Coiled tubing fishing device

Abstract

The utility model discloses a coiled tubing salvage device which comprises a salvage cylinder, a clamping mechanism assembled in the salvage cylinder and a guide mechanism assembled at the bottom of the salvage cylinder, the clamping mechanism comprises two sliding seats which are fixedly installed on the inner wall of the salvage cylinder and are symmetrically distributed, clamping arms are installed on the inner sides of the two sliding seats in a sliding mode, and the clamping arms are connected with the guide mechanism. A limiting mechanism is assembled in the fishing cylinder and located on the top of the clamping mechanism, and the guide mechanism comprises a guide cylinder fixedly installed at the bottom of the fishing cylinder. According to the continuous oil pipe fishing device, when the continuous oil pipe is fished, the continuous oil pipe extends into the guide mechanism to push the overturning frame to overturn, the cleaning belt can slide on the surface of the continuous oil pipe, and impurities such as oil stains on the surfaces of the two sides of the continuous oil pipe can be scraped away; the friction force between the clamping mechanism and the coiled tubing can be increased, and the situation of slipping during fishing is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipe salvaging, in particular to a continuous oil pipe salvaging device. Background Art

[0002] Continuous tubing plays a vital role in the oil and gas industry. It is mainly used for oil well pumping and other operations. During the development and operation of oil and gas wells, due to various reasons, such as operational errors, equipment failures, etc., downhole tools such as continuous tubing may fall into the well, seriously affecting the normal operation of the well, and the continuous tubing needs to be salvaged.

[0003] However, conventional salvage operations usually involve extending a slip overshot tube into the oil well to clamp and salvage the coiled tubing. Since the surface of the coiled tubing in the oil well is adhered to a large amount of impurities such as oil stains, the surface of the coiled tubing is slippery. When the conventional slip overshot tube is used to clamp the tubing, it is easy to slip, causing more troubles to the salvage operation. Therefore, the present applicant proposes a coiled tubing salvage device to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a coiled tubing fishing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coiled tubing salvage device, comprising a salvage tube and a clamping mechanism installed inside the salvage tube, and a guide mechanism installed at the bottom of the salvage tube;

[0006] The clamping mechanism comprises two slides fixedly mounted on the inner wall of the overshot tube and symmetrically distributed, the inner sides of the two slides are slidably mounted with clamping arms, and a limiting mechanism is mounted inside the overshot tube and at the top of the clamping mechanism;

[0007] The guide mechanism includes a guide cylinder fixedly installed at the bottom of the salvage tube, a guide opening is opened at the bottom of the guide cylinder, two symmetrically distributed turning frames are rotatably installed on both sides of the inner wall of the guide cylinder, a cleaning belt is fixedly connected to the inner side of the turning frame, and a limit block is fixedly installed on the top of the turning frame.

[0008] Preferably, the sliding seat and the clamping arm are slidably mounted via a slider, and a sliding groove for the slider to slide is provided on the surface of the sliding seat.

[0009] Preferably, a lifting lug is fixedly mounted on the top of the overshot tube, and anti-slip strips arranged at equal distances are fixedly mounted on the inner wall of the clamping arm.

[0010] Preferably, the limiting mechanism comprises a fixing frame fixedly installed inside the overshot tube, and a movable column is installed through the fixing frame.

[0011] Preferably, a pressure plate is fixedly mounted on the bottom of the movable column, and a thrust spring is sleeved on the outer side of the movable column and between the pressure plate and the fixed frame.

[0012] Preferably, movable grooves for the turning frame to turn over are provided on both sides of the inner wall of the guide cylinder, and a return spring is fixedly installed between the limit block and the movable groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The coiled tubing salvage device is provided with a guide mechanism. When the coiled tubing is salvaged, the coiled tubing is extended into the guide mechanism, so that the coiled tubing can squeeze the limit block, push the flip frame to flip, and clamp the cleaning belt on both sides of the coiled tubing. The cleaning belt continues to extend into the salvage tube through the coiled tubing, so that the cleaning belt can slide on the surface of the coiled tubing, and impurities such as oil stains on the surfaces of both sides of the coiled tubing can be scraped off, and the clamping mechanism can clamp the cleaned position on the coiled tubing, so as to increase the friction between the clamping mechanism and the coiled tubing, effectively reduce the slippage during salvage, and improve the salvage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the overshot tube of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the guide mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the clamping mechanism of the utility model;

[0020] Figure 5 This is a schematic diagram of the clamping arm structure of the utility model;

[0021] Figure 6 It is a schematic diagram of the structure of the limiting mechanism of the utility model.

