CN104712282A - Coalbed methane ground well slender rod fisher - Google Patents
Coalbed methane ground well slender rod fisher Download PDFInfo
- Publication number
- CN104712282A CN104712282A CN201510060534.8A CN201510060534A CN104712282A CN 104712282 A CN104712282 A CN 104712282A CN 201510060534 A CN201510060534 A CN 201510060534A CN 104712282 A CN104712282 A CN 104712282A
- Authority
- CN
- China
- Prior art keywords
- fisher
- cylindrical shell
- salvaging
- coal bed
- bed gas
- 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
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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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
Abstract
The invention discloses a coalbed methane ground well slender rod fisher which comprises a cylindrical fisher cylinder. The lower end of the fisher cylinder is provided with a fishing head for fishing slender rod pieces. The fishing head comprises a fishing opening formed in the side wall of the fisher cylinder. The fisher is simple in structure and capable of being machined and manufactured conveniently in the construction site.
Description
Technical field
The present invention relates to geological prospecting apparatus field, be specifically related to a kind of coal bed gas surface well elongate rod fisher.
Background technology
In the drillng operation of hydrogeologic prospecting, the faults such as drill rod breaking can happen occasionally, and after fault occurs, generally all with salvaging utensil, fracture drilling rod is taken out, otherwise not only will throw away the breaking of rod, the wellhole of boring also will be scrapped, and loses very large.Salvaging utensil the most frequently used is at present at a pull bar front end installing screw tap, stretches into screw tap after in well and screws in tapping in fracture drilling rod upper port, salvaging pull bar is connected with fracture drilling rod, more upwards lifting.This mode also exists the problems such as location is inaccurate, docking time is long, bond strength is not enough, and success rate is lower.When salvaging unsuccessfully, the screw thread of connection is many to be damaged, and screw tap exits more difficult, sometimes salvages apparatus and also cannot take out and abandon.
Therefore, the object of this invention is to provide a kind of structure simple, be convenient to the coal bed gas surface well elongate rod fisher of processing and fabricating at the construction field (site).
Summary of the invention
In view of this, the object of the invention is to overcome defect of the prior art, provide a kind of structure simple, be convenient to the coal bed gas surface well elongate rod fisher of processing and fabricating at the construction field (site).
Coal bed gas surface well elongate rod fisher of the present invention, comprises cylindrical fisher cylindrical shell, and described fisher cylindrical shell lower end is provided with the fishing head for salvaging slender rod piece, and described fishing head comprises the salvaging mouth being arranged at fisher cylinder lateral wall;
Further, described fisher cylindrical shell upper end is provided with the connector for being fixedly connected with borer drill rod;
Further, the fisher cylinder lateral wall above described salvaging mouth is provided with dodges window;
Further, described width of dodging window is greater than the width salvaging mouth;
Further, the filler for fixing salvaged bar is filled with in described fisher cylindrical shell.
The invention has the beneficial effects as follows: coal bed gas surface well elongate rod fisher of the present invention, when the slender rod pieces such as measuring stick fall to down-hole, the existing pipe fitting of job site can be utilized directly to process fisher structure of the present invention, and fisher cylindrical shell upper end of the present invention is fixed with the drill bit of rig and transferred desired location to well, then drilling rod is utilized to drive fisher cylindrical shell to rotate, salvaging mouth is utilized to embrace in fisher cylindrical shell by slender rod pieces such as measuring sticks, then drilling rod is continued descending, salvaged rod member is made to insert fisher cylindrical shell interior and fixing, then fisher cylindrical shell is proposed outside well, realize salvaging.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the axonometric drawing of invention;
Fig. 2 is structural representation of the present invention.
Detailed description of the invention
Fig. 1 is the structural representation of invention, as shown in the figure, coal bed gas surface well elongate rod fisher in the present embodiment, comprise cylindrical fisher cylindrical shell 4, described fisher cylindrical shell 4 lower end is provided with the fishing head for salvaging slender rod piece, described fishing head comprises the salvaging mouth 1 being arranged at fisher cylindrical shell 4 sidewall, when the slender rod pieces such as measuring stick fall to down-hole, the existing pipe fitting of job site can be utilized directly to process fisher structure of the present invention, and fisher cylindrical shell 4 upper end of the present invention is fixed with the drill bit 6 of rig and transfers desired location to well, then drilling rod is utilized to drive fisher cylindrical shell 4 to rotate, salvaging mouth 1 is utilized to embrace in fisher cylindrical shell 4 by slender rod pieces such as measuring sticks, then drilling rod is continued descending, salvaged rod member is made to insert fisher cylindrical shell 4 interior and fixing, then fisher cylindrical shell 4 is proposed outside well, realize salvaging.
In the present embodiment, described fisher cylindrical shell 4 upper end is provided with the connector 5 for being fixedly connected with borer drill rod, is convenient to this fisher to be connected with drill bit of drilling machine 6.
In the present embodiment, fisher cylindrical shell 4 sidewall above described salvaging mouth 1 is provided with dodges window 2, after salvaging mouth 1 embraces slender rod piece shaft, dodges window 2 and can ensure that slender rod piece can enter in fisher cylindrical shell 4 smoothly, avoid interfering with cylinder lateral wall.
In the present embodiment, described width of dodging window 2 is greater than the width salvaging mouth 1, certainly, the side salvaging mouth 1 is concordant with a side of dodging window 2, after salvaging mouth 1 embraces slender rod piece, rightabout will be rotated to fisher cylindrical shell 4 above slender rod piece, and therefore, adopt and larger dodge window 2 and can ensure that slender rod piece enters in fisher cylindrical shell 4 smoothly.
