CN110318712B - Underground hydraulic motor special for oil extraction - Google Patents
Underground hydraulic motor special for oil extraction Download PDFInfo
- Publication number
- CN110318712B CN110318712B CN201910729562.2A CN201910729562A CN110318712B CN 110318712 B CN110318712 B CN 110318712B CN 201910729562 A CN201910729562 A CN 201910729562A CN 110318712 B CN110318712 B CN 110318712B
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- Prior art keywords
- piston rod
- hollow piston
- cylinder
- hydraulic cylinder
- seal cover
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- 238000000605 extraction Methods 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 230000001174 ascending effect Effects 0.000 claims abstract description 4
- 238000011084 recovery Methods 0.000 claims abstract description 3
- 210000002445 nipple Anatomy 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 10
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- E21B43/129—Adaptations of down-hole pump systems powered by fluid supplied from outside the borehole
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
- Actuator (AREA)
Abstract
The invention relates to drainage equipment, in particular to a downhole hydraulic motor special for oil extraction of a highly deviated well and a horizontal well. The utility model provides a special hydraulic motor in pit of oil recovery, including hydraulic cylinder, hydraulic cylinder upper end is opened there is the liquid ascending channel of producing, hydraulic cylinder upper and lower both ends set up seal cover and lower seal cover respectively, set up the double-channel plunger in the cylinder, double-channel plunger includes the plunger main part, go up hollow piston rod and lower hollow piston rod, the plunger main part is opened there is high pressure power fluid passageway and low pressure liquid passageway of producing, high pressure power fluid passageway upper end intercommunication goes up hollow piston rod, it is located the seal cover to go up hollow piston rod upper portion, low pressure liquid passageway lower extreme intercommunication hollow piston rod down, hollow piston rod lower part passes down the seal cover down. The invention has simple structure, low energy consumption and high extraction efficiency, and is suitable for rodless oil extraction operation of highly inclined wells and horizontal wells.
Description
Technical Field
The invention relates to drainage equipment, in particular to a downhole hydraulic motor special for oil extraction of a highly deviated well and a horizontal well.
Background
In the processes of oilfield production and coalbed methane exploitation, the development of drilling and drainage technologies is accompanied by the increase of highly deviated wells and horizontal wells. The traditional rod drainage equipment has a plurality of new problems in the production process, such as broken and broken sucker rods caused by eccentric wear, scrapped oil pipes caused by eccentric wear, and shortened pump detection period; although various rodless drainage and extraction devices such as an electric submersible screw pump, an electric submersible pump, a hydraulic piston pump and a jet pump are developed at home and abroad, the drainage and extraction devices are not satisfactory at present, are difficult to break through technically, have defects which are difficult to overcome by the drainage and extraction device, and have no practicability.
Disclosure of Invention
The invention aims to provide the underground hydraulic motor special for oil extraction, which has the advantages of simple structure, low energy consumption and high extraction efficiency and realizes rodless extraction.
The technical scheme of the invention is as follows:
the utility model provides a special hydraulic motor in pit of oil recovery, including hydraulic cylinder, hydraulic cylinder upper end is opened there is the liquid ascending channel of producing, hydraulic cylinder upper and lower both ends set up seal cover and lower seal cover respectively, set up the double-channel plunger in the cylinder, double-channel plunger includes the plunger main part, go up hollow piston rod and lower hollow piston rod, the plunger main part is opened there is high pressure power fluid passageway and low pressure liquid passageway of producing, high pressure power fluid passageway upper end intercommunication goes up hollow piston rod, it is located the seal cover to go up hollow piston rod upper portion, low pressure liquid passageway lower extreme intercommunication hollow piston rod down, lower hollow piston rod lower part passes lower seal cover, go up hollow piston rod's diameter is less than the diameter of hollow piston rod down.
