Centralizer for oil drilling and production

Abstract

The utility model belongs to the technical field of petroleum drilling and production, and particularly relates to a centralizer for petroleum drilling and production, which comprises a centralizer main body and connecting pieces, the connecting pieces are fixedly connected to the top and the bottom of the centralizer main body, and clamping mechanisms are arranged in the connecting pieces; the clamping mechanism comprises a worm wheel disc which is rotationally connected to the interior of the connecting piece; the track groove is formed in the top of the worm wheel disc; the sliding columns are connected to the interiors of the track grooves in a sliding mode; the connecting blocks are arranged at the two ends of the surface of the sliding column in a sleeving mode and located at the top and the bottom of the worm wheel disc. One end of each connecting plate is fixedly connected to the inner side of the corresponding connecting block; and the mounting parts are fixedly connected to the other ends of the connecting plates respectively. The utility model provides a centralizer for oil drilling and production, which can quickly and flexibly fixedly connect the centralizer with a drill stem, and can obviously reduce the time for mounting and dismounting, thereby improving the overall efficiency of drilling operation.

Description

Technical Field

[0001] This utility model belongs to the field of oil drilling and production technology, and specifically relates to a centralizer for oil drilling. Background Technology

[0002] Oil drilling and production refers to the process of extracting oil and natural gas from underground oil and gas reservoirs through drilling technology. A centralizer in oil drilling is a tool used to maintain the correct position of drilling equipment within the wellbore. It is typically used in deep well drilling, directional drilling, or complex wellbore structures to ensure that drilling tools remain on the correct path, avoiding deviation, vibration, or other problems that could damage equipment or cause inaccurate drilling.

[0003] When using and installing existing centralizers, swivels are usually used to fix the centralizer to the drill string. The swivel is usually a metal ring, which requires special tools to install and remove, requiring more time and effort. Moreover, for some deep or special drilling operations, the installation and adjustment of the swivel can become more difficult. Utility Model Content

[0004] The purpose of this invention is to provide a centralizer for oil drilling that can quickly and flexibly connect the centralizer to the drill string, significantly reducing installation and disassembly time and thus improving the overall efficiency of drilling operations.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A centralizer for oil drilling includes a centralizer body and a connecting member. The connecting member is fixedly connected to the top and bottom of the centralizer body, and a clamping mechanism is provided inside the connecting member. The clamping mechanism includes: a worm gear disc, which is rotatably connected to the inside of the connecting member; a track groove, which is formed on the top of the worm gear disc; sliding columns, which are slidably connected to the inside of the track groove; connecting blocks, which are sleeved on both ends of the surface of the sliding columns and are located at the top and bottom of the worm gear disc; a connecting plate, one end of which is fixedly connected to the inner side of the connecting block; a mounting member, which is fixedly connected to the other end of the connecting plate, and passes through the connecting member and is located on the inner wall of the connecting member; and a worm, one end of which is connected to the inner wall of the connecting member through a bearing, and the other end of which passes through to the outer side of the connecting member and is engaged with one side of the worm gear disc.

[0007] Preferably, a guide rod is fixedly connected to the inner wall of the connector, and a sliding block is fixedly connected to the top of the connector, with the sliding block slidably connected to the surface of the guide rod.

[0008] Preferably, a support column is fixedly connected to the bottom of the connector, and a sliding groove is provided at the bottom of the worm gear disk, with the support column and the sliding groove being connected in cooperation.

[0009] Preferably, a knob is fixedly connected to the end of the worm gear, and the knob is circular in shape.

[0010] Preferably, an anti-slip strip is fixedly connected to the inner side of the mounting component, and the anti-slip strip is distributed in parallel on the inner side of the mounting component.

[0011] Preferably, the connector has a groove on its inner side, and the mounting part is adapted to the groove.

