CN110984897B - Fishing spear with co-operation of inner slip and outer slip - Google Patents
Fishing spear with co-operation of inner slip and outer slip Download PDFInfo
- Publication number
- CN110984897B CN110984897B CN201911185151.8A CN201911185151A CN110984897B CN 110984897 B CN110984897 B CN 110984897B CN 201911185151 A CN201911185151 A CN 201911185151A CN 110984897 B CN110984897 B CN 110984897B
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- slip
- slips
- compression spring
- fixing hole
- fishing spear
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- 230000006835 compression Effects 0.000 claims abstract description 38
- 238000007906 compression Methods 0.000 claims abstract description 38
- 238000007493 shaping process Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 3
- 210000003456 pulmonary alveoli Anatomy 0.000 claims description 2
- 241000561734 Celosia cristata Species 0.000 claims 1
- 210000001520 comb Anatomy 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 241000251468 Actinopterygii Species 0.000 abstract description 31
- 238000005553 drilling Methods 0.000 description 14
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
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- 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 discloses a fishing spear with an inner slip and an outer slip cooperating together, which comprises a mandrel, wherein the mandrel is provided with the outer slip in a sliding manner, an upper fixing hole is formed in the upper end of the outer slip, a second compression spring is placed in the upper fixing hole, an internal thread is formed at the upper end of the upper fixing hole, a machine head is arranged on the upper fixing hole through a thread, a lower clamping cavity is formed in the lower end of the outer slip, an inner sawtooth-shaped thread is formed on the side wall of the lower clamping cavity, a first expansion groove is formed on the outer wall of the lower end of the outer slip, and a first compression spring is nested in the middle of the mandrel. Has the advantages that: the inner slip and the outer slip can simultaneously clamp the inner part and the outer part of the fish during fishing through the combined action of the inner slip and the outer slip, so that the fixing firmness of the fish is improved, and the falling fish is prevented from falling off during fishing; two springs are arranged inside the fishing spear, and one attack can be provided to force to promote the inner slip to be quickly fixed into the fish during the compression of the springs, so that the damage of a guide cone or the fish is avoided, and the fixing efficiency is improved.
Description
Technical Field
The invention relates to the technical field of drilling fishing equipment, in particular to a fishing spear with an inner slip and an outer slip cooperating together.
Background
In the process of oil drilling, well track data needs to be checked, usually, an underground multipoint instrument is adopted to measure data such as well deviation and direction, an operator puts the electronic multipoint instrument into a water hole in a drill column, the instrument descends into a special non-magnetic drill collar tool, and then continuous measurement is carried out by the multipoint instrument; after the measurement, do power with the rig and adopt wellhead equipment to play out the drilling string, when this kind of instrument apart from the export of drilling platform face 10 ~ 30 meters, need go into special instrument fishing spear and fish this instrument down, operating personnel will drag for the spear and throw from the well head platform and put the drilling string water and carry out the operation of salvaging multi-point instrument in the eye, hang after the instrument goes out the platform face and put the operation and place it and dismantle ground, drag for the specialized tool of instrument in the drilling string of conveniently salvaging safely by the spear.
When current fishing spear used, can only follow the fixed fish that falls of inside, it is fixed insecure, when putting forward it from the well drilling, because the fish can contact with the well drilling wall, at the in-process of salvaging the fish, have certain probability can lead to the fish to drop from fishing spear, cause very big economic loss.
Disclosure of Invention
The present invention is directed to solving the above problems by providing a fishing spear in which inner and outer slips cooperate.
