CN204782852U - Anti - well washing device is pressed in crowded water injection mud area - Google Patents
Anti - well washing device is pressed in crowded water injection mud area Download PDFInfo
- Publication number
- CN204782852U CN204782852U CN201520431951.4U CN201520431951U CN204782852U CN 204782852 U CN204782852 U CN 204782852U CN 201520431951 U CN201520431951 U CN 201520431951U CN 204782852 U CN204782852 U CN 204782852U
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- pressure
- valve seat
- central tube
- valve
- well
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Abstract
The utility model discloses an anti - well washing device is pressed in crowded water injection mud area, the top connection, center tube, the rubber leather cup that connect gradually including top -down, top connection and center tube are central axial through formula structure, moreover the top connection bottom set up simultaneously the centre bore with and the peripheral other hole of centre bore, the centre bore is used for connection center pipe upper end, the other downthehole malleation check valve of installing, the inside back pressure check valve that is provided with of center tube. The utility model discloses at the crowded water injection mud of absorption well oil well, realize that the oil jacket annular space does not have the crowded water injection mud of liquid, crowded water injection mud finishes to lift the tubular column, can take and press the operation of backwash well. Effectively avoid crowded water injection mud to lead to the fact the card tubular column, solved the area and pressed the current situation that to carry out the backwash well, improved oil recovery well water mud shutoff effect.
Description
Technical field
The utility model relates to oil field oil reservoir and misses serious producing well (heavy oil wells) squeeze slurry plugging construction; Specifically squeeze slurry anti-flushing well device with pressure.
Background technology
At present when heavy oil wells squeeze slurry reservoir plugging or interlayer alter groove, because oil reservoir leakage is serious, in pit shaft, liquid producing fluid level is darker, oil sets annular space top no liquid, when squeeze slurry positive to stratum, cement paste can return on oil sets annular space, easily causes bit freezing.The oil well of present designing requirement squeezing off, is replace into a certain amount of cement paste substantially, does not reach the production engineering specifications of squeeze slurry shutoff channelling or oil reservoir.Namely squeeze slurry is allowed to, unnecessary cement paste needs to wash out pit shaft, otherwise cause bit freezing or stifled oil pipe, when there being pressure, cannot anti-flushing well be realized, now answer upper lifting pipe post, only have pressure release ability upper lifting pipe post, when pressure release, the cement paste on stratum will enter pit shaft, causes zonal isolation effect to reduce or shutoff inefficacy.
Through retrieval, learn that the utility model is for solve the problems of the technologies described above and the technical scheme that provides was not disclosed.
Summary of the invention
The purpose of this utility model is to provide squeeze slurry anti-flushing well device with pressure, solves the present situation cannot carrying out anti-flushing well with pressure, improves cement paste plugging effect.
In order to reach above-mentioned purpose, the utility model have employed following technical scheme, squeeze slurry anti-flushing well device with pressure, comprise connect successively from top to bottom top connection, central tube, rubber cup, described top connection and central tube are central axis to through structure, and top connection bottom offer simultaneously centre bore and and the other hole of centre bore periphery, described centre bore is for connecting central tube upper end, be provided with malleation one way valve in described other hole, described central tube inside is provided with back-pressure one way valve.
The perforate that described central tube lower end is offered through rubber cup center is connected with rubber cup.
The axial outer upper end of described rubber cup arranges baffle ring, and axially top, inner side arranges locking nut, and described baffle ring and locking nut are enclosed within central tube and central tube and rubber cup are linked into an integrated entity.
Described malleation one way valve and reverse one way valve are fixed in the other hole of top connection respectively by respective valve seat and central tube inside.
Described malleation one way valve comprises valve seat, valve ball, spring, the perforate of valve seat upper and lower side, and the valve ball diameter of valve seat inside is greater than opening diameter, arranges spring between valve ball top and valve seat inside top.
Described back-pressure one way valve comprises valve seat, valve ball, spring, the perforate of valve seat upper and lower side, and the valve ball diameter of valve seat inside is greater than opening diameter, arranges spring between valve ball bottom and valve seat inside bottom.
Compared to prior art, the utility model has following beneficial effect:
At absorption well oil well squeeze slurry, realize oil sets annular space no liquid squeeze slurry, squeeze slurry terminates need not upper lifting pipe post, can carry out anti-flushing well operation with pressure.Effectively prevent squeeze slurry and cause card tubing string, solve the present situation cannot carrying out anti-flushing well with pressure, improve cement paste plugging effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of squeeze slurry of the present utility model anti-flushing well device with pressure.
In figure: 1, top connection; 2, malleation one way valve; 3, back-pressure one way valve; 4, spring; 5, baffle ring; 6, locking nut; 7, rubber cup.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the utility model.
According to Fig. 1, squeeze slurry anti-flushing well device with pressure, comprise connect successively from top to bottom top connection 1, central tube, rubber cup 7, described top connection and central tube are central axis to through structure, and top connection bottom offer simultaneously centre bore and and the other hole of centre bore periphery, described centre bore is for connecting central tube upper end, and be provided with malleation one way valve 2 in described other hole, described central tube inside is provided with back-pressure one way valve 3.The perforate that described central tube lower end is offered through rubber cup center is connected with rubber cup.The axial outer upper end of described rubber cup arranges baffle ring 5, and axially top, inner side arranges locking nut 6, and described baffle ring and locking nut are enclosed within central tube and central tube and rubber cup are linked into an integrated entity.Described malleation one way valve and reverse one way valve are fixed in the other hole of top connection respectively by respective valve seat and central tube inside.
