CN201057007Y - Reversible loose-leaf type fishing barrel - Google Patents
Reversible loose-leaf type fishing barrel Download PDFInfo
- Publication number
- CN201057007Y CN201057007Y CNU2007201699682U CN200720169968U CN201057007Y CN 201057007 Y CN201057007 Y CN 201057007Y CN U2007201699682 U CNU2007201699682 U CN U2007201699682U CN 200720169968 U CN200720169968 U CN 200720169968U CN 201057007 Y CN201057007 Y CN 201057007Y
- Authority
- CN
- China
- Prior art keywords
- loose
- leaf
- fishing
- bailer
- concave 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 - Lifetime
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Abstract
The utility model relates to a back-off loose leaf type fishing bailer as a necessity for the oil field well maintenance industry. The fishing bailer comprises an upper connector (1), a loose leaf concave surface slip insert type assembly (2) and a bailer body (3), wherein the upper connector (1) is connected with the bailer body (3), the loose leaf concave surface slip insert type assembly (2) is arranged inside the bailer body (3), the pumping rod ledges or the couplings conforming to various standards can be normally pulled and drawn, when the tonnage pulled approaches the allowable tension force born by the pumping rod, the jam releasing cannot be operated, in order to prevent the pumping rod from being pulled off or broken, back-off treatment can be adopted when the fishing tool is used, the pumping rods in an upright position and above the free point can be taken out in a back-off way one time or times, and the application of the fishing tool changes the history that the pumping rod fishing in the petroleum industry only adopts the pulling and drawing way.
Description
Technical field
The utility model relates to the workover tool of oil field well workover industry indispensability, specifically, but is a kind of back-off loose-leaf dipper.
The prospect technology
Salvage the sucker rod under the erectility in the oilfield, the normal loose-leaf dipper that adopts, this instrument G.I.H is salvaged firmly sucker rod in the sleeve pipe annular space, take the mode put forward, and sucker rod is pulled out, continuous development along with the oil field, middle-deep well is on the increase, and occurs sand sometimes and buries, accidents such as holddown, according to normal salvaging mode, the sucker rod that is stuck in the sleeve pipe is adopted the unfreezing mode of putting forward, cause the sucker rod pull-off easily or pull off, behind rod parting, very likely cause the sucker rod in the well to pull out carefully, bending, distortion is salvaged for next time and is brought unnecessary trouble, increased accounting for the well cycle of certain hour, economic benefit has been subjected to very big influence.
Summary of the invention
But the purpose of this utility model is to provide a kind of back-off loose-leaf dipper, and it can effectively improve the sucker rod fishing success ratio, improves sucker rod salvaging, unfreezing back-off technology.
The utility model is achieved in that and comprises top connection 1, loose-leaf concave surface card dentition formula assembly 2, cylindrical shell 3 that top connection 1 is connected with cylindrical shell 3, is built-in with loose-leaf concave surface card dentition formula assembly 2 at cylindrical shell 3.
Loose-leaf concave surface card dentition formula assembly 2 is the upright tooth work plane of serration type at clamp center arc.
The tapered horn mouth in the lower end of cylindrical shell 3.
Top connection 1 bottom is tubular, and the closely-pitched internal thread is arranged on the tubular.
Top connection 1 and cylindrical shell 3 are to be threaded.
Advantage of the present utility model is: this instrument has kept the tool characteristics under original state, can normally lift sucker rod shoulder or the box cupling salvaged under the various standards, lift tonnage near sucker rod can bear pulling force allowable the time still can not unfreezing, in order to prevent the sucker rod pull-off or to pull off, use this instrument can take back-off to handle, can once or several times the erectility lower sucker rod back-off more than the stuck point be taken out, the application of this instrument, change petroleum industry and salvaged the history that sucker rod can only lift, filled up blank that sucker rod can not back-off.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
The specific embodiment
As shown in Figure 1, top connection 1 top is that drilling rod links and connects drill string, and the bottom is tubular and the closely-pitched internal thread is arranged and cylindrical shell 3 joins.Loose-leaf concave surface card dentition formula assembly 2 is installed on the upper surface of cylindrical shell 3.Loose-leaf concave surface card dentition formula assembly 2 is made up of loose-leaf seat, loose-leaf clamp, torque spring, bearing pin.2 of loose-leaf concave surface card dentition formula assemblies are welded in the cylindrical shell upper surface, and are plug-in with the flange on the loose-leaf clamp, and a bearing pin passes from the aperture on loose-leaf seat and the loose-leaf clamp.The loose-leaf clamp is pressed in the cylindrical shell upper surface by torque spring.The loose-leaf clamp is except that flange, and the microscler mouth that a width is a bit larger tham fish box cupling lower end tubing string diameter is also opened in the centre.The lower end of cylindrical shell 3 is the conical horn mouth, is convenient to introduce fish.
