CN111021999B - Liquid drainage and gas production integrated pipe column - Google Patents
Liquid drainage and gas production integrated pipe column Download PDFInfo
- Publication number
- CN111021999B CN111021999B CN202010165072.7A CN202010165072A CN111021999B CN 111021999 B CN111021999 B CN 111021999B CN 202010165072 A CN202010165072 A CN 202010165072A CN 111021999 B CN111021999 B CN 111021999B
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- China
- Prior art keywords
- gas
- liquid
- sucker rod
- oil
- hollow sucker
- Prior art date
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- 239000007788 liquid Substances 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 13
- 239000003129 oil well Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000926 separation method 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
- 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
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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
- 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
-
- 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
- F04B53/02—Packing the free space between cylinders and pistons
-
- 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
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
-
- 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
- F04B53/143—Sealing provided on the piston
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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to an integrated production string for liquid drainage and gas production in an oil field gas well. The invention mainly solves the problems of high production cost, high equipment cost, long recovery production period after flooding and the like. The liquid drainage and gas production integrated pipe column mainly comprises: plunger, pump barrel, packer, etc. After the operation construction is completed, firstly, the hollow rod is lifted and lowered, gas-liquid mixture produced by a stratum completely enters the oil inlet valve under the obstruction of the packer, the equivalent density of the gas-liquid mixture in the hollow rod is gradually reduced along with the reduction of the produced liquid proportion and the increase of the gas proportion, when the bottom pressure of the hollow rod is smaller than the bottom pressure of the well, the stratum pressure can push the gas-liquid mixture of the hollow rod to rise to the ground from the stratum, the produced liquid at the well bottom can be continuously pushed to the ground by a produced gas source according to the gas lift principle, the produced liquid enters a gas transmission flow through a hose, and the hollow rod is lowered to the bottom of the pump barrel, so that normal production can be put into practice. The invention has the advantages that: simple combination, convenient construction and low cost.
Description
Technical Field
The invention relates to an oil field downhole production string, in particular to an integrated production string capable of draining liquid and producing gas in a gas well.
Background
In the gas production process, because the stratum contains light oil or stratum water, a large amount of liquid at the bottom of the well is accumulated, the yield of gas is influenced if the liquid is light, and the gas well is stopped if the liquid is heavy. The technical measures adopted on site at present are generally poor in effect or too high in cost, and the common method is that a pumping unit is installed at a wellhead, a common production string for oil extraction is generally adopted underground, when liquid is less, gas production is not influenced, the pumping unit is in a pumping stop state, when the liquid is more and the gas yield is reduced, the pumping unit is started to pump liquid until the gas recovery capacity. Almost all liquid drainage and gas production schemes on the site require ground equipment or energy supply, Chinese patent 201910428307.4 discloses a technology of 'gas lift suitable for water drainage and gas production of a gas well in the whole life cycle', and similarly, the technology needs to provide complicated electrical control and a high-pressure gas source, so that the use and maintenance cost of the technology is high.
Disclosure of Invention
The invention aims to provide a gas well production system which can overcome the defects of the prior art, and can continuously lift the liquid produced by the stratum to the ground by using energy on the premise of not depending on external energy, so that the maintenance-free continuous production of the whole period of the gas well is realized.
The technical scheme adopted by the invention is as follows: the liquid drainage and gas production integrated pipe column mainly comprises: the hollow rod sealer, the hose, the oil pipe, the hollow rod, the plunger, the pump barrel, the packer, the tail pipe and the like. The hose, the hollow sucker rod and the plunger are sequentially connected, the oil pipe, the pump cylinder, the oil inlet valve, the packer and the tail pipe are sequentially connected, the plunger and the hollow rod form a unique liquid flow channel and are isolated from an annular space between the hollow rod and the oil pipe, the plunger can reciprocate up and down in the pump cylinder, and the pump cylinder and the plunger form dynamic seal. The working process of the invention is as follows: after the job execution is accomplished, at first will lift down hollow rod with the workover rig and realize the flowing back, when lifting hollow rod: the oil inlet valve is opened and the oil outlet valve is closed, and the gas-liquid mixture at the bottom of the well enters the pump barrel; when the hollow rod is lowered: the oil feed valve is closed and the oil outlet valve is opened, the gas-liquid mixture in the pump barrel pushes up the oil outlet valve and is arranged to ground through hollow sucker rod, the gas-liquid mixture of stratum output all gets into the oil feed valve under the separation of packer, increase along with the reduction gas proportion of output liquid proportion, the equivalent density of gas-liquid mixture also progressively reduces in the hollow pole, form bubble flow and section plug flow, when hollow pole bottom pressure is less than bottom hole pressure, stratum pressure can promote the gas-liquid mixture of hollow pole and rise to ground by the stratum, in case this process takes place, the output liquid in the bottom hole can rely on the gas lift principle to be pushed to ground by the output air supply source is continuous. At the moment, the hollow rod is lowered to the bottom of the pump barrel, the annular space between the hollow rod and the oil pipe is completely sealed, and a gas-liquid mixture produced by the stratum enters a production flow through the oil inlet valve, the oil outlet valve, the hollow rod and the hose.
