Hydraulic overshot device for coiled tubing

Abstract

The utility model belongs to the technical field of fishing barrels, and particularly discloses a hydraulic fishing barrel device for coiled tubing, which comprises a first barrel body and a second barrel body, the top of the first barrel body is fixedly connected with a first mounting semi-ring, and the top of the second barrel body is fixedly connected with a second mounting semi-ring. According to the hydraulic overshot device for the continuous oil pipe, the side, close to the second mounting semi-ring, of the blocking frame is provided with an inclined face, so that the blocking frame can rotate in the process that the top cover drives the blocking frame to rotate; the second installation semi-ring can push the blocking frame to move through an inclined face arranged on the blocking frame and enable the spring to be compressed, after the position of the top cover is positioned, the blocking frame can block the top cover through the right-angle side of the blocking frame, and therefore the top cover is prevented from rotating reversely, and installation of the device is more stable and firmer.

Description

Technical Field

[0001] The utility model relates to the technical field of overshot tubes, in particular to a hydraulic overshot tube device for a continuous oil pipe. Background Art

[0002] In recent years, accidents of tools and instruments getting stuck in the drill bit or falling into the well often occur during the construction of pumping perforating, testing, and wireline operations in oil and gas fields. When conventional salvage cannot solve the wellbore accident, continuous tubing is often used to salvage the fallen objects.

[0003] After consulting the literature, it is learned that the existing published patent: CN214576855U, discloses a high-precision downhole drill tool salvage device, including a support plate, on which a salvage mechanism is connected; the salvage mechanism includes a hydraulic pump, which is connected to the upper end of the support plate, and the lower end of the support plate is fixedly connected to a support pipe, and a hydraulic cylinder is connected to the center of the lower end of the support plate located in the support pipe. It has accurate positioning, short docking time and high joining strength, and can successfully pull the broken drill pipe out of the well.

[0004] However, the device in the comparative scheme will also have the following problems: although the device in the comparative scheme can pull out the drill rod, since the device in the comparative scheme is an integrated device, when the internal structure of the device fails, it is not easy for the staff to disassemble the cylinder, which makes it more troublesome to disassemble and repair the internal structure of the cylinder after a failure occurs, which is easy to cause the project progress to be delayed to a certain extent. In view of the above situation, technical innovation is carried out on the basis of the existing device. Utility Model Content

[0005] The utility model aims to provide a hydraulic overshot device for a coiled tubing to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic salvage barrel device for a continuous oil pipe, comprising a first barrel and a second barrel, a first mounting half ring fixedly connected to the top of the first barrel, a second mounting half ring fixedly connected to the top of the second barrel, outer surfaces of the first mounting half ring and the second mounting half ring are both provided with threads, top covers are threadedly connected to the outer surfaces of the first mounting half ring and the second mounting half ring, the top covers are threadedly mounted on the first mounting half ring and the second mounting half ring, a power groove extending to the outside of the top cover is opened inside the top cover, the cross-section of the power groove is cross-shaped, a transmission maintenance device is arranged inside the power groove, and a groove is formed between the first mounting half ring and the second mounting half ring.

[0007] Preferably, two symmetrical positioning rods are fixedly connected to one side of the first cylinder close to the second cylinder, and two symmetrical positioning grooves are provided on one side of the second cylinder close to the first cylinder. The surfaces of the positioning rods are slidably connected to the inside of the positioning grooves, and the cross-sections of the positioning grooves and the positioning rods are both isosceles trapezoids.

[0008] Preferably, the transmission maintenance device includes a transmission frame, the surface of the transmission frame is slidably connected to the inside of the power slot, the cross-section of the transmission frame is also cross-shaped, the bottom of the transmission frame is fixedly connected to a baffle frame, the cross-section of the baffle frame is L-shaped, and a slope is provided on one side of the baffle frame close to the second mounting semi-ring, a transmission slot connected to the inside of the power slot is opened inside the top cover, and a gear is rotatably connected to the inside of the transmission slot.

[0009] Preferably, a spring is fixedly connected to one side of the transmission frame, and an end of the spring away from the transmission frame is fixedly connected to the inner wall of the power slot. The transmission frame is provided with teeth on the side close to the gear, and the transmission frame is meshed with the surface of the gear through the teeth.

[0010] Preferably, a rotation groove is opened on the top of the top cover, and a handle is rotatably connected to the rotation groove. The bottom end of the handle rotates through the inside of the rotation groove and extends to the inside of the transmission groove, and the bottom end of the handle is fixedly connected to the top of the gear.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The hydraulic salvage tube device for the continuous oil pipe is provided with an inclined surface on one side of the retaining frame close to the second mounting half ring, so that when the top cover drives the retaining frame to rotate, the second mounting half ring can push the retaining frame to move through the inclined surface provided on the retaining frame and compress the spring. When the position of the top cover is positioned, the retaining frame can block the top cover through the right-angle side of the retaining frame, thereby preventing the top cover from turning upside down and making the installation of the device more stable and firm. At the same time, after the retaining frame slides out of the groove formed between the first mounting half ring and the second mounting half ring, the staff can twist the top cover, thereby making the top cover detached from the first mounting half ring and the second mounting half ring, and making it easier for the staff to disassemble the first cylinder body and the second cylinder body, so that when the internal structure of the device is damaged, the staff can more conveniently disassemble and repair the device, making the later maintenance of the device more convenient.

