CN2212068Y - Under well pipe capable of releasing and jointing - Google Patents
Under well pipe capable of releasing and jointing Download PDFInfo
- Publication number
- CN2212068Y CN2212068Y CN 94215230 CN94215230U CN2212068Y CN 2212068 Y CN2212068 Y CN 2212068Y CN 94215230 CN94215230 CN 94215230 CN 94215230 U CN94215230 U CN 94215230U CN 2212068 Y CN2212068 Y CN 2212068Y
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- CN
- China
- Prior art keywords
- releasing
- packer
- jointing
- utility
- model
- 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 provides an under well pipe column capable of releasing and jointing which is connected in series with a packer (5), a cannula (6), etc. The utility model is characterized in that the cannula (6) in the upper packer (5) is connected with the lower body (4) of a releasing and jointing device whose upper body (3) is connected with a centralizer (2) and an oil pipe or an oil well pump, and therefore, the releasing and jointing function between the pipe columns on top and bottom can be completed. The utility model can not only achieve the effects of oil production by layers and water pouring but also achieve the aim of shallow maintenance in deep wells under the condition of not moving the pipe columns below the packer (5) and the upper body (3) of the releasing and jointing device. The utility model has the advantages of easy installation and large amounts of well maintaining cost saving.
Description
The utility model relates to a kind of down-hole string that is used for petroleum recovering, water injection technology.
At present, mostly the used oil production by layer water injection technology tubing string in oil field is the some packers of series connection on the running string that oil pipe or oil extraction pump etc. are formed, and reaches the purpose of oil production by layer, gas production or packing oil, gas, water layer.When the down-hole needs operation, necessary deblocking packer, but the packer of often going into the well is owing to the time of going into the well is long, mechanism is malfunctioning and be difficult to deblocking, or separates and be honored as a queen, and trips out in the process again seat envelope midway at tubing string, some wells need drop into the huge fund overhaul for this reason, even partly packer trips out smoothly, and also must change brand-new packer into when going into the well next time, increase investment; In addition, if need can not reach the shallow purpose of repairing of deep-well with this tubing string at packer with the upper part well workover.
But task of the present utility model is to provide a kind of uncoupling down-hole string, reaches the shallow purpose of repairing of deep-well.
The utility model is that the some packers of serial connection (5) reach the intubate (6) that is tightly connected with it on the running string of compositions such as oil pipe or oil well pump, and on-off connector upper body (3) and on-off connector lower body (4) is characterized in that having connected on this tubing string.
The utility model has the advantages that: but 1 oil production by layer, water filling, but also one or more layers oil of packing, gas, water layer; 2, realize uncoupling function between upper and lower tubing string,, reach the shallow purpose of repairing of deep-well without deblocking packer, motionless bottom tubing string.3, simple installation, saved workover cost.
Accompanying drawing is tubular column structure figure of the present utility model.
The utility model is further specified as follows below in conjunction with accompanying drawing:
As shown in the figure, when oil well carries out seperated layer water injection, oil recovery, be lowered to packers at different levels (5), the intubate (6) that is tightly connected with it is housed in packer (5), the upper end of top intubate (6) and on-off connector lower body (4) are tightly connected, on-off connector upper body (3) links to each other with the centralizer of going into the well (2), tubing string or oil well pump (1), and on-off connector upper body (3) are integral with salable the spinning of on-off connector lower body (4).Production mandrel or injection allocation device (10) are housed on the tubing string (7) between packers at different levels (5), (8), (9), finish the function of oil production by layer or water filling.When workover treatment, if need not propose upper packer (5) with lower tubular column the time, rotation on-off connector upper body (3), the upper lifting pipe post just can be thrown off going up lower tubular column, reach motionless packer (5), the shallow purpose of repairing of deep-well.
Claims (3)
- But 1, a kind of uncoupling down-hole string is in series with packer (5), intubate (6) on this tubing string, and on-off connector upper body (3) and on-off connector lower body (4) is characterized in that having connected on this tubing string.
- But 2, uncoupling down-hole string according to claim 1 is characterized in that on-off connector lower body (4) links to each other with the intubate (6) of upper packer (5), and on-off connector upper body (3) link to each other with centralizer (2), oil pipe or oil extraction pump (1).
- But 3, uncoupling down-hole string according to claim 1 and 2 is characterized in that being equipped with production mandrel or injection allocation device (10) on the oil pipe (7) between the packers at different levels (5), (8), (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94215230 CN2212068Y (en) | 1994-06-21 | 1994-06-21 | Under well pipe capable of releasing and jointing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94215230 CN2212068Y (en) | 1994-06-21 | 1994-06-21 | Under well pipe capable of releasing and jointing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2212068Y true CN2212068Y (en) | 1995-11-08 |
Family
ID=33831284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94215230 Expired - Fee Related CN2212068Y (en) | 1994-06-21 | 1994-06-21 | Under well pipe capable of releasing and jointing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2212068Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343405A (en) * | 2013-07-29 | 2015-02-11 | 中国石油天然气股份有限公司 | Oil field underground circuit repeated releasing and butt joint process |
-
1994
- 1994-06-21 CN CN 94215230 patent/CN2212068Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343405A (en) * | 2013-07-29 | 2015-02-11 | 中国石油天然气股份有限公司 | Oil field underground circuit repeated releasing and butt joint process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |