CN201277022Y - Concentric dual-tube layered polymer injecting column jacket capable of flushing - Google Patents
Concentric dual-tube layered polymer injecting column jacket capable of flushing Download PDFInfo
- Publication number
- CN201277022Y CN201277022Y CNU2008201747572U CN200820174757U CN201277022Y CN 201277022 Y CN201277022 Y CN 201277022Y CN U2008201747572 U CNU2008201747572 U CN U2008201747572U CN 200820174757 U CN200820174757 U CN 200820174757U CN 201277022 Y CN201277022 Y CN 201277022Y
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- China
- Prior art keywords
- pipe
- polymer injection
- sliding sleeve
- tube
- poly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A concentric separated layer polymer injection pipe string capable of washing wells with double-pipe is composed of an outer pipe, an inner pipe, an upper polymer injection sliding sleeve, a double-pipe seal, a sealing pipe, a packer, a lower polymer injection sliding sleeve and a ball valve. The concentric separated layer polymer injection pipe string is characterized in that the lower portion of the outer pipe is mounted inside a casing pipe, the upper portion of the outer pipe is sequentially connected with the upper polymer injection sliding sleeve, the double-pipe seal, the packer, the lower polymer injection sliding sleeve and the ball valve, the inner pipe is arranged inside the outer pipe, and the lower portion of the inner pipe is connected with the sealing pipe. The concentric separated layer polymer injection pipe string capable of washing wells with double-pipe has the advantages of low polymer injection shearing rate, capability of washing wells, preventing clogging and bringing convenience for allocating and salvaging polymer injection cores, which is widely applied in the polymer injection technology for oil production.
Description
One, technical field
The utility model relates to the oil exploitation down-hole string, particularly a kind of washing well concentric double pipe stratified injection tubular pile.
Two, background technology
At present, the notes in the oil exploitation well polymer displacement of reservoir oil tertiary oil recovery technology gather tubing string, mainly adopt the poly-fuse realization throttling step-down of joining of ring channel structures, have bigger chock pressure difference.But the poly-tubing string of the notes of this structure exists following shortcoming or deficiency: 1. when the poly-employing of notes sewage mixed water injection mode, oarse-grained suspension deposits in tubing string in the sewage, causes mixed with polymers inhomogeneous, often stops up the poly-passage of notes; 2. poly-fuse difficulty is annotated in dispensing pulling allotment; 3. polymer is easy to shear, and viscosity retention ratio is low; 4. can not anti-flushing well.
Three, summary of the invention
The purpose of this utility model provides a kind of improved a kind of washing well concentric double pipe stratified injection tubular pile, adopt two-tube slotting envelope and binary channels layering injecting structure, the both shortcoming or deficiencies that can overcome effectively or avoid existing in the above-mentioned prior art, layering be can carry out effectively again, poly-and anti-flushing well operation annotated.
Washing well concentric double pipe stratified injection tubular pile described in the utility model, comprise outer tube, interior pipe, go up and annotate poly-sliding sleeve, two-tube slotting envelope, plug in tube sealing, packer, make a bet poly-sliding sleeve and ball valve, it is characterized in that described outer tube is lowered in the sleeve pipe, be connected with ball valve with last notes poly-sliding sleeve, two-tube slotting envelope, packer, the poly-sliding sleeve of making a bet in turn on it, pipe is installed in the outer tube in described, and it is connected with plug in tube sealing down.
Wherein, described packer is that washing well Y type is annotated poly-packer.Described plug in tube sealing passes two-tube slotting envelope, and its upper end is connected with interior pipe, and the lower end is free end.
The utility model compared with prior art has the following advantages:
1, the viscosity retention ratio height is injected in the low shearing that realizes polymer;
2, the test allotment is carried out on ground, and is easy to operate suitable, directly perceived;
3, can realize the completeness clean-out service of full well;
When 4, adopting with the water filling mixed water injection, mixed with polymers is even, prevents to stop up.
