Efficient force-increasing jam-releasing fisher

Abstract

The utility model discloses an efficient force-increasing jam-releasing fisher which comprises a lifting rod, an orbital transfer box, a pressure transmitting pipe, a hanger, a transition connecting rod, a lifting cap, a piston connecting rod, a first-stage hydraulic cylinder, a second-stage hydraulic cylinder, a fishing connecting rod, an anchor and a fishing spear connector. One end of the outer side face of the lifting rod is in screwed connection with an inner hole of the track transfer box, the inner side face of the lifting rod is connected with the pressure transmitting pipe, and the pressure transmitting pipe is located in the track transfer box. A hanger is arranged on the outer side face of one end of the track transfer box, a transition connecting rod is connected into the track transfer box in a sliding mode, a lifting cap is arranged on the inner side face of the hanger, and the outer side face of the lifting cap is connected with a first-stage hydraulic cylinder through a screw thread. According to the efficient force-increasing jam-releasing fisher, the strength of the whole fisher can be improved, the accumulated eccentric tolerance after all the components are assembled is eliminated, meanwhile, the lifting capacity of ground equipment is improved, and the working performance of underground fishing is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil and gas well downhole fishing technical field, concretely to a kind of efficient force increasing fishing jar. BACKGROUND

[0002] The existing downhole fishing jar has the following defects: (1) the parts of fishing jar are connected by welding, which reduces the strength of metal parts and causes various defects of welding; (2) the piston, hydraulic cylinder and piston connecting rod are eccentric after equipment assembly, which affects the fishing accuracy; (3) the existing anchor is arranged on the upper end of the hydraulic cylinder, and the ground equipment cannot assist to increase the lifting force, so the ground control is low. SUMMARY

[0003] The utility model solves the technical problems of overcoming the existing defects, providing an efficient force increasing fishing jar, which can increase the strength of the whole fishing jar, eliminate the cumulative eccentricity tolerance of each part after assembly, and improve the lifting capacity of the ground equipment, so as to effectively solve the problems in the background technology.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: an efficient force increasing fishing jar, which comprises a lifting rod, a variable rail box, a pressure transmission pipe, a hanger, a transition connecting rod, a lifting cap, a piston connecting rod, a primary hydraulic cylinder, a secondary hydraulic cylinder, a fishing connecting rod, an anchor and a spear joint.

[0005] The outer side of the lifting rod is connected with the inner hole thread of the variable rail box at one end, and the inner side of the lifting rod is connected with the pressure transmission pipe.

[0006] The outer side of one end of the variable rail box is provided with a hanger, and the transition connecting rod is slidably connected in the variable rail box.

[0007] One end of the transition connecting rod is connected with the piston connecting rod through thread, one end of the primary hydraulic cylinder is connected with the secondary hydraulic cylinder through thread, the piston connecting rod passes through the inside of the primary hydraulic cylinder and the secondary hydraulic cylinder and is connected with the fishing connecting rod through thread, the fishing connecting rod is provided with a water channel, the fishing connecting rod passes through the anchor, the anchor is connected with the secondary hydraulic cylinder through anchor suspension and the third ball, and one end of the fishing connecting rod is connected with the spear joint.

[0008] As a preferred technical scheme of the utility model, a first fixed pin is arranged between the lifting rod and the variable rail box.

[0009] As a preferred technical scheme of the utility model, one end of the pressure transmission pipe is provided with a sealing seat, and a first ball is arranged between the sealing seat and the lifting rod.

[0010] As a preferred technical scheme of the utility model, the second fixed pin is arranged between the end of the track changing box and the transition connecting rod.

[0011] As a preferred technical scheme of the utility model, the piston connecting rod is located in the primary liquid cylinder, a sealing ring is arranged between the piston connecting rod and the primary liquid cylinder, and the sealing ring is fixed on the primary liquid cylinder through the blocking ring and the fixed ring.

[0012] As a preferred technical scheme of the utility model, the outer side surface of the piston connecting rod is connected with the piston through the ingot ring, and the outer side surface of the piston is attached to the inner side surface of the secondary liquid cylinder.

[0013] As a preferred technical scheme of the utility model, the anchor claw is arranged on the inner wall of the anchor.

[0014] As a preferred technical scheme of the utility model, the pressure relief hole is arranged on the spear joint.

[0015] As a preferred technical scheme of the utility model, the inner side surface of the hanger is connected with the lifting cap through the second ball.

[0016] As a preferred technical scheme of the utility model, the inside of the lifting rod, the pressure transmission pipe, the transition connecting rod and the piston connecting rod is connected, and one end of the piston connecting rod is connected with the water channel.

