Adjustable rigid centralizer

Abstract

The utility model discloses a kind of adjustable rigid centralizer, including main square column, the main square column end portion is equipped with casing pipe, the inboard end of casing pipe is fixedly installed with stabilizer bar, the stabilizer bar is attached with stable hole inner wall, the main square column end portion side is fixed with locking bolt, the locking bolt end portion is equipped with locking nut, the locking bolt is penetrated rail window, the rail window is set in casing pipe outside, the casing pipe end portion is fixed with clamping plate, the inboard of clamping plate is attached with sleeve ring outside, the clamping plate inner wall bottom is fixed with positioning plate, the positioning plate is attached with guide groove inner wall, the guide groove is set in sleeve ring bottom. The adjustable rigid centralizer, adopt novel structure design, not only the structural strength that main square column is connected with casing pipe is enough, and overall length can be conveniently adjusted, while sleeve ring can be conveniently disassembled and installed, it is convenient to adaptively adjust according to use demand, substantially improve the applicability of device whole.

Description

Technical Field

[0001] This utility model relates to the field of centralizer technology, specifically an adjustable rigid centralizer. Background Technology

[0002] Rigid centralizers are key tools used in oil and gas drilling or pipeline construction. They are mainly used to ensure that the casing or pipeline is centered in the wellbore or borehole, avoiding poor cementing quality, casing wear, or difficulties in subsequent operations due to eccentricity.

[0003] Existing adjustable rigid centralizers, such as the Chinese utility model patent CN221743347U entitled "An Adjustable Rigid Centralizer," include two sleeves. Multiple evenly distributed fixing blocks are fixedly connected to the outer sides of both sleeves. Two bolts are threaded into the interior of each fixing block, and the fixing blocks are fixedly connected to the sleeves via these bolts. A fixing rod is fixedly connected to the top of one fixing block, and a movable rod is slidably connected inside the fixing rod. The top of the movable rod is fixedly connected to the bottom of the other fixing block. A fixing component, including a spring, is located inside the movable rod. The locking structure connecting the fixing rod and the movable rod in this patent solution lacks stability, the adjustment distance is limited by the locking groove, and the sleeves cannot be easily replaced. Therefore, an adjustable rigid centralizer needs to be designed to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable rigid centralizer to solve the problems mentioned in the background art, such as insufficient stability of the connection and locking structure of the fixed rod and the movable rod of the existing device, the limitation of the adjustment distance by the slot, and the inability to easily replace the sleeve.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable rigid stabilizer, comprising a main square column, a sleeve installed at the end of the main square column, a stabilizing rod fixedly installed at the inner end of the sleeve, the stabilizing rod fitting against the inner wall of the stabilizing hole, a locking bolt fixed on one side of the end of the main square column, a locking nut installed at the end of the locking bolt, the locking bolt passing through a track window, the track window being opened on the outer side of the sleeve, a clamping plate fixed at the end of the sleeve, the inner side of the clamping plate fitting against the outer side of the collar, a positioning plate fixed at the bottom of the inner wall of the clamping plate, the positioning plate fitting against the inner wall of the guide groove, the guide groove being opened at the bottom of the collar, an installation hole being opened at the top of the clamping plate, a fastening bolt passing through the installation hole, a fastening nut installed at the top of the fastening bolt, the bottom end of the fastening bolt fitting against the inner wall of the limiting groove, the limiting groove being opened at the edge of the top surface of the collar.

[0006] Preferably, the sleeves are symmetrically distributed about the center of the main square column, and the centers of the main square column, the sleeves, and the clamping plates are on the same vertical line.

[0007] Preferably, the stabilizing rod is slidably connected to the stabilizing hole, and the length of the stabilizing rod is greater than 3 / 4 of the length of the sleeve.

[0008] Preferably, the locking bolt is slidably connected to the track window, and the center of the locking bolt and the center of the main square column are on the same vertical plane.

[0009] Preferably, the side view cross-sectional shape of the clamping plate is "匚"-shaped, and the clamping plates are equally angularly distributed about the center of the collar.