In the present embodiment, the filler 3 for fixing salvaged bar is filled with in described fisher cylindrical shell 4, this filler 3 can be gathered materials on the spot, earth etc. is adopted to insert in fisher cylindrical shell 4, when slender rod piece is involved in after in fisher cylindrical shell 4, make fisher cylindrical shell 4 descending, utilize shaft bottom to insert in filler 3 to the active force of slender rod piece by elongate rod, utilize filler 3 and its frictional force, elongate rod is salvaged on jin.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (5)
1. a coal bed gas surface well elongate rod fisher, is characterized in that: comprise cylindrical fisher cylindrical shell, and described fisher cylindrical shell lower end is provided with the fishing head for salvaging slender rod piece, and described fishing head comprises the salvaging mouth being arranged at fisher cylinder lateral wall.
2. coal bed gas surface well elongate rod fisher according to claim 1, is characterized in that: described fisher cylindrical shell upper end is provided with the connector for being fixedly connected with borer drill rod.
3. coal bed gas surface well elongate rod fisher according to claim 2, is characterized in that: the fisher cylinder lateral wall above described salvaging mouth is provided with dodges window.
4. coal bed gas surface well elongate rod fisher according to claim 3, is characterized in that: described width of dodging window is greater than the width salvaging mouth.
5. coal bed gas surface well elongate rod fisher according to claim 4, is characterized in that: be filled with the filler for fixing salvaged bar in described fisher cylindrical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060534.8A CN104712282A (en) | 2014-12-19 | 2015-02-05 | Coalbed methane ground well slender rod fisher |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420810391 | 2014-12-19 | ||
| CN2014208103919 | 2014-12-19 | ||
| CN201510060534.8A CN104712282A (en) | 2014-12-19 | 2015-02-05 | Coalbed methane ground well slender rod fisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104712282A true CN104712282A (en) | 2015-06-17 |
Family
ID=53411963
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510060534.8A Pending CN104712282A (en) | 2014-12-19 | 2015-02-05 | Coalbed methane ground well slender rod fisher |
| CN201520082219.0U Active CN204419104U (en) | 2014-12-19 | 2015-02-05 | Down-hole elongate rod fishing device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520082219.0U Active CN204419104U (en) | 2014-12-19 | 2015-02-05 | Down-hole elongate rod fishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104712282A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712282A (en) * | 2014-12-19 | 2015-06-17 | 中煤科工集团重庆研究院有限公司 | Coalbed methane ground well slender rod fisher |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2104937A (en) * | 1981-08-27 | 1983-03-16 | Fiberflex Prod Inc | Method and means for fishing a sucker rod string which includes a separated fiberglass sucker rod |
| CN2471921Y (en) * | 2001-03-24 | 2002-01-16 | 袁勇 | Salvage cylinder with window |
| CN2549168Y (en) * | 2002-04-03 | 2003-05-07 | 中国石油化工股份有限公司中原油田分公司采油六厂 | Downhole fishing claw |
| CN2570447Y (en) * | 2002-03-22 | 2003-09-03 | 辽河石油勘探局井下作业公司 | Open-window type pumping rod dipper |
| WO2008127258A1 (en) * | 2007-04-12 | 2008-10-23 | Kelso Well Servicing Tools Inc. | Sucker rod fishing tool |
| CN202441301U (en) * | 2011-12-03 | 2012-09-19 | 中国石油集团川庆钻探工程有限公司川西钻探公司 | Drilling tool fishing device for special-shaped borehole |
| CN202946080U (en) * | 2012-12-11 | 2013-05-22 | 中国石油化工股份有限公司 | Guide shoe for fishing tool of logging instrument |
| CN204419104U (en) * | 2014-12-19 | 2015-06-24 | 中煤科工集团重庆研究院有限公司 | Down-hole elongate rod fishing device |
-
2015
- 2015-02-05 CN CN201510060534.8A patent/CN104712282A/en active Pending
- 2015-02-05 CN CN201520082219.0U patent/CN204419104U/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2104937A (en) * | 1981-08-27 | 1983-03-16 | Fiberflex Prod Inc | Method and means for fishing a sucker rod string which includes a separated fiberglass sucker rod |
| CN2471921Y (en) * | 2001-03-24 | 2002-01-16 | 袁勇 | Salvage cylinder with window |
| CN2570447Y (en) * | 2002-03-22 | 2003-09-03 | 辽河石油勘探局井下作业公司 | Open-window type pumping rod dipper |
| CN2549168Y (en) * | 2002-04-03 | 2003-05-07 | 中国石油化工股份有限公司中原油田分公司采油六厂 | Downhole fishing claw |
| WO2008127258A1 (en) * | 2007-04-12 | 2008-10-23 | Kelso Well Servicing Tools Inc. | Sucker rod fishing tool |
| CN202441301U (en) * | 2011-12-03 | 2012-09-19 | 中国石油集团川庆钻探工程有限公司川西钻探公司 | Drilling tool fishing device for special-shaped borehole |
| CN202946080U (en) * | 2012-12-11 | 2013-05-22 | 中国石油化工股份有限公司 | Guide shoe for fishing tool of logging instrument |
| CN204419104U (en) * | 2014-12-19 | 2015-06-24 | 中煤科工集团重庆研究院有限公司 | Down-hole elongate rod fishing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN204419104U (en) | 2015-06-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150617 |
|
| RJ01 | Rejection of invention patent application after publication |