[0017] Compared with the prior art, the utility model has the advantages of (1) the components are connected through the screw thread, without welding to cause the metal material strength to be reduced and various defects caused by welding, and the equipment use reliability is enhanced; (2) the primary liquid cylinder, the secondary liquid cylinder and the piston connecting rod are connected in series to reduce the operation pressure and increase the lifting tonnage, and the piston, the liquid cylinder and the piston connecting rod are adjusted and compensated for the eccentricity caused by the cumulative tolerance of the equipment after assembly; (3) the fishing connecting rod passes through the anchor structure, the anchor structure of the prior art is changed to be hung on the upper end of the liquid cylinder, the ground equipment can completely assist the lifting tension in the fishing process, and the ground operation controllability is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic view of the utility model;

[0019] Figure 2 It is the fishing and stuck releasing action schematic view of the utility model;

[0020] Figure 3 It is the track changing process schematic view of the track changing box;

[0021] Figure 4 It is the connection schematic view of the secondary liquid cylinder and the piston connecting rod;

[0022] Figure 5 Figure for the anchor and fishing connecting rod at the end of the link.

[0023] Figure: 1 lifting rod, 2 sealing seat, 3 first fixed pin, 4 first ball, 5 variable track box, 6 pressure tube, 7 hanger, 8 second fixed pin, 9 second ball, 10 lifting cap, 11 primary hydraulic cylinder, 12 transition connecting rod, 13 sealing ring, 14 blocking ring, 15 fixed ring, 16 secondary hydraulic cylinder, 17 piston connecting rod, 18 treasure ring, 19 piston, 20 fishing connecting rod, 21 anchor suspension, 22 third ball, 23 anchor, 24 anchor claw, 25 spear joint. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] As Figure 1 , the present application provides a technical scheme: a high-efficiency force-increasing fishing tool, comprising a lifting rod 1, a variable track box 5, a pressure tube 6, a hanger 7, a transition connecting rod 12, a lifting cap 10, a piston connecting rod 17, a primary hydraulic cylinder 11, a secondary hydraulic cylinder 16, a fishing connecting rod 20, an anchor 23 and a spear joint 25.

[0026] One end of the outer side surface of the lifting rod 1 is connected with the inner hole thread of the variable track box 5, and a first fixed pin 3 is arranged between the lifting rod 1 and the variable track box 5 to prevent the thread of the lifting rod 1 and the variable track box 5 from being retracted.

[0027] The inner side surface of the lifting rod 1 is connected with the pressure tube 6, the pressure tube 6 is located in the variable track box 5, one end of the pressure tube 6 is provided with a sealing seat 2, a first ball 4 is arranged between the sealing seat 2 and the lifting rod 1, the sealing seat 2 connects the lifting rod 1 and the pressure tube 6 through the first ball 4, and the sealing seat 2 plays a role in transmitting pressure.

[0028] The outer side surface of one end of the variable track box 5 is provided with the hanger 7, and the variable track box 5 completes the actions of hooking and unhooking with the hanger 7 by changing the track.

[0029] The transition connecting rod 12 is slidably connected in the variable track box 5, the inner side surface of the hanger 7 is connected with the lifting cap 10 through a second ball 9, the outer side surface of the lifting cap 10 is connected with the primary hydraulic cylinder 11 through a thread, and a second fixed pin 8 is arranged between the end of the variable track box 5 and the transition connecting rod 12 to prevent the variable track box 5 and the transition connecting rod 12 from rotating relative to each other.

[0030] One end of the transition connecting rod 12 is connected to the piston connecting rod 17 by a threaded connection. The piston connecting rod 17 is located in the primary liquid cylinder 11. A sealing ring 13 is provided between the piston connecting rod 17 and the primary liquid cylinder 11. The sealing ring 13 is fixed to the primary liquid cylinder 11 by a retaining ring 14 and a fixing ring 15.

[0031] One end of the first-level liquid cylinder 11 is connected to the second-level liquid cylinder 16 by a thread, and the piston 19 is fixed to the piston connecting rod 17 by a yuanbao ring 18. The piston connecting rod 17 passes through the interior of the first-level liquid cylinder 11 and the second-level liquid cylinder 16 and is threadedly connected to the salvage connecting rod 20. A water trough is provided on the salvage connecting rod 20. The salvage connecting rod 20 passes through the anchor 23, and the anchor 23 is connected to the second-level liquid cylinder 16 through the anchor suspension 21 and the third ball 22. The salvage connecting rod 20 transmits pressure through the water trough, and the anchor claw 24 moves radially under pressure and is anchored on the inner wall of the sleeve of the anchor 23. One end of the salvage connecting rod 20 is connected to the spear joint 25, and the spear joint 25 is provided with a pressure relief hole. The lifting rod 1, the pressure transmission pipe 6, the transition connecting rod 12 and the interior of the piston connecting rod 17 are connected, and one end of the piston connecting rod 17 is connected to the water trough.

[0032] like Figure 2 The spear joint moves upward under the pressure of the piston rod 17 and the piston 19. At this time, the spear structure moves upward under the pressure of the secondary hydraulic cylinder 16 and the piston 19. The spear joint 25 connects to the salvage spear to catch the fallen objects in the well and moves upward at the same time to complete the salvage and unblocking action.

[0033] like Figure 3 When one salvage is completed and the next salvage is to be carried out, the ground equipment lifting system lifts and lowers the salvage string, and the salvage string drives the lifting rod 1 to drive the track change box 5 to change the track and hook the hanger.