[0013] 2. The hydraulic overshot device for the coiled tubing has a positioning groove and a positioning rod with cross-sections that are both isosceles trapezoidal, thereby making the positioning and installation of the first cylinder and the second cylinder more convenient, and at the same time limiting the installation positions of the first cylinder and the second cylinder, so that the first cylinder and the second cylinder can be installed more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a structural schematic diagram of a hydraulic overshot device for a coiled tubing according to the utility model;

[0015] Figure 2 It is a structural schematic diagram of the second cylinder of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the first cylinder of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the top cover of the utility model;

[0018] Figure 5 It is a schematic cross-sectional structural diagram of the top cover of the utility model.

[0019] In the figure: 1. first cylinder; 2. second cylinder; 3. top cover; 4. rotating groove; 5. positioning groove; 6. positioning rod; 7. first mounting half ring; 8. second mounting half ring; 9. power groove; 10. spring; 11. transmission frame; 12. gear; 13. handle; 14. transmission groove; 15. retaining frame. DETAILED DESCRIPTION

[0020] See also Figure 1-5 The utility model provides a technical solution: a hydraulic salvage tube device for a continuous oil pipe, comprising a first cylinder 1 and a second cylinder 2, a first mounting semi-ring 7 being fixedly connected to the top of the first cylinder 1, a second mounting semi-ring 8 being fixedly connected to the top of the second cylinder 2, outer surfaces of the first mounting semi-ring 7 and the second mounting semi-ring 8 are both provided with threads, top covers 3 are threadedly connected to the outer surfaces of the first mounting semi-ring 7 and the second mounting semi-ring 8, the top covers 3 are threadedly installed on the first mounting semi-ring 7 and the second mounting semi-ring 8, a hydraulic salvage device is arranged inside the first cylinder 1 and the second cylinder 2, the hydraulic salvage device is an existing structure, and no further elaboration is made here, the drill pipe can be salvaged by the device, a power groove 9 extending to the outside of the top cover 3 is opened inside the top cover 3, the cross-section of the power groove 9 is cross-shaped, a transmission maintenance device is arranged inside the power groove 9, a groove is formed between the first mounting semi-ring 7 and the second mounting semi-ring 8.

[0021] Furthermore, two symmetrical positioning rods 6 are fixedly connected to one side of the first cylinder 1 close to the second cylinder 2, and two symmetrical positioning grooves 5 are provided on one side of the second cylinder 2 close to the first cylinder 1. The surface of the positioning rod 6 is slidably connected to the inside of the positioning groove 5, and the cross-sections of the positioning groove 5 and the positioning rod 6 are both isosceles trapezoids. Since the cross-sections of the positioning groove 5 and the positioning rod 6 are both isosceles trapezoids, the positioning and installation of the first cylinder 1 and the second cylinder 2 are more convenient, and at the same time, the installation positions of the first cylinder 1 and the second cylinder 2 are restricted, so that the first cylinder 1 and the second cylinder 2 can be installed more stably.

[0022] The transmission maintenance device includes a transmission frame 11, the surface of which is slidably connected to the inside of the power groove 9, the cross-section of the transmission frame 11 is also cross-shaped, and a retaining frame 15 is fixedly connected to the bottom of the transmission frame 11. The cross-section of the retaining frame 15 is L-shaped, and a slope is provided on the side of the retaining frame 15 close to the second mounting semi-ring 8. A transmission groove 14 connected to the inside of the power groove 9 is opened inside the top cover 3, and a gear 12 is rotatably connected to the inside of the transmission groove 14.

[0023] Furthermore, a spring 10 is fixedly connected to one side of the transmission frame 11 , and one end of the spring 10 away from the transmission frame 11 is fixedly connected to the inner wall of the power slot 9 , so that the spring 10 can be compressed and reset by the movement of the transmission frame 11 .

[0024] Furthermore, teeth are provided on one side of the transmission frame 11 close to the gear 12 , and the transmission frame 11 is meshedly connected with the surface of the gear 12 via the teeth.

[0025] After the staff makes the positioning rod 6 slide into the interior of the positioning groove 5, the top cover 3 is rotated on the first mounting half ring 7 and the second mounting half ring 8. The threads arranged on the outer surfaces of the first mounting half ring 7 and the second mounting half ring 8 make the top cover 3 fixed on the first mounting half ring 7 and the second mounting half ring 8. At the same time, an inclined surface is arranged on the side of the retaining frame 15 close to the second mounting half ring 8. When the top cover 3 drives the retaining frame 15 to rotate, the second mounting half ring 8 can push the retaining frame 15 to move through the inclined surface arranged on the retaining frame 15 and compress the spring 10. When the position of the top cover 3 is positioned, the retaining frame 15 can block the top cover 3 through the right-angled side of the retaining frame 15, thereby preventing the top cover 3 from turning over and making the installation of the device more stable and firm.