The technical scheme of the invention is realized as follows:
a fishing spear with co-operation of inner slips and outer slips comprises a mandrel, wherein an outer slip is slidably mounted on the mandrel, an upper fixing hole is formed in the upper end of the outer slip, a second compression spring is placed in the upper fixing hole, an internal thread is formed in the upper end of the upper fixing hole, a machine head is mounted on the upper fixing hole through a thread, a lower clamping cavity is formed in the lower end of the outer slip, inner sawtooth-shaped screw teeth are formed on the side wall of the lower clamping cavity, a first expansion groove is formed in the outer wall of the lower end of the outer slip, the first compression spring is nested in the middle of the mandrel, an inner slip is arranged at the lower end of the first compression spring, a second expansion groove is formed in the outer wall of the inner slip, a sliding mounting hole is formed in the lower end of the inner slip, outer sawtooth-shaped screw teeth are formed in the outer wall of the inner slip, a horizontal slip groove is formed in the upper end of the inner slip, a limiting ring is welded on the inner wall of the upper end of the inner slip, and a slip locking ring which is fixed on the mandrel through threads is arranged below the inner slip.
Furthermore, a fixed clamping groove is formed in the upper end of the machine head, a lower connecting column is formed at the lower end of the machine head, external threads matched with the internal threads of the upper fixing hole are formed on the outer surface of the lower connecting column, and a limiting convex column is formed in the middle of the lower surface of the lower connecting column.
Furthermore, the outer slips are of a 'ancient bell' structure with a small upper part and a large lower part, the diameter of the lower end of the lower clamping cavity is larger than that of the upper end of the lower clamping cavity, the number of the first expansion grooves is four and eight, and all the first expansion grooves are distributed on the side wall of the lower clamping cavity in an annular array mode.
Furthermore, the inner slip is of a conical structure with a small lower end and a large upper end, the number of the second expansion grooves is eight, and all the second expansion grooves are distributed on the side wall of the inner slip in an annular array.
Furthermore, the mandrel comprises a main rod body, an end cap is integrally formed at the end part of the main rod body, a thread section is formed at the other end of the main rod body, and a guide cone is formed on the outer side of the thread section.
Furthermore, a connecting hole is formed between the upper fixing hole and the lower clamping cavity, and the main rod body is inserted in the connecting hole in a clearance fit mode.
Furthermore, the end cap head is installed in a sliding fit with the upper fixing hole, one end of the second compression spring abuts against the upper surface of the end cap head, and the other end of the second compression spring abuts against the machine head.
Furthermore, the main rod body penetrates through the sliding installation hole, one end of the first compression spring is propped against the limiting ring, and the other end of the first compression spring is propped against the lower clamping cavity.
Further, the slip locking ring is threadedly mounted to the threaded segment.
By adopting the technical scheme, the invention has the beneficial effects that: the inner slip and the outer slip can simultaneously clamp the inner part and the outer part of the fish during fishing through the combined action of the inner slip and the outer slip, so that the fixing firmness of the fish is improved, and the falling fish is prevented from falling off during fishing; two springs are arranged inside the fishing spear, and one attack can be provided to force to promote the inner slip to be quickly fixed into the fish during the compression of the springs, so that the damage of a guide cone or the fish is avoided, and the fixing efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a front view of the handpiece of the present invention;
FIG. 3 is a cross-sectional view of the outer slip of the present invention;
FIG. 4 is a cross-sectional view of the inner slip of the present invention;
FIG. 5 is a top view of the inner slip of the present invention;
figure 6 is a front view of a mandrel of the present invention.