[0034] The anchor is restored by lifting the first level hydraulic cylinder 11 and the second level hydraulic cylinder 16 by the lifting cap 10 Figure 1 The salvage status shown is shown. Continue to repeat the above actions to salvage.

[0035] like Figure 4 The first-stage liquid cylinder 11 and the second-stage liquid cylinder 16 in the utility model adopt a detachable sealing ring 13, and the retaining ring 14 and the fixing ring 15 support the fixed sealing ring 13. Because the first-stage liquid cylinder 11 and the second-stage liquid cylinder 16, the piston connecting rod 17 are multiple groups connected in series to achieve the purpose of reducing the operating pressure and increasing the tonnage. There are also multiple groups of pistons 19 fixed on the piston connecting rod 17 with Yuanbao rings 18. Therefore, this design structure plays a role in mediating and compensating for the eccentricity of the piston 19 and the first liquid cylinder 11, the second liquid cylinder 16 and the piston connecting rod 17 caused by the cumulative tolerance after the equipment is assembled. In addition, the utility model does not cause the reduction of metal material strength and various defects caused by welding, thereby increasing the reliability of equipment performance.

[0036] As Figure 5 The utility model discloses a fishing connecting rod 20 passes through the anchor 23 structure, changes the prior art anchor 23 and hangs the cylinder hoisting structure on the upper end of the cylinder, and thus the utility model can completely assist to increase the lifting tension in the fishing process ground equipment, and the structure ground has controllable performance.

[0037] Although the embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency force-boosting unblocking salvage device, characterized by: It comprises a lifting rod (1), a track change box (5), a pressure transmission pipe (6), a hanger (7), a transition connecting rod (12), a lifting cap (10), a piston connecting rod (17), a first-level hydraulic cylinder (11), a second-level hydraulic cylinder (16), a fishing connecting rod (20), an anchor (23) and a fishing spear joint (25); One end of the outer side surface of the lifting rod (1) is connected to the inner hole of the track change box (5) by threaded connection, and the inner side surface of the lifting rod (1) is connected to the pressure transmission tube (6), and the pressure transmission tube (6) is located in the track change box (5); A hanger (7) is provided on the outer side surface of one end of the track change box (5), a transition connecting rod (12) is slidably connected inside the track change box (5), a lifting cap (10) is provided on the inner side surface of the hanger (7), and the outer side surface of the lifting cap (10) is connected to the first-level liquid cylinder (11) through a thread; One end of the transition connecting rod (12) is connected to the piston connecting rod (17) through a thread, and one end of the first-level liquid cylinder (11) is connected to the second-level liquid cylinder (16) through a thread. The piston connecting rod (17) passes through the interior of the first-level liquid cylinder (11) and the second-level liquid cylinder (16) and is threadedly connected to the salvage connecting rod (20). The salvage connecting rod (20) is provided with a water trough. The salvage connecting rod (20) passes through the anchor (23). The anchor (23) is connected to the second-level liquid cylinder (16) through the anchor suspension (21) and the third ball (22). One end of the salvage connecting rod (20) is connected to the spear joint (25).

2. The high-efficiency force-boosting jam-releasing salvage device according to claim 1, characterized in that: A first fixing pin (3) is provided between the lifting rod (1) and the track change box (5).

3. The high-efficiency force-boosting jam-releasing fishing device according to claim 1, characterized in that: A sealing seat (2) is provided at one end of the pressure transmission tube (6), and a first ball (4) is provided between the sealing seat (2) and the lifting rod (1).

4. The high-efficiency force-boosting jam-releasing salvage device according to claim 1, characterized in that: A second fixing pin (8) is provided between the end of the track change box (5) and the transition connecting rod (12).

5. The high-efficiency force-boosting jam-releasing salvage device according to claim 1, characterized in that: The piston connecting rod (17) is located in the primary liquid cylinder (11), and a sealing ring (13) is provided between the piston connecting rod (17) and the primary liquid cylinder (11). The sealing ring (13) is fixed to the primary liquid cylinder (11) via a retaining ring (14) and a fixing ring (15).

6. The high-efficiency force-boosting jam-releasing salvage device according to claim 1, characterized in that: The outer side surface of the piston connecting rod (17) is connected to the piston (19) through the ingot ring (18), and the outer side surface of the piston (19) is in contact with the inner side surface of the secondary liquid cylinder (16).

7. The high-efficiency force-boosting jam-releasing salvage device according to claim 1, characterized in that: Anchor claws (24) are provided on the inner wall of the anchor (23).

8. The high-efficiency force-boosting jam-releasing salvage device according to claim 1, characterized in that: The lance joint (25) is provided with a pressure relief hole.

9. The high-efficiency force-boosting jam-releasing fishing device according to claim 1, characterized in that: The inner side surface of the hanger (7) is connected to the lifting cap (10) via a second ball (9).

10. The high-efficiency force-boosting jam-releasing salvage device according to claim 1, characterized in that: The interiors of the lifting rod (1), the pressure transmission pipe (6), the transition connecting rod (12) and the piston connecting rod (17) are connected, and one end of the piston connecting rod (17) is connected to the water trough.

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