CN204532195U - A kind of high temperature resistant expandable casing patching device - Google Patents
A kind of high temperature resistant expandable casing patching device Download PDFInfo
- Publication number
- CN204532195U CN204532195U CN201520046321.5U CN201520046321U CN204532195U CN 204532195 U CN204532195 U CN 204532195U CN 201520046321 U CN201520046321 U CN 201520046321U CN 204532195 U CN204532195 U CN 204532195U
- Authority
- CN
- China
- Prior art keywords
- expansion member
- expansion
- high temperature
- temperature resistant
- conical surface
- 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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- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a kind of high temperature resistant expandable casing patching device, comprise expansion tube, the two ends up and down of expansion tube are relatively set with two expansion member; Described expansion member is taper, and expansion member comprises guide portion and conical surface portion; Described guide portion is positioned in expansion member on the position of miner diameter end, and described guide portion is provided with some guiding grooves, and described guiding groove is evenly arranged around the axis of expansion member, forms bootstrap block between two adjacent guiding grooves; Described conical surface portion is positioned on the position of close bigger diameter end in expansion member; The external surface of bootstrap block is concordant with conical surface portion.
Description
Technical field
The utility model relates to a kind of expandable casing patching device, particularly the high temperature resistant expandable casing patching device of one.
Background technology
Expansion tube is a kind of metal steel pipe be made up of special material, had good plasticity, when expansion tube is for subsidizing sleeve pipe, first enter in casing damaged well by under the expansion tube of small diameter, under the effect of mechanical force or hydraulic coupling, make expansion tube that overall plastic expansion occur, be close on the internal surface of sleeve pipe of pit shaft, thus realize grappling and sealing.
Existing expandable casing patching device, generally include the expansion tube of band plug, expansion cone is placed in expansion tube, when need subsidize, patch device is removed to operating position together with expansion tube one, then expansion cone is extracted out, lower drill bit in well again, thus complete subsidy process; And when expansion cone is extracted out, produce larger resistance between expansion cone and expansion tube, cause inefficiency, maintenance time is long.
Summary of the invention
Problem to be solved in the utility model is to provide for the deficiencies in the prior art, and provide a kind of high temperature resistant expandable casing patching device, this is high temperature resistant, and expandable casing patching device can carry out expansion tube compensation easily, and eliminate the step again descending drill bit, maintenance efficiency is high.
For solving the problem, the technical scheme that the utility model adopts is:
A kind of high temperature resistant expandable casing patching device, comprises expansion tube, it is characterized in that: the two ends up and down of expansion tube are relatively set with two expansion member;
Described expansion member is taper, and expansion member comprises guide portion and conical surface portion;
Described guide portion is positioned in expansion member on the position of miner diameter end, and described guide portion is provided with some guiding grooves, and described guiding groove is evenly arranged around the axis of expansion member, forms bootstrap block between two adjacent guiding grooves;
Described conical surface portion is positioned on the position of close bigger diameter end in expansion member; The external surface of bootstrap block is concordant with conical surface portion.
Below the further improvement to technique scheme:
Described two expansion member are connected by oil cylinder, and described oil cylinder comprises oil cylinder housing, is provided with piston in oil cylinder housing, and described piston is connected with oil inlet pipe, and oil inlet pipe has oilhole.
The external surface of described expansion member is coated with exotic material layer.
During use, in oil inlet pipe, inject hydraulic oil, oil injects the chamber formed between oil cylinder housing and piston from oilhole, thus promotes oil cylinder housing upwards, and expansion member enters into expansion tube, completes expansion work; The utility model structure is simple, practical and convenient, and the subsidy time is than traditional shortening more than 60%.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of a kind of high temperature resistant expandable casing patching device of the utility model;
Accompanying drawing 2 is the structural representation of expansion member;
Accompanying drawing 3 is the top view of accompanying drawing 2.
In figure:
1-oil cylinder; 2-expansion tube; 3-tube connector; 4-expansion member; 41-guide portion; 42-conical surface portion; 43-passage; 44-bootstrap block; 45-path end face; 46-exotic material layer; 47-guiding groove; 5-oil inlet pipe; 6-oil cylinder housing; 61-piston; 62-oilhole.
