CN212642655U - Anti-blocking and anti-biting slip socket - Google Patents
Anti-blocking and anti-biting slip socket Download PDFInfo
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- CN212642655U CN212642655U CN202020157546.9U CN202020157546U CN212642655U CN 212642655 U CN212642655 U CN 212642655U CN 202020157546 U CN202020157546 U CN 202020157546U CN 212642655 U CN212642655 U CN 212642655U
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- slip
- spring
- cylinder body
- groove
- tungsten carbide
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Abstract
The utility model discloses a prevent blocking and prevent stinging a slips overshot, include: the upper end of the cylinder body is connected with an upper joint through threads, the lower end of the cylinder body is connected with a guide shoe through threads, the lower end of the guide shoe is provided with a wedge-shaped conical surface, the inside of the cylinder body is provided with a slip, a slip seat, a limiting block, an upper spring and a lower spring, the slips are provided with a spring mounting groove and a slip groove, the limiting block is arranged in the spring mounting groove between the slips and the cylinder body, the lower spring is arranged in a spring mounting groove between the limiting block and the slip, the upper spring is arranged in the cylinder body at the upper end of the slip and the lower end of the upper joint, a tungsten carbide coating A with the thickness of 0.3-0.5mm is sprayed on the inclined plane of the head part of the slip, a tungsten carbide coating B with the thickness of 0.3-0.5mm is sprayed on the inner side of the slip seat which is matched with the inclined plane of the head part of the slip, a groove is arranged on the inner side of the position of the matching surface for firmly holding the fish at the lower end of the slip, and a carbon fiber reinforced nylon sleeve is arranged in the groove.
Description
Technical Field
The utility model relates to oil field exploitation equipment especially relates to an anti-sticking prevents stinging a slips overshot.
Background
In the later stage of oil field development, oil casings are aged and damaged in different degrees, oil pumping pipes and oil pipes are affected by concentrated stress, well fluid corrosion and other factors, well falling blockage accidents are often caused, the top parts of part of falling fish are seriously corroded, even the falling fish are obliquely blocked in an oil well, and the common slip fishing barrel is difficult to finish the fishing of the corroded, oblique and blocked underground falling objects.
SUMMERY OF THE UTILITY MODEL
The technical problem that this practicality will be solved is: provides a slip overshot capable of preventing jamming and biting.
In order to solve the technical problem, the technical scheme adopted by the utility model is as follows: an anti-snag anti-bite slip overshot, comprising: the device comprises a cylinder body, an upper connector is connected with the upper end of the cylinder body through a thread, a guide shoe is connected with the lower end of the cylinder body through a thread, a wedge-shaped conical surface is arranged at the lower end of the guide shoe, a slip seat, a limiting block, an upper spring and a lower spring are arranged in the cylinder body, a spring mounting groove and a slip groove are arranged on the slip, the limiting block is arranged in the spring mounting groove between the slip and the cylinder body, the lower spring is arranged in the spring mounting groove between the limiting block and the slip, the upper spring is arranged in the cylinder body at the upper end of the slip and the lower end of the upper connector, a tungsten carbide coating A with the thickness of 0.3-0.5mm is sprayed on the inclined plane of the head of the slip, a tungsten carbide coating B with the thickness of 0.3-0.5mm is sprayed on the inner side of the slip seat matched with the inclined plane of the head of the slip, a groove is, and a tungsten carbide coating C with the thickness of 0.3-0.5mm is sprayed on the wedge-shaped conical surface at the lower end of the guide shoe.
The utility model has the advantages that: above-mentioned prevent card hinder and prevent stinging slips overshot can accomplish the underground junk of corruption, skew, card hinder and salvage really, and the part of salvaging of overshot is the slips, all sprays the tungsten carbide coating at slips and slips seat complex position, reduces coefficient of surface friction when increasing surface hardness, ensures that both slide smoothly for it is more reliable to press from both sides tightly and release the fish.
The grooves are formed in the matching surface of the slips for firmly holding the fish, the grooves are formed by adopting an injection molding process, and carbon fiber reinforced nylon is injected into the grooves.
The wedge-shaped conical surface at the lower end of the guide shoe is also sprayed with a tungsten carbide coating, so that the surface hardness of the guide shoe cone is increased, the surface friction coefficient is reduced, the service life of the guide shoe is prolonged, and the fish top part of a fish can enter the middle of the slip more easily.
Drawings
Fig. 1 is a schematic structural view of the anti-jamming and anti-biting slip overshot of the present invention.
In the figure: 1. barrel, 2, top connection, 3, guide shoe, 31, tungsten carbide coating C, 4, slips, 41, spring mounting groove, 42, slip groove, 43, tungsten carbide coating A, 44, tungsten carbide coating B, 45, carbon fiber reinforced nylon sleeve, 5, slip seat, 6, limiting block, 7, upper spring, 8, lower spring.
Detailed Description
The following detailed description of the present invention will be made in conjunction with the accompanying drawings and specific embodiments.
As shown in fig. 1, an anti-seize anti-bite slip overshot comprises: barrel 1 the upper end threaded connection of barrel 1 has top connection 2 the lower extreme threaded connection of barrel 1 has guide shoe 3 the lower extreme of guide shoe 3 is provided with the wedge conical surface the inside of barrel 1 is provided with slips 4, slip seat 5, stopper 6, upper spring 7 and lower spring 8 be provided with spring mounting groove 41 and slip groove 42 on the slips 4, stopper 6 sets up in spring mounting groove 41 between slips 4 and barrel 1, lower spring 8 sets up in spring mounting groove 41 between stopper 6 and slips 4, upper spring 7 sets up in barrel 1 of slips 4 upper end and top connection 2 lower extreme, its characterized in that: the head inclined plane of the slip 4 is sprayed with a tungsten carbide coating A43 of 0.3-0.5mm, the inner side of a slip seat 5 matched with the head inclined plane of the slip 4 is sprayed with a tungsten carbide coating B44 of 0.3-0.5mm, the inner side of the position of a firmly-holding fish matching surface at the lower end of the slip 4 is provided with a groove, a carbon fiber reinforced nylon sleeve 45 is arranged in the groove, and a wedged conical surface at the lower end of the guide shoe 3 is sprayed with a tungsten carbide coating C31 of 0.3-0.5 mm.
When the anti-blocking and anti-biting slip fishing barrel is used, a drilling tool is connected with an upper connector 2 through a drill rod, the elastic force of two springs, namely an upper spring 7 and a lower spring 8, is consistent, after a guide shoe 3 guides a fish, the drilling tool is placed downwards, the fish can easily push up a slip 4 to compress the upper spring 7 and the lower spring 8, the slip 4 is enabled to move upwards, the fish enters a slip seat 5, at the moment, the slip 4 is pressed downwards under the action of the upper spring 7 to hold the fish and give a primary clamping force to lift the drilling tool, under the action of the primary clamping force, a barrel body 1 moves upwards, the slip seat 5 moves along a conical surface to clamp the fish, and fishing is achieved.
The grabbing component of the anti-blocking and anti-biting slip overshot is a slip, tungsten carbide coatings are sprayed on the matching parts of the slip and a slip seat, the surface friction coefficient is reduced while the surface hardness is increased, smooth sliding of the slip and the slip is ensured, and the clamping and releasing of fish are more reliable.
The grooves are formed in the matching surface of the slips for firmly holding the fish, the grooves are formed by adopting an injection molding process, and carbon fiber reinforced nylon is injected into the grooves.
The wedge-shaped conical surface at the lower end of the guide shoe is also sprayed with a tungsten carbide coating, so that the surface hardness of the guide shoe cone is increased, the surface friction coefficient is reduced, the service life of the guide shoe is prolonged, and the fish top part of a fish can enter the middle of the slip more easily.
Claims (1)
1. An anti-snag anti-bite slip overshot, comprising: a cylinder body (1), an upper joint (2) is connected with the upper end of the cylinder body (1) through threads, the lower end of the cylinder body (1) is connected with a guide shoe (3) through a thread, the lower end of the guide shoe (3) is provided with a wedge-shaped conical surface, a slip (4), a slip seat (5), a limiting block (6), an upper spring (7) and a lower spring (8) are arranged in the cylinder body (1), the slip (4) is provided with a spring installation groove (41) and a slip groove (42), the limiting block (6) is arranged in a spring mounting groove (41) between the slip (4) and the cylinder body (1), the lower spring (8) is arranged in a spring mounting groove (41) between the limiting block (6) and the slip (4), go up spring (7) and set up in barrel (1) of slips (4) upper end and top connection (2) lower extreme, its characterized in that: the technical scheme is that a tungsten carbide coating A (43) of 0.3-0.5mm is sprayed on the head inclined plane of the slip (4), a tungsten carbide coating B (44) of 0.3-0.5mm is sprayed on the inner side of a slip seat (5) matched with the head inclined plane of the slip (4), a groove is formed in the inner side of the position of a firmly-holding falling fish matching surface at the lower end of the slip (4), a carbon fiber reinforced nylon sleeve (45) is arranged in the groove, and a tungsten carbide coating C (31) of 0.3-0.5mm is sprayed on the wedge-shaped conical surface at the lower end of the guide shoe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020157546.9U CN212642655U (en) | 2020-02-10 | 2020-02-10 | Anti-blocking and anti-biting slip socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020157546.9U CN212642655U (en) | 2020-02-10 | 2020-02-10 | Anti-blocking and anti-biting slip socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212642655U true CN212642655U (en) | 2021-03-02 |
Family
ID=74767302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020157546.9U Active CN212642655U (en) | 2020-02-10 | 2020-02-10 | Anti-blocking and anti-biting slip socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212642655U (en) |
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2020
- 2020-02-10 CN CN202020157546.9U patent/CN212642655U/en active Active
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