CN201162498Y - Splicing mechanism of expansion prick - Google Patents
Splicing mechanism of expansion prick Download PDFInfo
- Publication number
- CN201162498Y CN201162498Y CNU2008200788700U CN200820078870U CN201162498Y CN 201162498 Y CN201162498 Y CN 201162498Y CN U2008200788700 U CNU2008200788700 U CN U2008200788700U CN 200820078870 U CN200820078870 U CN 200820078870U CN 201162498 Y CN201162498 Y CN 201162498Y
- Authority
- CN
- China
- Prior art keywords
- expansion cone
- connecting rod
- expansion
- jump ring
- groove
- 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 - Lifetime
Links
Abstract
The utility model provides an expansion cone insertion mechanism which comprises an expansion cone and a connecting rod, wherein the upper end of the connecting rod is connected with the lower end of the expansion cone; the upper end of the connecting rod is provided with an internal thread; the outer peripheral surface of the lower end of the expansion cone is provided with a seal groove, wherein the seal groove is provided with a seal ring. The lower part of the connecting rod is provided with a narrow neck which works with the axial hole of the expansion cone in a sliding way; a clamp spring groove is arranged on the lower part of the axial hole of the expansion cone; the outer peripheral surface of the lower part of the narrow neck is provided with a clamp spring groove which matches the above-mentioned circular clip grove, wherein a clamp spring is arranged in the clamp spring groove; the upper part of the peripheral surface of the narrow neck is provided with a circular seal groove and a seal ring; the top end of the axial hole of the expansion cone is provided with an expansion opening. The expansion cone insertion mechanism provided by the utility model has the advantages that the process of the connecting operation is simplified; the firm and sealing connection between the expansion tube and the oil pipe is realized more rapidly and conveniently. The expansion cone insertion mechanism also solves the problem that the long segment of the expansion tube cannot be connected with the oil pipe when the expansion tube is dropped down.
Description
Technical field
The utility model relates in a kind of oil exploitation process the maintenance of equipment of drilling well, specifically is a kind of expansion cone plug-in connection, is used for long section expansion tube tubing string and transfers being connected of process expansion tube and oil pipe in construction.
Background technology
The bindiny mechanism of expansion tube and oil pipe is that the expansion tube sleeve pipe is repaired important coupling part in the integral device.It mainly acts on is to connect expansion cone and oil pipe reliably, realizes sealing under the duty of high pressure, and cooperates the pressure effect that expansion cone is proposed the expansion tube body.Prior art is the expansion cone threaded connection, and its shortcoming is to need screw thread butt joint and screw thread school tightly to wait operation in construction, needs complex operations, may influence sealing performance as misoperation.
Summary of the invention
The purpose of this utility model just provides a kind of expansion cone plug-in connection, tightly waits operation with need in construction screw thread butt joint and screw thread school that the solution prior art exists, needs complex operations, may influence the problem of sealing performance as misoperation.
The technical solution of the utility model is: comprise expansion cone and connecting rod, the upper end of connecting rod is connected the lower end of expansion cone, upper end at this connecting rod is provided with internal thread, outer peripheral face in the lower end of this expansion cone is provided with seal groove, in the sealing groove, O-ring seals is housed, it is characterized in that: be provided with thin neck in the bottom of described connecting rod and be slidingly matched with the axle center hole of described expansion cone, bottom at the axle center hole of this expansion cone is provided with the jump ring annular groove, lower, outer perimeter face at described thin neck is provided with the jump ring annular groove corresponding with this jump ring annular groove, in this jump ring annular groove jump ring is housed; Be provided with annular seal groove and sealing ring on the top of described thin neck outer peripheral face, be provided with extension mouth in the upper end of described expansion cone axle center hole.
Spacing ring is equipped with in upper end at the thin neck of described connecting rod, and this spacing ring is combined by two semi-rings or a plurality of segmental arc.
The utility model has the advantages that: compare with the expansion cone threaded connection, this expansion cone plug-in connection is then simple to operate relatively, as long as connecting rod is inserted expansion cone, jump ring is embedded in the jump ring annular groove, connecting rod is formed with expansion cone be connected, and realize sealing by the effect of O-ring seals.Simplified the attended operation operation, conveniently realize expansion tube and oil pipe firmly, being connected of sealing.And solved long section expansion tube tubing string and transferred the difficult problem that expansion tube and oil pipe can't be connected simultaneously in the process in construction.
Description of drawings
Fig. 1 is a general structure cross-sectional schematic of the present utility model.
The specific embodiment
Referring to Fig. 1, the utility model comprises expansion cone 1 and connecting rod 5, and the upper end of connecting rod 5 is connected the lower end of expansion cone 1, is provided with internal thread 6 in the upper end of this connecting rod 5, outer peripheral face in the lower end of this expansion cone 1 is provided with seal groove, and O-ring seals 7 is housed in the sealing groove.Be provided with thin neck 51 in the bottom of described connecting rod 5, the external diameter of this thin neck 51 also is slidingly matched with the internal diameter of the axle center hole of described expansion cone 1, is provided with jump ring annular groove 10 in the bottom of the axle center hole of this expansion cone 1.Be provided with the jump ring annular groove 52 corresponding at the lower, outer perimeter face of described thin neck 51, in this jump ring annular groove 52, jump ring 2 be housed with this jump ring annular groove 10.Top at described thin neck 51 outer peripheral faces is provided with annular seal groove, and sealing ring 8 is housed in this annular seal groove, is provided with extension mouth 9 (chamfering) in the upper end of described expansion cone 1 axle center hole.