The reference numerals are explained below:
1. a machine head; 11. fixing the clamping groove; 12. a lower connecting column; 13. a limiting convex column; 2. an outer slip; 21. an upper fixing hole; 22. a lower clamping cavity; 23. a first expansion tank; 24. inner sawtooth-shaped screw teeth; 3. an inner slip; 31. a limiting ring; 32. a horizontal alveolus; 33. external zigzag thread; 34. a second expansion tank; 35. a sliding mounting hole; 4. a slip locking ring; 5. a first compression spring; 6. a mandrel; 61. an end cap; 62. a main rod body; 63. a threaded segment; 64. leading a cone; 7. a second compression spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-6, a fishing spear with co-operation of inner and outer slips comprises a mandrel 6, an outer slip 2 is slidably mounted on the mandrel 6 for clamping the outer wall of a fish, an upper fixing hole 21 is formed in the upper end of the outer slip 2, a second compression spring 7 is placed in the upper fixing hole 21, the second compression spring 7 can provide a downward axial force to the mandrel 6 after being compressed, an internal thread is formed at the upper end of the upper fixing hole 21, a nose 1 is mounted on the upper fixing hole 21 through a thread, a lower clamping cavity 22 is formed in the lower end of the outer slip 2, an inner sawtooth-shaped screw thread 24 is formed on the side wall of the lower clamping cavity 22 for improving friction force and facilitating clamping the outer wall of the fish, a first expansion groove 23 is formed on the outer wall of the lower end of the outer slip 2 for facilitating expansion of the outer slip 2, a first compression spring 5 is nested in the middle of the mandrel 6, the first compression spring 5 provides a downward axial force to the inner slip 3 after being compressed, the inner slip 3 is convenient to clamp into the center of a fish, the lower end of the first compression spring 5 is provided with the inner slip 3, a second expansion groove 34 is formed in the outer wall of the inner slip 3, the inner slip 3 is convenient to expand to clamp the fish, a sliding mounting hole 35 is formed in the lower end of the inner slip 3, outer sawtooth-shaped screw teeth 33 are formed in the outer wall of the inner slip 3, friction force is increased by the outer sawtooth-shaped screw teeth 33, the inner part of the fish is convenient to clamp, a horizontal tooth groove 32 is formed in the upper end of the outer wall of the inner slip 3, the clamping position of the fish is limited, a limiting ring 31 is welded on the inner wall of the upper end of the inner slip 3, the position of the first compression spring 5 is convenient to limit, a slip locking ring 4 fixed on a mandrel 6 through threads is arranged below the inner slip 3, and the descending position of the inner slip 3 is limited.
In this embodiment, 1 upper end inside shaping of aircraft nose has fixed slot 11, and 1 lower extreme shaping of aircraft nose has lower spliced pole 12, and the shaping of lower spliced pole 12 surface has the external screw thread with the interior screw-thread fit of last fixed orifices 21, and the aircraft nose 1 of being convenient for is fixed on slips 2 outward, and the shaping of lower spliced pole 12 lower surface middle part has spacing projection 13 for prescribe a limit to the position of second compression spring 7, avoid second compression spring 7 to take place the slope.
In this embodiment, outer slips 2 is big end down's "ancient bell" type structure, and lower calorie of chamber 22 lower extreme diameter is greater than the upper end diameter, and the total eight of four of first expansion tank 23, all 23 annular arrays of first expansion tank distribute under on calorie of chamber 22 lateral wall, and outer slips 2 is separated into the multi-disc, and the tight fish that falls of inflation clamp after being convenient for atress.
In this embodiment, the inner slip 3 is a conical structure with a small lower end and a large upper end, the second expansion grooves 34 have eight total channels, all the second expansion grooves 34 are distributed on the side wall of the inner slip 3 in an annular array manner, the inner slip 3 is divided into a plurality of pieces, and the inner slip is convenient to shrink and clamp fish after being stressed.
In this embodiment, the mandrel 6 includes a main rod body 62, an end cap 61 is integrally formed at an end of the main rod body 62, a threaded section 63 is formed at the other end of the main rod body 62, and a guide cone 64 is formed outside the threaded section 63, so as to facilitate positioning of a central hole of a fish.
In this embodiment, a connection hole is formed between the upper fixing hole 21 and the lower clamping cavity 22, and the main rod body 62 is inserted into the connection hole in a clearance fit manner, so that the mandrel 6 is conveniently fixed in the center of the outer slip 2.
In this embodiment, the end cap 61 is installed in sliding fit with the upper fixing hole 21, one end of the second compression spring 7 abuts against the upper surface of the end cap 61, the other end of the second compression spring 7 abuts against the machine head 1, and the elastic force generated by the compression of the second compression spring 7 is used for assisting the fish falling and fixing.
In this embodiment, the main rod 62 passes through the sliding installation hole 35, one end of the first compression spring 5 abuts against the limiting ring 31, the other end of the first compression spring 5 abuts against the lower clamping cavity 22, and the elastic force generated by the compression of the first compression spring 5 is used for pushing the inner slip 3 to move downwards to clamp the falling fish.
In this embodiment, the slip locking ring 4 is mounted on the threaded section 63 through a thread, so that the inner slip 3 is conveniently fixed.
The working principle of the invention is as follows: during the use, install aircraft nose 1 on the drilling machine and put into the well drilling, automatic location after the pilot cone 64 contacts the fish, make the pilot cone 64 get into the fish center, along with the continuation decline of fishing spear, 6 rebound of dabber, first compression spring 5 and second compression spring 7 give interior slips 3 and 6 a decurrent axial force of dabber respectively this moment, under the combined action of this axial force and drilling machine, 3 blocks of interior slips are gone into in the fish inner bore, 2 blocks of outer slips are on the fish outer wall simultaneously, and the chucking is outside at the fish, realize inside and outside common fixed, then the drilling machine offers the fishing work of accomplishing the fish in the drilling spear follow well drilling.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a fishing spear of interior outer slips cooperation jointly which characterized in that: comprises a mandrel (6), an outer slip (2) is slidably mounted on the mandrel (6), an upper fixing hole (21) is formed in the upper end of the outer slip (2), a second compression spring (7) is placed in the upper fixing hole (21), an internal thread is formed in the upper end of the upper fixing hole (21), a machine head (1) is mounted on the upper fixing hole (21) through a thread, a lower clamping cavity (22) is formed in the lower end of the outer slip (2), an inner sawtooth-shaped screw thread (24) is formed in the side wall of the lower clamping cavity (22), a first expansion groove (23) is formed in the outer wall of the lower end of the outer slip (2), a first compression spring (5) is nested in the middle of the mandrel (6), an inner slip (3) is arranged at the lower end of the first compression spring (5), a second expansion groove (34) is formed in the outer wall of the inner slip (3), a sliding mounting hole (35) is formed in the lower end of the inner slip (3), interior slips (3) outer wall go up the shaping and have outer cockscomb structure thread (33), interior slips (3) outer wall upper end shaping has horizontal alveolus (32), the welding has spacing ring (31) on interior slips (3) upper end inner wall, interior slips (3) below is provided with through the screw thread fix slips locking ring (4) on dabber (6).
2. The fishing spear with co-operation of inner and outer slips as claimed in claim 1, wherein: the inside shaping of aircraft nose (1) upper end has fixed slot (11), aircraft nose (1) lower extreme shaping has lower spliced pole (12), down spliced pole (12) surface shaping have with the interior screw-thread fit's of last fixed orifices (21) external screw thread, lower spliced pole (12) lower surface middle part shaping has spacing projection (13).
3. The fishing spear with co-operation of inner and outer slips as claimed in claim 1, wherein: outer slips (2) are "ancient bell" type structure big end down, lower calorie of chamber (22) lower extreme diameter is greater than the upper end diameter, first expansion tank (23) are totally four to eight, all first expansion tank (23) ring array distribute under on calorie of chamber (22) lateral wall.
4. The fishing spear with co-operation of inner and outer slips as claimed in claim 1, wherein: the inner slip (3) is of a conical structure with a small lower end and a large upper end, the number of the second expansion grooves (34) is four to eight, and all the second expansion grooves (34) are distributed on the side wall of the inner slip (3) in an annular array.
5. The fishing spear with co-operation of inner and outer slips as claimed in claim 1, wherein: the mandrel (6) comprises a main rod body (62), an end cap head (61) is integrally formed at the end of the main rod body (62), a threaded section (63) is formed at the other end of the main rod body (62), and a guide cone (64) is formed on the outer side of the threaded section (63).
6. The fishing spear with co-operation of inner and outer slips as claimed in claim 5, wherein: a connecting hole is formed between the upper fixing hole (21) and the lower clamping cavity (22), and the main rod body (62) is inserted in the connecting hole in a clearance fit mode.
7. The fishing spear with co-operation of inner and outer slips as claimed in claim 5, wherein: the end cap head (61) is installed in a sliding fit mode with the upper fixing hole (21), one end of the second compression spring (7) is pressed against the upper surface of the end cap head (61), and the other end of the second compression spring (7) is pressed against the machine head (1).