Four, description of drawings
Accompanying drawing is a kind of structural representation of the present utility model
Five, the specific embodiment
Washing well concentric double pipe stratified injection tubular pile described in the utility model comprises outer tube 1, interior pipe 2, goes up and annotate poly-sliding sleeve 3, two-tube slotting envelope 4, plug in tube sealing 5, packer 6, make a bet poly-sliding sleeve 7 and ball valve 8.Outer tube 1 is lowered in the sleeve pipe 9, is connected with ball valve 8 with last notes poly-sliding sleeve 3, two-tube slotting envelope 4, packer 6, the poly-sliding sleeve 7 of making a bet in turn on it.Interior pipe 2 is installed in the outer tube 1, and it is connected with plug in tube sealing 5 down.
Claims (3)
1, a kind of washing well concentric double pipe stratified injection tubular pile, comprise outer tube, interior pipe, go up and annotate poly-sliding sleeve, two-tube slotting envelope, plug in tube sealing, packer, make a bet poly-sliding sleeve and ball valve, it is characterized in that described outer tube is lowered in the sleeve pipe, be connected with ball valve with last notes poly-sliding sleeve, two-tube slotting envelope, packer, the poly-sliding sleeve of making a bet in turn on it, pipe is installed in the outer tube in described, and it is connected with plug in tube sealing down.
2,, it is characterized in that described packer is that washing well Y type is annotated poly-packer according to the described washing well concentric double pipe of claim 1 stratified injection tubular pile.
3, according to the described washing well concentric double pipe of claim 1 stratified injection tubular pile, it is characterized in that described plug in tube sealing passes two-tube slotting envelope, its upper end is connected with interior pipe, and the lower end is free end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201747572U CN201277022Y (en) | 2008-11-05 | 2008-11-05 | Concentric dual-tube layered polymer injecting column jacket capable of flushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201747572U CN201277022Y (en) | 2008-11-05 | 2008-11-05 | Concentric dual-tube layered polymer injecting column jacket capable of flushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201277022Y true CN201277022Y (en) | 2009-07-22 |
Family
ID=40894608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201747572U Expired - Fee Related CN201277022Y (en) | 2008-11-05 | 2008-11-05 | Concentric dual-tube layered polymer injecting column jacket capable of flushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201277022Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305056A (en) * | 2011-09-22 | 2012-01-04 | 哈尔滨工业大学 | Eccentric electric injection allocation device for polymer injection well |
| CN102434135A (en) * | 2011-12-02 | 2012-05-02 | 河南理工大学 | Multi-layer discharge and mining device for multiple seam developed area |
| CN111441752A (en) * | 2020-04-15 | 2020-07-24 | 王皓 | Multilayer polymer injection well washing method for coiled tubing |
-
2008
- 2008-11-05 CN CNU2008201747572U patent/CN201277022Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305056A (en) * | 2011-09-22 | 2012-01-04 | 哈尔滨工业大学 | Eccentric electric injection allocation device for polymer injection well |
| CN102305056B (en) * | 2011-09-22 | 2013-09-18 | 哈尔滨工业大学 | Eccentric electric injection allocation device for polymer injection well |
| CN102434135A (en) * | 2011-12-02 | 2012-05-02 | 河南理工大学 | Multi-layer discharge and mining device for multiple seam developed area |
| CN102434135B (en) * | 2011-12-02 | 2014-07-30 | 河南理工大学 | Multi-layer discharge and mining device for multiple seam developed area |
| CN111441752A (en) * | 2020-04-15 | 2020-07-24 | 王皓 | Multilayer polymer injection well washing method for coiled tubing |
| CN111441752B (en) * | 2020-04-15 | 2021-12-10 | 江苏瑞亿石油机械有限公司 | Multilayer polymer injection well washing method for coiled tubing |
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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: 20090722 Termination date: 20091207 |