CN107701125A - A kind of casing expandable, which shrinks to inhale, mends device - Google Patents
A kind of casing expandable, which shrinks to inhale, mends device Download PDFInfo
- Publication number
- CN107701125A CN107701125A CN201610647422.7A CN201610647422A CN107701125A CN 107701125 A CN107701125 A CN 107701125A CN 201610647422 A CN201610647422 A CN 201610647422A CN 107701125 A CN107701125 A CN 107701125A
- Authority
- CN
- China
- Prior art keywords
- sleeve pipe
- outer cylinder
- cylinder body
- inhale
- pipe nipple
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
Abstract
The present invention, which provides a kind of casing expandable and shunk, inhales benefit device, including：Outer cylinder body, in hollow form, it is internally provided with elastic component；Sleeve pipe box pipe nipple, it is fixedly connected on the first end of the outer cylinder body；Sleeve pipe pin thread pipe nipple, its first end are engaged with the second end of the outer cylinder body, and the inside that the outer cylinder body can be entered under action of compressive stress is compressed the elastic component.Shrink to inhale the invention provides a kind of casing expandable and mend device, sleeve pipe pin thread pipe nipple is set to be extended into outer cylinder body, so as to absorb the increased casing length of heat expansion, reduce the pressure to upper sleeve, prevent from causing upper sleeve to damage, when not steam injection, temperature reduces, the cannula retraction being stretched, the length shunk is compensated by the elastomer in outer cylinder body.
Description
Technical field
The present invention relates to oil-gas mining technical field, more particularly to a kind of casing expandable to shrink to inhale and mend device, suitable for thermal recovery
Well is cemented the well, and is also applied for bottom casing high pressure operation well.
Background technology
When viscous crude field exploitation needs thermal recovery, 350 DEG C of high steam is injected into well, can be stretched because sleeve pipe is heated
Long, cement is not extended substantially, and inside pipe casing can be caused to produce compression, bad sleeve pipe is squeezed when serious or causes cement to be taken off with sleeve pipe
Open, seal failure, elongation passes well head to sleeve pipe upwards, and oil well can not produce.
The content of the invention
The features and advantages of the present invention partly state in the following description, or can from the description it is clear that or
Person can be learnt by putting into practice the present invention.
To overcome problem of the prior art, the present invention, which provides a kind of casing expandable and shunk, inhales benefit device, it is characterised in that bag
Include：Outer cylinder body, in hollow form, it is internally provided with elastic component；Sleeve pipe box pipe nipple, is fixedly connected on the first of the outer cylinder body
End；Sleeve pipe pin thread pipe nipple, its first end are engaged with the second end of the outer cylinder body, and institute can be entered under action of compressive stress
Stating the inside of outer cylinder body is compressed the elastic component.
Alternatively, the first end of described sleeve pipe pin thread pipe nipple is made of cold-press process.
Alternatively, the first end of described sleeve pipe pin thread pipe nipple is interference fitted with the outer cylinder body.
Alternatively, the first end of described sleeve pipe pin thread pipe nipple is fixed by a pin to the second end of the outer cylinder body.
Alternatively, the pin is used to cut automatically under action of compressive stress.
Alternatively, the first end of described sleeve pipe pin thread pipe nipple is provided with sealing ring.
Alternatively, the elastic component is coil type spring.
Alternatively, the both ends of the elastic component are in contact with described sleeve pipe box pipe nipple and sleeve pipe pin thread pipe nipple respectively.
Alternatively, described sleeve pipe box pipe nipple is connected through a screw thread with the outer cylinder body.
Alternatively, one end of described sleeve pipe box pipe nipple is provided with external screw thread；The first end of the outer cylinder body be provided with it is described
The internal thread that external screw thread matches.
Shrink to inhale the invention provides a kind of casing expandable and mend device, sleeve pipe pin thread pipe nipple is extended into outer cylinder body, from
And the increased casing length of heat expansion is absorbed, the pressure to upper sleeve is reduced, prevents from causing upper sleeve to damage, when not steam injection
When, temperature is reduced, the cannula retraction being stretched, and the length shunk is compensated by the elastomer in outer cylinder body.
By reading specification, the feature of these technical schemes and interior will be best understood in those of ordinary skill in the art
Hold.
