Clamping device for top drive casing running

Abstract

The utility model relates to the technical field of petroleum drilling, in particular to a clamping device for top drive casing running. The clamping device used for the top drive lower casing pipe comprises a supporting frame, and an auxiliary assembly used for conducting auxiliary fixing on the casing pipe is arranged at the inner top of the supporting frame. The auxiliary assembly comprises a linkage ring, the top of the linkage ring is provided with a plurality of annularly-distributed vertical telescopic rods, the top ends of the multiple vertical telescopic rods are provided with a same fixedly-connected supporting ring, and the top of the supporting ring is fixedly connected with the inner top of the supporting frame. According to the clamping device for the top-drive lower casing pipe, through the arrangement of the auxiliary assembly, in the casing pipe connecting process, the air cylinder can be controlled to stretch, the stretching air cylinder can drive the arc-shaped extrusion piece at the end to be unfolded, and when the outer wall of the arc-shaped extrusion piece abuts against the inner wall of the casing pipe, the arc-shaped extrusion piece can be pressed against the inner wall of the casing pipe. And auxiliary clamping can be carried out on the interior of the sleeve, so that the later-stage connection stability of the sleeve can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling, in particular to a clamping device for top drive casing. Background Art

[0002] According to the requirements of oil drilling technology, casing lowering and cementing operations must be carried out after each drilling operation is completed. The purpose is to reinforce the well wall and prevent collapse. The clamping device used for top drive casing lowering is a key device for casing lowering. It combines the advantages of top drive and casing drilling technology, allowing the casing to complete the rotation, lifting and lowering, and mud circulation at the same time, thereby improving the efficiency and success rate of casing lowering operations.

[0003] The existing Chinese patent publication number CN221524764U is a clamping device for top drive casing. It can be seen from the contents recorded in its specification that when the device is in use, the casing is clamped and fixed mainly by the force exerted by the first elastic member on the arc clamping plate. However, due to the relatively large weight of the casing, the casing is clamped and fixed simply by the squeezing and clamping force of the elastic member, thereby reducing the stability of the casing fixation.

[0004] Therefore, it is necessary to provide a new clamping device for top drive casing to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a clamping device for top drive casing.

[0006] The clamping device for top drive casing provided by the utility model comprises: a support frame, wherein the inner top of the support frame is provided with an auxiliary component for auxiliary fixing of the casing;

[0007] The auxiliary component includes a linkage ring, a plurality of vertical telescopic rods distributed in an annular manner are arranged on the top of the linkage ring, a support ring with the same fixed connection is arranged on the top of the plurality of vertical telescopic rods, and the top of the support ring is fixedly connected to the inner top of the support frame;

[0008] A top block is arranged on the top of the linkage ring, a pressure sensor is arranged on the bottom of the support ring, and the pressure sensor is located opposite to the top block.

[0009] Preferably, a fixedly connected mounting frame is provided at the bottom of the support frame, a guide cylinder is provided at the center of the mounting frame, the guide cylinder is a trumpet-shaped structure, and the end of the guide cylinder with a larger opening faces downward.

[0010] Preferably, slidingly connected insertion rods are inserted on both sides of the support frame, and the ends of the insertion rods on both sides located inside the support frame are provided with fixedly connected arc clamps, and the ends of the insertion rods on both sides located outside the support frame are provided with fixedly connected guide blocks.

[0011] Preferably, a spring a is sleeved on the outside of the insertion rod, one end of the spring a is fixedly connected to the support frame, and the other end of the spring a is fixedly connected to the guide block.

[0012] Preferably, a fixedly connected support column is provided on the inner top of the support frame, and the support column is a polygonal structure. A fixedly connected cylinder is provided on each side wall of the support column, and a fixedly connected arc-shaped extrusion sheet is provided on the end of the cylinder, and a fixedly connected horizontal telescopic rod is provided between the arc-shaped extrusion sheet and the support column.

[0013] Preferably, a spring b is sleeved on the outside of the vertical telescopic rod, one end of the spring b is fixedly connected to the support ring, and the other end of the spring b is fixedly connected to the linkage ring.

[0014] Compared with the related art, the clamping device for top drive casing provided by the utility model has the following beneficial effects:

[0015] 1. The utility model is provided with auxiliary components. During the connection process of the sleeve, the cylinder can be controlled to extend. The extended cylinder will drive the arc-shaped extrusion piece at the end to expand. When the outer wall of the arc-shaped extrusion piece abuts against the inner wall of the sleeve, the inside of the sleeve can be auxiliary clamped, thereby improving the connection stability of the sleeve in the later stage.

[0016] 2. The utility model provides a guide cylinder, which can guide the insertion trajectory of the sleeve when the sleeve is inserted, so that the sleeve can be quickly moved between the two arc-shaped clamping plates inside the support frame, thereby improving the alignment speed and accuracy of the sleeve connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a preferred embodiment of a clamping device for top drive casing provided by the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the auxiliary components shown;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the support column and its components shown;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure of the installation frame and its components shown;

[0021] Figure 5 for Figure 1 A schematic structural diagram of the support frame and its components shown.

