CN203285390U - Well-flushing circulating check valve on pump - Google Patents
Well-flushing circulating check valve on pump Download PDFInfo
- Publication number
- CN203285390U CN203285390U CN2013202831782U CN201320283178U CN203285390U CN 203285390 U CN203285390 U CN 203285390U CN 2013202831782 U CN2013202831782 U CN 2013202831782U CN 201320283178 U CN201320283178 U CN 201320283178U CN 203285390 U CN203285390 U CN 203285390U
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- well
- piston
- pipe
- washing
- sealing ring
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Abstract
The utility model relates to a well-washing circulating check valve on a pump. The upper part of an outer sealing pipe is connected with outer threads of the lower part of an upper connector, the upper part of an inner pipe is connected with inner threads of the lower part of the upper connector, a spring and a piston are installed between the outer sealing pipe and the inner pipe, the spring is arranged above the piston, an outer sealing ring is installed between the outer sealing pipe and the piston, the lower part of the outer sealing pipe is connected with a lower connector, an end surface sealing ring is installed on the upper end of the lower connector, the lower part of the piston is arranged on the end surface sealing ring, the outer sealing pipe is provided with an outer communication hole, the communication hole is arranged between the outer sealing ring and the end surface sealing ring, the pressure of well-washing water pushes the piston to move upwards, so that the communication between the inside and the outside of an oil pipe is facilitated, and the circulating well washing can be realized; the well-washing circulating check valve can be installed below a wax precipitation point on the pump, so that the well is does not need to be circularly washed from the bottom of an oil extraction pipe column, the heat efficiency is high, the manpower and the material resource can be saved, the well-washing liquid can be prevented from entering an oil layer to avoid polluting the oil layer, and the well washing effect can be improved; the movement of a sealing piece is not needed by adopting the end surface sealing ring, so that the reliability in sealing can be realized, and the normal production after the washing of an oil well can be guaranteed.
Description
Technical field
The utility model belongs to the instrument that oil well is used, and is the device that the paraffin-troubled well hot-washing wax remover is used, particularly well-flushing circulation one way valve on a kind of pump.
Background technology
In oilfield development process, oil well heat washes that to fall thick wax removal be a daily management maintenance job, normal wax removal operation is carried out heat with whole well sections often and is washed, the hot clean-up well segment length, heat waste is large, hot washing lotion amount is large, longevity of service, well washing effect is poor, and well-flushing water needs oil well pump to extract out, causes oil well drainage period oil mass to descend, and well-flushing liquid is easily missed polluted reservoir, cause oil well output to reduce, serious needs carry out the de-plugging measure and just can return to normal production, and cause the waste of human and material resources, financial resources.
Summary of the invention
The purpose of this utility model is to provide well-flushing circulation one way valve on a kind of pump, on being arranged under the wax deposition point on flow string, the flow string above to wax deposition point carries out hot-washing wax remover, saves human and material resources, prevent that well-flushing liquid from entering the oil layer pollution oil reservoir, improve well washing effect.
the purpose of this utility model is achieved in that and comprises top connection, outer sealed tube, spring, exterior seal ring, end-face seal ring, lower contact, inner tube, piston, outer sealed tube top is connected with the top connection lower external thread, inner tube top is connected with the top connection lower internal thread, mounting spring between outer sealed tube and inner tube, piston, spring is on piston, between outer sealed tube and piston, exterior seal ring is installed, the bottom of outer sealed tube is connected with lower contact, end-face seal ring is arranged on the upper end of lower contact, the lower seat of piston is on end-face seal ring, outer linked hole is arranged on outer sealed tube, linked hole is in exterior seal ring, between end-face seal ring.
The beneficial effects of the utility model are: the pressure pushing piston of well-flushing water is up, make the inside and outside UNICOM of oil pipe realize circulation well cleanup, can be arranged under the wax deposition point on pump, not need from flow string bottom cycle well-flushing, the thermal efficiency is high, save human and material resources, prevent that well-flushing liquid from entering the oil layer pollution oil reservoir, improved well washing effect, the end-face seal ring of employing does not need the seal motion, thereby sealing is reliable, can guarantee normally to produce after oil well cleanup.
