Adjustable oil pipe fishing spear

Abstract

The utility model discloses an adjustable oil pipe fishing spear, which relates to the technical field of oil pipe fishing, and comprises a fishing rod, a plurality of groups of clamping mechanisms are arranged in the fishing rod, each group of clamping mechanisms comprises a telescopic plate, a plurality of grooves are formed in the surface of the fishing rod, and a support column is fixedly arranged on the side wall, far away from an extrusion part, of each telescopic plate. Column grooves matched with the supporting columns are formed in the fishing rods, first springs sleeve the outer sides of the supporting columns, mounting grooves are formed in the tops of the sides, close to the extrusion part, of the telescopic plates, ejection blocks are hinged to the positions, located in the mounting grooves, of the telescopic plates, second springs are fixedly arranged on the side walls of the ejection blocks, and the ends, away from the side walls of the ejection blocks, of the second springs are fixed to the inner walls of the mounting grooves. The ejection block is driven by the elastic force of the second spring to turn outwards, then the multiple clamping parts abut against the inner wall of the oil pipe and are clamped, then the fishing rod is driven by the elevator to move upwards to enable the multiple sets of clamping mechanisms to clamp the oil pipe to be lifted out of an oil well, the elevator does not need to drive the fishing rod to sink by a deep distance, and the construction difficulty of oil pipe fishing is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil pipe fishing technical field, concretely relates to an adjustable oil pipe fishing spear. BACKGROUND

[0002] With the expansion of energy market, the crude oil exploitation process speeds up, the water content of oil well production liquid increases, the corrosion and fracture probability of oil pipe speeds up, the corroded and fractured oil pipe seriously influences normal production of oil field, and the oil pipe in the oil well needs to be fished up.

[0003] The fishing spear in the prior art fishes the oil pipe through four groups of support rods that can be expanded, the support rods need to be sent into the bottom end of the oil pipe during use, then the four groups of support rods are expanded to support the bottom end of the oil pipe, and the fishing spear and the oil pipe are taken out upwardly through the elevator, when the length of the oil pipe is large, the four groups of support rods need to be sunk by a deep distance, which tests the lifting capacity of the elevator to a certain extent, and increases the construction difficulty of the oil pipe fishing. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an adjustable oil pipe fishing spear to solve the problem that the four groups of support rods need to be sunk by a deep distance when the length of the oil pipe is large, which tests the lifting capacity of the elevator to a certain extent, and increases the construction difficulty of the oil pipe fishing.

[0005] To achieve the above object, the utility model provides an adjustable oil pipe fishing spear, which comprises a fishing rod, a plurality of clamping mechanisms are arranged in the fishing rod, the plurality of clamping mechanisms all comprise an expansion plate, a plurality of grooves are formed in the surface of the fishing rod, the expansion plate is arranged in the groove, one side of the expansion plate extends out of the fishing rod and is provided with a pressing part, a support is fixedly arranged on the side wall away from the pressing part of the expansion plate, a column groove matched with the support is formed in the fishing rod, a first spring is sleeved on the outer side of the support, and the two ends of the first spring are fixedly connected with the expansion plate and the inner wall of the groove respectively; an installation groove is formed in the top of the side of the expansion plate close to the pressing part, a top block is hingedly arranged in the installation groove, a second spring is fixedly arranged on the side wall of the top block, and one end of the second spring away from the side wall of the top block is fixedly connected with the inner wall of the installation groove.

[0006] Through the elastic force of the second spring, the top block is driven to turn outward, a plurality of clamping parts are in contact with and clamped to the inner wall of the oil pipe, and the fishing rod is driven upwardly by the elevator to make the plurality of clamping mechanisms clamp and take out the oil pipe from the oil well.

[0007] As a further improvement of the technical scheme, a guide column for inserting into the oil pipe is fixedly arranged at the bottom end of the fishing rod, and the guide column is in an inverted conical structure.