[0022] Numbers in the figure: 1. Support frame; 11. Insert rod; 12. Spring a; 13. Arc-shaped clamp; 14. Guide block; 2. Auxiliary component; 21. Linkage ring; 211. Top block; 22. Support ring; 221. Pressure sensor; 23. Vertical telescopic rod; 231. Spring b; 3. Support column; 31. Horizontal telescopic rod; 32. Cylinder; 33. Arc-shaped extrusion sheet; 4. Mounting frame; 41. Guide cylinder. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0025] See also Figures 1 to 5 The embodiment of the utility model provides a clamping device for top drive casing, which comprises a support frame 1, and an auxiliary component 2 for auxiliary fixing of the casing is provided at the inner top of the support frame 1.

[0026] In the embodiments of the present invention, please refer to Figures 1 to 5 The auxiliary component 2 includes a linkage ring 21, and a plurality of annularly distributed vertical telescopic rods 23 are provided at the top of the linkage ring 21. The tops of the plurality of vertical telescopic rods 23 are provided with a support ring 22 that is fixedly connected with the same, and the top of the support ring 22 is fixedly connected to the inner top of the support frame 1; a top block 211 is provided at the top of the linkage ring 21, and a pressure sensor 221 is provided at the bottom of the support ring 22, and the pressure sensor 221 is located opposite to the position of the top block 211, and a spring b231 is provided on the outer sleeve of the vertical telescopic rod 23, one end of the spring b231 is fixedly connected to the support ring 22, and the other end of the spring b231 is fixedly connected to the linkage ring 21, and a fixedly connected support column 3 is provided at the inner top of the support frame 1, and the support column 3 is a polygonal structure, and a fixedly connected cylinder 32 is provided on each side wall of the support column 3, and a fixedly connected arc-shaped extrusion sheet 33 is provided at the end of the cylinder 32, and a fixedly connected horizontal telescopic rod 31 is arranged between the arc-shaped extrusion sheet 33 and the support column 3.

[0027] It should be noted that: during the connection process of the sleeve, when the sleeve moving upward squeezes the linkage ring 21 so that the top block 211 on the top thereof abuts against the pressure sensor 221, the terminal controller can control the cylinder 32 to extend upon receiving the signal from the pressure sensor 221, and the extended cylinder 32 will drive the arc-shaped extrusion sheet 33 at the end to expand, and when the outer wall of the arc-shaped extrusion sheet 33 abuts against the inner wall of the sleeve, the inside of the sleeve can be auxiliary clamped, thereby improving the connection stability of the sleeve in the later stage;

[0028] By providing the horizontal telescopic rods 31, the plurality of horizontal telescopic rods 31 can increase the lateral torsion resistance of the cylinder 32, thereby improving the supporting strength of the cylinder 32;

[0029] It should also be noted that the retractable stroke of the vertical telescopic rod 23 is offset by the distance from the top of the top block 211 to the bottom of the pressure sensor 221, so that when the sleeve is inserted and installed, the phenomenon of excessive squeezing force of the sleeve being continuously inserted causing damage to the pressure sensor 221 can be reduced;

[0030] At the same time, by setting the spring b231, after a sleeve is put on later, when the sleeve is moved out from the inside of the support frame 1, the spring b231 will reset the linkage ring 21 through its own force.

[0031] In the embodiments of the present invention, please refer to Figures 1 to 5 A fixedly connected mounting frame 4 is provided at the bottom of the supporting frame 1. A guide cylinder 41 is provided at the center of the mounting frame 4. The guide cylinder 41 is a trumpet-shaped structure, and the end of the guide cylinder 41 with a larger opening faces downward.

[0032] It should be noted that: through the setting of the horn structure guide tube 41, during the insertion process of the sleeve, the relatively large opening specification of the guide bottom can make the connected sleeve more smoothly inserted into the guide tube 41, so that it can be inserted into the interior of the support frame 1 along the guide tube 41, so that the sleeve can be quickly moved between the two arc-shaped clamping plates 13 inside the support frame 1, thereby improving the alignment speed and accuracy of the sleeve connection.

[0033] In the embodiments of the present invention, please refer to Figures 1 to 5 Slidingly connected insertion rods 11 are inserted on both sides of the support frame 1, and a fixedly connected arc clamp 13 is provided at one end of the insertion rods 11 on both sides located inside the support frame 1, and a fixedly connected guide block 14 is provided at one end of the insertion rods 11 on both sides located outside the support frame 1. A spring a12 is sleeved on the outside of the insertion rod 11, one end of the spring a12 is fixedly connected to the support frame 1, and the other end of the spring a12 is fixedly connected to the guide block 14.

