CN202544811U - Double-stage constant pressure type oil pipe constant pressure device - Google Patents
Double-stage constant pressure type oil pipe constant pressure device Download PDFInfo
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- CN202544811U CN202544811U CN 201220135941 CN201220135941U CN202544811U CN 202544811 U CN202544811 U CN 202544811U CN 201220135941 CN201220135941 CN 201220135941 CN 201220135941 U CN201220135941 U CN 201220135941U CN 202544811 U CN202544811 U CN 202544811U
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- oil pipe
- pressure
- constant pressure
- type oil
- inner sleeve
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Abstract
The utility model relates to the technical field of underblance well completion and belongs to a double-stage constant pressure type oil pipe constant pressure device, which comprises a body and a lifting basket, wherein internal screw threads are arranged at the left part of the body, at least one radial through hole is arranged at the right part of the lifting basket, the outer side of the right part of the body and the inner side of the left part of the lifting basket are fixedly connected, and a plug capable of being opened at the limited pressure is fixedly connected with the right part of the body. The double-stage constant pressure type oil pipe constant pressure device has the advantages that the structure is reasonable and compact, the use is convenient, the goal of preventing underground fluid from spraying out from an oil pipe string is realized through the matched use of a shearing nail, an inner sleeve, a constant pressure blind plate and the lifting basket, and the double-stage constant pressure type oil pipe constant pressure device has the characteristics that the production cost is low, the operation is simple, and the work efficiency is improved.
Description
Technical field
the utility model relates to the insufficient balance well completion technical field, is a kind of twin-stage constant-pressure type oil pipe constant pressure arrangement.
Background technology
are under implementing insufficient balance well completion during the oil pipe operation; The shaft bottom head of liquid is less than formation pore fluid pressure, and formation fluid gets into pit shaft controlledly, oil gas in oil pipe or oil sets annular space return out; Annular space has on swivel control head or the rotating blowout preventer control fluid and returns; If do not take blowout prevention procedure, gently then influence normal construction in the oil pipe, heavy then the well control accident occurs.Meanwhile; Not kill-job removes the string technology develop rapidly in the conventional workover treatment; Each oil field is depressed the oil pipe technology to band and is relatively favored; Yet the tubing plug pattern that uses with pressuring oil pipe at present is single, complex structure, expensive, operation are loaded down with trivial details, is seriously restricting the development that band is depressed string technology.
Summary of the invention
the utility model provides a kind of twin-stage constant-pressure type oil pipe constant pressure arrangement, has overcome the deficiency of above-mentioned prior art, and it can effectively solve, and the existing apparatus pattern is single, complex structure, expensive and the loaded down with trivial details problem of operation.
The technical scheme of
the utility model realizes through following measure: a kind of twin-stage constant-pressure type oil pipe constant pressure arrangement comprises body and hand basket; Left part at body has internal thread, at the right part of hand basket at least one radial direction through hole is arranged, and the right part outside of body and the left part inboard of hand basket are fixed together, and is fixedly connected with the plug that can under qualification pressure, open at the right part of body.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
above-mentioned plug and body can be fixed together through shear pin.
above-mentioned plug can comprise inner sleeve and level pressure blind plate, is fixed with the level pressure blind plate at the right-hand member of inner sleeve, and the outside of inner sleeve and the inboard of body are fixed together through shear pin.
On the level pressure blind plate left side of
above-mentioned corresponding inner sleeve inwall right end position inner groovy can be arranged.
On the level pressure blind plate right side of
above-mentioned corresponding inner sleeve inwall right end position outer groove can be arranged.
On the level pressure blind plate left side of
above-mentioned corresponding inner sleeve inwall right end position with on the right side inner groovy and outer groove can be arranged respectively.
above-mentioned hand basket and body can be fixed together through screw thread.
are above-mentioned can be equipped with sealing ring between inner sleeve and body.
the utility model reasonable and compact in structure; Easy to use, through being used of shear pin, inner sleeve, level pressure blind plate and hand basket, realize preventing the purpose that downhole fluid sprays in the oil pipe string; Have the low and characteristics simple to operate of cost of production, improved operating efficiency.
Description of drawings
accompanying drawing 1 is looked the broken section structural representation for the master of the utility model most preferred embodiment.
Coding in
accompanying drawing is respectively: 1 is body, and 2 is hand basket, and 3 is through hole, and 4 is shear pin, and 5 is inner sleeve, and 6 is the level pressure blind plate, and 7 is inner groovy, and 8 is outer groove, and 9 is sealing ring.