[0010] Preferably, the centers of the positioning plate, the guiding groove, the mounting hole, the fastening bolt, and the limiting groove are on the same vertical plane. The width of the positioning plate is greater than half of the width of the clamping plate, and the front view cross-sectional shape of the limiting groove is "丄"-shaped.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The adjustable rigid centralizer adopts a novel structural design. Not only is the structural strength of the connection between the main square column and the sleeves sufficient, but the overall length can be adjusted conveniently. At the same time, the collar can be disassembled and installed conveniently, facilitating adaptive adjustment according to the usage requirements, and greatly improving the overall applicability of the device;

[0012] 1. Through the structural design of the locking bolt, the locking nut, and the track window, the relative positions of the sleeve and the main square column can be adjusted conveniently and fixed stably. In cooperation with the stabilizing rod and the stabilizing hole, the stability of the connection between the sleeve and the main square column can be further improved;

[0013] 2. Through the structural design of the positioning plate, the guiding groove, the mounting hole, the fastening bolt, the fastening nut, and the limiting groove, not only can the clamping plate and the collar be stably connected and locked, but the clamping plate can be separated from the collar conveniently, facilitating the replacement of collars of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view structural schematic diagram of the present utility model;

[0015] Figure 2 is a front view cross-sectional structural schematic diagram of the present utility model;

[0016] Figure 3 is a top view structural schematic diagram of the present utility model;

[0017] Figure 4 is a top view cross-sectional structural schematic diagram of the collar of the present utility model.

[0018] In the diagram: 1. Main square column; 2. Sleeve; 3. Stabilizing rod; 4. Stabilizing hole; 5. Locking bolt; 6. Locking nut; 7. Track window; 8. Clamping plate; 9. Collar; 10. Positioning plate; 11. Guide groove; 12. Mounting hole; 13. Fastening bolt; 14. Fastening nut; 15. Limiting groove. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a technical solution: an adjustable rigid stabilizer, comprising a main square column 1, a sleeve 2, a stabilizing rod 3, a stabilizing hole 4, a locking bolt 5, a locking nut 6, a track window 7, a clamping plate 8, a collar 9, a positioning plate 10, a guide groove 11, a mounting hole 12, a fastening bolt 13, a fastening nut 14, and a limiting groove 15. A sleeve 2 is installed at the end of the main square column 1, and a stabilizing rod 3 is fixedly installed at the inner end of the sleeve 2. The stabilizing rod 3 fits against the inner wall of the stabilizing hole 4. A locking bolt 5 is fixed to one side of the end of the main square column 1, and a locking screw is installed at the end of the locking bolt 5. The locking bolt 5 passes through the track window 7, which is located on the outside of the sleeve 2. The end of the sleeve 2 is fixed with a retaining plate 8. The inner side of the retaining plate 8 is in contact with the outer side of the collar 9. The bottom of the inner wall of the retaining plate 8 is fixed with a positioning plate 10, which is in contact with the inner wall of the guide groove 11. The guide groove 11 is located at the bottom of the collar 9. The top of the retaining plate 8 is provided with an installation hole 12, in which a fastening bolt 13 is installed. The top of the fastening bolt 13 is provided with a fastening nut 14, and the bottom of the fastening bolt 13 is in contact with the inner wall of the limiting groove 15. The limiting groove 15 is located at the edge of the top surface of the collar 9.

[0021] In this example, the sleeve 2 is symmetrically distributed about the center of the main square column 1. The center of the main square column 1, the center of the sleeve 2, and the center of the clamping plate 8 are on the same vertical line. The above structural design makes the overall structure of the main square column 1, sleeve 2, and clamping plate 8 stable, ensuring that the overall structural strength of the device is high.

[0022] The stabilizer bar 3 and the stabilizer hole 4 are slidably connected. The length of the stabilizer bar 3 is greater than 3 / 4 of the length of the sleeve 2. The above structural design allows the stabilizer bar 3 to slide relative to the stabilizer hole 4 and to limit and stabilize the sleeve 2 and the main square column 1.

[0023] The locking bolt 5 is slidably connected to the track window 7. The center of the locking bolt 5 and the center of the main square column 1 are on the same vertical plane. The above structural design enables the sleeve 2 to slide relative to the locking bolt 5 with the track window 7, and stably adjusts the overall length of the rod-shaped structure composed of the main square column 1 and the sleeve 2.

[0024] The side view cross-sectional shape of the clamping plate 8 is a "匚" shape, and the clamping plates 8 are equally angularly distributed about the center of the collar 9. The above structural design enables the clamping plate 8 to fit stably with the collar 9, ensuring the strength of the overall structure.

[0025] The centers of the positioning plate 10, the guiding groove 11, the mounting hole 12, the fastening bolt 13 and the limiting groove 15 are on the same vertical plane. The width of the positioning plate 10 is greater than half of the width of the clamping plate 8. The front view cross-sectional shape of the limiting groove 15 is a "丄" shape. The above structural design facilitates the disassembly and installation of the clamping plate 8 and the collar 9, and limits the clamping plate 8 and the collar 9 to prevent the clamping plate 8 from tilting.

[0026] Working principle: When in use, according to the size of the sleeve or pipeline, select a collar 9 of a suitable size. Align the positioning plate 10 at the inner bottom of the clamping plate 8 with the open end of the guiding groove 11, and align the bottom end of the fastening bolt 13 with the open end of the limiting groove 15. Horizontally push the clamping plate 8 to clamp on the collar 9. The positioning plate 10 slides into the guiding groove 11, and the bottom end of the fastening bolt 13 slides into the limiting groove 15. Rotate the fastening nut 14 to squeeze the clamping plate 8 and the collar 9 to fit and fix.

[0027] Subsequently, pull the clamping plate 8 and the sleeve 2 away from the center of the main square column 1. The sleeve 2 slides along the main square column 1. The sleeve 2 slides relative to the locking bolt 5 with the track window 7. At the same time, the stabilizing rod 3 slides out of the stabilizing hole 4 until the overall length is sufficient. Rotate the locking nut 6 to squeeze the sleeve 2 and the main square column 1 to fix, and then the whole device can be sleeved outside the sleeve or pipeline for扶正 (the specific meaning of this Chinese word needs to be determined according to the context, it may be something like straightening or aligning). This is the working principle of this adjustable rigid扶正器 (the specific meaning of this Chinese word needs to be determined according to the context).

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable rigid centralizer, comprising a main square column (1), characterized in that: A sleeve (2) is installed at the end of the main square column (1). A stabilizing rod (3) is fixedly installed at the inner end of the sleeve (2). The stabilizing rod (3) is in contact with the inner wall of the stabilizing hole (4). A locking bolt (5) is fixed to one side of the end of the main square column (1). A locking nut (6) is installed at the end of the locking bolt (5). The locking bolt (5) passes through the track window (7). The track window (7) is opened on the outer side of the sleeve (2). A clamping plate (8) is fixed to the end of the sleeve (2). The inner side of the clamping plate (8) is in contact with the outer side of the collar (9). A positioning plate (10) is fixed to the bottom of the inner wall of the clamping plate (8). The positioning plate (10) is in contact with the inner wall of the guiding groove (11). The guiding groove (11) is opened at the bottom of the collar (9). An installation hole (12) is opened at the top of the clamping plate (8). A fastening bolt (13) is installed through the installation hole (12). A fastening nut (14) is installed at the top of the fastening bolt (13). The bottom end of the fastening bolt (13) is in contact with the inner wall of the limiting groove (15). The limiting groove (15) is opened at the edge of the top surface of the collar (9).

2. The adjustable rigid centralizer according to claim 1, characterized in that: The sleeves (2) are symmetrically distributed about the center of the main square column (1). The centers of the main square column (1), the sleeves (2) and the clamping plates (8) are on the same vertical line.

3. The adjustable rigid centralizer according to claim 1, characterized in that: The stabilizing rod (3) is slidably connected to the stabilizing hole (4). The length of the stabilizing rod (3) is greater than 3 / 4 of the length of the sleeve (2).

4. An adjustable rigid centralizer according to claim 1, characterized in that: The locking bolt (5) is slidably connected to the track window (7). The center of the locking bolt (5) and the center of the main square column (1) are on the same vertical plane.

5. An adjustable rigid centralizer according to claim 1, characterized in that: The side view profile shape of the clamping plate (8) is "匚"-shaped. The clamping plates (8) are equally angularly distributed about the center of the collar (9).

6. An adjustable rigid centralizer according to claim 1, characterized in that: The centers of the positioning plate (10), the guiding groove (11), the installation hole (12), the fastening bolt (13) and the limiting groove (15) are on the same vertical plane. The width of the positioning plate (10) is greater than half of the width of the clamping plate (8). The front view profile shape of the limiting groove (15) is "丄"-shaped.

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