Specifically, the oil pipe nipple joint is gone up through the cylinder top connection in the hydraulic pressure cylinder upper end, and cylinder top connection center department sets up the seal cover, and it makes hydraulic cylinder and last oil pipe nipple joint intercommunication to open on the cylinder top connection to have a production liquid ascending channel, and the hydraulic cylinder lower extreme is connected down the oil pipe nipple joint through the cylinder lower junction, and cylinder lower junction center department sets up down the seal cover.
Specifically, the lower end of the lower hollow piston rod is connected with a hollow pull rod joint, a hole is formed in the side edge of the hollow pull rod joint, and the hole is communicated with the inside of the lower hollow piston rod and the inside of the short joint of the lower oil pipe.
Specifically, the longitudinal axes of the upper hollow piston rod, the piston body and the lower hollow piston rod are on the same straight line.
The lower end of a double-channel plunger is connected with a plunger of an oil pump, and the plunger of the double-channel plunger is driven to ascend by power fluid; the hydraulic feedback force drives the double-channel plunger to move downwards, so that rodless drainage and extraction are realized, and the eccentric wear problem of the oil rod lifting process is thoroughly eliminated; the invention has simple structure, low energy consumption and high extraction efficiency, and is suitable for rodless oil extraction operation of highly inclined wells and horizontal wells.
Drawings
Fig. 1 is a schematic structural view of the present invention.
1, an upper oil pipe nipple 2, an upper cylinder joint 4 of a sealing sleeve 3, a hydraulic cylinder 6 of a hollow piston rod 5, a plunger main body 7 of a high-pressure power fluid channel 8, a lower hollow piston rod 10, a lower cylinder joint 12 of a sealing sleeve 11, a lower oil pipe nipple 13, a hollow pull rod joint 14, a lower cylinder annulus 15 and an upper cylinder annulus are arranged.
Detailed Description
The underground hydraulic motor special for oil extraction comprises a hydraulic cylinder 5, wherein the upper end of the hydraulic cylinder 5 is connected with an upper oil pipe nipple through a cylinder upper joint 3, the upper oil pipe nipple 1 is used for being connected with an oil well oil pipe, an upper sealing sleeve 2 is arranged at the center of the cylinder upper joint 3, the upper end of the upper sealing sleeve 2 is connected with the lower end of an oil well concentric small oil pipe, and the upper end of the oil well concentric small oil pipe is connected with ground power equipment; the cylinder barrel upper joint 3 is provided with an upward passage for produced liquid so that the hydraulic cylinder barrel 5 is communicated with the upper oil pipe nipple 1, the lower end of the hydraulic cylinder barrel 5 is connected with a lower oil pipe nipple through a cylinder barrel lower joint 11, the lower oil pipe nipple 12 is connected with a pump barrel of an oil pump, and a lower sealing sleeve 10 is arranged at the center of the cylinder barrel lower joint 11.
The double-flow-passage plunger is arranged in the cylinder barrel, the double-flow-passage plunger comprises a plunger main body 6, an upper hollow piston rod 4 and a lower hollow piston rod 9, an upper cylinder barrel annulus 15 is formed above the plunger main body 6, a lower cylinder barrel annulus 14 is formed below the plunger main body 6, the diameter of the upper hollow piston rod 4 is smaller than that of the lower hollow piston rod 9, the plunger main body 6 is provided with a high-pressure power fluid passage 7 and a low-pressure product fluid passage 8, the upper end of the high-pressure power fluid passage 7 is communicated with the upper hollow piston rod 4, the upper part of the upper hollow piston rod 4 is positioned in the upper sealing sleeve 2, the lower end of the low-pressure product fluid passage 8 is communicated with the lower hollow piston rod 9, the lower part of the lower hollow piston rod 9 passes through the lower sealing sleeve 10, the lower end of the lower hollow piston rod 9 is connected with a hollow pull rod joint 13, a hole is formed in the side edge of the hollow pull rod joint 13, the hole is communicated with the inside of the lower hollow piston rod 9 and the lower oil pipe nipple 12, and the lower end of the hollow pull rod joint 13 is connected with the oil pump plunger.
