Outer hook for oil well salvage

Abstract

The outer hook comprises an upper connecting seat, a screw joint hole is formed in the upper connecting seat, a connecting seat is fixedly installed at the bottom of the upper connecting seat, meanwhile, a fixing seat is fixedly welded to the bottom of the connecting seat, and a first hook column, a second hook column and a third hook column are installed at the bottom of the fixing seat respectively. A plurality of groups of outer hooks are fixedly arranged on the first hook column, the second hook column and the third hook column. According to the outer hook for oil well fishing, the first hook column, the second hook column and the third hook column are prone to stress deformation, the outer hook bodies on the first hook column, the second hook column and the third hook column are prone to deformation and cannot be used, and at the moment, bolts on the fixing base are detached, so that the corresponding hook columns can be separated from the interiors of inserting grooves; and the product can be continuously used under the condition that other parts of the product are not damaged, so that the use cost of the product is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield equipment field, concretely is a kind of outer hook for oil well fishing. BACKGROUND

[0002] The working principle of the hook used for oil well fishing cable is mainly to use the shape and structure of the hook to hook and fix the cable, so as to pull it out of the well. In actual operation, the operator will lower the hook into the well, so that the hook contacts the cable. Then, by applying a certain pulling force or rotational force, the hook hooks the cable. Once the hook firmly grabs the cable, the cable can be pulled out of the well by lifting or rotating the hook. Different types of hooks may have different designs and working principles to adapt to different fishing needs.

[0003] The entire hook is generally of an integral structure, mainly comprising an upper adapter and a hook rod. The upper adapter and the hook rod are fixed by welding. During long-term operation, the hooks and the rod body on the hook rod are prone to bending and deformation, which causes the equipment to be unable to be used, directly increasing the use cost of the equipment. UTILITY MODEL CONTENT

[0004] The utility model aims to provide an outer hook for oil well fishing to solve the defect that the hooks and the rod body on the hook rod are prone to bending and deformation during long-term operation, which causes the equipment to be unable to be used, directly increasing the use cost of the equipment.

[0005] To achieve the above-mentioned purpose, an outer hook for oil well fishing is provided, comprising an upper adapter. A threaded hole is formed in the inside of the upper adapter. A connecting seat is fixedly installed at the bottom of the upper adapter. A fixed seat is welded and fixed at the bottom of the connecting seat. First, second and third hook columns are installed at the bottom of the fixed seat. A plurality of outer hooks are fixedly arranged on the first, second and third hook columns.

[0006] Preferably, three groups of insertion slots are uniformly formed at the bottom of the fixed seat. The diameters of the first, second and third hook columns are consistent.

[0007] Preferably, the top of the first, second and third hook columns is inserted into the three groups of insertion slots formed at the bottom of the fixed seat. Threaded holes are formed at the outside of the top of the first, second and third hook columns. Fixed bolts are screwed and fixed in the threaded holes through the through holes formed in the fixed seat.

[0008] Preferably, the top of the first hook column, the second hook column and the third hook column are fixedly provided with positioning seats, and positioning grooves are formed on the inner walls of the three groups of plug-in grooves, the size of the positioning grooves and the positioning seats is matched, the positioning seats are inserted into the positioning grooves, and the cross sections of the positioning grooves and the positioning seats are rectangular.

[0009] Preferably, the first hook column, the second hook column and the third hook column are arranged in parallel, the length of the first hook column is greater than that of the third hook column, and the length of the third hook column is greater than that of the second hook column.

[0010] Preferably, the bottom of the first hook column, the second hook column and the third hook column is provided with a pointed end, and the first hook column, the second hook column and the third hook column are detachable at the bottom of the fixing seat.

[0011] Compared with the prior art, the utility model has the advantages of the following:

[0012] 1. When the utility model is used, the first hook column, the second hook column and the third hook column are easy to deform under stress, the external hooks thereon are easy to deform and cannot be used, at this time, the bolt on the fixing seat is disassembled, the corresponding hook column can be separated from the inside of the plug-in groove, the product can continue to be used under the condition that other parts of the product are not damaged, and therefore the use cost of the product is prolonged.

[0013] 2. In the utility model, the lengths of the first hook column, the second hook column and the third hook column are different, the hooks of different lengths can adapt to ropes and cables of different depths and positions, the shorter hook column can more effectively grab the ropes and cables close to the well mouth and shallow positions, the longer hook column can reach the ropes and cables in the deeper positions in the well, thereby expanding the range and capacity of fishing, the ropes and cables can be more uniformly stressed during being pulled up, the risk of rope and cable slipping is reduced, and the stability of the whole fishing operation is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the structure of the utility model;

[0015] Figure 2 It is a bottom view of the structure of the utility model;

[0016] Figure 3 It is a top view of the structure of the utility model;

[0017] Figure 4 It is a schematic view of the fixing seat and the mounting structure thereof;

[0018] Figure 5 It is Figure 1 a cross-sectional structure schematic view.