[0026] Furthermore, a rotating groove 4 is opened at the top of the top cover 3, and the rotating groove 4 is rotatably connected to a handle 13. The bottom end of the handle 13 rotates through the inside of the rotating groove 4 and extends to the inside of the transmission groove 14. The bottom end of the handle 13 is fixedly connected to the top of the gear 12.

[0027] When the device needs to be disassembled for maintenance, the staff drives the handle 13 to rotate the gear 12 to make the retaining frame 15 slide out of the groove formed between the first mounting half ring 7 and the second mounting half ring 8, and then the staff twists the top cover 3, so that the top cover 3 can be separated from the first mounting half ring 7 and the second mounting half ring 8, and the staff can more conveniently disassemble the first cylinder 1 and the second cylinder 2, so that the staff can more conveniently disassemble and repair the device when the internal structure of the device is damaged, making the subsequent maintenance of the device more convenient.

[0028] Working principle: For this type of hydraulic overshot device for continuous tubing, the staff first slides the positioning rod 6 into the positioning groove 5, and then rotates the top cover 3 on the first mounting half ring 7 and the second mounting half ring 8. The threads arranged on the outer surfaces of the first mounting half ring 7 and the second mounting half ring 8 allow the top cover 3 to be fixed on the first mounting half ring 7 and the second mounting half ring 8. At the same time, an inclined surface is arranged on one side of the retaining frame 15 close to the second mounting half ring 8, so that when the top cover 3 drives the retaining frame 15 to rotate, the second mounting half ring 8 can push the retaining frame 15 to move through the inclined surface arranged on the retaining frame 15, and the spring 10 is compressed. When the position of the top cover 3 is positioned, the right-angled side of the retaining frame 15 can block the top cover 3, thereby preventing the top cover 3 from turning over and making the installation of the device more stable and firm. When the device needs to be disassembled for maintenance, the staff drives the handle 13 to rotate the gear 12 to make the retaining frame 15 slide out of the groove formed between the first mounting half ring 7 and the second mounting half ring 8, and then the staff twists the top cover 3, so that the top cover 3 can be separated from the first mounting half ring 7 and the second mounting half ring 8, and the staff can more conveniently disassemble the first cylinder 1 and the second cylinder 2.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic overshot device for coiled tubing, comprising a first cylinder (1) and a second cylinder (2), characterized in that: The top of the first cylinder (1) is fixedly connected with a first mounting half ring (7), and the top of the second cylinder (2) is fixedly connected with a second mounting half ring (8). The outer surfaces of the first mounting half ring (7) and the second mounting half ring (8) are both provided with threads. The outer surfaces of the first mounting half ring (7) and the second mounting half ring (8) are threadedly connected with a top cover (3). The top cover (3) is threadedly mounted on the first mounting half ring (7) and the second mounting half ring (8). A power groove (9) extending to the outside of the top cover (3) is provided inside the top cover (3). The cross section of the power groove (9) is cross-shaped. A transmission maintenance device is provided inside the power groove (9). A groove is formed between the first mounting half ring (7) and the second mounting half ring (8).

2. A hydraulic overshot device for coiled tubing according to claim 1, characterized in that: Two symmetrical positioning rods (6) are fixedly connected to one side of the first cylinder (1) close to the second cylinder (2), and two symmetrical positioning grooves (5) are provided on one side of the second cylinder (2) close to the first cylinder (1). The surfaces of the positioning rods (6) are slidably connected to the inside of the positioning grooves (5), and the cross-sections of the positioning grooves (5) and the positioning rods (6) are both isosceles trapezoids.

3. A hydraulic overshot device for coiled tubing according to claim 1, characterized in that: The transmission maintenance device comprises a transmission frame (11), the surface of the transmission frame (11) is slidably connected to the inside of the power groove (9), the cross section of the transmission frame (11) is also cross-shaped, a retaining frame (15) is fixedly connected to the bottom of the transmission frame (11), the cross section of the retaining frame (15) is L-shaped, and a slope is arranged on one side of the retaining frame (15) close to the second mounting semi-ring (8), and a transmission groove (14) communicating with the inside of the power groove (9) is opened inside the top cover (3), and a gear (12) is rotatably connected inside the transmission groove (14).

4. A hydraulic overshot device for coiled tubing according to claim 3, characterized in that: A spring (10) is fixedly connected to one side of the transmission frame (11), and one end of the spring (10) away from the transmission frame (11) is fixedly connected to the inner wall of the power slot (9).

5. The hydraulic overshot device for coiled tubing according to claim 3, characterized in that: The transmission frame (11) is provided with teeth on one side close to the gear (12), and the transmission frame (11) is meshedly connected with the surface of the gear (12) via the teeth.

6. A hydraulic overshot device for coiled tubing according to claim 5, characterized in that: The top of the top cover (3) is provided with a rotation groove (4), the rotation groove (4) is connected to a handle (13), the bottom end of the handle (13) rotates through the inside of the rotation groove (4) and extends to the inside of the transmission groove (14), and the bottom end of the handle (13) is fixedly connected to the top of the gear (12).

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