Preferably, the tail pipe of the liquid drainage and gas production integrated pipe column is connected with a packer.
Preferably, the liquid drainage and gas production integrated tubular column is provided with a sealing ring on a plunger body.
Preferably, the liquid drainage and gas production integrated tubular column is characterized in that a plunger body of the liquid drainage and gas production integrated tubular column is directly connected with a hollow rod.
Preferably, the lower end of the plunger of the liquid drainage and gas production integrated tubular column is provided with a sealing ring, and the bottom of the pump cylinder is provided with a sealing seat matched with the sealing ring to form an insertion type seal. Of course, an insert-type hard seal is also an embodiment of the present invention. The purpose that plunger or lower extreme were equipped with the sealing washer is in order to realize the airtight between plunger and the pump barrel, and the production fluid can not cluster into the annular space between hollow rod and the oil pipe through the sealed clearance between pump barrel and the plunger.
The invention has the advantages that: the underground pipe column has simple combination, convenient site construction, low operation cost and less equipment investment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic diagram of the plunger.
Fig. 3 is a schematic structural view of another embodiment plug-in seal.
In the figure: 1. a hose; 2. a hollow rod sealer; 3. a hollow shaft; 4. an oil pipe; 5. a plunger; 6. an oil outlet valve; 7. a pump barrel; 8. an oil inlet valve; 9. a tail pipe; 10. a packer; 11. and (5) sealing rings.
Detailed Description
The structure and operation of the present invention will be further explained with reference to the accompanying drawings.
In fig. 1, the hose 1 can be a multi-layer braided high-pressure hose for hydraulic use with a pressure of more than 20MPa, the inner diameter is selected and matched according to the gas production rate, the hollow rod sealer 2 can be a common polished rod sealer, the hollow rod 3 can be a 36mm, 42mm or small-diameter oil pipe which is common on site according to the gas production rate, and the oil pipe 4 can be an 27/8' common flat oil pipe; the plunger 5 body can adopt the body of ordinary plunger, the groove of placing the sealing washer will be opened in the body outside, can adopt the mode of lug connection also can adopt the additional dress change lock joint at the upper end of plunger 5 body and hollow rod 3, delivery valve 6 just adopts the delivery valve of ordinary oil-well pump, pump barrel 7 can adopt the pump barrel of ordinary oil-well pump, delivery valve 8 can adopt the delivery valve of ordinary oil-well pump, tail pipe 9 preferably adopts the oil pipe of minor diameter, can increase drainage ability, packer 10 can adopt cup packer or compression packer, the sealing washer 11 shown in fig. 2, fig. 3 can adopt "O" or "Y" type sealing washer, open the seal groove that suits with it on the plunger.
Claims (3)
1. The liquid drainage and gas production integrated pipe column is characterized by comprising a hose, a hollow sucker rod sealer, a hollow sucker rod, an oil pipe and an oil pump, wherein the hose, the hollow sucker rod and a plunger body are sequentially connected; after the job execution is accomplished, at first will lift, transfer hollow sucker rod with the workover rig and realize the flowing back, when lifting hollow sucker rod: the oil inlet valve is opened and the oil outlet valve is closed, and the gas-liquid mixture at the bottom of the well enters the pump cylinder of the oil well pump; when the hollow sucker rod is lowered: the oil inlet valve is closed, the oil outlet valve is opened, the gas-liquid mixture in the pump cylinder of the oil well pump pushes the oil outlet valve to be discharged to the ground through the hollow sucker rod, the gas-liquid mixture produced by the stratum completely enters the oil inlet valve under the obstruction of the packer, the equivalent density of the gas-liquid mixture in the hollow sucker rod is gradually reduced along with the increase of the gas proportion when the proportion of the produced liquid is reduced, bubble flow and slug flow are formed, when the bottom pressure of the hollow sucker rod is smaller than the bottom pressure of the well, the stratum pressure can push the gas-liquid mixture of the hollow sucker rod to rise to the ground from the stratum, once the process occurs, the produced liquid at the well bottom can be continuously pushed to the ground by; at the moment, the hollow sucker rod is lowered to the bottom of the pump cylinder of the oil well pump, the annular space between the hollow sucker rod and the oil pipe is completely sealed, and a gas-liquid mixture produced by the stratum enters a production flow through the oil inlet valve, the oil outlet valve, the hollow sucker rod and the hose.
2. The liquid drainage gas production method according to claim 1, characterized in that: the plunger body is provided with a sealing ring.