[0019] The figure mark: 1, upper connector; 2, connecting seat; 3, fixed seat; 31, plug-in groove; 32, positioning groove; 4, first hook column; 5, second hook column; 6, third hook column; 61, external hook; 62, pointed end; 63, positioning seat. DETAILED DESCRIPTION

[0020] Please refer to Figures 1-5 The utility model provides a kind of external hook for oil well fishing, including upper connector 1, and the inside of upper connector 1 is equipped with screw hole, and the bottom of upper connector 1 is fixedly installed with connecting seat 2, while the bottom of connecting seat 2 is welded with fixed seat 3, and the bottom of fixed seat 3 is installed first hook column 4, second hook column 5 and third hook column 6 respectively, and first hook column 4, second hook column 5 and third hook column 6 are all fixed with multiple groups of external hooks 61.

[0021] As can be seen from the above, in use, the operator fixes the upper connector 1 with the connecting shaft, and the operator lowers the first hook column 4, the second hook column 5 and the third hook column 6 into the well, so that the multiple groups of external hooks 61 on the first hook column 4, the second hook column 5 and the third hook column 6 come into contact with the rope cable; by exerting a certain tension or rotational force on the upper connector 1, the connecting seat 2 and the fixed seat 3, the external hooks 61 on the first hook column 4, the second hook column 5 and the third hook column 6 hook the rope cable; once the hooks firmly grasp the rope cable, the rope cable can be pulled out of the well by lifting or rotating the hooks; as the use time increases, the first hook column 4, the second hook column 5 and the third hook column 6 are prone to deformation under stress, and the external hooks 61 thereon are prone to deformation and cannot be used; at this time, the bolts on the fixed seat 3 are disassembled, so that the corresponding hook columns can be separated from the inside of the plug-in groove 31, and the product can continue to be used under the condition that other components of the product are not damaged, thereby prolonging the use cost of the product; when the top of the first hook column 4, the second hook column 5 and the third hook column 6 is inserted into the plug-in groove 31, the positioning groove 32 and the positioning seat 63 are used for positioning installation, so that the multiple groups of external hooks 61 on the outer side of the first hook column 4, the second hook column 5 and the third hook column 6 are directed outward, facilitating the rotational winding and taking out of the rope cable inside the oil well.

[0022] As a preferred embodiment, three groups of plug-in grooves 31 are uniformly provided on the bottom of the fixed seat 3, and the diameters of the first hook column 4, the second hook column 5 and the third hook column 6 are consistent.

[0023] As a preferred embodiment, the top of the first hook column 4, the second hook column 5 and the third hook column 6 is respectively inserted into the inside of the three groups of plug-in grooves 31 provided on the bottom of the fixed seat 3, and screw holes are provided on the outer side of the top of the first hook column 4, the second hook column 5 and the third hook column 6, and the fixed bolts are screwed into the inside of the screw holes through the through holes provided on the fixed seat 3.

[0024] As a preferable embodiment, the top of the first hook column 4, the second hook column 5 and the third hook column 6 are fixedly provided with positioning seats 63, and the inner wall of the three groups of insertion slots 31 are provided with positioning slots 32, the size of the positioning slots 32 and the positioning seats 63 are matched, and the positioning seats 63 are inserted into the positioning slots 32, and the cross section of the positioning slots 32 and the positioning seats 63 are rectangular.

[0025] As can be seen from the above, in use, the lengths of the first hook column 4, the second hook column 5 and the third hook column 6 are inconsistent, and the hooks with different lengths can adapt to the ropes with different depths and positions; the shorter hook column can more effectively grab the ropes close to the wellhead and in a shallow position; and the longer hook column can reach the ropes in a deeper position in the well, thereby expanding the range and capacity of fishing; the three groups of hook columns with inconsistent lengths can contact and fix the ropes from different angles and positions when grabbing the ropes; the multi-directional grabbing mode can make the ropes more evenly stressed during being pulled up, reduce the risk of rope slipping, and enhance the stability of the whole fishing operation.

[0026] As a preferable embodiment, the first hook column 4, the second hook column 5 and the third hook column 6 are parallelly arranged, the length of the first hook column 4 is greater than the length of the third hook column 6, and the length of the third hook column 6 is greater than the length of the second hook column 5.

