CN201474640U - Novel spiral expansion cone - Google Patents
Novel spiral expansion cone Download PDFInfo
- Publication number
- CN201474640U CN201474640U CN2009201616797U CN200920161679U CN201474640U CN 201474640 U CN201474640 U CN 201474640U CN 2009201616797 U CN2009201616797 U CN 2009201616797U CN 200920161679 U CN200920161679 U CN 200920161679U CN 201474640 U CN201474640 U CN 201474640U
- Authority
- CN
- China
- Prior art keywords
- expansion
- expansion cone
- connecting rod
- expandable tubular
- sizing
- 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 novel spiral expansion cone for a petroleum and natural gas completion well, which mainly comprises a connecting rod (1) sleeved in an expansion tube (2), an expansion cone body (3) connected with the lower end of the connecting rod (1) and a plug (7) for sealing the expansion tube (2); the expansion cone body (3) is divided into three parts from down to up, i.e. a secondary sizing part (6), a primary sizing part (5) and a threaded expansion area (4); the threaded expansion area (4) is an inclined conical surface with a spiral groove on the outer surface; the outer diameter of the primary sizing part (5) is smaller than that of the secondary sizing part (6); the inner cavity of the lower end of the expansion tube (2) is suitable for the secondary sizing part (6) and the primary sizing part (5) of the expansion cone body (3) and the inclined conical surface of the threaded expansion area (4); and the part of the expansion tube (2), above the inclined conical surface, is in a conventional tubular shape. The novel spiral expansion cone has the advantages of reasonable and compact structure, convenient operation, safety and reliability.
Description
Technical field
The utility model relates to the expansion cone that expandable tubular is used that is suitable for that the solid completion of petroleum gas uses, and particularly can reduce a kind of novel spiral expansion cone of expansion frictional force, belongs to the downhole tool class.
Background technology
Bulged tube technology is a kind of technology that the beginning of the nineties, development abroad was got up, in drilling well, completion, workover treatment, all be widely used, wherein the expansion technique of expandable tubular is to realize the key technology of expansion tube completion or workover treatment, domesticly mainly expandable tubular is expanded, finish the subsidy operation of sleeve pipe with expansion cone.Push-and-pull of using or hydraulic buckling awl contact area with expansion tube in expansion process is bigger at present, suitably reduce the suffered frictional force that expands although can add lubricant medium to cone, but the frictional force that produces in expansion process is still very big, frictional force when expanding in order to overcome, have to improve axial mechanical force and hydraulic coupling, this has also just brought bigger difficulty and potential safety hazard to construction operation.On the other hand, owing to exist the situation of expansion tube rebound deformation after expanding, so the actual expansion amplitude of expansion tube often can not reach designing requirement.
Summary of the invention
For overcoming the deficiency of above-mentioned technology, the utility model provides a kind of novel spiral expansion cone, can reduce the frictional force when expanding significantly, also can reduce the situation of expansion tube expansion back resilience.
For achieving the above object, the technical solution adopted in the utility model is: main by the connecting rod that is enclosed within the expandable tubular, being connected the expansion cone body of connecting rod lower end and the plug of shutoff expandable tubular forms, the expansion cone body is divided into the secondary sizing from bottom to top, three parts in one-level sizing and threaded expander district, the spiral breathing space is that scalene cone and appearance have spiral groove, the external diameter of one-level sizing is less than the external diameter of secondary sizing, the secondary sizing of expandable tubular lower end inner chamber and expansion cone body, the scalene cone in one-level sizing and threaded expander district is suitable, and expandable tubular is conventional tubulose more than scalene cone.
Connecting rod and expansion cone body can be integral structure, also can be to be divided into two assemblies and to adopt being threaded.
Advantage of the present utility model is: simple in structure, be easy to processing and operation.
Description of drawings
Fig. 1 the utility model structural representation.
Specific embodiments
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Below in conjunction with accompanying drawing the utility model is described in further details.
