Positioning and butting device for casing pipe of sealing well

Abstract

The utility model discloses a sealing well casing pipe positioning butt joint device, which relates to the technical field of oil and gas engineering, and comprises a chassis, one side of the chassis is connected with a rotatable rotating disc, one side of the rotating disc is fixedly provided with an inner sleeve, and the outer wall of the inner sleeve is sleeved with an outer sleeve. A first motor is fixedly installed at one end of the outer sleeve, one side of the first motor is in transmission connection with a threaded rod, the threaded rod is in threaded connection with the interior of the inner sleeve, a connecting rod is hinged to the outer wall of the outer sleeve, and a retention plate is hinged to the end, away from the outer sleeve, of the connecting rod; according to the utility model, the rotating wheel is matched with the reset spring to realize flexible positioning, even if a small deviation exists in a wellhead, the position of the sleeve can be automatically adjusted through the sliding of the rotating wheel and the elastic compensation of the spring, so that the adaptability to the wellhead is improved, the existence of positioning deviation is reduced, and the accuracy of butt joint positioning is improved.

Description

A sealing well casing positioning and docking device Technical Field

[0001] This utility model relates to the field of oil and gas engineering technology, specifically to a well casing positioning and docking device. Background Technology

[0002] In oil and gas extraction, geological exploration, and underground engineering, the construction and maintenance of storage wells are crucial. As a key component of storage wells, the accuracy of casing installation directly affects the structural stability, sealing performance, and subsequent usability of the well. With oil and gas resource development progressing to deeper and more complex formations, the scale and difficulty of storage well construction are constantly increasing, placing higher demands on casing positioning and installation technology.

[0003] Currently, there are many problems in the installation of casing for sealed wells. Among them, the casing is heavy and long, making it difficult to accurately control its position and attitude during installation. This can easily lead to casing displacement and tilting, affecting the fit and sealing between the casing and the well wall.

[0004] Existing casing positioning methods mostly rely on manual operation and simple measuring tools, resulting in low positioning accuracy. This makes it difficult to meet the precision requirements of casing positioning in sealed wells. Casing installation methods also require significant manpower and time, and the process is cumbersome and inefficient. For example, during casing docking, the position and orientation of the casing need to be manually adjusted before welding or threaded connection, which is difficult and prone to installation quality problems.

[0005] In view of this, a well casing positioning and docking device is provided to overcome the above-mentioned defects. Summary of the Invention

[0006] The purpose of this invention is to provide a well casing positioning and docking device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides a well casing positioning and docking device, including a chassis, a rotatable rotating disk connected to one side of the chassis, an inner sleeve fixedly installed on one side of the rotating disk, an outer sleeve fitted on the outer wall of the inner sleeve, a first motor fixedly installed at one end of the outer sleeve, a threaded rod drivenly connected to one side of the first motor, the threaded rod being threadedly connected to the inside of the inner sleeve, a connecting rod hinged to the outer wall of the outer sleeve, a fixing plate hinged to the end of the connecting rod away from the outer sleeve, a docking block fixedly installed on the inner wall of the fixing plate, a moving groove formed on the inner wall of the docking block, a movable moving block disposed inside the moving groove, a return spring fixedly connected between the movable block and the inner wall of the moving groove, a rotatable rotating wheel installed at the top of the movable block, and a driving block fixedly installed on the side wall of the movable block.

[0008] Furthermore, one end of the retaining plate is tightly attached to the front side of the outer wall of the rotating disk in the initial state.

[0009] Furthermore, the specific number of the retaining plates is four, and the four retaining plates are distributed in a circumferential array on the outside of the outer sleeve. Each retaining plate is provided with two connecting rods between itself and the outer sleeve.

[0010] Furthermore, the outer wall of the drive block near the retaining plate is inclined, and the edge of the rotating wheel is located outside the drive block.

[0011] Furthermore, four limiting round rods are fixedly installed on the side wall of the rotating disk, and the outer sleeve can slide on the outer wall of the four limiting round rods while being sleeved on the outer wall of the inner sleeve.

[0012] Furthermore, a second motor is fixedly installed on the rear side of the chassis, and one end of the second motor is connected to a drive gear.

[0013] Furthermore, a driven gear ring is fixedly installed on the outer wall of the rotating disk, and the driven gear ring meshes with the drive gear.

[0014] Furthermore, the retaining plate is specifically arc-shaped.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] By using a rotating wheel in conjunction with a return spring, "flexible positioning" is achieved. Even if there is a slight deviation at the wellhead, the casing position can be automatically adjusted through the sliding of the rotating wheel and the elastic compensation of the spring, which improves the adaptability to the wellhead, reduces the existence of positioning deviation, and improves the accuracy of docking positioning. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of this utility model;

[0019] Figure 3 is a schematic diagram of the front structure of this utility model;

[0020] Figure 4 is a schematic diagram of the internal structure of the docking block of this utility model.