[0034] It should be noted that the guide block 14 and the U-shaped push frame in the publication number CN221524764U are on the same horizontal plane, and the side wall of the guide block 14 abuts against the end of the U-shaped push frame and is slidably connected, and the side wall of the guide block 14 abutting against the U-shaped push frame is an inclined section structure;

[0035] During later use, when the U-shaped push frame in the publication number CN221524764U squeezes the guide block 14, the inclined cross-sectional structure can smoothly convert the squeezing force of the U-shaped push frame into an outward driving force for the insertion rod 11, thereby allowing the arc-shaped clamping plates 13 on both sides to expand outward so that the sleeve can be inserted into the support frame 1.

[0036] The working principle of the clamping device for top drive casing provided by the utility model is as follows;

[0037] When the device is used, the support frame 1 can be installed at the bottom end of the middle connecting rod with the publication number CN221524764U. When the sleeve needs to be connected, when the U-shaped push frame in the publication number CN221524764U squeezes the guide block 14, the cross-sectional structure of the outer wall of the guide block 14 can drive the arc-shaped clamping plate 13 to move away from the center of the support frame 1 through the insertion rod 11;

[0038] Then, the sleeve to be connected can be taken out, and the end of the sleeve can be inserted into the support frame 1. During this process, the trumpet-shaped guide cylinder 41 located below the support frame 1 can guide the inserted sleeve, so that the sleeve can move along the center of the guide cylinder 41 toward the inside of the support frame 1, thereby making the movement and docking of the sleeve faster and more accurate.

[0039] When the top of the inserted sleeve hits the bottom of the linkage ring 21 in the auxiliary component 2, the linkage ring 21 squeezed by the sleeve will move stably along the vertical telescopic rod 23, and the top block 211 on its top will move synchronously when the linkage ring 21 moves. When the top of the top block 211 hits the pressure sensor 221 on the top of the support ring 22, the controller of the external terminal will monitor the value change of the pressure sensor 221, so as to control the cylinder 32 to extend. At this time, the extended cylinder 32 will drive the arc-shaped extrusion sheet 33 at the end to expand outward. When the outer wall of the arc-shaped extrusion sheet 33 abuts against the inner wall of the sleeve, the extrusion of the guide block 14 by the external U-shaped push frame can be released. At this time, the spring a12 outside the insertion rod 11 will drive the arc-shaped clamping plate 13 to move toward the inner side of the support frame 1 through its own force. When the outer wall of the arc-shaped clamping plate 13 abuts against the outer wall of the sleeve, the combination with the arc-shaped extrusion sheet 33 can realize the double fixation of the inside and outside of the sleeve, thereby improving the stability of the sleeve installation, so that the device with the publication number CN221524764U can stably perform the sleeve lowering operation in the later stage.

[0040] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0041] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A clamping device for top drive casing, characterized in that: include: A support frame (1), wherein an auxiliary component (2) for assisting in fixing the sleeve is provided on the inner top of the support frame (1); The auxiliary component (2) comprises a linkage ring (21), a plurality of vertical telescopic rods (23) distributed in an annular pattern are provided on the top of the linkage ring (21), a support ring (22) fixedly connected to the top of the plurality of vertical telescopic rods (23) is provided on the top of the plurality of vertical telescopic rods (23), and the top of the support ring (22) is fixedly connected to the inner top of the support frame (1); A top block (211) is provided at the top of the linkage ring (21), and a pressure sensor (221) is provided at the bottom of the support ring (22), and the pressure sensor (221) is located opposite to the top block (211).

2. The clamping device for top drive casing according to claim 1, characterized in that: A fixedly connected mounting frame (4) is provided at the bottom of the support frame (1), and a guide cylinder (41) is provided at the center of the mounting frame (4). The guide cylinder (41) is a trumpet-shaped structure, and the larger opening end of the guide cylinder (41) faces downward.

3. The clamping device for top drive casing according to claim 1, characterized in that: Slidingly connected insertion rods (11) are inserted on both sides of the support frame (1), and fixedly connected arc-shaped clamping plates (13) are provided at one end of the insertion rods (11) located inside the support frame (1), and fixedly connected guide blocks (14) are provided at one end of the insertion rods (11) located outside the support frame (1).

4. The clamping device for top drive casing according to claim 3, characterized in that: A spring a (12) is sleeved on the outside of the insertion rod (11), one end of the spring a (12) is fixedly connected to the support frame (1), and the other end of the spring a (12) is fixedly connected to the guide block (14).

5. The clamping device for top drive casing according to claim 1, characterized in that: A fixedly connected support column (3) is provided at the inner top of the support frame (1); the support column (3) is a polygonal structure; each side wall of the support column (3) is provided with a fixedly connected cylinder (32); an end of the cylinder (32) is provided with a fixedly connected arc-shaped extrusion sheet (33); and a fixedly connected horizontal telescopic rod (31) is provided between the arc-shaped extrusion sheet (33) and the support column (3).

6. The clamping device for top drive casing according to claim 1, characterized in that: A spring b (231) is sleeved on the outside of the vertical telescopic rod (23), one end of the spring b (231) is fixedly connected to the support ring (22), and the other end of the spring b (231) is fixedly connected to the linkage ring (21).

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