oil pump and oil pumping method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2413059Y (en) * | 2000-03-10 | 2001-01-03 | 大庆油田有限责任公司试油试采分公司 | Double-pump composite selective zone production device |
| WO2009092189A1 (en) * | 2007-12-24 | 2009-07-30 | Heilongjiang Jiaxin Petrochemical Machinery Co., Ltd. | External valve type hydraulic self-sealing piston oil well pump |
| CN201554632U (en) * | 2009-10-10 | 2010-08-18 | 中船重工中南装备有限责任公司 | Eccentric gap bridge separate-pumping mixed-recovery oil well pump |
| CN201908814U (en) * | 2010-06-09 | 2011-07-27 | 徐承韬 | Two-stage pump cylinder and two-stage plunger piston combined pump cylinder pipe type pump |
| CN202645953U (en) * | 2012-05-14 | 2013-01-02 | 中国石油化工股份有限公司 | Immersion rod type heavy oil pump |
| CN210152618U (en) * | 2019-03-25 | 2020-03-17 | 中国石油化工股份有限公司 | Double-pump barrel tubular pump take-over production string |
| CN212429122U (en) * | 2020-07-02 | 2021-01-29 | 中国石油天然气股份有限公司 | Underground double-pump barrel preset oil well pump |
-
2020
- 2020-07-02 CN CN202010628365.4A patent/CN111734601B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2413059Y (en) * | 2000-03-10 | 2001-01-03 | 大庆油田有限责任公司试油试采分公司 | Double-pump composite selective zone production device |
| WO2009092189A1 (en) * | 2007-12-24 | 2009-07-30 | Heilongjiang Jiaxin Petrochemical Machinery Co., Ltd. | External valve type hydraulic self-sealing piston oil well pump |
| CN201554632U (en) * | 2009-10-10 | 2010-08-18 | 中船重工中南装备有限责任公司 | Eccentric gap bridge separate-pumping mixed-recovery oil well pump |
| CN201908814U (en) * | 2010-06-09 | 2011-07-27 | 徐承韬 | Two-stage pump cylinder and two-stage plunger piston combined pump cylinder pipe type pump |
| CN202645953U (en) * | 2012-05-14 | 2013-01-02 | 中国石油化工股份有限公司 | Immersion rod type heavy oil pump |
| CN210152618U (en) * | 2019-03-25 | 2020-03-17 | 中国石油化工股份有限公司 | Double-pump barrel tubular pump take-over production string |
| CN212429122U (en) * | 2020-07-02 | 2021-01-29 | 中国石油天然气股份有限公司 | Underground double-pump barrel preset oil well pump |
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| CN111734601A (en) | 2020-10-02 |
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