[0021] In the diagram: 1. Chassis; 2. Rotating disk; 3. Fixing plate; 4. Outer sleeve; 5. Connecting rod; 6. Limiting round rod; 7. Inner sleeve; 8. First motor; 9. Connecting block; 10. Return spring; 11. Moving block; 12. Rotating wheel; 13. Drive block; 14. Drive gear; 15. Driven gear ring; 16. Second motor; 17. Threaded rod; 18. Moving groove; 19. Guide rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Referring to Figures 1-4, a well casing positioning and docking device includes a chassis 1. A rotatable rotating disk 2 is connected to one side of the chassis 1. An inner sleeve 7 is fixedly installed on one side of the rotating disk 2. An outer sleeve 4 is fitted on the outer wall of the inner sleeve 7. A first motor 8 is fixedly installed at one end of the outer sleeve 4. A threaded rod 17 is drivenly connected to one side of the first motor 8. The threaded rod 17 is threadedly connected to the inside of the inner sleeve 7. A connecting rod 5 is hinged to the outer wall of the outer sleeve 4. A fixing plate 3 is hinged to the end of the connecting rod 5 away from the outer sleeve 4. A docking block 9 is fixedly installed on the inner wall of the fixing plate 3. A moving groove 18 is opened on the inner wall of the docking block 9. A movable moving block 11 is arranged inside the moving groove 18. A return spring 10 is fixedly connected between the moving block 11 and the inner wall of the moving groove 18. A rotatable rotating wheel 12 is installed at the top of the moving block 11. A drive block 13 is fixedly installed on the side wall of the moving block 11.

[0025] Furthermore, there are four retaining plates 3, which are arranged in a circular array on the outside of the outer sleeve 4. Each retaining plate 3 is connected to the outer sleeve 4 by two connecting rods 5.

[0026] By setting four retaining plates 3 and two connecting rods 5 between each retaining plate 3 and the outer sleeve 4, the retaining plates 3 can be driven to move outward during the movement of the outer sleeve 4 by the connecting rods 5 respectively hinged to the outer wall of the outer sleeve 4 and the bottom of the retaining plates 3. Thus, the multiple retaining plates 3 can cooperate with each other to fix the sleeve.

[0027] It should be noted that one end of the retaining plate 3 is tightly attached to the front side of the outer wall of the rotating disk 2 in the initial state. By setting one end of the retaining plate 3 to be tightly attached to the front side of the outer wall of the rotating disk 2 in the initial state, the retaining plate 3 can move outward smoothly after being resisted by the connecting rod 5, instead of being driven by the connecting rod 5 to move in the direction of the rotating disk 2.

[0028] Furthermore, four limiting rods 6 are fixedly installed on the side wall of the rotating disk 2. The outer sleeve 4 can slide on the outer wall of the inner sleeve 7 while being fitted onto the outer wall of the four limiting rods 6. By setting the outer sleeve 4 to slide on the outer wall of the inner sleeve 7 while being fitted onto the outer wall of the four limiting rods 6, the outer sleeve 4 cannot rotate around the inner sleeve 7 after the first motor 8 is started. Instead, it can only rotate by driving the threaded rod 17 to move the outer sleeve 4 closer to or away from the inner sleeve 7.

[0029] In addition, the outer wall of the drive block 13 near the retaining plate 3 is inclined, and the edge of the rotating wheel 12 is located outside the drive block 13.

[0030] By setting the outer wall of the drive block 13 near the fixed plate 3 to be inclined, when the drive block 13 contacts the wellhead, the inclined surface of the drive block 13 can abut against the wellhead of the well. At the same time, during the continuous downward pressure, the drive block 13 will drive the moving block 11 and the rotating wheel 12 to move in the moving groove 18. Under the elastic force of the return spring 10, the rotating wheel 12 can always be in contact with the outer wall, so that the rotating wheel 12 can directly contact the inner wall of the wellhead of the well, preventing the deviation from occurring during the subsequent casing descent.

[0031] It should be noted that a guide rod 19 is fixedly installed on the inner wall of the moving groove 18, and the moving block 11 is slidably sleeved on the outer wall of the guide rod 19. The presence of the guide rod 19 ensures that the moving block 11 is guided during movement and will not easily detach from the moving groove 18.

[0032] In addition, a second motor 16 is fixedly installed on the rear side of the chassis 1. One end of the second motor 16 is connected to a drive gear 14. A driven gear ring 15 is fixedly installed on the outer wall of the rotating disk 2. The driven gear ring 15 meshes with the drive gear 14. The specific shape of the fixed plate 3 is arc-shaped.

[0033] By setting the driven gear ring 15 and the drive gear 14 to mesh with each other, the user can start the drive gear 14 through the second motor 16 to drive the driven gear ring 15 and the rotating disk 2 to rotate. The fixed plate 3 is specifically arc-shaped so that the fixed plate 3 can be more stable when performing internal support work on the sleeve.