[0012] The technical effects achieved by this utility model are as follows:

[0013] In this invention, when installing the centralizer body onto the drill string, the centralizer body can first be fitted onto the borehole surface, and then the worm gear can be rotated. The rotation of the worm gear can drive the meshing worm wheel to rotate, and the rotation of the worm wheel can drive the squeezing sliding column to slide inside the track groove. While the sliding column is sliding, it can drive the connecting block to move inward under the limitation of the sliding block and the guide rod. The inward movement of the connecting block will drive the connecting plate and the mounting part to move inward at the same time. The inward movement of the mounting part can squeeze the drill string. Then, under the frictional resistance between the mounting part and the drill string, the centralizer body can be installed on the drill string surface. With the self-locking of the worm gear and the worm wheel, the connection stability between the centralizer body and the drill string can be improved, ensuring a firm connection between the centralizer body and the drill string, and significantly reducing the installation and disassembly time of the centralizer body, thereby improving the overall efficiency of drilling operations. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a top view sectional perspective of the connector of this utility model;

[0016] Figure 3 This is a bottom-view perspective view of the internal structure of the connector of this utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Main body of the straightener; 2. Connecting parts; 201. Worm gear; 202. Track groove; 203. Sliding column; 204. Connecting block; 205. Connecting plate; 206. Mounting parts; 207. Worm; 301. Guide rod; 302. Sliding block; 401. Support column; 402. Sliding groove; 5. Knob; 6. Anti-slip strip; 7. Groove. Detailed Implementation

[0019] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0020] like Figures 1-3 As shown, a centralizer for an oil drilling machine includes a centralizer body 1 and a connector 2. The connector 2 is fixedly connected to the top and bottom of the centralizer body 1, and a clamping mechanism is provided inside the connector 2. The clamping mechanism includes: a worm gear disc 201, which is rotatably connected to the inside of the connector 2; a track groove 202, which is formed on the top of the worm gear disc 201; sliding columns 203, which are slidably connected to the inside of the track groove 202; connecting blocks 204, which are sleeved on both ends of the surface of the sliding columns 203, and are located at the top and bottom of the worm gear disc 201; and a connecting plate 205, one end of which is connected to the worm gear disc 201. The ends are respectively fixedly connected to the inner side of the connecting block 204; the mounting part 206 is fixedly connected to the other end of the connecting plate 205, the mounting part 206 passes through the connecting part 2 and is located on the inner wall of the connecting part 2; the worm 207 has one end connected to the inner wall of the connecting part 2 through a bearing, and the other end of the worm 207 passes through to the outer side of the connecting part 2. The worm 207 is meshed with one side of the worm wheel 201. Through the cooperation of the snap-fit ​​mechanism, the connection design of the stabilizer body 1 to the drill string is quickly shortened, significantly reducing the time for installing and replacing the stabilizer body 1, reducing non-productive time during tripping in and out of the drill string, thereby improving the overall drilling and production efficiency and reducing operating costs.

[0021] like Figure 2 As shown, a guide rod 301 is fixedly connected to the inner wall of the connector 2, and a sliding block 302 is fixedly connected to the top of the connecting block 204. The sliding blocks 302 are slidably connected to the surface of the guide rod 301. When the worm gear 201 rotates and squeezes the sliding column 203 to slide inside the track groove 202, the sliding column 203 will simultaneously drive the sliding block 302 to slide on the surface of the guide rod 301, ensuring that the movement path of the sliding block 302 is controlled and will not deviate or move freely, thereby providing precise positioning and driving the connecting plate 205 and the mounting part 206 to fit tightly against the drill string.

[0022] like Figure 3 As shown, a support column 401 is fixedly connected to the bottom of the connector 2. A sliding groove 402 is provided at the bottom of the worm gear 201. The support column 401 and the sliding groove 402 are connected in cooperation. When the worm gear 201 rotates, the cooperation between the support column 401 and the sliding groove 402 can prevent the worm gear 201 from tilting or shifting due to the force, and keep it moving in a fixed plane, thereby improving the stability of the clamping mechanism.

[0023] like Figure 1 = Figure 3 As shown, a knob 5 is fixedly connected to the end of the worm 207. The knob 5 is circular in shape and is usually designed to be easy to grip, so that the operator can easily manually adjust or rotate the worm 207. By rotating the knob 5, the movement direction or position of the worm 207 can be precisely controlled, which is more convenient and labor-saving for operating the clamping mechanism.