[0022] In the figure: 1. salvage tube; 101. lifting ear; 2. guide mechanism; 201. guide tube; 202. movable groove; 203. turning frame; 204. guide port; 205. cleaning belt; 206. limit block; 207. reset spring; 3. limit mechanism; 301. fixed frame; 302. movable column; 303. pressure plate; 304. thrust spring; 4. clamping mechanism; 401. slide seat; 402. slide block; 403. clamping arm; 404. slide groove; 405. anti-slip strip. DETAILED DESCRIPTION

[0023] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.

[0024] See also Figure 1-6 As shown, a coiled tubing salvage device proposed by the utility model comprises a salvage tube 1 and a clamping mechanism 4 mounted inside the salvage tube 1, and a guiding mechanism 2 mounted at the bottom of the salvage tube 1, wherein the clamping mechanism 4 comprises two slides 401 fixedly mounted on the inner wall of the salvage tube 1 and symmetrically distributed, and clamping arms 403 are slidably mounted on the inner sides of the two slides 401, and a limiting mechanism 3 is mounted inside the salvage tube 1 and at the top of the clamping mechanism 4, and the guiding mechanism 2 comprises a guide tube 201 fixedly mounted on the bottom of the salvage tube 1, and a guiding opening 204 is provided at the bottom of the guide tube 201, and two symmetrically distributed turning frames 203 are rotatably mounted on both sides of the inner wall of the guide tube 201, a cleaning belt 205 is fixedly connected to the inner side of the turning frame 203, and a limiting block 206 is fixedly mounted on the top of the turning frame 203.

[0025] Based on the above-mentioned structural setting, the coiled tubing salvage device is composed of a salvage tube 1, a guide mechanism 2, a limit mechanism 3 and a clamping mechanism 4, wherein, by introducing the salvage tube 1 into the oil well, the guide mechanism 2 can extend the coiled tubing in the oil well into the clamping mechanism 4, and when the coiled tubing passes through the guide mechanism 2, the grease and impurities on the surfaces of both sides of the coiled tubing can be scraped off, and the limit mechanism 3 can limit the clamping mechanism 4, so that the clamping mechanism 4 can clamp the coiled tubing in the lifting salvage tube 1, so as to facilitate the salvage of the coiled tubing. Specifically, during the working In the project, the overshot tube 1 is connected to the lifting equipment and placed into the oil well. When the overshot tube 1 falls, the guide port 204 can extend the continuous oil pipe into the guide mechanism 2, so that the continuous oil pipe can touch the limit block 206, and the limit block 206 can be squeezed to drive the flip frame 203 to flip. The flipping of the flip frame 203 can make the cleaning belt 205 fit on both sides of the surface of the continuous oil pipe. The overshot tube 1 continues to move downward, so that the cleaning belt 205 can slide on the surface of the continuous oil pipe, which can facilitate the removal of grease on the surface of both sides of the continuous oil pipe. The scraping of impurities, when the overshot tube 1 continues to move downward, the continuous oil pipe can be abutted against the bottom of the clamping arm 403, and when the continuous oil pipe extends into the overshot tube 1, the clamping arm 403 can be pushed to move upward, and the clamping arm 403 slides upward along the slide 401, so that the two clamping arms 403 can be moved away from each other. When the two clamping arms 403 are separated to a certain distance, the continuous oil pipe can be extended between the clamping arms 403, and the continuous oil pipe can be abutted against the bottom of the limiting mechanism 3, and when the overshot tube 1 is lifted upward, the limiting mechanism 3 can generate a thrust on the clamping arm 403. , so that the clamping arm 403 and the coiled tubing can be kept in the original position, and the slide 401 is driven to move upward synchronously by the overshot tube 1, so that the clamping arm 403 can slide to the bottom of the slide 401, so that the clamping arm 403 can form a closing effect, which can facilitate the clamping and fixing of the coiled tubing, so that the clamping arm 403 can be clamped at the position where the surfaces of both sides of the coiled tubing are cleaned, and the friction between the clamping arm 403 and the coiled tubing can be improved. When the overshot tube 1 continues to be lifted upward, it can synchronously drive the coiled tubing to be lifted, which is convenient for the salvage operation of the coiled tubing and prevents the coiled tubing from slipping.