[0034] Working principle: The chassis 1 is placed in a suitable position. In the initial state of the device, one end of each of the four arc-shaped retaining plates 3 is attached to the front side of the outer wall of the rotating disk 2, forming a narrow initial space. After inserting the lower end of the sleeve between the four retaining plates 3, the first motor 8 is started to drive the threaded rod 17 to rotate. Since the threaded rod 17 is threadedly connected to the inner sleeve 7, and the outer sleeve 4 is restricted from rotating by the retaining rod 6, the outer sleeve 4 moves outward along the axial direction of the inner sleeve 7. At this time, the outer sleeve 4 pushes the retaining plates 3 outward around the hinge point through the connecting rod 5. The four retaining plates 3 are supported from the inner wall of the sleeve, and the arc-shaped structure tightly adheres to the inner wall of the sleeve, forming a uniform internal support force, thus stably fixing the sleeve at the center of the rotating disk 2.

[0035] When the device moves to the top of the wellhead, the inclined surface of the drive block 13 first contacts the outer wall of the wellhead. When the device is continuously pressed down, the inner wall of the wellhead abuts against the rotating wheel 12, pushing the moving block 11 to compress the return spring 10 in the moving groove 18, so that the rotating wheel 12 always fits against the inner wall of the wellhead.

[0036] After the casing is fixed and its axis is aligned, the rotating disk 2 drives the casing to rotate, and the threads on the outer wall of the casing gradually engage with the threads on the outer wall of the wellhead. The rotating wheel 12 provides real-time feedback on the contour of the inner wall of the wellhead during the rolling process, and with the dynamic adjustment of the return spring 10, it ensures that the casing always rotates along the axis of the wellhead during the rotation process. Finally, with the continuous rotation of the rotating disk 2, the casing can be quickly threaded onto the outer wall of the wellhead of the sealed well, thereby completing the positioning and docking.

[0037] By cooperating with the rotating wheel 12 and the return spring 10, "flexible positioning" is achieved. Even if there is a slight deviation at the wellhead, the casing position can be automatically adjusted through the sliding of the rotating wheel and the elastic compensation of the spring, which improves the adaptability to the wellhead, reduces the existence of positioning deviation, and improves the accuracy of docking positioning.

[0038] It should be noted that the specific dimensions and proportions of the various components not specified in this utility model can be adjusted according to the user's actual needs.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A well casing positioning and docking device, comprising a chassis (1), wherein a rotatable rotating disk (2) is connected to one side of the chassis (1), characterized in that, An inner sleeve (7) is fixedly installed on one side of the rotating disk (2). An outer sleeve (4) is fitted on the outer wall of the inner sleeve (7). A first motor (8) is fixedly installed at one end of the outer sleeve (4). A threaded rod (17) is drivenly connected to one side of the first motor (8). The threaded rod (17) is threadedly connected to the inside of the inner sleeve (7). A connecting rod (5) is hinged to the outer wall of the outer sleeve (4). A retaining plate is hinged to the end of the connecting rod (5) away from the outer sleeve (4). 3) A docking block (9) is fixedly installed on the inner wall of the fixed plate (3). A moving groove (18) is opened on the inner wall of the docking block (9). A movable moving block (11) is provided inside the moving groove (18). A return spring (10) is fixedly connected between the moving block (11) and the inner wall of the moving groove (18). A rotatable rotating wheel (12) is installed at the top of the moving block (11). A driving block (13) is fixedly installed on the side wall of the moving block (11).

2. A containment well casing positioning docking device as defined in claim 1 wherein: One end of the retaining plate (3) is tightly attached to the front side of the outer wall of the rotating disk (2) in the initial state.

3. A containment well casing positioning docking device as defined in claim 2 wherein: The specific number of the retaining plates (3) is four. The four retaining plates (3) are distributed in a circumferential array on the outside of the outer sleeve (4). Each retaining plate (3) is connected to the outer sleeve (4) by two connecting rods (5).

4. The well casing positioning and docking device as described in claim 3, characterized in that: The drive block (13) is inclined on the outer wall of the side near the retaining plate (3), and the edge of the rotating wheel (12) is located outside the drive block (13).

5. The well casing positioning and docking device as described in claim 4, characterized in that: Four limiting rods (6) are fixedly installed on the side wall of the rotating disk (2). The outer sleeve (4) can slide on the outer wall of the inner sleeve (7) while being fitted on the outer wall of the four limiting rods (6).

6. A containment well casing positioning docking device as defined in claim 5 wherein: A second motor (16) is fixedly installed on the rear side of the chassis (1), and a drive gear (14) is connected to one end of the second motor (16).

7. A containment well casing positioning docking device as defined in claim 6 wherein: A driven gear ring (15) is fixedly installed on the outer wall of the rotating disk (2), and the driven gear ring (15) meshes with the drive gear (14).

8. A containment well casing positioning docking device as defined in claim 1 wherein: The specific shape of the retaining plate (3) is arc-shaped.

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