The specific embodiment
the utility model does not receive the restriction of following embodiment, can confirm concrete embodiment according to the technical scheme and the actual conditions of the utility model.
are in the utility model; For the ease of describing; The description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description, as: the position relation of forward and backward, upper and lower, left and right etc. is what to confirm according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
shown in accompanying drawing 1, this twin-stage constant-pressure type oil pipe constant pressure arrangement comprises body 1 and hand basket 2; Left part at body 1 has internal thread, at the right part of hand basket 2 at least one radial direction through hole 3 is arranged, and the right part outside of body 1 and the left part inboard of hand basket 2 are fixed together, and is fixedly connected with the plug that can under qualification pressure, open at the right part of body 1.
Can according to actual needs above-mentioned twin-stage constant-pressure type oil pipe constant pressure arrangement be done further to optimize or/and improve:
Shown in accompanying drawing 1, plug and body 1 are fixed together through shear pin 4
.Like this, be convenient under the pressure that limits, cut off shear pin 4, plug breaks away from body 1 and falls into hand basket 2 intracavity bottoms, and body 1 inner chamber is connected with hand basket 2 outsides through radial direction through hole 3.
shown in accompanying drawing 1, plug comprises inner sleeve 5 and level pressure blind plate 6, is fixed with level pressure blind plate 6 at the right-hand member of inner sleeve 5, and the inboard of the outside of inner sleeve 5 and body 1 is fixed together through shear pin 4.
have inner groovy 7 on level pressure blind plate 6 left sides of corresponding inner sleeve 5 inwall right end position shown in accompanying drawing 1.Level pressure blind plate 6 is easy to from inner groovy 7 fractures body 1 inner chamber is connected with hand basket 2 outsides through inner sleeve 5 inner chambers, fracture port place and radial direction through hole 3 under the pressure that limits.
have outer groove 8 on level pressure blind plate 6 right sides of corresponding inner sleeve 5 inwall right end position shown in accompanying drawing 1.Level pressure blind plate 6 is easy to from outer groove 8 fractures body 1 inner chamber is connected with hand basket 2 outsides through inner sleeve 5 inner chambers, fracture port place and radial direction through hole 3 under the pressure that limits.
have inner groovy 7 and outer groove 8 respectively on level pressure blind plate 6 left sides of corresponding inner sleeve 5 inwall right end position with on the right side shown in accompanying drawing 1.Level pressure blind plate 6 preferably is connected as a single entity with inner sleeve 5; Process through turnning and milling; Like this; Level pressure blind plate 6 is easy to from inner groovy 7 or outer groove 8 under the pressure that limits, perhaps inner groovy 7 and outside groove 8 places suppress disconnectedly simultaneously, body 1 inner chamber is connected with hand basket 2 outsides through inner sleeve 5 inner chambers, fracture port place and radial direction through hole 3.The breakdown pressure value of shear pin 4 and level pressure blind plate 6 is set at equal force value, can guarantee the reliability that spool was opened when direct circulation was suppressed.
Shown in accompanying drawing 1, hand basket 2 and body 1 are fixed together through screw thread
.Like this, be convenient to dismounting between hand basket 2 and the body 1.
are equipped with sealing ring 9 between inner sleeve 5 and body 1 shown in accompanying drawing 1.Like this, be convenient to sealing between inner sleeve 5 and the body 1.
above technical characterictic has constituted the most preferred embodiment of the utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of
the utility model most preferred embodiment: during use; The utility model left end is installed in up between the pump seat and sand control screen of completion oil pipe string, swivel control head and band depress pipe string devices etc. auxiliary accomplish down under the oil pipe operation; Oil pipe string is down to the precalculated position; Seat oil sealing pipe hanger, oil recovery (gas) tree; Suppress through the oil pipe direct circulation, the pressure fluid in the oil pipe builds the pressure behind the preset pressure value, and pressure fluid promotes plug and moves to right the shear pin 4 that connects between inner sleeve 5 and the body 1 is cut off; Perhaps pressure fluid with level pressure blind plate 6 inner groovy 7 or outside groove 8 places destroy and form fracture port; Thereby body 1 inner chamber is connected with hand basket 2 outsides through inner sleeve 5 inner chambers and radial direction through hole 3, has realized that the oil pipe internal and external channel is communicated with, the oil gas well is directly gone into operation.