Brief description of the drawings
The present invention is specifically described below with reference to accompanying drawing and with reference to example, advantages of the present invention and implementation will
More obvious, wherein content is only used for explanation of the present invention shown in accompanying drawing, without forming to the present invention in all senses
On limitation, in the accompanying drawings：
Fig. 1 is that the casing expandable of the embodiment of the present invention shrinks the structural representation inhaled and mend device.
Embodiment
As shown in figure 1, the present invention, which provides a kind of casing expandable and shunk, inhales benefit device, including：Outer cylinder body 10, in hollow form, its
Inside is provided with elastic component 40；Sleeve pipe box pipe nipple 20, it is fixedly connected on the first end of outer cylinder body 10；Sleeve pipe pin thread pipe nipple 30, its
First end 31 is engaged with the second end of outer cylinder body 10, and the inside that outer cylinder body 10 can be entered under action of compressive stress makes elasticity
Part 40 is compressed.
In the present embodiment, the first end 31 of sleeve pipe pin thread pipe nipple is fixed on the second end of outer cylinder body 10 by pin 33,
Pin 33 can be cut automatically under action of compressive stress.In order to preferably be absorbed to energy, the of sleeve pipe pin thread pipe nipple 30
One end can also be interference fitted with outer cylinder body 10, in addition, the first end 31 of sleeve pipe pin thread pipe nipple can be made of cold-press process.
To ensure to seal, sealing ring 32 can also be set in the first end 31 of sleeve pipe pin thread pipe nipple.
Usually, the both ends of elastic component 40 are in contact with sleeve pipe box pipe nipple 20 and sleeve pipe pin thread pipe nipple 30 respectively.Having
When body is implemented, elastic component is coil type spring.
In the present embodiment, sleeve pipe box pipe nipple 20 is connected through a screw thread with outer cylinder body 10.More specifically, sleeve pipe box pipe nipple
20 one end is provided with external screw thread；The first end of outer cylinder body 10 is provided with the internal thread to match with external screw thread.
When casing expandable provided by the invention, which shrinks, to be inhaled in the benefit net well of device tripping in, if sleeve pipe expanded by heating generation pressure should
Power, the then part being connected with sleeve pipe public affairs mouth pipe nipple 30 can drive the pressure-bearing of first end 31 of sleeve pipe public affairs mouth pipe nipple inwardly to extrude；If
When pressure exceedes the bearing capacity of pin 33, then pin 33 can be cut short automatically, so as to drive the first end 31 of sleeve pipe public affairs mouth pipe nipple
Compression elastic piece 40, sleeve pipe pin thread pipe nipple 30 inwardly extend, and absorb the increased casing length of heat expansion, reduce to upper sleeve
Pressure, upper sleeve will not be caused to damage, when not steam injection, temperature reduce, the cannula retraction being stretched, compensate contraction
Length.
The present invention, which provides a kind of casing expandable and shunk, inhales benefit device, in later stage steam injection recovery operation, sleeve pipe expanded by heating
Elongation, makes sleeve pipe pin thread pipe nipple inwardly extend, absorbs the increased casing length of heat expansion, reduce the pressure to upper sleeve,
Upper sleeve will not be caused to damage, when not steam injection, temperature reduces, the cannula retraction being stretched, and compensates the length of contraction.This
Invention makes being discharged by thermal stretching in underground for sleeve pipe, so as to ensure that oil well normally produces；Viscous crude field is overcome to exploit into well
During 350 DEG C of high steam of injection, sleeve pipe is caused compression caused by inside pipe casing by thermal stretching, avoid crowded bad sleeve pipe or
Cement is caused to be disengaged with sleeve pipe, seal failure, elongation passes well head, the problem that oil well can not produce to sleeve pipe upwards.
Above by reference to the preferred embodiments of the present invention have been illustrated, those skilled in the art do not depart from the scope of the present invention
And essence, there can be a variety of flexible programs to realize the present invention.For example, as the shown partially of one embodiment or description
Feature can be used for another embodiment to obtain another embodiment.Preferably feasible embodiment of the invention is these are only, not
Therefore limit to the interest field of the present invention, all equivalence changes made with description of the invention and accompanying drawing content, be both contained in
Within the interest field of the present invention.
Claims (10)
1. a kind of casing expandable, which shrinks to inhale, mends device, it is characterised in that including：
Outer cylinder body, in hollow form, it is internally provided with elastic component；
Sleeve pipe box pipe nipple, it is fixedly connected on the first end of the outer cylinder body；
Sleeve pipe pin thread pipe nipple, its first end are engaged with the second end of the outer cylinder body, and can be entered under action of compressive stress
The inside of the outer cylinder body is compressed the elastic component.