Detailed description of the invention
Embodiment, as shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, a kind of high temperature resistant expandable casing patching device, comprises expansion tube 2, and the two ends up and down of expansion tube 2 are relatively set with two expansion member 4; Described expansion member 4 is taper, and expansion member 4 comprises guide portion 41 and conical surface portion 42; Described guide portion 41 is positioned in expansion member 4 on the position of miner diameter end, and described guide portion 41 is provided with some guiding grooves 47, and described guiding groove 47 is evenly arranged around the axis of expansion member 4, forms bootstrap block 44 between two adjacent guiding grooves 47; Described conical surface portion 42 is positioned on the position of close bigger diameter end in expansion member 4; The external surface of bootstrap block 44 is concordant with conical surface portion 42.
The resistance reduced when expansion member is extracted out that arranges of guide portion improves operating efficiency.
Described two expansion member 4 are connected by oil cylinder 1, and described oil cylinder 1 comprises oil cylinder housing 6, is provided with piston 61 in oil cylinder housing 6, and described piston 61 is connected with oil inlet pipe 5, oil inlet pipe 5 has oilhole 62.
Described oil inlet pipe 5 is through the expansion member 4 being positioned at top; Oil cylinder housing 6 is connected with the expansion member being positioned at below by tube connector 3.
The external surface of described expansion member 4 is coated with exotic material layer 46, and described exotic material layer 46 is bronze layer; Also can be other exotic material.
During use, in oil inlet pipe 5, inject hydraulic oil, oil injects from oilhole 62 chamber formed between oil cylinder housing 6 and piston 61, thus promotes oil cylinder housing 6 upwards, and expansion member 4 enters into expansion tube, completes expansion work; The utility model structure is simple, practical and convenient, and the subsidy time is than traditional shortening more than 60%.
Claims (3)
1. a high temperature resistant expandable casing patching device, comprises expansion tube (2), it is characterized in that: the two ends up and down of expansion tube (2) are relatively set with two expansion member (4);
Described expansion member (4) is taper, and expansion member (4) comprises guide portion (41) and conical surface portion (42);
It is upper on the position of miner diameter end that described guide portion (41) is positioned at expansion member (4), described guide portion (41) is provided with some guiding grooves (47), described guiding groove (47) is evenly arranged around the axis of expansion member (4), forms bootstrap block (44) between two adjacent guiding grooves (47);
It is upper on the position of bigger diameter end that described conical surface portion (42) is positioned at expansion member (4); The external surface of bootstrap block (44) is concordant with conical surface portion (42).
2. a kind of high temperature resistant expandable casing patching device as claimed in claim 1, it is characterized in that: described two expansion member (4) are connected by oil cylinder (1), described oil cylinder (1) comprises oil cylinder housing (6), piston (61) is provided with in oil cylinder housing (6), described piston (61) is connected with oil inlet pipe (5), oil inlet pipe (5) has oilhole (62).
3. a kind of high temperature resistant expandable casing patching device as claimed in claim 1, is characterized in that: the external surface of described expansion member (4) is coated with exotic material layer (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520046321.5U CN204532195U (en) | 2015-01-23 | 2015-01-23 | A kind of high temperature resistant expandable casing patching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520046321.5U CN204532195U (en) | 2015-01-23 | 2015-01-23 | A kind of high temperature resistant expandable casing patching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204532195U true CN204532195U (en) | 2015-08-05 |
Family
ID=53746218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520046321.5U Expired - Fee Related CN204532195U (en) | 2015-01-23 | 2015-01-23 | A kind of high temperature resistant expandable casing patching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204532195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630051A (en) * | 2018-03-12 | 2019-04-16 | 刘屹凡 | A kind of petroleum casing pipe chemical method prosthetic device |
-
2015
- 2015-01-23 CN CN201520046321.5U patent/CN204532195U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630051A (en) * | 2018-03-12 | 2019-04-16 | 刘屹凡 | A kind of petroleum casing pipe chemical method prosthetic device |
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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: 20150805 Termination date: 20210123 |