Claims (9)
1. a twin-stage constant-pressure type oil pipe constant pressure arrangement is characterized in that comprising body and hand basket; Left part at body has internal thread, at the right part of hand basket at least one radial direction through hole is arranged, and the right part outside of body and the left part inboard of hand basket are fixed together, and is fixedly connected with the plug that can under qualification pressure, open at the right part of body.
2. twin-stage constant-pressure type oil pipe constant pressure arrangement according to claim 1 is characterized in that plug and body are fixed together through shear pin.
3. twin-stage constant-pressure type oil pipe constant pressure arrangement according to claim 2 is characterized in that plug comprises inner sleeve and level pressure blind plate, is fixed with the level pressure blind plate at the right-hand member of inner sleeve, and the outside of inner sleeve and the inboard of body are fixed together through shear pin.
4. twin-stage constant-pressure type oil pipe constant pressure arrangement according to claim 3 is characterized in that on the level pressure blind plate left side of corresponding inner sleeve inwall right end position inner groovy being arranged.
5. twin-stage constant-pressure type oil pipe constant pressure arrangement according to claim 3 is characterized in that on the level pressure blind plate right side of corresponding inner sleeve inwall right end position outer groove being arranged.
6. twin-stage constant-pressure type oil pipe constant pressure arrangement according to claim 3 is characterized in that on the level pressure blind plate left side of corresponding inner sleeve inwall right end position with on the right side inner groovy and outer groove being arranged respectively.
7. according to claim 1 or 2 or 3 or 4 or 5 or 6 described twin-stage constant-pressure type oil pipe constant pressure arrangements, it is characterized in that hand basket and body are fixed together through screw thread.
8. according to claim 3 or 4 or 5 or 6 described twin-stage constant-pressure type oil pipe constant pressure arrangements, it is characterized in that between inner sleeve and the body sealing ring being installed.
9. twin-stage constant-pressure type oil pipe constant pressure arrangement according to claim 7 is characterized in that between inner sleeve and the body sealing ring being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220135941 CN202544811U (en) | 2012-04-01 | 2012-04-01 | Double-stage constant pressure type oil pipe constant pressure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220135941 CN202544811U (en) | 2012-04-01 | 2012-04-01 | Double-stage constant pressure type oil pipe constant pressure device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202544811U true CN202544811U (en) | 2012-11-21 |
Family
ID=47165463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220135941 Expired - Fee Related CN202544811U (en) | 2012-04-01 | 2012-04-01 | Double-stage constant pressure type oil pipe constant pressure device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202544811U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696964A (en) * | 2015-09-28 | 2016-06-22 | 梁伟成 | Blowout prevention protection packer |
| CN105952410A (en) * | 2016-07-15 | 2016-09-21 | 克拉玛依胜利高原机械有限公司 | Underground blockage device of casing pressure balanced working method |
| CN107304661A (en) * | 2016-04-19 | 2017-10-31 | 中国石油天然气股份有限公司 | Single-flow valve assembly, gas lift valve, gas lift tool and integrated tubular column |
| CN109577912A (en) * | 2018-12-27 | 2019-04-05 | 中国石油集团西部钻探工程有限公司 | Jet-preventing tool and a formula underbalance combine oil production method in oil pipe under underbalance |
-
2012
- 2012-04-01 CN CN 201220135941 patent/CN202544811U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696964A (en) * | 2015-09-28 | 2016-06-22 | 梁伟成 | Blowout prevention protection packer |
| CN107304661A (en) * | 2016-04-19 | 2017-10-31 | 中国石油天然气股份有限公司 | Single-flow valve assembly, gas lift valve, gas lift tool and integrated tubular column |
| CN105952410A (en) * | 2016-07-15 | 2016-09-21 | 克拉玛依胜利高原机械有限公司 | Underground blockage device of casing pressure balanced working method |
| CN109577912A (en) * | 2018-12-27 | 2019-04-05 | 中国石油集团西部钻探工程有限公司 | Jet-preventing tool and a formula underbalance combine oil production method in oil pipe under underbalance |
| CN109577912B (en) * | 2018-12-27 | 2024-03-01 | 中国石油天然气集团有限公司 | Blowout prevention tool in underbalanced lower oil pipe and one-pass underbalanced combined oil extraction method |
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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: 20121121 Termination date: 20210401 |