[0008] By adopting the above scheme, the guide column with the inverted cone structure guides the fishing rod into the oil pipe, avoiding the fishing rod being stuck at the top of the oil pipe and being difficult to enter.

[0009] As a further improvement of the technical scheme, the surface of the guide column is coated with a corrosion-resistant coating, and the corrosion-resistant coating is an epoxy resin coating.

[0010] By adopting the above scheme, the epoxy resin coating has strong corrosion resistance and stable chemical properties, thereby improving the corrosion resistance and service life of the guide column.

[0011] As a further improvement of the technical scheme, the support column is fixedly provided with a baffle at one end away from the telescopic plate, and the baffle is slidingly arranged in the column groove.

[0012] By adopting the above scheme, the support column is supported and limited by the baffle.

[0013] As a further improvement of the technical scheme, the top block is inclined and inclined upward away from the fishing rod, and the top block is provided with a clamping portion for abutting against the inner wall of the oil pipe.

[0014] By adopting the above scheme, the telescopic plate is turned outward, and the multiple clamping portions abut against and clamp the inner wall of the oil pipe.

[0015] As a further improvement of the technical scheme, the baffle is fixedly provided with a support rod at the top, the fishing rod is provided with a through groove for sliding penetration of the support rod, and the support rod is fixedly provided with a pressing plate at the top end extending out of the fishing rod.

[0016] By adopting the above scheme, the multiple pressing plates are close to each other, the multiple pressing plates drive the multiple support rods to be close to each other, the multiple support rods drive the multiple support columns to be close to each other, and the multiple support columns drive the multiple telescopic plates to be close to each other, so that the multiple sets of clamping mechanisms are separated from the inner wall of the oil pipe, thereby facilitating the removal of the oil pipe.

[0017] As a further improvement of the technical scheme, the fishing rod is fixedly provided with a fixed column at the top, the fixed column is fixedly provided with a connecting plate at the top end, and the connecting plate is fixedly provided with multiple lifting rings at the top.

[0018] By adopting the above scheme, the multiple lifting rings are connected with the output end of the lifting machine, thereby improving the connection stability.

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] 1. The adjustable oil pipe fishing spear is provided with a clamping mechanism, the elastic force of the second spring drives the top block to overturn outward, and then the plurality of clamping portions abut against the inner wall of the oil pipe and clamp tightly, the plurality of clamping mechanisms clamp the oil pipe and lift the oil pipe out of the oil well by driving the fishing rod upward by the hoist, without driving the fishing rod to sink to a deep distance by the hoist, thereby reducing the construction difficulty of oil pipe fishing.

[0021] 2. The adjustable oil pipe fishing spear is provided with a telescopic plate, two supports support the telescopic plate, the telescopic plate is conveniently telescopic in the groove, when the telescopic plate is extruded to move, the elastic force of the first spring drives the telescopic plate to move outward, and then the clamping mechanism adapts to oil pipes with different diameters, thereby improving the practicability of the overall structure of the oil pipe fishing spear. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of the overall structure of the utility model;

[0023] Figure 2 It is a schematic view of the sectional structure of the fishing rod of the utility model;

[0024] Figure 3 It is a schematic view of the clamping mechanism of the utility model;

[0025] Figure 4 It is a schematic view of the top block of the utility model.

[0026] The meanings of the various reference numerals in the drawings are as follows:

[0027] 1, fishing rod; 2, clamping mechanism; 21, telescopic plate; 22, extrusion portion; 23, support; 24, first spring; 25, top block; 26, second spring; 27, baffle; 28, clamping portion; 29, support rod; 291, pressing plate; 3, guide column; 4, fixed column; 5, connecting plate; 6, lifting ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and so on the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and is not the device or element indicated or implied must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the restriction of the utility model.

