CN108252678B - A downhole plugging device for disconnecting plunger tube pump without well suppression operation - Google Patents
A downhole plugging device for disconnecting plunger tube pump without well suppression operation Download PDFInfo
- Publication number
- CN108252678B CN108252678B CN201611239084.XA CN201611239084A CN108252678B CN 108252678 B CN108252678 B CN 108252678B CN 201611239084 A CN201611239084 A CN 201611239084A CN 108252678 B CN108252678 B CN 108252678B
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- Prior art keywords
- pump
- inner pipe
- plunger
- fixed valve
- pipe
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
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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
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
本发明涉及油田油管作业领域，属于脱接柱塞管式泵井下封堵装置结构的改进，特别是一种脱接柱塞管式泵不压井作业的井下封堵装置，包括位于泵上的油管柱内的抽油杆连接着柱塞泵，在泵上油管柱的下端口上连接着释放管，释放管的下端口连接着泵筒，在泵筒内的下端设置着密封凸台，泵筒连接着泵下油管柱，泵下油管柱的下端封闭，配合安装在泵筒内的柱塞泵，其上端通过柱塞脱接器连接着抽油杆，柱塞泵的下端通过固定阀脱接器连接着固定阀，固定阀上端的挡台封面与密封凸台相配合，固定阀的下端通过内管脱接器连接着内管总成，在泵下油管柱内上部设置的限位环台的内径小于内管总成内管的外径。其结构合理，性能可靠，可以多次封堵井下压力，带压起下抽油杆、油管的修井作业，可以从井下封堵管道，隔绝管内外压力，节约能源，保护环境，提高安全系数，提高生产效率，降低成本。
The invention relates to the field of oil field oil pipe operation, and belongs to the improvement of the structure of a downhole plugging device of a detachable plunger tube pump, in particular to a downhole plugging device of a detachable plunger tube pump for non-well pressure operation, comprising a sucker rod in an oil pipe column on the pump connected to the plunger pump, a release pipe connected to the lower end of the oil pipe column on the pump, the lower end of the release pipe connected to a pump barrel, a sealing boss arranged at the lower end in the pump barrel, the pump barrel connected to the oil pipe column under the pump, the lower end of the oil pipe column under the pump is closed, and the plunger pump installed in the pump barrel is matched, the upper end of the pump rod is connected to the pump rod through a plunger disconnector, the lower end of the plunger pump is connected to a fixed valve through a fixed valve disconnector, the baffle cover at the upper end of the fixed valve cooperates with the sealing boss, the lower end of the fixed valve is connected to an inner pipe assembly through an inner pipe disconnector, and the inner diameter of a limit ring arranged at the upper inner part of the oil pipe column under the pump is smaller than the outer diameter of an inner pipe of the inner pipe assembly. It has a reasonable structure and reliable performance. It can seal the downhole pressure multiple times and carry out well repair operations by lifting and lowering the sucker rod and the oil pipe under pressure. It can seal the pipeline from underground and isolate the pressure inside and outside the pipe, thus saving energy, protecting the environment, improving the safety factor, increasing production efficiency and reducing costs.
Description
Technical Field
The invention relates to the field of oilfield oil pipe operation, belongs to the improvement of an underground plugging device structure of a disconnecting plunger pipe pump, and particularly relates to an underground plugging device for the snubbing operation of a disconnecting plunger pipe pump.
Background
In a high-yield oil well using a tubular pump, or when an upper-stage oil pipe uses a liner pipe, an oil pump with a pump diameter larger than the inner diameter of the upper-stage oil pipe is used to ensure yield. The plunger of the pump can only be lowered or raised simultaneously with the pump barrel. And a disconnecting device is arranged between the sucker rod and the plunger, and the butt joint or disconnection is realized through axial movement.
In the well repairing process, a pipeline under the pump needs to be plugged to isolate internal and external pressure sources of the pipeline. In the construction process, the underground medium is prevented from being sprayed out, so that energy waste, environmental pollution or safety accidents are avoided.