The working process of the invention is as follows: during the upward stroke, the power fluid sequentially passes through the upper sealing sleeve 2, the upper hollow piston rod 4 and the high-pressure power fluid channel 7 of the plunger main body 6, enters the lower annular space 14 of the cylinder barrel, pushes the plunger main body 6 to move upwards, and drives the hollow pull rod joint 13 and the oil pump plunger to move upwards; during the downstroke, ground power hydraulic pressure reduces, annular output liquid and concentric little oil pipe power hydraulic pressure are basically balanced, because the annular space area of annular space 14 is greater than the annular space area of annular space 15 on the cylinder under the cylinder, plunger main part 6 moves down under the effect of hydraulic feedback force, drag plunger main part 6 and descend, through hollow pull rod joint 13, drive the oil-well pump plunger and descend, the output liquid passes through hollow pull rod joint 13, lower hollow piston rod 9, the low pressure of plunger main part 6 produces liquid runner 8, get into plunger main part 6 upper portion, through oil pipe and concentric little oil pipe annular space, lift to ground.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (2)
1. The utility model provides a special hydraulic motor in pit of oil recovery, a serial communication port, including hydraulic cylinder, hydraulic cylinder upper end is opened there is the output liquid up-going passageway, hydraulic cylinder upper and lower both ends set up seal cover and lower seal cover respectively, set up double-flow way plunger in the cylinder, double-flow way plunger includes the plunger main part, go up hollow piston rod and lower hollow piston rod, go up hollow piston rod, the longitudinal axis of the hollow piston rod is on same straight line with lower hollow piston rod, the plunger main part is opened there is high-pressure power fluid passageway and low pressure output liquid runner, high-pressure power fluid passageway upper end intercommunication goes up hollow piston rod, go up hollow piston rod upper portion and be located the seal cover, low pressure output liquid runner lower extreme intercommunication hollow piston rod, lower hollow piston rod lower part passes lower seal cover, go up hollow piston rod's diameter is less than the diameter of lower hollow piston rod, hollow piston rod lower extreme connection hollow pull rod connects, hollow pull rod connects the side and opens porose, the hole is inside hollow piston rod and lower oil pipe short circuit is inside down in the hole intercommunication.
2. The underground hydraulic motor special for oil extraction according to claim 1, wherein the upper end of the hydraulic cylinder is connected with an upper oil pipe nipple through a cylinder upper joint, an upper sealing sleeve is arranged at the center of the cylinder upper joint, an output liquid ascending channel is arranged on the cylinder upper joint to enable the hydraulic cylinder to be communicated with the upper oil pipe nipple in a short circuit manner, the lower end of the hydraulic cylinder is connected with a lower oil pipe nipple through a cylinder lower joint, and a lower sealing sleeve is arranged at the center of the cylinder lower joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729562.2A CN110318712B (en) | 2019-08-08 | 2019-08-08 | Underground hydraulic motor special for oil extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729562.2A CN110318712B (en) | 2019-08-08 | 2019-08-08 | Underground hydraulic motor special for oil extraction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110318712A CN110318712A (en) | 2019-10-11 |