Spacing ring 3 is equipped with in upper end at the outer peripheral face of described thin neck 51, and this spacing ring 3 is combined by two semi-rings or a plurality of segmental arc, and is fixed on screw 4 on the thin neck of connecting rod 5.
The utility model is placed in expansion cone 1 in the emission cavity of expansion tube in use in advance.The screw thread 6 and the oil pipe screwed connection of connecting rod 5 upper ends, when the expansion tube tubing string after well head is placed, oil pipe is put into downwards in the expansion tube tubing string together with connecting rod 5, when connecting rod 5 is put into expansion cone 1 extension mouth 9 suitable for reading, be subjected to the effect of gravity, jump ring 2 shrinks downwards and enters in the expansion cone 1, when the jump ring annular groove 10 in the jump ring 2 arrival expansion cone 1, jump ring 2 opens automatically, be embedded in the jump ring annular groove 10, connecting rod 5 is formed with expansion cone 1 be connected, owing in the seal groove O-ring seals 8 is housed, so reach sealing between expansion cone 1 and the connecting rod 5.
Claims (2)
1, a kind of expansion cone plug-in connection, comprise expansion cone and connecting rod, the upper end of connecting rod is connected the lower end of expansion cone, upper end at this connecting rod is provided with internal thread, outer peripheral face in the lower end of this expansion cone is provided with seal groove, in the sealing groove, O-ring seals is housed, it is characterized in that: be provided with thin neck in the bottom of described connecting rod and be slidingly matched with the axle center hole of described expansion cone, bottom at the axle center hole of this expansion cone is provided with the jump ring annular groove, lower, outer perimeter face at described thin neck is provided with the jump ring annular groove corresponding with this jump ring annular groove, in this jump ring annular groove jump ring is housed; Be provided with annular seal groove and sealing ring on the top of described thin neck outer peripheral face, be provided with extension mouth in the upper end of described expansion cone axle center hole.
2, expansion cone plug-in connection according to claim 1 is characterized in that: spacing ring is equipped with in the upper end at the thin neck of described connecting rod, and this spacing ring is combined by two semi-rings or a plurality of segmental arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200788700U CN201162498Y (en) | 2008-01-31 | 2008-01-31 | Splicing mechanism of expansion prick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200788700U CN201162498Y (en) | 2008-01-31 | 2008-01-31 | Splicing mechanism of expansion prick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162498Y true CN201162498Y (en) | 2008-12-10 |
Family
ID=40183436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200788700U Expired - Lifetime CN201162498Y (en) | 2008-01-31 | 2008-01-31 | Splicing mechanism of expansion prick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201162498Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015934A (en) * | 2012-12-18 | 2013-04-03 | 中国石油天然气股份有限公司 | Connecting rod structure with demountable expansion cone |
| CN103089186A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气股份有限公司 | Plug-in type expansion head |
| CN103696718A (en) * | 2013-12-19 | 2014-04-02 | 中国石油天然气股份有限公司 | Method and device for repairing double-clamping-sleeve of expansion pipe of long section of casing damage well in layered partition manner |
| CN106285540A (en) * | 2015-06-01 | 2017-01-04 | 中国石油天然气股份有限公司 | Coal bed gas well casing repairing method |
| CN108360982A (en) * | 2018-03-22 | 2018-08-03 | 中国石油天然气集团有限公司 | A kind of banjo fixing butt jointing and the expansion pipe column with banjo fixing butt jointing |
| CN108825146A (en) * | 2018-07-04 | 2018-11-16 | 中海艾普油气测试（天津）有限公司 | A kind of erection joint and installation method for deepwater semisubmersible platform exploration test jobs well head testing tree |
-
2008
- 2008-01-31 CN CNU2008200788700U patent/CN201162498Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089186A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气股份有限公司 | Plug-in type expansion head |
| CN103089186B (en) * | 2011-11-03 | 2016-03-09 | 中国石油天然气股份有限公司 | Plug-in type expansion-head |
| CN103015934A (en) * | 2012-12-18 | 2013-04-03 | 中国石油天然气股份有限公司 | Connecting rod structure with demountable expansion cone |
| CN103696718A (en) * | 2013-12-19 | 2014-04-02 | 中国石油天然气股份有限公司 | Method and device for repairing double-clamping-sleeve of expansion pipe of long section of casing damage well in layered partition manner |
| CN106285540A (en) * | 2015-06-01 | 2017-01-04 | 中国石油天然气股份有限公司 | Coal bed gas well casing repairing method |
| CN108360982A (en) * | 2018-03-22 | 2018-08-03 | 中国石油天然气集团有限公司 | A kind of banjo fixing butt jointing and the expansion pipe column with banjo fixing butt jointing |
| CN108825146A (en) * | 2018-07-04 | 2018-11-16 | 中海艾普油气测试（天津）有限公司 | A kind of erection joint and installation method for deepwater semisubmersible platform exploration test jobs well head testing tree |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081210 |
|
| CX01 | Expiry of patent term |