CN204738787U - Water injection well ordinary pressure workover anti -overflow flows shutoff instrument - Google Patents
Water injection well ordinary pressure workover anti -overflow flows shutoff instrument Download PDFInfo
- Publication number
- CN204738787U CN204738787U CN201520500396.6U CN201520500396U CN204738787U CN 204738787 U CN204738787 U CN 204738787U CN 201520500396 U CN201520500396 U CN 201520500396U CN 204738787 U CN204738787 U CN 204738787U
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- CN
- China
- Prior art keywords
- sliding sleeve
- overflow
- overcoat
- shutoff
- wall
- Prior art date
- 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
The utility model relates to a water injection well ordinary pressure workover anti -overflow flows shutoff instrument has solved conventional waterflooding well workover and has not taked intraductal shutoff, and it influences the problem of environment to cause the overflow to flush easily, concrete including top connection, overcoat, go up sliding sleeve, sliding sleeve and lower clutch down, set up on the wall of overcoat that the overflow circulation is said and the underflow circulation is said, wherein go up the circulation of sliding sleeve outer wall shutoff overflow and say, the circulation of lower sliding sleeve outer wall shutoff underflow is said, goes up the vertical bar through -hole of outer wall equipartition that sets up elastic support, this elastic support between sliding sleeve and the lower sliding sleeve, go up the sliding sleeve and when the sliding sleeve glides to instrument overcoat bottom down, the overflow circulation says and opens, and the underflow circulation is said and is fed through with elastic support's bar through -hole. Because the overflow is all retrieved from the oil jacket annular space when playing the tubular column operation, the purpose of clean operation has been reached.
Description
Technical field
The utility model relates to the capping tools used in water injection well in oil fields well workover mechanism.
Background technology
The workover treatment of conventional waterflooding well is not taked to manage interior shutoff, takes well head draining overflow mode to carry out step-down after closing well step-down, and when causing lift pipe string, oil liquid in pipe is gushed out, and causes environment pollution to well head.
Summary of the invention
The purpose of this utility model is to provide a kind of water injection well normal pressure workover treatment anti-overflow capping tools, this instrument is used to carry out shutoff, when lift pipe string, oily liquid in pipe all can be imported unified in sleeve pipe recovery, prevent overflow well head of gushing out from causing environment pollution, thus the overall process realizing job execution is without overflow discharge.
For achieving the above object, the technical solution adopted in the utility model is: a kind of water injection well normal pressure workover treatment anti-overflow capping tools, comprise top connection, overcoat, upper sliding sleeve, low sleeve and lower contact, described top connection, overcoat and lower contact are threaded from top to bottom successively, the wall of overcoat is arranged overflow passage and underflow stream passage, upper sliding sleeve and low sleeve are fixed in overcoat respectively by pin, wherein upper sliding sleeve outer wall shutoff overflow passage, low sleeve outer wall shutoff underflow stream passage, between upper sliding sleeve and low sleeve, resiliency supported is set, the uniform vertical strip through-hole of outer wall of this resiliency supported, when sliding to instrument jacket bottom under upper sliding sleeve and low sleeve, overflow passage is opened, and underflow stream passage is communicated with the strip through-hole of resiliency supported.
The beneficial effects of the utility model: the utility model instrument is applicable to liquid shutoff in the tubing string in the conventional workover treatment of water injection well in oil fields, and oil liquid in pipe enters oil jacket annular space and prevents overflow from overflowing from oil pipe when lift pipe string, because operation overflow is all reclaimed from oil jacket annular space, reach the object of cleaning operation, greatly alleviate the pressure for environmental requirement in oil field operation production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model water injection well normal pressure workover treatment anti-overflow capping tools.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1: a kind of water injection well normal pressure workover treatment anti-overflow capping tools, comprise top connection 1, overcoat 2, upper sliding sleeve 3, low sleeve 4, lower contact 5, described top connection 1, overcoat 2 and lower contact 5 are threaded from top to bottom successively, the wall of overcoat 2 is arranged overflow passage 8 and underflow stream path 10, upper sliding sleeve 3 and low sleeve 4 are fixed in overcoat 2 respectively by pin 7, wherein upper sliding sleeve 3 outer wall shutoff overflow passage 8, low sleeve 4 outer wall shutoff underflow stream path 10, resiliency supported 6 is set between upper sliding sleeve 3 and low sleeve 4, the uniform vertical strip through-hole of outer wall of this resiliency supported 6, when upper sliding sleeve 3 and low sleeve slide to bottom overcoat 2 for 4 times, overflow passage 8 is opened, and underflow stream path 10 is communicated with the strip through-hole of resiliency supported 6.
The course of work of this device is as follows:
Throw stifled instrument plug to enter for 9 times in preset seating nipple, start lift pipe string operation, plug promotes upper sliding sleeve 3, and pin 7 is cut off, and upper sliding sleeve 3 is descending exposes overflow ducts 8, and plug upper liquid flows into oil sets annular space through this hole in lift pipe string process; Upper sliding sleeve 3 is descending, it is descending that resiliency supported 6 promotes low sleeve 4, exposes bottom overflow ducts 10, and shaft bottom liquid flows to oil jacket annular space from bottom overflow ducts 10 under the effect of bottom pressure, since then, the overflow of all down-holes all carries out clean recovery earthward from oil jacket Annular cutting.
Claims (1)
1. a water injection well normal pressure workover treatment anti-overflow capping tools, comprise top connection, overcoat, upper sliding sleeve, low sleeve and lower contact, described top connection, overcoat and lower contact are threaded from top to bottom successively, the wall of overcoat is arranged overflow passage and underflow stream passage, upper sliding sleeve and low sleeve are fixed in overcoat respectively by pin, wherein upper sliding sleeve outer wall shutoff overflow passage, low sleeve outer wall shutoff underflow stream passage, between upper sliding sleeve and low sleeve, resiliency supported is set, the uniform vertical strip through-hole of outer wall of this resiliency supported; When sliding to instrument jacket bottom under upper sliding sleeve and low sleeve, overflow passage is opened, and underflow stream passage is communicated with the strip through-hole of resiliency supported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520500396.6U CN204738787U (en) | 2015-07-10 | 2015-07-10 | Water injection well ordinary pressure workover anti -overflow flows shutoff instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520500396.6U CN204738787U (en) | 2015-07-10 | 2015-07-10 | Water injection well ordinary pressure workover anti -overflow flows shutoff instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204738787U true CN204738787U (en) | 2015-11-04 |
Family
ID=54420528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520500396.6U Expired - Fee Related CN204738787U (en) | 2015-07-10 | 2015-07-10 | Water injection well ordinary pressure workover anti -overflow flows shutoff instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204738787U (en) |
-
2015
- 2015-07-10 CN CN201520500396.6U patent/CN204738787U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20151104 Termination date: 20210710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |