CN210977369U

CN210977369U - Length-adjustable fishing tool for broken-off sucker rod

Info

Publication number: CN210977369U
Application number: CN201921384856.8U
Authority: CN
Inventors: 李映刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-07-10
Anticipated expiration: 2029-08-23

Abstract

The utility model relates to the technical field of well workover salvage auxiliary devices, in particular to a length-adjustable type fishing tool for a broken sucker rod, which can adjust the length of an extension cylinder according to the fracture length of the broken sucker rod, thereby matching the length of the extension cylinder with the fracture length of the sucker rod, being more convenient to salvage the broken sucker rod and improving the use reliability; comprises an upper joint, a lengthening cylinder and a guide shoe; the extension cylinder comprises an outer pipe body, an inner pipe body, a threaded pipe, a threaded rod and a ball bearing, the top end of the outer pipe body is connected with an upper joint, the cross section of the inner part of the outer pipe body is of a polygonal structure, the cross section of the outer part of the inner pipe body is of a polygonal structure matched with the outer pipe body, the top end of the inner pipe body is inserted into the outer pipe body from the bottom end of the outer pipe body, an upper fixing plate is welded at the top of the outer pipe body, a lower fixing plate is arranged at the top of the inner pipe body, a cavity is formed in the inner part of the guide shoe, multiple groups of clamping devices are.

Description

Length-adjustable fishing tool for broken-off sucker rod

Technical Field

The utility model relates to a well workover salvage auxiliary device's technical field especially relates to a disconnected sucker rod fishing tool that takes off with adjustable length.

Background

It is well known that sucker rods are a key component (rod string) in sucker rod oil production, and after long-term use, the sucker rods are worn and broken to the underground, and even cause production stoppage of oil and gas wells. The operation of fishing the sucker rod is a main work for recovering normal production.

Chinese utility model patent CN207568531U discloses a length-adjustable broken-off sucker rod fishing tool, which comprises an upper joint, an extension cylinder, a guide shoe and a C-shaped slip, wherein the top of the upper joint is provided with a female buckle for connecting and fishing a solid sucker rod, the bottom of the upper joint is provided with a male buckle for connecting the extension cylinder, a groove for upper buckle of a pipe wrench is turned on the outer side surface of a solid part from a female opening to the bottom of the upper joint, four drainage holes are drilled and milled on the side wall of the middle part of the upper joint, and the drainage holes are communicated with the inner cavity of the middle lower part of the upper; the lengthening cylinder is a hollow cylinder, a female buckle for connecting an upper connector and a male buckle for connecting a guide shoe are respectively turned at the upper end and the lower end of the lengthening cylinder, the guide shoe is a hollow cylinder, and a female buckle for connecting the lengthening cylinder, a circular slip guide groove, a conical cavity and a horn mouth are sequentially processed in an inner cavity of the guide shoe from top to bottom; the C-slips are placed in a tapered cavity of the guide shoe. The utility model is suitable for the sucker rod is salvaged in the oil pipe, the length of the extension cylinder can be adjusted according to the size of the fish top, the operation is convenient, and the fishing construction timeliness of the sucker rod in the well repair operation is improved; but when it salvages the operation, also select the extension section of thick bamboo of suitable length to salvage according to the cracked length of sucker rod, and the fracture position of sucker rod is uncertain, so can not guarantee just can salvage disconnected sucker rod through selecting the extension section of thick bamboo of suitable length, lead to using the reliability lower.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a sucker rod fishing tool is taken off absolutely to adjustable length, its length that can take off the sucker rod according to the breakage length of breaking adjusts an extension section of thick bamboo to make the length of an extension section of thick bamboo and the breakage length phase-match of sucker rod, it is more convenient to take off the sucker rod to the breakage and salvage, improves and uses the reliability.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a length-adjustable broken sucker rod fishing tool comprises an upper joint, a lengthened cylinder and a guide shoe; the lengthening cylinder comprises an outer tube body, an inner tube body, a threaded tube and a threaded rod, the top end of the outer tube body is connected with an upper joint, the cross section of the inner portion of the outer tube body is of a polygonal structure, the cross section of the outer portion of the inner tube body is of a polygonal structure matched with the outer tube body, the top end of the inner tube body is inserted into the outer tube body from the bottom end of the outer tube body, an upper fixing plate is welded on the top of the outer tube body, a vertically through mounting through hole is formed in the middle of the upper fixing plate, a ball bearing is fixedly mounted in the mounting through hole, a lower fixing plate is arranged on the top of the inner tube body, the top end of the threaded tube penetrates through the ball bearing from the bottom end of the upper fixing plate to the upper portion of the upper fixing plate, the bottom end of the threaded rod is connected with the middle of the, a cavity is arranged in the guide shoe, a plurality of groups of clamping devices are arranged in the cavity, and an opening communicated with the cavity is arranged at the bottom of the guide shoe.

Preferably, multiunit clamping device all installs on the lateral wall of guide shoe, and clamping device includes connecting rod and supporting spring, be provided with multiunit bar opening on the lateral wall of guide shoe, the one end of connecting rod passes the bar opening from the outside of guide shoe and stretches into to the cavity in to the middle part and the bar opening rotatable coupling of connecting rod, the one end that the connecting rod is located the cavity inside is provided with the clamp plate that steps up the sucker rod, and the one end that the connecting rod is located the guide shoe outside is provided with the backup pad, supporting spring's both ends are connected with the lateral wall of guide shoe and the one end of backup pad orientation guide shoe respectively.

Preferably, the sets of clamping means are arranged helically on the side wall of the guide shoe.

Preferably, the opening at the bottom of the guide shoe is of a bell mouth structure, the cavity is of a cylindrical structure in the vertical direction, and the connecting part of the cavity and the opening is in smooth transition.

Preferably, the inner side wall of the outer pipe body is provided with a plurality of limiting grooves in the vertical direction, the top of the outer side wall of the inner pipe body is provided with a plurality of limiting sliding blocks, and the limiting sliding blocks are arranged in the limiting grooves in a sliding mode respectively.

Preferably, the upper joint is in threaded connection with the outer pipe body, and a connecting structure connected with the drill rod is arranged at the top end of the upper joint.

Preferably, the guide shoe is connected with the inner pipe body through threads.

Preferably, the clamping plate is of an arc-shaped structure, a rubber layer is arranged on the concave surface of the clamping plate, and a transverse anti-skidding tooth is arranged on one side, away from the clamping plate, of the rubber layer.

(III) advantageous effects

Compared with the prior art, the utility model provides a disconnected sucker rod fishing tool that takes off with adjustable length possesses following beneficial effect: the length-adjustable broken sucker rod fishing tool can judge the distance between the broken part of a sucker rod and the ground according to the length of the broken sucker rod, adjust the overall length of the inner pipe body and the outer pipe body by rotating the threaded pipe and by matching the threaded pipe with the threaded rod and simultaneously pulling the two ends of the inner pipe body and the outer pipe body, so that the effective length of the inner pipe body and the outer pipe body is matched with the broken length of the sucker rod, then the outer pipe body and the upper joint are installed, the upper joint is connected with the bottom output end of drilling pressure equipment, the bottom end of the inner pipe body is connected with a guide shoe, the broken sucker rod is fished, the length of the lengthened cylinder can be adjusted according to the broken length of the broken sucker rod, so that the length of the lengthened cylinder is matched with the broken length of the sucker rod, and the broken sucker rod is more convenient to fish, the use reliability is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of a part of an enlarged structure at a in fig. 1 according to the present invention;

fig. 3 is a schematic top view of the inside of the guide shoe of the present invention;

FIG. 4 is a schematic top view of the connection between the outer tube and the inner tube according to the present invention;

in the drawings, the reference numbers: 1. an upper joint; 2. guiding a shoe; 3. an outer tubular body; 4. an inner tube body; 5. a threaded pipe; 6. a threaded rod; 7. an upper fixing plate; 8. a ball bearing; 9. a lower fixing plate; 10. a cavity; 11. an opening; 12. a connecting rod; 13. a support spring; 14. a strip-shaped opening; 15. a clamping plate; 16. a support plate; 17. a limiting groove; 18. a limiting slide block; 19. a rubber layer; 20. and (4) anti-slip teeth.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the fishing tool for a length-adjustable broken sucker rod of the present invention comprises an upper joint 1, an extension cylinder and a guide shoe 2; the lengthening cylinder comprises an outer tube body 3, an inner tube body 4, a threaded tube 5 and a threaded rod 6, the top end of the outer tube body 3 is connected with an upper joint 1, the cross section of the inner portion of the outer tube body 3 is a polygonal structure, the cross section of the outer portion of the inner tube body 4 is a polygonal structure matched with the outer tube body 3, the top end of the inner tube body 4 is inserted into the outer tube body 3 from the bottom end of the outer tube body 3, an upper fixing plate 7 is welded on the top portion of the outer tube body 3, a vertically through mounting through hole is formed in the middle of the upper fixing plate 7, a ball bearing 8 is fixedly mounted in the mounting through hole, a lower fixing plate 9 is arranged on the top portion of the inner tube body 4, the top end of the threaded tube 5 penetrates through the ball bearing 8 from the bottom end of the upper fixing plate 7 to the upper portion of the upper fixing plate 7, the bottom end of the threaded rod 6, the guide shoe 2 is arranged at the bottom end of the inner tube body 4, a cavity 10 is arranged in the guide shoe 2, a plurality of groups of clamping devices are arranged in the cavity 10, and an opening 11 communicated with the cavity 10 is arranged at the bottom of the guide shoe 2; the distance between the fracture part of the sucker rod and the ground can be judged according to the length of the residual sucker rod on the ground, the effective lengths of the inner pipe body 4 and the outer pipe body 3 are matched with the breaking length of the sucker rod by rotating the threaded pipe 5 and by matching the threaded pipe 5 with the threaded rod 6 and simultaneously pulling the two ends of the inner pipe body 4 and the outer pipe body 3, the outer pipe body 3 and the upper joint 1 are installed, the upper joint 1 is connected with the bottom output end of the drilling pressure equipment, the bottom end of the inner pipe body 4 is connected with the guide shoe 2 to salvage the breaking sucker rod, the length of the lengthened cylinder can be adjusted according to the breaking length of the breaking cylinder, so that the length of the lengthened cylinder is matched with the breaking length of the sucker rod, and the breaking sucker rod is more conveniently salvaged, the use reliability is improved.

The utility model discloses a disconnected sucker rod fishing tool that takes off with adjustable length, multiunit clamping device all installs on the lateral wall of guide shoe 2, and clamping device includes connecting rod 12 and supporting spring 13, be provided with multiunit bar opening 14 on the lateral wall of guide shoe 2, the one end of connecting rod 12 passes bar opening 14 from the outside of guide shoe 2 and stretches into in cavity 10 to the middle part and bar opening 14 rotatable coupling of connecting rod 12, the one end that connecting rod 12 is located inside cavity 10 is provided with clamping plate 15 that steps up the sucker rod, the one end that connecting rod 12 is located the outside of guide shoe 2 is provided with backup pad 16, the both ends of supporting spring 13 are connected with the lateral wall of guide shoe 2 and the one end of backup pad 16 towards guide shoe 2 respectively; the disconnected sucker rod top of taking off stretches into in the cavity 10 through opening 11, along with the decline of guide shoe 2, the sucker rod rises certain height in cavity 10, through supporting spring 13's setting, make things convenient for the top of sucker rod to push open pinch-off blades 15 and rise in cavity 10, when lifting top connection 1, extension pipe and guide shoe 2, support backup pad 16 through supporting spring 13, make pinch-off blades 15 and the lateral wall of sucker rod paste tightly, thereby salvage the sucker rod.

The utility model relates to a length-adjustable fishing tool for broken sucker rods, wherein a plurality of groups of clamping devices are spirally distributed on the side wall of a guide shoe 2; the top of the sucker rod can enter the cavity 10 when the guide shoe 2 is rotated and pressed down.

The utility model discloses a length-adjustable broken sucker rod fishing tool, the opening 11 at the bottom of the guide shoe 2 is of a bell mouth structure, the cylindrical structure of the cavity 10 in the vertical direction, and the connection part of the cavity 10 and the opening 11 is in smooth transition; facilitating the entry of the top of the sucker rod into the cavity 10 from the opening 11.

The utility model discloses a length-adjustable breaking-off sucker rod fishing tool, which also comprises a plurality of limiting grooves 17 in the vertical direction arranged on the inner side wall of the outer pipe body 3, a plurality of limiting slide blocks 18 arranged on the top of the outer side wall of the inner pipe body 4, wherein the limiting slide blocks 18 are respectively arranged in the limiting grooves 17 in a sliding manner; the firmness of the connection between the outer pipe body 3 and the inner pipe body 4 is ensured.

The utility model discloses a length-adjustable broken sucker rod fishing tool, wherein an upper joint 1 is connected with an outer pipe body 3 through threads, and the top end of the upper joint 1 is provided with a connecting structure connected with a drill rod; the upper joint 1 and the outer pipe body 3 are conveniently installed and connected.

The utility model relates to a length-adjustable fishing tool for a broken sucker rod, wherein a guide shoe 2 is connected with an inner pipe body 4 through screw threads; the guide shoe 2 and the inner pipe body 4 are convenient to install and connect.

The utility model discloses a length-adjustable broken-off sucker rod fishing tool, the clamping plate 15 is of an arc structure, a rubber layer 19 is arranged on the concave surface of the clamping plate 15, and one side of the rubber layer 19, which is far away from the clamping plate 15, is provided with a transverse anti-skid tooth 20; the rubber layer 19 and the anti-slip teeth 20 increase the friction force between the sucker rod and the sucker rod, and the sucker rod is convenient to put forward.

The utility model relates to a length-adjustable broken-off sucker rod fishing tool, when in use, the distance between the fracture part of a sucker rod and the ground can be judged according to the length of the broken sucker rod and the length of the residual sucker rod on the ground, the threaded pipe 5 is rotated to pull the two ends of the inner pipe body 4 and the outer pipe body 3 simultaneously through the matching of the threaded pipe 5 and the threaded rod 6, so as to adjust the overall length of the inner pipe body 4 and the outer pipe body 3, so that the effective length of the inner pipe body 4 and the outer pipe body 3 is matched with the broken-off length of the sucker rod, then the outer pipe body 3 is installed with the upper joint 1, the upper joint 1 is connected with the bottom output end of drilling pressure equipment, the bottom end of the inner pipe body 4 is connected with a guide shoe 2 to salvage the broken-off sucker rod, the broken-off sucker rod can adjust the length of an extension cylinder according to the broken-off length of, it is more convenient to take off the sucker rod to salvage absolutely, improve the reliability of use, the sucker rod top that takes off absolutely stretches into in the cavity 10 through opening 11, along with the decline of guide shoe 2, the sucker rod rises certain height in cavity 10, through supporting spring 13's setting, make things convenient for the top of sucker rod to push open clamping plate 15 and rise in cavity 10, when with top connection 1, extension pipe and guide shoe 2 lift, support backup pad 16 through supporting spring 13, make clamping plate 15 paste tightly with the lateral wall of sucker rod, thereby salvage the sucker rod, through rubber layer 19 and anti-skidding tooth 20 carry increase and the sucker rod between frictional force, conveniently say the sucker rod and carry out.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A length-adjustable broken sucker rod fishing tool comprises an upper joint (1), a lengthened cylinder and a guide shoe (2); the lengthening cylinder is characterized by comprising an outer pipe body (3), an inner pipe body (4), a threaded pipe (5) and a threaded rod (6), wherein the top end of the outer pipe body (3) is connected with an upper joint (1), the cross section of the inner part of the outer pipe body (3) is of a polygonal structure, the cross section of the outer part of the inner pipe body (4) is of a polygonal structure matched with the outer pipe body (3), the top end of the inner pipe body (4) is inserted into the outer pipe body (3) from the bottom end of the outer pipe body (3), an upper fixing plate (7) is welded on the top of the outer pipe body (3), a vertically through mounting through hole is formed in the middle of the upper fixing plate (7), a ball bearing (8) is fixedly mounted in the mounting through hole, a lower fixing plate (9) is arranged on the top of the inner pipe body (4), and the top end of the threaded pipe (5) penetrates through the ball bearing (8) from the bottom end of the, the bottom end of the threaded rod (6) is connected with the middle of the top end of the lower fixing plate (9), the top end of the threaded rod (6) is inserted into the bottom end of the threaded pipe (5) in a screwed mode, the guide shoe (2) is installed at the bottom end of the inner pipe body (4), a cavity (10) is formed in the guide shoe (2), multiple groups of clamping devices are arranged in the cavity (10), and an opening (11) communicated with the cavity (10) is formed in the bottom of the guide shoe (2).

2. The fishing tool for broken sucker rod with adjustable length of claim 1, the plurality of groups of clamping devices are all arranged on the side wall of the guide shoe (2), each clamping device comprises a connecting rod (12) and a supporting spring (13), a plurality of groups of strip-shaped openings (14) are arranged on the side wall of the guide shoe (2), one end of the connecting rod (12) passes through the strip-shaped openings (14) from the outer side of the guide shoe (2) and extends into the cavity (10), the middle part of the connecting rod (12) is rotatably connected with the strip-shaped opening (14), one end of the connecting rod (12) positioned in the cavity (10) is provided with a clamping plate (15) for clamping the sucker rod, one end of the connecting rod (12) positioned outside the guide shoe (2) is provided with a supporting plate (16), and two ends of the supporting spring (13) are respectively connected with the outer side wall of the guide shoe (2) and one end, facing the guide shoe (2), of the supporting plate (16).

3. The fishing tool for the broken sucker rod with the adjustable length as claimed in claim 2, wherein the plurality of groups of clamping devices are spirally distributed on the side wall of the guide shoe (2).

4. The fishing tool for the broken sucker rod with the adjustable length as claimed in claim 3, wherein the opening (11) at the bottom of the guide shoe (2) is of a bell mouth structure, the cavity (10) is of a cylindrical structure in the vertical direction, and the connection between the cavity (10) and the opening (11) is in smooth transition.

5. The fishing tool for broken sucker rods with adjustable lengths as claimed in claim 4, further comprising a plurality of vertically-oriented limiting grooves (17) formed in the inner side wall of the outer pipe (3), a plurality of limiting sliding blocks (18) arranged on the top of the outer side wall of the inner pipe (4), wherein the plurality of limiting sliding blocks (18) are slidably arranged in the plurality of limiting grooves (17), respectively.

6. The fishing tool for the broken sucker rod with the adjustable length as claimed in claim 5, wherein the upper joint (1) is in threaded connection with the outer pipe body (3), and a connecting structure connected with a drill rod is arranged at the top end of the upper joint (1).

7. The fishing tool for broken sucker rods with adjustable length as claimed in claim 6, wherein the guide shoe (2) is connected with the inner pipe body (4) through screw threads.

8. The fishing tool for the broken sucker rod with the adjustable length as claimed in claim 7, wherein the clamping plate (15) is of an arc structure, a rubber layer (19) is arranged on the concave surface of the clamping plate (15), and a lateral anti-slip tooth (20) is arranged on one side, away from the clamping plate (15), of the rubber layer (19).