[0026] Furthermore, the slide seat 401 and the clamping arm 403 are slidably mounted via a slider 402, and a slide groove 404 is provided on the surface of the slide seat 401 for the slider 402 to slide. The slider 402 can slide along the slide groove 404, so that the clamping arm 403 can slide up and down in an inclined manner, and the clamping arm 403 can form a separation and closing effect when moving up and down by utilizing the inclined angle.

[0027] Furthermore, a lifting lug 101 is fixedly installed on the top of the overshot tube 1, and anti-slip strips 405 arranged equidistantly are fixedly installed on the inner wall of the clamping arm 403. The lifting lug 101 can be conveniently connected to the lifting equipment, and the anti-slip strips 405 can enhance the friction between the clamping arm 403 and the coiled tubing to avoid slipping when the coiled tubing is salvaged.

[0028] Furthermore, the limiting mechanism 3 includes a fixing frame 301 fixedly installed inside the overshot tube 1, and a movable column 302 is installed through the fixing frame 301. The movable column 302 can be limited by the fixing frame 301, so that the movable column 302 can slide up and down on the fixing frame 301.

[0029] Furthermore, a pressure plate 303 is fixedly installed at the bottom of the movable column 302, and a thrust spring 304 is sleeved on the outer side of the movable column 302 and between the pressure plate 303 and the fixed frame 301. The thrust spring 304 allows the pressure plate 303 to fit on the top of the clamping arm 403 and move up and down synchronously with the clamping arm 403. When the overshot tube 1 moves upward, the pressure plate 303 can press the clamping arm 403 to move downward along the slide 401, so that the clamping arm 403 can perform a closing movement.

[0030] Furthermore, both sides of the inner wall of the guide cylinder 201 are provided with movable grooves 202 for the turning frame 203 to turn over, and a return spring 207 is fixedly installed between the limit block 206 and the movable groove 202. The movable groove 202 enables the turning frame 203 to turn over, and when the coiled tubing is taken out from the guide mechanism 2, the return spring 207 can push the limit block 206 to close, so that the turning frame 203 can turn over and reset, so that the turning frame 203 can drive the cleaning belt 205 to clean the oil stains and other impurities on the surface of the coiled tubing when the coiled tubing is salvaged next time.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coiled tubing salvage device, characterized in that: It comprises an overshot (1), a clamping mechanism (4) mounted inside the overshot (1), and a guiding mechanism (2) mounted at the bottom of the overshot (1); The clamping mechanism (4) comprises two slide seats (401) fixedly mounted on the inner wall of the overshot tube (1) and symmetrically distributed, and a clamping arm (403) is slidably mounted on the inner side of the two slide seats (401). A limiting mechanism (3) is mounted inside the overshot tube (1) and at the top of the clamping mechanism (4); The guide mechanism (2) comprises a guide tube (201) fixedly mounted on the bottom of the salvage tube (1); a guide opening (204) is provided at the bottom of the guide tube (201); two symmetrically distributed turning frames (203) are rotatably mounted on both sides of the inner wall of the guide tube (201); a cleaning belt (205) is fixedly connected to the inner side of the turning frame (203); and a limit block (206) is fixedly mounted on the top of the turning frame (203).

2. A coiled tubing salvage device according to claim 1, characterized in that: The sliding seat (401) and the clamping arm (403) are slidably mounted via a slider (402), and a sliding groove (404) for the slider (402) to slide is provided on the surface of the sliding seat (401).

3. A coiled tubing salvage device according to claim 1, characterized in that: A lifting lug (101) is fixedly mounted on the top of the overshot tube (1), and anti-slip strips (405) arranged in an equidistant manner are fixedly mounted on the inner wall of the clamping arm (403).

4. A coiled tubing salvage device according to claim 1, characterized in that: The limiting mechanism (3) comprises a fixing frame (301) fixedly mounted inside the overshot tube (1), and a movable column (302) is installed through the fixing frame (301).

5. A coiled tubing salvage device according to claim 4, characterized in that: A pressure plate (303) is fixedly mounted on the bottom of the movable column (302), and a thrust spring (304) is sleeved on the outside of the movable column (302) and between the pressure plate (303) and the fixed frame (301).

6. A coiled tubing salvage device according to claim 1, characterized in that: Both sides of the inner wall of the guide cylinder (201) are provided with movable grooves (202) for the turning frame (203) to turn over, and a return spring (207) is fixedly installed between the limit block (206) and the movable groove (202).

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