| CN110318712B true CN110318712B (en) | 2024-03-15 |
Family
ID=68125696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910729562.2A Active CN110318712B (en) | 2019-08-08 | 2019-08-08 | Underground hydraulic motor special for oil extraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110318712B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3850237A (en) * | 1971-11-01 | 1974-11-26 | Vetco Offshore Ind Inc | Mudline emergency shutoff for offshore wells |
| CN2597709Y (en) * | 2003-02-17 | 2004-01-07 | 北京迪威尔石油天然气技术开发有限公司 | Hydraulic oil pump |
| CN1601083A (en) * | 2004-07-30 | 2005-03-30 | 中国石化胜利油田有限公司采油工艺研究院 | Oil production method with no pole and oil production system |
| CN201078328Y (en) * | 2007-01-04 | 2008-06-25 | 崔自力 | Differential type down-hole hydraulic oil well pump |
| CN101216028A (en) * | 2007-12-27 | 2008-07-09 | 国营第三八八厂 | Hydraulic power oil pump |
| CN202926745U (en) * | 2012-11-15 | 2013-05-08 | 北京迪威尔石油天然气技术开发有限公司 | Movable-barrel hydraulic power cylinder |
| CN103821703A (en) * | 2014-01-06 | 2014-05-28 | 北京万普瑞能源技术有限公司 | Underground hydraulic piston pump |
| CN104653541A (en) * | 2015-03-11 | 2015-05-27 | 北京双良石油技术有限公司 | Mine water media hydraulic cylinder and continuous oil extraction device |
| CN206681957U (en) * | 2017-04-26 | 2017-11-28 | 淄博东华石油技术有限公司 | Three plunger mining pumps |
| CN107630685A (en) * | 2017-09-20 | 2018-01-26 | 中国石油天然气股份有限公司 | A kind of rod-pumped well Rodless oil extraction tubing string and method |
| CN108361182A (en) * | 2018-01-08 | 2018-08-03 | 诸暨市超前泵业科技有限公司 | Underground reciprocating formula rodless pump |
| CN210598927U (en) * | 2019-08-08 | 2020-05-22 | 淄博东华石油技术有限公司 | Special downhole hydraulic motor for oil production |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060000616A1 (en) * | 2004-07-02 | 2006-01-05 | Joe Crawford | Hydraulic downhole oil recovery system |
-
2019
- 2019-08-08 CN CN201910729562.2A patent/CN110318712B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3850237A (en) * | 1971-11-01 | 1974-11-26 | Vetco Offshore Ind Inc | Mudline emergency shutoff for offshore wells |
| CN2597709Y (en) * | 2003-02-17 | 2004-01-07 | 北京迪威尔石油天然气技术开发有限公司 | Hydraulic oil pump |
| CN1601083A (en) * | 2004-07-30 | 2005-03-30 | 中国石化胜利油田有限公司采油工艺研究院 | Oil production method with no pole and oil production system |
| CN201078328Y (en) * | 2007-01-04 | 2008-06-25 | 崔自力 | Differential type down-hole hydraulic oil well pump |
| CN101216028A (en) * | 2007-12-27 | 2008-07-09 | 国营第三八八厂 | Hydraulic power oil pump |
| CN202926745U (en) * | 2012-11-15 | 2013-05-08 | 北京迪威尔石油天然气技术开发有限公司 | Movable-barrel hydraulic power cylinder |
| CN103821703A (en) * | 2014-01-06 | 2014-05-28 | 北京万普瑞能源技术有限公司 | Underground hydraulic piston pump |
| CN104653541A (en) * | 2015-03-11 | 2015-05-27 | 北京双良石油技术有限公司 | Mine water media hydraulic cylinder and continuous oil extraction device |
| CN206681957U (en) * | 2017-04-26 | 2017-11-28 | 淄博东华石油技术有限公司 | Three plunger mining pumps |
| CN107630685A (en) * | 2017-09-20 | 2018-01-26 | 中国石油天然气股份有限公司 | A kind of rod-pumped well Rodless oil extraction tubing string and method |
| CN108361182A (en) * | 2018-01-08 | 2018-08-03 | 诸暨市超前泵业科技有限公司 | Underground reciprocating formula rodless pump |
| CN210598927U (en) * | 2019-08-08 | 2020-05-22 | 淄博东华石油技术有限公司 | Special downhole hydraulic motor for oil production |
Non-Patent Citations (1)
| Title |
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| 一种新型液压动力无杆采油系统;智玉杰;王朝霞;习进路;王锋国;刘斌;王波飞;;石油钻采工艺(第06期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110318712A (en) | 2019-10-11 |
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