CN202228038U - Pipe string for plugging shallow-layer sleeve leakage water injection well - Google Patents
Pipe string for plugging shallow-layer sleeve leakage water injection well Download PDFInfo
- Publication number
- CN202228038U CN202228038U CN2011203552833U CN201120355283U CN202228038U CN 202228038 U CN202228038 U CN 202228038U CN 2011203552833 U CN2011203552833 U CN 2011203552833U CN 201120355283 U CN201120355283 U CN 201120355283U CN 202228038 U CN202228038 U CN 202228038U
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- water injection
- packer
- sleeve
- water
- sleeve pipe
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Abstract
A pipe string for plugging a shallow-layer sleeve leakage water injection well comprises a sleeve, a water injection pipe string, a water distribution device, a water injection layer and a check valve, wherein the water injection pipe string is lowered into the sleeve; the water distribution device and the check valve connected in series with and mounted at the lower part of the water injection pipe string; the water injection layer is arranged outside the lower part of the sleeve, and communicated with the sleeve; the water distribution device is communicated with the sleeve; a leakage point communicated with the sleeve is formed on the cement top of the sleeve; a Y341 packer and a K344 packer are mounted between the sleeve and the water injection pipe string; and the Y341 packer and the K344 packer are connected into the water injection pipe string, and are mounted below the leakage point. As the Y341 packer and the K344 packer are mounted below the leakage point, injected water is separated from the leakage point, and cannot flow back to the ground from the leakage point. Therefore, the long-term normal water injection of the water injection well is guaranteed, and the economic benefit is remarkable.
Description
Technical field
The utility model is the oil-field flooding tubing string, particularly a kind of shallow-layer casing leakage water injection well shutoff tubing string.
Background technology
Water injection well is behind waterflooding extraction for many years, and problems such as breakage, distortion have all appearred in a lot of sleeve pipes.When casing leakage point returns high when above at this well water mud; Be called the shallow-layer casing leakage; When the shallow-layer casing leakage appears in water injection well, inject water and just can return ground through the ring-like space of production string and outer layer sleeve from leakage points, cause ground to return water and cause this water injection well to stop annotating.The governing measure of shallow-layer casing leakage water injection well mainly contains three kinds of methods at present, and the one, change the sleeve pipe on the leakage points; The 2nd, adopt cement that shutoff is carried out in leakage place; The 3rd, adopt single packer shutoff.The sleeve pipe of changing on the leakage points has limitations such as operating cost height, the engineering time is long, improvement well section is limited; Adopt cement that shutoff is carried out in leakage place and have limitations such as the shutoff pressure-bearing is low; Adopt single packer shutoff meeting to cause period of validity short because of the tubing string wriggling.
Summary of the invention
The purpose of the utility model provides a kind of shallow-layer casing leakage water injection well shutoff tubing string, makes it inject water and is not back to the ground face from the casing leakage point, makes the normal water filling of water injection well.
The purpose of the utility model is achieved in that and comprises sleeve pipe, water injection string, injection well downhole flow regulator, water filling layer, ball-and-seat, and water injection string is lowered in the sleeve pipe, water injection string bottom be installed in series injection well downhole flow regulator, ball-and-seat; The water filling layer is outside the sleeve pipe bottom; Water filling layer and sleeve pipe UNICOM, injection well downhole flow regulator communicates with sleeve pipe, and the cement of sleeve pipe returns has leak source on the height; Leak source communicates with sleeve pipe; Y341 packer and K344 packer are installed between sleeve pipe and water injection string, and Y341 packer, K344 packer are connected in the water injection string, and Y341 packer, K344 packer are under the leak source.
The beneficial effect of the utility model is: Y341 packer and K344 packer are installed under leak source, injection water and leak source are separated, inject water and can not be back to ground from leak source, water injection well normally water filling for a long time has remarkable economic efficiency.
Description of drawings
Fig. 1 is the sketch map of the utility model embodiment.