The utility model is mainly by the connecting rod 1 that is enclosed within the expandable tubular 2, being connected the expansion cone body 3 of connecting rod 1 lower end and the plug 7 of shutoff expandable tubular 2 forms, expansion cone body 3 is divided into secondary sizing 6 from bottom to top, 4 three parts in one-level sizing 5 and threaded expander district, there is spiral groove spiral breathing space 4 for scalene cone and appearance, the external diameter of one-level sizing 5 is less than the external diameter of secondary sizing 6, the secondary sizing 6 of expandable tubular 2 lower end inner chambers and expansion cone body 3, the scalene cone in one-level sizing 5 and threaded expander district 4 is suitable, and expandable tubular 2 is conventional tubulose more than scalene cone.
Connecting rod 1 and expansion cone body 3 can be integral structure, also can be to be divided into two assemblies and to adopt being threaded.Connecting rod 1 and expansion cone body 3 are integral structure in the present embodiment.
Operating principle of the present utility model: during enforcement, plug 7 is connected expandable tubular 2 ends, the packing expansion tube, on carry connecting rod 1, spiral breathing space 4 is contact expandable tubular 2 conventional tubular portions earlier, force its expansion, owing to adopt the spiral-shaped frictional force that reduced, expandable tubular 2 prolonged expansions, one-level sizing 5 upwards continue to force expandable tubular 2 to expand, and are that secondary sizing 6 continues to finish expansion then.
Claims (2)
1. novel spiral expansion cone, it is characterized in that: mainly by the connecting rod (1) that is enclosed within the expandable tubular (2), being connected the expansion cone body (3) of connecting rod (1) lower end and the plug (7) of shutoff expandable tubular (2) forms, expansion cone body (3) is divided into secondary sizing (6) from bottom to top, (4) three parts in one-level sizing (5) and threaded expander district, there is spiral groove spiral breathing space (4) for scalene cone and appearance, the external diameter of one-level sizing (5) is less than the external diameter of secondary sizing (6), the secondary sizing (6) of expandable tubular (2) lower end inner chamber and expansion cone body (3), the scalene cone of one-level sizing (5) and threaded expander district (4) is suitable, and expandable tubular (2) is conventional tubulose more than scalene cone.
2. according to the described a kind of novel spiral expansion cone of claim, it is characterized in that: connecting rod (1) and expansion cone body (3) can be integral structure, also can be to be divided into two assemblies and to adopt being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201616797U CN201474640U (en) | 2009-07-14 | 2009-07-14 | Novel spiral expansion cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201616797U CN201474640U (en) | 2009-07-14 | 2009-07-14 | Novel spiral expansion cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201474640U true CN201474640U (en) | 2010-05-19 |
Family
ID=42410888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201616797U Expired - Fee Related CN201474640U (en) | 2009-07-14 | 2009-07-14 | Novel spiral expansion cone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201474640U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742093A (en) * | 2013-12-27 | 2014-04-23 | 中国石油天然气股份有限公司 | Bionic abrasion-resistant expansion cone and manufacturing method thereof |
| CN103742094A (en) * | 2013-12-27 | 2014-04-23 | 中国石油天然气股份有限公司 | Wear-resistant expansion cone and machining method thereof |
| CN103790536A (en) * | 2014-01-03 | 2014-05-14 | 中国石油天然气股份有限公司 | Expansion cone |
-
2009
- 2009-07-14 CN CN2009201616797U patent/CN201474640U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742093A (en) * | 2013-12-27 | 2014-04-23 | 中国石油天然气股份有限公司 | Bionic abrasion-resistant expansion cone and manufacturing method thereof |
| CN103742094A (en) * | 2013-12-27 | 2014-04-23 | 中国石油天然气股份有限公司 | Wear-resistant expansion cone and machining method thereof |
| CN103790536A (en) * | 2014-01-03 | 2014-05-14 | 中国石油天然气股份有限公司 | Expansion cone |
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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: 20100519 Termination date: 20160714 |