Described malleation one way valve comprises valve seat, valve ball, spring, the perforate of valve seat upper and lower side, and the valve ball diameter of valve seat inside is greater than opening diameter, arranges spring between valve ball top and valve seat inside top.
Described back-pressure one way valve comprises valve seat, valve ball, spring, the perforate of valve seat upper and lower side, and the valve ball diameter of valve seat inside is greater than opening diameter, arranges spring between valve ball bottom and valve seat inside bottom.
This device is connected to oil pipe afterbody of going into the well, with tubing string by this device down to needing more than squeeze slurry reservoir plugging 1 ~ 2m(or design attitude), sit hanger, install wellhead assembly.During positive squeeze slurry, inverse well-flushing valve is closed, the ball-and-seat that cement paste is flowed through in this device by oil pipe inner chamber enters stratum, and under the effect of bottom rubber cup, cement paste can not return on oil sets annular space, with the increase of squeeze pressure, rubber cup sealing is more tight, after cement paste squeezing terminates, under the pressure effect of rubber cup bottom, ball-and-seat is closed, and cement paste can not enter oil pipe inner chamber; Now carry out anti-flushing well, liquid stream enters oil pipe inner chamber at the inverse well-flushing valve of oil sets annular space through rubber cup top, and the cement paste in oil pipe is washed out ground, complete well-flushing work, close wellhead assembly, after cement paste multiviscosisty is solidified, trip out tubing string in well and take this device out of.
This device can realize oil sets annular space no liquid squeeze slurry, and squeeze slurry terminates, and can keep squeeze pressure, and formation water mud can not be told outward, can carry out anti-flushing well operation with pressure, effectively improves cement paste plugging effect.
The foregoing is only preferred embodiment of the present utility model, be not used to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (6)
1. squeeze slurry anti-flushing well device with pressure, it is characterized in that, comprise connect successively from top to bottom top connection, central tube, rubber cup, described top connection and central tube are central axis to through structure, and top connection bottom offer simultaneously centre bore and and the other hole of centre bore periphery, described centre bore is for connecting central tube upper end, and be provided with malleation one way valve in described other hole, described central tube inside is provided with back-pressure one way valve.
2. squeeze slurry according to claim 1 anti-flushing well device with pressure, is characterized in that, the perforate that described central tube lower end is offered through rubber cup center is connected with rubber cup.
3. squeeze slurry according to claim 2 anti-flushing well device with pressure, it is characterized in that, the axial outer upper end of described rubber cup arranges baffle ring, and axially top, inner side arranges locking nut, and described baffle ring and locking nut are enclosed within central tube and central tube and rubber cup are linked into an integrated entity.
4. squeeze slurry according to claim 1 anti-flushing well device with pressure, is characterized in that, described malleation one way valve and reverse one way valve are fixed in the other hole of top connection respectively by respective valve seat and central tube inside.
5. squeeze slurry according to claim 1 anti-flushing well device with pressure, it is characterized in that, described malleation one way valve comprises valve seat, valve ball, spring, the perforate of valve seat upper and lower side, the valve ball diameter of valve seat inside is greater than opening diameter, arranges spring between valve ball top and valve seat inside top.
6. squeeze slurry according to claim 1 anti-flushing well device with pressure, it is characterized in that, described back-pressure one way valve comprises valve seat, valve ball, spring, the perforate of valve seat upper and lower side, the valve ball diameter of valve seat inside is greater than opening diameter, arranges spring between valve ball bottom and valve seat inside bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520431951.4U CN204782852U (en) | 2015-06-23 | 2015-06-23 | Anti - well washing device is pressed in crowded water injection mud area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520431951.4U CN204782852U (en) | 2015-06-23 | 2015-06-23 | Anti - well washing device is pressed in crowded water injection mud area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782852U true CN204782852U (en) | 2015-11-18 |
Family
ID=54522920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520431951.4U Expired - Fee Related CN204782852U (en) | 2015-06-23 | 2015-06-23 | Anti - well washing device is pressed in crowded water injection mud area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204782852U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747483A (en) * | 2017-09-28 | 2018-03-02 | 宝鸡市金海源钛标准件制品有限公司 | A kind of titanium alloy check valve |
| CN108798563A (en) * | 2018-05-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | Fluid-power motor and its anti-block apparatus |
| CN113445955A (en) * | 2021-08-09 | 2021-09-28 | 湖北福瑞得能源科技有限公司 | Multifunctional intelligent oil well hot washing stratum protector and working method thereof |
-
2015
- 2015-06-23 CN CN201520431951.4U patent/CN204782852U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747483A (en) * | 2017-09-28 | 2018-03-02 | 宝鸡市金海源钛标准件制品有限公司 | A kind of titanium alloy check valve |
| CN108798563A (en) * | 2018-05-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | Fluid-power motor and its anti-block apparatus |
| CN113445955A (en) * | 2021-08-09 | 2021-09-28 | 湖北福瑞得能源科技有限公司 | Multifunctional intelligent oil well hot washing stratum protector and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160623 |