3. The liquid drainage gas production method according to claim 1, characterized in that: the lower end of the plunger body is provided with a sealing ring, and the bottom of the pump cylinder of the oil well pump is provided with a sealing seat matched with the sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010165072.7A CN111021999B (en) | 2020-03-11 | 2020-03-11 | Liquid drainage and gas production integrated pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010165072.7A CN111021999B (en) | 2020-03-11 | 2020-03-11 | Liquid drainage and gas production integrated pipe column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111021999A CN111021999A (en) | 2020-04-17 |
| CN111021999B true CN111021999B (en) | 2020-07-24 |
Family
ID=70199336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010165072.7A Active CN111021999B (en) | 2020-03-11 | 2020-03-11 | Liquid drainage and gas production integrated pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111021999B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2630488Y (en) * | 2003-06-18 | 2004-08-04 | 中国石油天然气股份有限公司 | Float-ring pump hollow sucker rod circulating sand-removing oil-producing apparatus |
| CN2804433Y (en) * | 2005-07-02 | 2006-08-09 | 史有刚 | Soft sealed telescopiform, anti-eccentric grinding high viscosity oil pump |
| CN104763621A (en) * | 2015-03-27 | 2015-07-08 | 中联煤层气有限责任公司 | Sucker-rod pump device for coal seam gas exploitation |
| CN207093047U (en) * | 2017-07-05 | 2018-03-13 | 中国石油天然气股份有限公司 | A kind of negative pressure gas-lift production tubing string |
| CN209179736U (en) * | 2018-10-25 | 2019-07-30 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of coal bed gas ground vertical well is anti-to spit sand device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201184171Y (en) * | 2008-04-25 | 2009-01-21 | 刘庆敏 | Bias-wearing-proof pumping unit |
| US8192181B2 (en) * | 2009-02-24 | 2012-06-05 | Thompson Pump Company | Double standing valve sucker rod pump |
-
2020
- 2020-03-11 CN CN202010165072.7A patent/CN111021999B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2630488Y (en) * | 2003-06-18 | 2004-08-04 | 中国石油天然气股份有限公司 | Float-ring pump hollow sucker rod circulating sand-removing oil-producing apparatus |
| CN2804433Y (en) * | 2005-07-02 | 2006-08-09 | 史有刚 | Soft sealed telescopiform, anti-eccentric grinding high viscosity oil pump |
| CN104763621A (en) * | 2015-03-27 | 2015-07-08 | 中联煤层气有限责任公司 | Sucker-rod pump device for coal seam gas exploitation |
| CN207093047U (en) * | 2017-07-05 | 2018-03-13 | 中国石油天然气股份有限公司 | A kind of negative pressure gas-lift production tubing string |
| CN209179736U (en) * | 2018-10-25 | 2019-07-30 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of coal bed gas ground vertical well is anti-to spit sand device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111021999A (en) | 2020-04-17 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhu Hongtao Inventor after: Liu Jiayi Inventor after: Zhao Jun Inventor after: Chen Shengming Inventor after: Li Zhenfeng Inventor after: Zhu Rumin Inventor after: Hao Yanrui Inventor after: He Dongxu Inventor after: He Haifeng Inventor after: Nie Kouzhen Inventor after: Meng Xiaofeng Inventor after: Wang Rongjie Inventor after: Jia Zilong Inventor after: Zhang Jun Inventor after: Zhao Yunzhong Inventor before: Zhu Hongtao Inventor before: Zhao Jun Inventor before: Chen Shengming Inventor before: Li Zhenfeng Inventor before: Zhu Rumin Inventor before: Hao Yanrui Inventor before: He Haifeng Inventor before: He Dongxu Inventor before: Nie Kouzhen Inventor before: Meng Xiaofeng Inventor before: Wang Rongjie Inventor before: Jia Zilong Inventor before: Zhang Jun Inventor before: Zhao Yunzhong Inventor before: Liu Jiayi |
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| CB03 | Change of inventor or designer information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhu Hongtao Inventor after: Liu Jiayi Inventor after: Zhao Jun Inventor after: Chen Shengming Inventor after: Li Zhenfeng Inventor after: Zhu Rumin Inventor after: Hao Yanrui Inventor after: Liu Xingwen Inventor after: He Dongxu Inventor after: He Haifeng Inventor after: Nie Kouzhen Inventor after: Meng Xiaofeng Inventor after: Wang Rongjie Inventor after: Jia Zilong Inventor after: Zhang Jun Inventor after: Zhao Yunzhong Inventor before: Zhu Hongtao Inventor before: Liu Jiayi Inventor before: Zhao Jun Inventor before: Chen Shengming Inventor before: Li Zhenfeng Inventor before: Zhu Rumin Inventor before: Hao Yanrui Inventor before: He Dongxu Inventor before: He Haifeng Inventor before: Nie Kouzhen Inventor before: Meng Xiaofeng Inventor before: Wang Rongjie Inventor before: Jia Zilong Inventor before: Zhang Jun Inventor before: Zhao Yunzhong |
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