At present, no similar product can meet the requirements, and well control liquid is generally used for well repair, and is filled into an oil pipe to limit the underground pressure. Long operation period and high cost.
Disclosure of Invention
The invention aims to provide an underground plugging device for the non-well killing operation of a disconnecting plunger tube pump, which has the advantages of reasonable structure, reliable performance, capability of plugging underground pressure for a plurality of times, capability of plugging a pipeline from underground in the well repairing operation of a sucker rod and an oil pipe under pressure, capability of isolating the pressure inside and outside the pipe, energy conservation, environmental protection, safety coefficient improvement, production efficiency improvement and cost reduction.
The purpose of the invention is realized in the following way: the utility model provides a take-off plunger tubular pump does not kill well operation's underground plugging device, including being located the sucker rod in the tubing string on the pump and being connected the plunger pump, be connected the release pipe on the lower port of tubing string on the pump, the lower port of release pipe is connected the pump barrel, be provided with sealed boss in the lower extreme in the pump barrel, the pump barrel is connected tubing string under the pump, the lower extreme of tubing string is sealed under the pump, the plunger pump in the pump barrel is installed in the cooperation, its upper end is connected the sucker rod through the plunger tripping device, the lower extreme of plunger pump is connected the fixed valve through the fixed valve tripping device, the fender platform front cover and the sealed boss of fixed valve upper end cooperate, the lower extreme of fixed valve is connected the inner tube assembly through the inner tube tripping device, the internal diameter of the spacing ring platform that upper portion set up in tubing string under the pump is less than the external diameter of inner tube assembly inner tube.
The working principle of the invention is as follows:
1. When the tubing string is installed, the plugging device is in a plugging state, and the plunger and the fixed valve assembly release the pipe section in the pump. The tubing string is installed, pressure can be tested, and after the tightness is verified to be qualified, the sucker rod string is lowered; connecting the upper part of the plunger uncoupling device to the sucker rod string and lowering the plunger uncoupling device together; the plunger assembly, the fixed valve assembly and the inner pipe assembly are contacted together by the sucker rod string, and the plunger connector, the fixed valve connector and the inner pipe connector are connected at the same time; the sealing surface of the baffle table on the fixed valve is matched with the sealing boss, and meanwhile, the inner pipe descends to an opening position.
The sucker rod is lifted by half a meter and then lowered, so that the fixed valve connector is opened, the anti-flushing distance can be adjusted, and oil pumping is started.
2. When oil is extracted, the plugging device is in an open state, oil outside the oil pipe column can enter, and internal and external media can enter and exit through the oil inlet, so that oil can be pumped normally.
3. Before well repair, firstly lowering the sucker rod, butting the fixed valve connector, lifting up the fixed valve, lifting up the inner pipe through the inner pipe connector, and when two sealing rings on the inner pipe are arranged on two sides of an oil inlet of a tubing string under the pump, the plugging device is in a closed state, and the inside and the outside of the tubing string are isolated; and continuing lifting, enabling the inner pipe to reach the limiting table, releasing the disengaging device, and enabling the fixed valve and the plunger to simultaneously ascend to the release pipe section. And lifting the sucker rod, and releasing the plunger release connector.
After the tightness is verified by pressure test, well repairing operations such as lifting the sucker rod, the oil pipe and the like can be performed; at this point, the sucker rod continues to be lifted, and other components remain in the pump barrel.
The invention has reasonable structure and reliable performance, realizes the well repairing operation of plugging the underground pressure for multiple times and pressing the sucker rod and the oil pipe, realizes the plugging of the pipeline from the underground, isolates the pressure inside and outside the pipe, saves energy, protects the environment, improves the safety coefficient, improves the production efficiency and reduces the cost.