[0030] Please refer to Figure 1 As shown in the utility model provides a adjustable oil pipe fishing spear, including fishing rod 1, fishing rod 1 bottom fixedly set up for inserting the guide column 3 of oil pipe, guide column 3 is inverted conical structure, oil pipe fishing process, make the output end of elevator drive fishing rod 1 into oil well and move downward, fishing rod 1 drive guide column 3 moves downward, the guide column 3 of inverted conical structure guides fishing rod 1 into oil pipe, avoid fishing rod 1 to be stuck in the top of oil pipe and be difficult to enter, guide column 3 surface is coated with anticorrosive coating, and anticorrosive coating is epoxy resin paint, and the anticorrosive coating is strong, chemical property is stable, and then improve the anticorrosive effect and service life of guide column 3, fishing rod 1 top fixedly set up fixed column 4, fixed column 4 top fixedly set up connecting plate 5, connecting plate 5 top fixedly set up multiple lifting rings 6, connect through multiple lifting rings 6 and the output end of elevator, improve the connection stability.

[0031] Please refer to Figures 2-4As shown, the fishing rod 1 is internally provided with multiple sets of clamping mechanisms 2, each of which includes an expansion plate 21. The fishing rod 1 is provided with multiple grooves on the surface, and the expansion plate 21 is arranged in the groove. One side of the expansion plate 21 extends out of the fishing rod 1 and is provided with a pressing part 22. The pressing part 22 is a pressing inclined surface, and is inclined from the lower end close to one side of the fishing rod 1 to the upper end away from one side of the fishing rod 1. The side wall away from the pressing part 22 of the expansion plate 21 is fixedly provided with a support 23. The inside of the fishing rod 1 is provided with a column groove matched with the support 23. The support 23 is provided with two supports 23, which support the expansion plate 21. The expansion plate 21 can move in and out of the groove conveniently. The outside of the support 23 is sleeved with a first spring 24. The two ends of the first spring 24 are fixedly connected with the expansion plate 21 and the inner wall of the groove respectively. When the expansion plate 21 is pressed to move, the elastic force of the first spring 24 drives the expansion plate 21 to move outward. The top of one side of the expansion plate 21 close to the pressing part 22 is provided with a mounting groove. The expansion plate 21 is hingedly provided with a top block 25 in the mounting groove. The side wall of the top block 25 is fixedly provided with a second spring 26. One end of the second spring 26 away from the side wall of the top block 25 is fixedly connected with the inner wall of the mounting groove. The second spring 26 is in a compressed state. The elastic force of the second spring 26 drives the top block 25 to turn outward. The top block 25 is inclined and inclined upward away from the fishing rod 1. The top end of the top block 25 is provided with a clamping part 28 for abutting against the inner wall of the oil pipe. When the fishing rod 1 moves downward, the multiple top blocks 25 are turned inward, and the multiple top blocks 25 compress the second spring 26 respectively. When the fishing rod 1 moves upward, the elastic force of the first spring 24 drives the expansion plate 21 to turn outward, so that the multiple clamping parts 28 abut against and clamp the inner wall of the oil pipe. Then the fishing rod 1 is moved upward by the lifting machine, so that the multiple sets of clamping mechanisms 2 clamp the oil pipe and take it out of the oil well. The end of the support 23 away from the expansion plate 21 is fixedly provided with a baffle 27. The baffle 27 is slidingly arranged in the column groove. The baffle 27 supports and limits the support 23. The top of the baffle 27 is fixedly provided with a support rod 29. The inside of the fishing rod 1 is provided with a through groove for the sliding penetration of the support rod 29. The top end of the support rod 29 extends out of the fishing rod 1 and is fixedly provided with a pressing plate 291. When the oil pipe is taken out, multiple pressing plates 291 are held and pressed simultaneously, so that the multiple pressing plates 291 are close to each other. The multiple pressing plates 291 drive the multiple support rods 29 to be close to each other. The multiple support rods 29 drive the multiple supports 23 to be close to each other. The multiple supports 23 drive the multiple expansion plates 21 to be close to each other, so that the multiple sets of clamping mechanisms 2 are separated from the inner wall of the oil pipe, thereby facilitating the removal of the oil pipe.