As shown in Figure 2, the loose-leaf clamp of former instrument is " flat " structure, can only catch on the top of fish (beam hanger box cupling or shoulder) in implementing the salvaging process and propose unfreezing.And the loose-leaf clamp of the loose-leaf concave surface card dentition formula assembly 2 after improving is " concave surface card dentition formula " structures, in implementing the salvaging process, catch and propose unfreezing on the top of fish, as still can not unfreezing during the pulling force allowable that lifts that sucker rod can bear, then can take back-off to pull the above sucker rod of stuck point out.
Claims (5)
1. but back-off loose-leaf dipper comprises top connection (1), loose-leaf concave surface card dentition formula assembly (2), cylindrical shell (3), it is characterized in that: top connection (1) is connected with cylindrical shell (3), is built-in with loose-leaf concave surface card dentition formula assembly (2) at cylindrical shell (3).
2. but back-off loose-leaf dipper according to claim 1 is characterized in that: loose-leaf concave surface card dentition formula assembly (2) is the upright tooth work plane of serration type at clamp center arc.
3. but back-off loose-leaf dipper according to claim 1 is characterized in that: the tapered horn mouth in lower end of cylindrical shell (3).
4. but back-off loose-leaf dipper according to claim 1 is characterized in that: top connection (1) bottom is tubular, and the closely-pitched internal thread is arranged on the tubular.
5. but back-off loose-leaf dipper according to claim 1 is characterized in that: top connection (1) and cylindrical shell (3) are to be threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201699682U CN201057007Y (en) | 2007-07-31 | 2007-07-31 | Reversible loose-leaf type fishing barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201699682U CN201057007Y (en) | 2007-07-31 | 2007-07-31 | Reversible loose-leaf type fishing barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057007Y true CN201057007Y (en) | 2008-05-07 |
Family
ID=39425847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201699682U Expired - Lifetime CN201057007Y (en) | 2007-07-31 | 2007-07-31 | Reversible loose-leaf type fishing barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057007Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314502A (en) * | 2014-10-29 | 2015-01-28 | 中国石油集团西部钻探工程有限公司 | Fisher for hanger of electronic pressure gauge in underground well testing operation |
| CN104373060A (en) * | 2013-08-15 | 2015-02-25 | 中国石油天然气股份有限公司 | Oil pumping rod hooking device |
| CN106869847A (en) * | 2015-12-11 | 2017-06-20 | 贵州高峰石油机械股份有限公司 | A kind of underground right-hand thread drilling tool Refloatation method and the back-off joint for being used |
-
2007
- 2007-07-31 CN CNU2007201699682U patent/CN201057007Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373060A (en) * | 2013-08-15 | 2015-02-25 | 中国石油天然气股份有限公司 | Oil pumping rod hooking device |
| CN104373060B (en) * | 2013-08-15 | 2016-05-11 | 中国石油天然气股份有限公司 | Oil pumping rod hooking device |
| CN104314502A (en) * | 2014-10-29 | 2015-01-28 | 中国石油集团西部钻探工程有限公司 | Fisher for hanger of electronic pressure gauge in underground well testing operation |
| CN106869847A (en) * | 2015-12-11 | 2017-06-20 | 贵州高峰石油机械股份有限公司 | A kind of underground right-hand thread drilling tool Refloatation method and the back-off joint for being used |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080507 |