Drawings
The invention will be further described with reference to the accompanying drawings;
FIG. 1 is a schematic view of a structure of the present invention in a just-docked state;
FIG. 2 is a schematic view of the open state structure of the present invention;
FIG. 3 is a schematic diagram of the oil recovery state structure of the present invention;
fig. 4 is a schematic view of the closed state structure of the present invention.
Detailed Description
The underground plugging device for the well killing operation of the disconnecting plunger tube type pump is shown in figures 1,2,3 and 4, and comprises a sucker rod 4 in a tubing column 1 positioned on the pump, wherein the sucker rod 4 is connected with a plunger pump 6, a release tube 2 is connected to the lower port of the tubing column 1 on the pump, the lower port of the release tube 2 is connected with a pump cylinder 3, a sealing boss 10 is arranged at the lower end in the pump cylinder 3, the pump cylinder 3 is connected with a tubing column 13 under the pump, the lower end of the tubing column 13 under the pump is sealed, the upper end of the plunger pump 6 is matched with the plunger pump 6 installed in the pump cylinder 3, the upper end of the plunger pump is connected with the sucker rod 4 through a plunger disconnecting device 5, the lower end of the plunger pump 6 is connected with a fixed valve 9 through a fixed valve disconnecting device 7, the sealing surface of a baffle 8 on the fixed valve 9 is matched with the sealing boss 10, the lower end of the fixed valve 9 is connected with an inner tube assembly through an inner tube disconnecting device 11, and the inner diameter of a limiting ring table 12 arranged at the upper part in the pump lower tubing column 13 is smaller than the outer diameter of an inner tube 15 of the inner tube assembly. The inner diameter of the release tube 2 is larger than the outer diameters of the plunger pump 6 and the stationary valve 9. The inner pipe assembly is characterized in that an inner pipe side oil inlet hole 16 is formed in the pipe wall of an inner pipe 15, and two sealing rings 17 matched with the inner wall of a pump lower oil pipe column 13 are arranged on the inner pipe 15 positioned below the inner pipe side oil inlet hole 16. The plunger release 5 is a spring release. The fixed valve disengaging device 7 is a track type disengaging device. The inner pipe connector 11 is a spring type connector or a steel ball type connector.
Claims (4)
1. The utility model provides a take-off and connect plunger tubular pump not well killing operation's plugging device in pit, is connected plunger pump (6), characterized by including sucker rod (4) in tubing string (1) that are located on the pump: the lower port of the upper tubing string (1) of the pump is connected with a release tube (2), the lower port of the release tube (2) is connected with a pump barrel (3), the lower end in the pump barrel (3) is provided with a sealing boss (10), the pump barrel (3) is connected with a lower tubing string (13), the lower end of the lower tubing string (13) is closed, the pipe wall of the lower part of the lower tubing string (13) is provided with an outer pipe side oil inlet hole (14), the upper end of the outer pipe side oil inlet hole is matched with a plunger pump (6) arranged in the pump barrel (3), the upper end of the plunger pump is connected with a sucker rod (4) through a plunger disengaging device (5), the lower end of the plunger pump (6) is connected with a fixed valve (9) through a fixed valve disengaging device (7), the cover of the upper end of the fixed valve (9) is matched with the sealing boss (10), the lower end of the fixed valve (9) is connected with an inner pipe assembly through an inner pipe disengaging device (11), the inner diameter of a limit ring table (12) arranged at the upper part in the lower part of the lower tubing string (13) is smaller than the inner diameter of the inner pipe assembly (15), and the inner diameter of the inner pipe assembly is larger than the outer diameter of the inner pipe (15) of the inner pipe is larger than the inner pipe assembly (15) and the inner diameter of the inner pipe is larger than the inner pipe (15) is larger than the inner diameter of the inner pipe; the inner pipe assembly is characterized in that an inner pipe side oil inlet hole (16) is formed in the pipe wall of an inner pipe (15), and two sealing rings (17) matched with the inner wall of a pump oil pipe column (13) are arranged on the inner pipe (15) positioned at the lower part of the inner pipe side oil inlet hole (16);
Under the oil extraction state, the fixed valve connector (7) is in a disconnected state, the sucker rod is firstly lowered before the well is repaired, the fixed valve connector is butted, then lifted up, the fixed valve passes through the inner pipe connector, the inner pipe is lifted up, when two sealing rings on the inner pipe are arranged on two sides of an oil inlet of a tubing string under a pump, the plugging device is in a closed state, the inside and the outside of the tubing string are isolated, the lifting up is continued, the inner pipe reaches a limiting table, the connector is released, and the fixed valve and the plunger are simultaneously lifted up to a release pipe section.