The specific embodiment
Below in conjunction with Fig. 1 the embodiment of the utility model is described:
Can know that by figure the embodiment of the utility model comprises sleeve pipe 1, water injection string 2, injection well downhole flow regulator 5, water filling layer 6, ball-and-seat 7, water injection string 2 is lowered in the sleeve pipe 1; Water injection string 2 bottoms be installed in series injection well downhole flow regulator 5, ball-and-seat 7, water filling layer 6 outside the sleeve pipe bottom, water filling layer 6 and sleeve pipe 1 UNICOM; Injection well downhole flow regulator 5 communicates with sleeve pipe 1; The cement of sleeve pipe 1 returns has leak source 8 on the height, leak source 8 communicates with sleeve pipe 1, and Y341 packer 3 and K344 packer 4 are installed between sleeve pipe 1 and water injection string 2; Y341 packer 3,3K344 packer 4 are connected in the water injection string 2, and Y341 packer 3, K344 packer 4 are under the leak source 8.Be lowered to before water injection string 2, Y341 packer 3, K344 packer 4, injection well downhole flow regulator 5, the ball-and-seat 7; Look for leakage operation earlier; Seek the position of leakage points 8,, be lowered to 40 arm logging instruments again the borehole wall under the leakage points 8 is tested if leakage points 8 is returned on the height at cement; On the borehole wall under the leakage points 8, seek hydraulically smooth surface, confirm the installation site of Y341 packer 3,3K344 packer 4.
Y341 packer 3 is a hydraulic packer, applies hydraulic coupling seat envelope by ground, has the advantage of good airproof performance.K344 packer 4 is an inflatable packer, self can seal on the one hand, also can prevent the wriggling of water injection string 2; Y341 packer 3 is damaged; Y341 packer 3, K344 packer 4 are supported mutually, make its permanently effective separately work, make water injection well normally water filling for a long time.
Claims (1)
1. shallow-layer casing leakage water injection well shutoff tubing string; Comprise sleeve pipe (1), water injection string (2), injection well downhole flow regulator (5), water filling layer (6), ball-and-seat (7); Water injection string (2) is lowered in the sleeve pipe (1); Water injection string (2) bottom be installed in series injection well downhole flow regulator (5), ball-and-seat (7), water filling layer (6) outside the sleeve pipe bottom, water filling layer (6) and sleeve pipe (1) UNICOM; Injection well downhole flow regulator (5) communicates with sleeve pipe (1); The cement of sleeve pipe (1) returns has leak source (8) on the height, leak source (8) communicates with sleeve pipe (1), it is characterized in that: Y341 packer (3) and K344 packer (4) are installed between sleeve pipe (1) and water injection string (2); Y341 packer (3), K344 packer (4) are connected in the water injection string (2), and Y341 packer (3), K344 packer (4) are under the leak source (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203552833U CN202228038U (en) | 2011-09-21 | 2011-09-21 | Pipe string for plugging shallow-layer sleeve leakage water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203552833U CN202228038U (en) | 2011-09-21 | 2011-09-21 | Pipe string for plugging shallow-layer sleeve leakage water injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228038U true CN202228038U (en) | 2012-05-23 |
Family
ID=46078626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203552833U Expired - Fee Related CN202228038U (en) | 2011-09-21 | 2011-09-21 | Pipe string for plugging shallow-layer sleeve leakage water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228038U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953304A (en) * | 2014-05-18 | 2014-07-30 | 中国石油化工股份有限公司 | Casing repaired separate layer water injection string |
| CN105443071A (en) * | 2015-12-07 | 2016-03-30 | 中国石油天然气股份有限公司 | Process for blocking underwater channeling of roof |
| CN108301814A (en) * | 2017-05-15 | 2018-07-20 | 中国石油化工股份有限公司 | Set breaks well card and seals seperated layer water injection equipment and technology |
| CN110566191A (en) * | 2019-10-15 | 2019-12-13 | 山西蓝焰煤层气集团有限责任公司 | Method for detecting casing loss in coal-bed gas well |
-
2011
- 2011-09-21 CN CN2011203552833U patent/CN202228038U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953304A (en) * | 2014-05-18 | 2014-07-30 | 中国石油化工股份有限公司 | Casing repaired separate layer water injection string |
| CN105443071A (en) * | 2015-12-07 | 2016-03-30 | 中国石油天然气股份有限公司 | Process for blocking underwater channeling of roof |
| CN108301814A (en) * | 2017-05-15 | 2018-07-20 | 中国石油化工股份有限公司 | Set breaks well card and seals seperated layer water injection equipment and technology |
| CN110566191A (en) * | 2019-10-15 | 2019-12-13 | 山西蓝焰煤层气集团有限责任公司 | Method for detecting casing loss in coal-bed gas well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20130921 |