2. casing expandable, which shrinks to inhale, according to claim 1 mends device, it is characterised in that the first end of described sleeve pipe pin thread pipe nipple
It is made of cold-press process.
3. casing expandable, which shrinks to inhale, according to claim 1 mends device, it is characterised in that the first end of described sleeve pipe pin thread pipe nipple
It is interference fitted with the outer cylinder body.
4. casing expandable, which shrinks to inhale, according to claim 1 mends device, it is characterised in that the first end of described sleeve pipe pin thread pipe nipple
It is fixed by a pin to the second end of the outer cylinder body.
5. casing expandable, which shrinks to inhale, according to claim 4 mends device, it is characterised in that the pin is used in action of compressive stress
Lower automatic cutting.
6. casing expandable, which shrinks to inhale, according to claim 1 mends device, it is characterised in that the first end of described sleeve pipe pin thread pipe nipple
It is provided with sealing ring.
7. casing expandable, which shrinks to inhale, according to claim 1 mends device, it is characterised in that the elastic component is coil type spring.
8. inhaled according to the described sleeve pipe dilation of claim 1 or 7 and mend device, it is characterised in that the both ends difference of the elastic component
It is in contact with described sleeve pipe box pipe nipple and sleeve pipe pin thread pipe nipple.
9. casing expandable, which shrinks to inhale, according to claim 1 mends device, it is characterised in that described sleeve pipe box pipe nipple with it is described outer
Cylinder is connected through a screw thread.
10. inhaled according to the described sleeve pipe dilation of claim 1 or 9 and mend device, it is characterised in that the one of described sleeve pipe box pipe nipple
End is provided with external screw thread；The first end of the outer cylinder body is provided with the internal thread to match with the external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610647422.7A CN107701125A (en) | 2016-08-09 | 2016-08-09 | A kind of casing expandable, which shrinks to inhale, mends device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610647422.7A CN107701125A (en) | 2016-08-09 | 2016-08-09 | A kind of casing expandable, which shrinks to inhale, mends device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107701125A true CN107701125A (en) | 2018-02-16 |
Family
ID=61168367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610647422.7A Pending CN107701125A (en) | 2016-08-09 | 2016-08-09 | A kind of casing expandable, which shrinks to inhale, mends device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107701125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331552A (en) * | 2018-04-09 | 2018-07-27 | 中国石油化工股份有限公司 | Tensile stress intensifying device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5441310A (en) * | 1994-03-04 | 1995-08-15 | Fmc Corporation | Cement head quick connector |
| CN201125680Y (en) * | 2007-11-07 | 2008-10-01 | 无锡浩安科技发展有限公司 | Slips type casing tube anti-break telescopic pipe |
| CN202417327U (en) * | 2011-12-13 | 2012-09-05 | 中国石油集团长城钻探工程有限公司 | Telescopic rotation device for well completion of branch well |
| CN203756066U (en) * | 2014-02-20 | 2014-08-06 | 贵州盘江煤层气开发利用有限责任公司 | Adjustable sleeve joint |
| CN105587282A (en) * | 2016-01-28 | 2016-05-18 | 太仓市高泰机械有限公司 | Casing head for thermal recovery of thick oil |
-
2016
- 2016-08-09 CN CN201610647422.7A patent/CN107701125A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5441310A (en) * | 1994-03-04 | 1995-08-15 | Fmc Corporation | Cement head quick connector |
| CN201125680Y (en) * | 2007-11-07 | 2008-10-01 | 无锡浩安科技发展有限公司 | Slips type casing tube anti-break telescopic pipe |
| CN202417327U (en) * | 2011-12-13 | 2012-09-05 | 中国石油集团长城钻探工程有限公司 | Telescopic rotation device for well completion of branch well |
| CN203756066U (en) * | 2014-02-20 | 2014-08-06 | 贵州盘江煤层气开发利用有限责任公司 | Adjustable sleeve joint |
| CN105587282A (en) * | 2016-01-28 | 2016-05-18 | 太仓市高泰机械有限公司 | Casing head for thermal recovery of thick oil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331552A (en) * | 2018-04-09 | 2018-07-27 | 中国石油化工股份有限公司 | Tensile stress intensifying device |
| CN108331552B (en) * | 2018-04-09 | 2024-04-12 | 中国石油化工股份有限公司 | Tensile stress reinforcing device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180216 |