2. The downhole plugging device for non-killing operation of a disconnecting plunger tube pump according to claim 1, wherein the plugging device comprises: the plunger disengaging device (5) is a spring disengaging device.
3. The downhole plugging device for non-killing operation of a disconnecting plunger tube pump according to claim 1, wherein the plugging device comprises: the fixed valve disengaging device (7) is a track type disengaging device.
4. The downhole plugging device for non-killing operation of a disconnecting plunger tube pump according to claim 1, wherein the plugging device comprises: the inner pipe connector (11) is a spring connector or a steel ball connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611239084.XA CN108252678B (en) | 2016-12-28 | 2016-12-28 | A downhole plugging device for disconnecting plunger tube pump without well suppression operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611239084.XA CN108252678B (en) | 2016-12-28 | 2016-12-28 | A downhole plugging device for disconnecting plunger tube pump without well suppression operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108252678A CN108252678A (en) | 2018-07-06 |
| CN108252678B true CN108252678B (en) | 2024-09-13 |
Family
ID=62720511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611239084.XA Expired - Fee Related CN108252678B (en) | 2016-12-28 | 2016-12-28 | A downhole plugging device for disconnecting plunger tube pump without well suppression operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108252678B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252902A (en) * | 2016-12-28 | 2018-07-06 | 克拉玛依胜利高原机械有限公司 | The process of improved tubing pump and motionless tubing string maintenance pump |
| CN115573685A (en) * | 2021-07-06 | 2023-01-06 | 中国石油天然气股份有限公司 | Oil pumping structure and oil pumping system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202500536U (en) * | 2011-12-16 | 2012-10-24 | 中国石油天然气股份有限公司 | Sucker Strings and Rod Strings with Self-Locking Disconnectors |
| CN205100952U (en) * | 2015-11-18 | 2016-03-23 | 克拉玛依胜利高原机械有限公司 | Device of self -sealing oil stream is overhauld in not kill -job oil pumping operation |
| CN205743820U (en) * | 2016-05-11 | 2016-11-30 | 克拉玛依胜利高原机械有限公司 | A kind of down-hole plugging device |
| CN206655676U (en) * | 2016-12-28 | 2017-11-21 | 克拉玛依胜利高原机械有限公司 | A kind of down-hole plugging device of uncoupling plunger tubing pump snubbing serving |
-
2016
- 2016-12-28 CN CN201611239084.XA patent/CN108252678B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202500536U (en) * | 2011-12-16 | 2012-10-24 | 中国石油天然气股份有限公司 | Sucker Strings and Rod Strings with Self-Locking Disconnectors |
| CN205100952U (en) * | 2015-11-18 | 2016-03-23 | 克拉玛依胜利高原机械有限公司 | Device of self -sealing oil stream is overhauld in not kill -job oil pumping operation |
| CN205743820U (en) * | 2016-05-11 | 2016-11-30 | 克拉玛依胜利高原机械有限公司 | A kind of down-hole plugging device |
| CN206655676U (en) * | 2016-12-28 | 2017-11-21 | 克拉玛依胜利高原机械有限公司 | A kind of down-hole plugging device of uncoupling plunger tubing pump snubbing serving |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108252678A (en) | 2018-07-06 |
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Granted publication date: 20240913 |
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| CF01 | Termination of patent right due to non-payment of annual fee |