[0027] As a preferable embodiment, the bottom of the first hook column 4, the second hook column 5 and the third hook column 6 are provided with pointed ends 62, and the first hook column 4, the second hook column 5 and the third hook column 6 are detachably arranged at the bottom of the fixing seat 3.

[0028] Working principle: the operator fixes the upper connector 1 with the connecting shaft, the operator lowers the first hook column 4, the second hook column 5 and the third hook column 6 into the well, so that the multiple groups of external hooks 61 on the first hook column 4, the second hook column 5 and the third hook column 6 are in contact with the rope cable; by exerting a certain tension or rotary force on the upper connector 1, the connecting seat 2 and the fixing seat 3, the external hooks 61 on the first hook column 4, the second hook column 5 and the third hook column 6 hook the rope cable; once the hooks firmly grasp the rope cable, the rope cable can be pulled out of the well by lifting or rotating the hooks; as the use time increases, the first hook column 4, the second hook column 5 and the third hook column 6 are prone to deformation under force, and the external hooks 61 thereon are prone to deformation and cannot be used, at which time the bolts on the fixing seat 3 are disassembled, so that the corresponding hook column can be separated from the inside of the plug-in groove 31, and the product can continue to be used under the condition that other parts of the product are not damaged, thereby prolonging the use cost of the product; when the first hook column 4, the second hook column 5 and the third hook column 6 are inserted into the plug-in groove 31, the positioning groove 32 and the positioning seat 63 are positioned and installed, so that the multiple groups of external hooks 61 on the outer side of the first hook column 4, the second hook column 5 and the third hook column 6 are outward, facilitating the rotary winding and taking out work of the rope cable in the oil well; the lengths of the first hook column 4, the second hook column 5 and the third hook column 6 are inconsistent, and hooks of different lengths can adapt to rope cables of different depths and positions; shorter hook columns can more effectively grasp the rope cable close to the wellhead and in a relatively shallow position; and longer hook columns can reach the rope cable in a deeper position in the well, thereby expanding the range and capacity of fishing; the three groups of hook columns with inconsistent lengths can contact and fix the rope cable from different angles and positions; the multi-directional grasping mode can make the rope cable more evenly stressed during being pulled up, reduce the risk of rope cable slipping, and enhance the stability of the entire fishing operation.

[0029] The embodiments of the utility model are given for example and description, although the embodiments of the utility model have been shown and described above, it is understood that the above-mentioned embodiments are exemplary, and cannot be understood as the limitation of the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. An external hook for oil well fishing, comprising an upper socket (1), characterized in that: The upper adapter (1) is internally provided with screw holes, and the bottom of the upper adapter (1) is fixedly provided with a connecting seat (2), and the bottom of the connecting seat (2) is welded with a fixing seat (3), and the bottom of the fixing seat (3) is respectively provided with a first hook column (4), a second hook column (5) and a third hook column (6), and a plurality of external hooks (61) are fixedly arranged on the first hook column (4), the second hook column (5) and the third hook column (6).

2. An external hook for oil well fishing according to claim 1, characterized in that: The bottom of the fixing seat (3) is uniformly provided with three groups of insertion grooves (31), and the diameters of the first hook column (4), the second hook column (5) and the third hook column (6) are consistent.

3. An external hook for oil well fishing according to claim 2, wherein: The top of the first hook column (4), the second hook column (5) and the third hook column (6) is respectively inserted into the three groups of insertion grooves (31) at the bottom of the fixing seat (3), and the top of the first hook column (4), the second hook column (5) and the third hook column (6) is externally provided with screw holes, and the fixing bolts are screwed into the screw holes through the through holes in the fixing seat (3).

4. An external hook for oil well fishing according to claim 3, wherein: The top of the first hook column (4), the second hook column (5) and the third hook column (6) is fixedly provided with a positioning seat (63), and the inner wall of the three groups of insertion grooves (31) is provided with a positioning groove (32), and the size of the positioning groove (32) and the positioning seat (63) is matched, and the positioning seat (63) is inserted into the positioning groove (32), and the cross section of the positioning groove (32) and the positioning seat (63) is rectangular.

5. An external hook for oil well fishing according to claim 1, wherein: The first hook column (4), the second hook column (5) and the third hook column (6) are arranged in parallel, and the length of the first hook column (4) is greater than that of the third hook column (6), and the length of the third hook column (6) is greater than that of the second hook column (5).

6. An external hook for oil well fishing according to claim 1, wherein: The bottom of the first hook column (4), the second hook column (5) and the third hook column (6) is provided with a pointed end (62), and the first hook column (4), the second hook column (5) and the third hook column (6) are detachable at the bottom of the fixing seat (3).

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