[0024] like Figures 1-3 As shown, an anti-slip strip 6 is fixedly connected to the inner side of the mounting component 206. The anti-slip strip 6 is distributed in parallel on the inner side of the mounting component 206. By increasing the friction between the anti-slip strip 6 and the drill string, it can effectively prevent the components from sliding or loosening during installation or use. Especially in environments with large loads or vibrations, the anti-slip strip 6 can enhance the stability of the connection and ensure that the components are firmly fixed.

[0025] like Figure 2 As shown, the inner side of the connector 2 has a slot 7. The mounting part 206 is adapted to the slot 7. When installing or disassembling the centralizer body 1, the mounting part 206 will move flexibly inside the slot 7, which makes it convenient for the mounting part 206 to flexibly pass through the connector 2 and move freely inside the mounting part 206, preventing the mounting part 206 from colliding with the connector 2 due to insufficient space for movement when squeezing the drill string during installation.

[0026] The working principle of this utility model is as follows: When installing the centralizer body 1 on the drill string, the centralizer body 1 can be first placed on the surface of the drill hole, and then the worm 207 can be rotated. The rotation of the worm 207 can drive the meshing worm wheel 201 to rotate. The rotation of the worm wheel 201 can drive the extrusion sliding column 203 to slide inside the track groove 202. While the sliding column 203 is sliding, it can drive the connecting block 204 to move inward under the limitation of the sliding block 302 and the guide rod 301. The connecting block 204 moves inward at the same time. The movement will cause the connecting plate 205 and the mounting part 206 to move inward simultaneously. The inward movement of the mounting part 206 can squeeze the drill string. Then, under the frictional resistance between the mounting part 206 and the drill string, the centralizer body 1 can be installed on the surface of the drill string. With the self-locking of the worm 207 and the worm wheel 201, the connection stability between the centralizer body 1 and the drill string can be improved, ensuring a firm connection between the centralizer body 1 and the drill string, and significantly reducing the installation and disassembly time of the centralizer body 1, thereby improving the overall efficiency of drilling operations.

[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A centralizer for oil drilling, comprising a centralizer body (1) and a connector (2), wherein the connector (2) is fixedly connected to the top and bottom of the centralizer body (1), characterized in that: The connector (2) is provided with a locking mechanism inside; The clamping mechanism includes a worm gear (201), which is rotatably connected to the interior of the connector (2); Track groove (202), the track groove (202) is formed on the top of the worm gear disk (201); Sliding columns (203) are slidably connected to the inside of the track grooves (202); Connecting block (204), the connecting block (204) is sleeved on both ends of the surface of the sliding column (203), the connecting block (204) is located at the top and bottom of the worm gear disk (201); A connecting plate (205), one end of which is fixedly connected to the inner side of the connecting block (204); Mounting component (206), which is fixedly connected to the other end of the connecting plate (205), and the mounting component (206) penetrates the connecting component (2) and is located on the inner wall of the connecting component (2); The worm (207) has one end connected to the inner wall of the connector (2) via a bearing, and the other end of the worm (207) extends to the outer side of the connector (2). The worm (207) is meshed with one side of the worm wheel (201).

2. A centralizer for oil drilling according to claim 1, characterized in that: The inner wall of the connector (2) is fixedly connected to a guide rod (301), and the top of the connector (204) is fixedly connected to a sliding block (302). The sliding block (302) is slidably connected to the surface of the guide rod (301).

3. A centralizer for oil drilling according to claim 1, characterized in that: The bottom of the connector (2) is fixedly connected to a support column (401), and the bottom of the worm gear disk (201) is provided with a sliding groove (402). The support column (401) and the sliding groove (402) are connected in cooperation.

4. A centralizer for oil drilling according to claim 1, characterized in that: A knob (5) is fixedly connected to the end of the worm (207), and the knob (5) is circular in shape.

5. A centralizer for oil drilling according to claim 1, characterized in that: The inner side of the mounting component (206) is fixedly connected with anti-slip strips (6), which are distributed in parallel on the inner side of the mounting component (206).

6. A centralizer for oil drilling according to claim 1, characterized in that: The connector (2) has a slot (7) on its inner side, and the mounting part (206) is adapted to the slot (7).

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