[0032] The specific working principle of the utility model is that the output end of the elevator drives the fishing rod 1 to enter the oil well and move downward, the fishing rod 1 drives the guide column 3 to move downward, the guide column 3 of the inverted cone structure guides the fishing rod 1 to enter the oil pipe, the fishing rod 1 drives the plurality of expansion plates 21 to extrude the oil pipe, and then drives the plurality of expansion plates 21 to contract inward, along with the plurality of jacks 25 being extruded by the inner wall of the oil pipe, the plurality of jacks 25 are driven to turn inward, the plurality of jacks 25 compress the second spring 26 respectively, and then the fishing rod 1 is driven to move upward by the elevator, when the fishing rod 1 moves upward, the jacks 25 are driven to turn outward by the elastic force of the second spring 26, and then the plurality of clamping parts 28 abut against the inner wall of the oil pipe and are clamped tightly, and then the fishing rod 1 is driven to move upward by the elevator, so that the plurality of clamping mechanisms 2 clamp the oil pipe and take out the oil pipe from the oil well.

[0033] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An adjustable tubing retrieval spear, comprising a retrieval rod (1), characterized in that: The retrieval rod (1) is internally provided with multiple sets of clamping mechanisms (2), each set of clamping mechanisms (2) including a telescopic plate (21). The surface of the retrieval rod (1) is provided with multiple grooves, and the telescopic plate (21) is disposed in the grooves. The retrieval rod (1) extends out from one side of the telescopic plate (21) and is provided with a pressing part (22). A support column (23) is fixedly disposed on the side wall of the telescopic plate (21) away from the pressing part (22). The retrieval rod (1) is internally provided with a support column (23) that is compatible with the support column (23). The column groove is provided with a first spring (24) on the outside of the support column (23). The two ends of the first spring (24) are fixed to the telescopic plate (21) and the inner wall of the groove, respectively. The top of the telescopic plate (21) near the extrusion part (22) is provided with an installation groove. The telescopic plate (21) is hinged to a top block (25) in the installation groove. The side wall of the top block (25) is fixed with a second spring (26). The end of the second spring (26) away from the side wall of the top block (25) is fixed to the inner wall of the installation groove.

2. The adjustable tubing spear according to claim 1, characterized in that: The bottom end of the salvage rod (1) is fixedly provided with a guide post (3) for inserting the oil pipe, and the guide post (3) has an inverted conical structure.

3. The adjustable tubing retrieval spear according to claim 2, characterized in that: The surface of the guide post (3) is coated with an anti-corrosion coating, which is an epoxy resin coating.

4. The adjustable tubing retrieval spear according to claim 1, characterized in that: A baffle (27) is fixedly installed at the end of the support column (23) away from the telescopic plate (21), and the baffle (27) is slidably installed in the column groove.

5. The adjustable tubing retrieval spear according to claim 1, characterized in that: The top block (25) is inclined and tilted upwards towards the side away from the retrieval rod (1), and the top of the top block (25) is provided with a snap-fit ​​part (28) for abutting against the inner wall of the oil pipe.

6. An adjustable tubing retrieval spear according to claim 4, characterized in that: A support rod (29) is fixedly installed on the top of the baffle (27). A through groove for the support rod (29) to slide through is provided inside the retrieval rod (1). The top of the support rod (29) extends out of the retrieval rod (1) and is fixedly installed with a pressure plate (291).

7. An adjustable tubing retrieval spear according to claim 1, characterized in that: The top of the retrieval rod (1) is fixedly provided with a fixing column (4), the top of the fixing column (4) is fixedly provided with a connecting plate (5), and the top of the connecting plate (5) is fixedly provided with multiple lifting rings (6).

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