8. The fishing spear with co-operation of inner and outer slips as claimed in claim 5, wherein: the main rod body (62) penetrates through the sliding installation hole (35), one end of the first compression spring (5) is pressed against the limiting ring (31), and the other end of the first compression spring (5) is pressed against the lower clamping cavity (22).
9. The fishing spear with co-operation of inner and outer slips as claimed in claim 5, wherein: the slip locking ring (4) is mounted on the threaded section (63) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911185151.8A CN110984897B (en) | 2019-11-27 | 2019-11-27 | Fishing spear with co-operation of inner slip and outer slip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911185151.8A CN110984897B (en) | 2019-11-27 | 2019-11-27 | Fishing spear with co-operation of inner slip and outer slip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110984897A CN110984897A (en) | 2020-04-10 |
| CN110984897B true CN110984897B (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911185151.8A Active CN110984897B (en) | 2019-11-27 | 2019-11-27 | Fishing spear with co-operation of inner slip and outer slip |
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| Country | Link |
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| CN (1) | CN110984897B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142806B (en) * | 2022-06-15 | 2024-06-04 | 淮安市井神钻采机具有限公司 | Electric drive's fish fishing device |
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| WO2010140896A1 (en) * | 2009-06-02 | 2010-12-09 | 2K Tools As | Fishing tool |
| CN204040973U (en) * | 2014-09-03 | 2014-12-24 | 卢艳军 | A kind of oil pipe combination fishing socket |
| CN104358538A (en) * | 2014-11-06 | 2015-02-18 | 长江大学 | Special fishing spear for fishing of fishes of continuous oil pipe |
| CN205225136U (en) * | 2015-12-02 | 2016-05-11 | 中国石油天然气股份有限公司 | Tear fish top fishing tool |
| CN207278229U (en) * | 2017-09-25 | 2018-04-27 | 中国石油化工股份有限公司 | The compound fishing socket of integral type Pisces head |
| CN207673306U (en) * | 2017-09-21 | 2018-07-31 | 天津中油钻探工程有限公司 | A kind of combined type fishing socket |
| CN109441389A (en) * | 2019-01-03 | 2019-03-08 | 西安石油大学 | A kind of dual-grip reversible coiled tubing fish fishing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204200145U (en) * | 2014-11-06 | 2015-03-11 | 长江大学 | A kind of coiled tubing fish Special Fishing Tools |
| CN108952614B (en) * | 2018-08-01 | 2020-08-11 | 西南石油大学 | Ratchet type is fishing device in pit |
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2019
- 2019-11-27 CN CN201911185151.8A patent/CN110984897B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6848507B2 (en) * | 2002-08-13 | 2005-02-01 | Malliburton Energy Services, Inc. | Expandable wirefinder and method for use of same |
| WO2010140896A1 (en) * | 2009-06-02 | 2010-12-09 | 2K Tools As | Fishing tool |
| CN204040973U (en) * | 2014-09-03 | 2014-12-24 | 卢艳军 | A kind of oil pipe combination fishing socket |
| CN104358538A (en) * | 2014-11-06 | 2015-02-18 | 长江大学 | Special fishing spear for fishing of fishes of continuous oil pipe |
| CN205225136U (en) * | 2015-12-02 | 2016-05-11 | 中国石油天然气股份有限公司 | Tear fish top fishing tool |
| CN207673306U (en) * | 2017-09-21 | 2018-07-31 | 天津中油钻探工程有限公司 | A kind of combined type fishing socket |
| CN207278229U (en) * | 2017-09-25 | 2018-04-27 | 中国石油化工股份有限公司 | The compound fishing socket of integral type Pisces head |
| CN109441389A (en) * | 2019-01-03 | 2019-03-08 | 西安石油大学 | A kind of dual-grip reversible coiled tubing fish fishing device |
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| Publication number | Publication date |
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| CN110984897A (en) | 2020-04-10 |
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