Description of drawings
Accompanying drawing is the assembling drawing of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
as shown in the figure, embodiment of the present utility model comprises top connection 1, outer sealed tube 2, spring 3, exterior seal ring 4, end-face seal ring 6, lower contact 7, inner tube 8, piston 9, outer sealed tube 2 tops are connected with top connection 1 lower external thread, inner tube 8 tops are connected with top connection 1 lower internal thread, mounting spring 3 between outer sealed tube 2 and inner tube 10, piston 9, spring 3 is on piston 9, exterior seal ring 4 is installed between outer sealed tube 2 and piston 8, the bottom of outer sealed tube 2 is connected with lower contact 7, end-face seal ring 6 is arranged on the upper end of lower contact 7, the lower seat of piston 9 is on end-face seal ring 6, outer linked hole 5 is arranged on outer sealed tube 2, linked hole 5 is in exterior seal ring 4, between end-face seal ring 6.Interior linked hole 10 is arranged at inner tube 8 bottoms.
while going into the well, connect a cover packer in its underpart, during well-flushing, under the packer effect, casing pressure is higher than the flow string internal pressure, be that piston 8 bottom pressure are higher than upper pressure, under differential pressure action, produce thrust upwards, make spring 3 compressions, stored energy, when piston 8 bottom pressure during higher than the top certain pressure, the upwards thrust that pressure reduction produces is greater than initial tension of spring, piston 8 is up, flow string under the rear wax deposition point of end-face seal ring 6 is left by UNICOM in piston 8 bottoms, well-flushing water enters in it to mix with Produced Liquid upwards and flows out, realize well-flushing, therefore, well-flushing water does not need from the flow string bottom cycle, the thermal efficiency is high, save manpower, material resources, prevent that well-flushing liquid from entering the oil layer pollution oil reservoir, improve well washing effect.
While stopping well-flushing, piston 8 bottom pressure drops, spring 3 releases energy, and pushing piston 8 resets, and seat is on end-face seal ring again for piston 8, and the liquid in inner tube can not release, and oil well can normally be produced.
Claims (2)
1. well-flushing circulation one way valve on a pump, comprise top connection (1), outer sealed tube (2), spring (3), exterior seal ring (4), end-face seal ring (6), lower contact (7), inner tube (8), piston (9), it is characterized in that: outer sealed tube (2) top is connected with top connection (1) lower external thread, inner tube (8) top is connected with top connection (1) lower internal thread, mounting spring (3) between outer sealed tube (2) and inner tube (10), piston (9), spring (3) is on piston (9), between outer sealed tube (2) and piston (8), exterior seal ring (4) is installed, the bottom of outer sealed tube (2) is connected with lower contact (7), end-face seal ring (6) is arranged on the upper end of lower contact (7), the lower seat of piston (9) is on end-face seal ring (6), outer linked hole (5) is arranged on outer sealed tube (2), linked hole (5) is in exterior seal ring (4), between end-face seal ring (6).
2. well-flushing circulation one way valve on pump according to claim 1, it is characterized in that: interior linked hole (10) is arranged at inner tube (8) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202831782U CN203285390U (en) | 2013-05-14 | 2013-05-14 | Well-flushing circulating check valve on pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202831782U CN203285390U (en) | 2013-05-14 | 2013-05-14 | Well-flushing circulating check valve on pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203285390U true CN203285390U (en) | 2013-11-13 |
Family
ID=49541759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202831782U Expired - Lifetime CN203285390U (en) | 2013-05-14 | 2013-05-14 | Well-flushing circulating check valve on pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203285390U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953313A (en) * | 2014-05-14 | 2014-07-30 | 中国石油集团渤海钻探工程有限公司 | Erosion-resistant check valve |
| CN107558951A (en) * | 2017-09-29 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of hydraulic selector circulation slide sleeve |
| CN107869320A (en) * | 2016-09-23 | 2018-04-03 | 中国石油化工股份有限公司 | Anti- return of one kind tells flushing valve |
| CN112065329A (en) * | 2019-06-11 | 2020-12-11 | 中国石油天然气股份有限公司 | Cleaning tool and method for oil and gas well shaft |
| CN112943155A (en) * | 2021-01-15 | 2021-06-11 | 中国石油天然气股份有限公司 | Hot washing well packer based on shape memory alloy |
-
2013
- 2013-05-14 CN CN2013202831782U patent/CN203285390U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953313A (en) * | 2014-05-14 | 2014-07-30 | 中国石油集团渤海钻探工程有限公司 | Erosion-resistant check valve |
| CN107869320A (en) * | 2016-09-23 | 2018-04-03 | 中国石油化工股份有限公司 | Anti- return of one kind tells flushing valve |
| CN107558951A (en) * | 2017-09-29 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of hydraulic selector circulation slide sleeve |
| CN112065329A (en) * | 2019-06-11 | 2020-12-11 | 中国石油天然气股份有限公司 | Cleaning tool and method for oil and gas well shaft |
| CN112943155A (en) * | 2021-01-15 | 2021-06-11 | 中国石油天然气股份有限公司 | Hot washing well packer based on shape memory alloy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |