CN105401903A - Three-jaw fisher for coiled tubing - Google Patents
Three-jaw fisher for coiled tubing Download PDFInfo
- Publication number
- CN105401903A CN105401903A CN201610006270.2A CN201610006270A CN105401903A CN 105401903 A CN105401903 A CN 105401903A CN 201610006270 A CN201610006270 A CN 201610006270A CN 105401903 A CN105401903 A CN 105401903A
- Authority
- CN
- China
- Prior art keywords
- main cylinder
- support
- jaw
- screwed connection
- coiled tubing
- 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.)
- Granted
Links
- 210000000078 claw Anatomy 0.000 claims description 16
- 241000251468 Actinopterygii Species 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Abstract
The invention relates to a three-jaw fisher for coiled tubing fishing operation. The three-jaw fisher can perform efficient and quick fishing operation on underground fallen tubing tools. The technical scheme is that the upper end of an upper connector is in screwed connection with a coiled tubing, the lower end of the upper connector is in screwed connection with the upper end of a main cylinder body; a jaw seat is in screwed connection with the upper part of the main cylinder body; the upper end face of each support jaw is arranged to be zigzag, the lower end of each support jaw is hinged to a hinge support, and three support jaws are mounted in three inclined holes of the jaw seat; a T-shaped pothook at the lower end of each hinge support is mounted in a T-shaped groove in the upper end face of a piston cylinder; the piston cylinder sleeves the excircle of the main cylinder body, a spring is mounted on a bulged step on the excircle of the main cylinder body, and an end cover is in screwed connection with the lower end of the piston cylinder; the upper end of a guide shoe is in screwed connection with the lower end of the main cylinder body. The action of the support jaws is controlled by hydraulic pressure, and the control is simple and effective; the three-jaw fisher is connected with the coiled tubing for use, and can quickly realize tripping-in and lifting, and fishing operation time is greatly saved.
Description
Technical field
The present invention relates to a kind of three-jaw fisher of coiled tubing fishing.
Background technology
In oil and gas industry, in the process of drilling well and producing oil gas reservoir, all may there is the drop accident in shaft bottom of fish and occur.The shaft bottom once fish drops, will have a strong impact on normal Reservoir Development operation, at this moment just must salvage down-hole fish, and therefore fishing is very important engineer operation project in oil-gas reservoir recovery process.Existing fishing tool is for different classes of fish, and have extremely abundant kind, the salvaging effect of various fishing tool is also different.But fishing requires as far as possible efficiently to salvage fish rapidly, in order to avoid delay normal production operation.
Because coiled tubing does not need to make up a joint, greatly can save the time of going into the well, so use coiled tubing to carry out fishing more efficiently can carry out fishing rapidly, a main trend of fishing will be become.
Summary of the invention
The object of the invention is: in order to carry out efficient fishing fast to down-hole tubing fish, spy provides a kind of coiled tubing three-jaw fisher.
In order to achieve the above object, the present invention by the following technical solutions: a kind of coiled tubing three-jaw fisher is made up of top connection, main cylinder, pawl seat, support claw, hinged-support, piston rod, spring, end cap and guide shoe; Its architectural feature is: top connection upper end and coiled tubing screwed connection, top connection lower end and the screwed connection of main cylinder upper end; In the middle part of main cylinder, circumference evenly arranges three through holes connection main cylinder interior or exterior spaces, and arrange a circle cylindrical raised step below three through holes in the middle part of main cylinder, main cylinder top cylindrical is set to screw thread; Pawl seat inner chamber is set to box thread, and pawl seat circumference evenly arranges three inclined holes and is communicated with pawl seat external cylindrical surface and lower surface, and three inclined hole central axiss and pawl seat central axis angle are 15 ° ~ 25 °; Pawl seat and the screwed connection of main cylinder top; Support claw upper surface is set to zigzag, lower end and hinged-support hinged, three support claws are arranged in pawl seat three inclined holes; Hinged-support lower end is set to T-shape hook, and piston rod upper surface circumference evenly arranges three T-shape grooves, and the T-shape hook of hinged-support lower end is arranged in the T-shape groove of piston rod upper surface; Piston-cylinder is on main cylinder cylindrical, and spring fitting is in main cylinder cylindrical raised step, and spring is in compressive state, end cap and the screwed connection of piston rod lower end; Guide shoe upper end and the screwed connection of main cylinder lower end, guide shoe lower end is set to spheroid.
The invention has the beneficial effects as follows: (1) the present invention utilizes the action of hydraulic control support claw, control effectively simple; (2) the present invention utilizes and stretches out support claw and block tubing fish inwall, fixing reliable; (3) the present invention is connected use with coiled tubing, can realize down fast and promote, significantly save the time of fishing.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of coiled tubing three-jaw of the present invention fisher support claw stretches out state;
Fig. 2 is the structural representation of a kind of coiled tubing three-jaw of the present invention fisher support claw retracted state;
Fig. 3 is the schematic three dimensional views of a kind of coiled tubing three-jaw of the present invention fisher support claw, pawl seat and piston rod;
In figure: 1. top connection, 2. main cylinder, 3. pawl seat, 4. support claw, 5. hinged-support, 6. piston rod, 7. spring, 8. end cap, 9. guide shoe.
Detailed description of the invention
As shown in Figure 1, Figure 2 and Figure 3, a kind of coiled tubing three-jaw fisher of the present invention is made up of top connection 1, main cylinder 2, pawl seat 3, support claw 4, hinged-support 5, piston rod 6, spring 7, end cap 8 and guide shoe 9; Its architectural feature is: top connection 1 upper end and coiled tubing screwed connection, top connection 1 lower end and main cylinder 2 upper end screwed connection; In the middle part of main cylinder 2, circumference evenly arranges three through holes connection main cylinder 2 interior or exterior spaces, and arrange a circle cylindrical raised step below three through holes in the middle part of main cylinder 2, main cylinder 2 top cylindrical is set to screw thread; Pawl seat 3 inner chamber is set to box thread, and pawl seat 3 circumference evenly arranges three inclined holes and is communicated with pawl seat 3 external cylindrical surface and lower surface, and three inclined hole central axiss and pawl seat 3 central axis angle are 15 ° ~ 25 °; Pawl seat 3 and main cylinder 2 top screwed connection; Support claw 4 upper surface is set to zigzag, lower end and hinged-support 5 hinged, three support claws 4 are arranged in pawl seat 3 three inclined holes; Hinged-support 5 lower end is set to T-shape hook, and piston rod 6 upper surface circumference evenly arranges three T-shape grooves, and the T-shape hook of hinged-support 5 lower end is arranged in the T-shape groove of piston rod 6 upper surface; Piston rod 6 is enclosed within main cylinder 2 cylindrical, and spring 7 is arranged in main cylinder 2 cylindrical raised step, and spring 7 is in compressive state, end cap 8 and piston rod 6 lower end screwed connection; Guide shoe 9 upper end and main cylinder 2 lower end screwed connection, guide shoe 9 lower end is set to spheroid.
The operating principle of a kind of coiled tubing three-jaw of the present invention fisher is: enter the present invention to fish top of fish under using coiled tubing, under the guiding of guide shoe 9, the present invention enters fish inner chamber in pipe, suppressed to inner chamber of the present invention by coiled tubing, support claw 4 is protruding and clamp tubing fish inwall, above carries coiled tubing and recyclable fish.
Claims (2)
1. a coiled tubing three-jaw fisher is made up of top connection (1), main cylinder (2), pawl seat (3), support claw (4), hinged-support (5), piston rod (6), spring (7), end cap (8) and guide shoe (9); Its architectural feature is: top connection (1) upper end and coiled tubing screwed connection, top connection (1) lower end and main cylinder (2) upper end screwed connection; Pawl seat (3) and main cylinder (2) top screwed connection; Support claw (4) upper surface is set to zigzag, lower end and hinged-support (5) hinged, three support claws (4) are arranged in pawl seat (3) three inclined holes; Hinged-support (5) lower end is set to T-shape hook, piston rod (6) upper surface circumference evenly arranges three T-shape grooves, and the T-shape hook of hinged-support (5) lower end is arranged in the T-shape groove of piston rod (6) upper surface; Piston rod (6) is enclosed within main cylinder (2) cylindrical, spring (7) is arranged in main cylinder (2) cylindrical raised step, spring (7) is in compressive state, end cap (8) and piston rod (6) lower end screwed connection; Guide shoe (9) upper end and main cylinder (2) lower end screwed connection, guide shoe (9) lower end is set to spheroid.
2. coiled tubing three-jaw fisher according to claim 1, it is characterized in that: described main cylinder (2) middle part circumference evenly arranges three through holes and is communicated with main cylinder (2) interior or exterior space, arrange a circle cylindrical raised step below three through holes in main cylinder (2) middle part, main cylinder (2) top cylindrical is set to screw thread; Pawl seat (3) inner chamber is set to box thread, pawl seat (3) circumference evenly arranges three inclined holes and is communicated with pawl seat (3) external cylindrical surface and lower surface, and three inclined hole central axiss and pawl seat (3) central axis angle are 15 ° ~ 25 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006270.2A CN105401903B (en) | 2016-01-07 | 2016-01-07 | A kind of coiled tubing three-jaw fisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006270.2A CN105401903B (en) | 2016-01-07 | 2016-01-07 | A kind of coiled tubing three-jaw fisher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105401903A true CN105401903A (en) | 2016-03-16 |
| CN105401903B CN105401903B (en) | 2017-11-14 |
Family
ID=55467618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610006270.2A Expired - Fee Related CN105401903B (en) | 2016-01-07 | 2016-01-07 | A kind of coiled tubing three-jaw fisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105401903B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237610A (en) * | 2017-08-14 | 2017-10-10 | 中国石油大学(华东) | A kind of continuous pipe release device |
| CN107420062A (en) * | 2017-08-14 | 2017-12-01 | 中国石油大学(华东) | A kind of bumper jar for continuous pipe unfreezing |
| CN114809970A (en) * | 2022-04-18 | 2022-07-29 | 中国石油化工股份有限公司 | Coiled tubing built-in hanger fisher and method for shale gas well sand jam |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1779123A (en) * | 1929-08-05 | 1930-10-21 | Paul G Gates | Hydraulic casing spear |
| US4273372A (en) * | 1978-09-14 | 1981-06-16 | Standard Oil Company (Indiana) | Apparatus for use in lowering casing strings |
| US20040262005A1 (en) * | 2002-09-26 | 2004-12-30 | Baker Hughes Incorporated | Latch mechanism guide |
| CN200946477Y (en) * | 2006-05-11 | 2007-09-12 | 冀东石油勘探开发公司 | Multifunctional hydraulic quit type reversing fishing device capable of resisting falling |
| CN201068764Y (en) * | 2007-07-05 | 2008-06-04 | 辽河石油勘探局 | Retreating hydraulic slip spear |
| CN201661261U (en) * | 2010-04-19 | 2010-12-01 | 中国石油化工集团公司 | Well casing positioning and reversing tool |
| CN202946082U (en) * | 2012-11-12 | 2013-05-22 | 中国石油集团长城钻探工程有限公司 | Hydraulic type coring tool special salvage tool |
-
2016
- 2016-01-07 CN CN201610006270.2A patent/CN105401903B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1779123A (en) * | 1929-08-05 | 1930-10-21 | Paul G Gates | Hydraulic casing spear |
| US4273372A (en) * | 1978-09-14 | 1981-06-16 | Standard Oil Company (Indiana) | Apparatus for use in lowering casing strings |
| US20040262005A1 (en) * | 2002-09-26 | 2004-12-30 | Baker Hughes Incorporated | Latch mechanism guide |
| CN200946477Y (en) * | 2006-05-11 | 2007-09-12 | 冀东石油勘探开发公司 | Multifunctional hydraulic quit type reversing fishing device capable of resisting falling |
| CN201068764Y (en) * | 2007-07-05 | 2008-06-04 | 辽河石油勘探局 | Retreating hydraulic slip spear |
| CN201661261U (en) * | 2010-04-19 | 2010-12-01 | 中国石油化工集团公司 | Well casing positioning and reversing tool |
| CN202946082U (en) * | 2012-11-12 | 2013-05-22 | 中国石油集团长城钻探工程有限公司 | Hydraulic type coring tool special salvage tool |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237610A (en) * | 2017-08-14 | 2017-10-10 | 中国石油大学(华东) | A kind of continuous pipe release device |
| CN107420062A (en) * | 2017-08-14 | 2017-12-01 | 中国石油大学(华东) | A kind of bumper jar for continuous pipe unfreezing |
| CN114809970A (en) * | 2022-04-18 | 2022-07-29 | 中国石油化工股份有限公司 | Coiled tubing built-in hanger fisher and method for shale gas well sand jam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105401903B (en) | 2017-11-14 |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 Termination date: 20190107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |