Sleeve anti-abrasion joint for petroleum drilling

Abstract

The utility model discloses an anti-abrasion casing joint for petroleum drilling, which comprises a casing joint body, the outer side of the casing joint body is fixedly connected with a protruding part, the outer side of the protruding part is provided with a mounting groove, the top end of the protruding part is provided with a first threaded hole, the bottom end of the protruding part is provided with a second threaded hole, and the top end of the casing joint body is provided with a fourth groove. A fifth groove is formed in the top end of the inner side of the protruding part; the mounting groove, the first groove, a first threaded hole, a second threaded hole, a second groove, a third threaded hole, a third groove, a first spring, a first clamping block, a first shifting piece, a through hole, a first bolt, a second bolt and a fifth groove form a fixing assembly to fix the anti-abrasion bottom block, the mounting structure is firm, and dismounting is convenient; the anti-abrasion bottom block can be easily taken down to be replaced when damaged, the replacement cost is saved, the second clamping blocks with the second shifting pieces are arranged, fixing of the sleeve can be relieved only by shifting the second shifting pieces and pushing the second clamping blocks on the two sides to be away from each other during disassembly, the structure is simple, and disassembly and assembly of the sleeve are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling tools, and particularly relates to an anti-wear joint for oil drilling casings. Background Technique

[0002] Oil drilling is to use oil drilling equipment to drill through multiple sets of formations from the ground along the designed track to reach the predetermined target layer, forming a stable channel for oil and gas production or injection of required fluids, namely oil and gas wells. Drilling tools are required in the drilling work. The basic point of the casing drilling process is to cancel the conventional drill pipe and replace the drill pipe with a casing, becoming the main drilling method. During the oil drilling process, casing joints are required for the connection between casings. The casing joint is generally larger in diameter than the casing. During drilling operations, the casing joint will rub against the wellbore, increasing the drilling torque and friction resistance. Prolonged operation will cause wear of the joint.

[0003] Chinese Utility Model Patent Publication No.: CN217582051U, discloses: an anti-wear joint for oil drilling casings. This anti-wear joint for oil drilling casings is provided with an anti-wear sleeve and a connecting rod, which can play an anti-wear role for the joint during drilling work. It is provided with a clamping rod and a fixing spring, which can play a role in assisting the fixation of the connection body. However, its anti-wear sleeve cannot be disassembled and replaced. When it is damaged, the entire casing joint needs to be replaced, resulting in a high cost. At the same time, its clamping rod and spring cannot actively release the fixation with the connection body, which is inconvenient to use and has poor practicability. Content of the Utility Model

[0004] The purpose of the utility model is to provide an anti-wear joint for oil drilling casings, which can solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an anti-wear joint for oil drilling casings, including a casing joint body, a protruding part is fixedly connected to the outer side of the casing joint body, an installation groove is opened on the outer side of the protruding part, a first threaded hole is opened at the top of the protruding part, a second threaded hole is opened at the bottom of the protruding part, a fourth groove is opened at the top of the casing joint body, and a fifth groove is opened at the top inside the protruding part.

[0006] Preferably, a first groove is opened at the top of the installation groove, an anti-wear bottom block is inserted and installed inside the installation groove, an anti-wear sleeve is fixedly connected to the outer side of the anti-wear bottom block, a second groove is opened at the top of the anti-wear bottom block, a third threaded hole is opened at the top of the anti-wear bottom block, and a third groove is opened at the top of the anti-wear bottom block.

[0007] Preferably, the mounting groove, the first groove, the first threaded hole, the second threaded hole, the second groove, the third threaded hole, the third groove, the first spring, the first block, the first paddle, the through hole, the first bolt, the second bolt and the fifth groove constitute a fixing assembly, and the fixing assembly is provided with six identical ones, and the angle between the six fixing assemblies is 60°.

[0008] Preferably, the center lines of the first threaded hole, the second threaded hole, the third threaded hole, the first clamping block and the through hole are located on the same vertical line, the first bolt is adapted to the first threaded hole and the third threaded hole, the second bolt is adapted to the second threaded hole, the second bolt extends to the inside of the anti-wear bottom block, and the diameter of the through hole is larger than the diameter of the first bolt.

[0009] Preferably, one end of the first spring is fixedly connected to the anti-wear bottom block, and the other end is fixedly connected to the first clamping block, the first paddle is adapted to the first groove and the third groove, and the first clamping block is adapted to the fifth groove.

[0010] Preferably, the fourth groove, the second spring, the second clamping block and the second paddle constitute a clamping assembly, and two identical clamping assemblies are provided, and the two clamping assemblies are symmetrically distributed about the sleeve joint body.

[0011] Preferably, the second clamping block is adapted to the fourth groove, one end of the second spring is fixedly connected to the sleeve joint body, and the other end is fixedly connected to the second clamping block, the end of the second clamping block away from the second spring is an arc-shaped structure, and the second clamping block and the second paddle together form an "L"-shaped structure.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model fixes the anti-wear bottom block by setting an installation groove, a first groove, a first threaded hole, a second threaded hole, a second groove, a third threaded hole, a third groove, a first spring, a first clamping block, a first paddle, a through hole, a first bolt, a second bolt and a fifth groove to form a fixing assembly; the installation structure is firm and easy to disassemble; when the anti-wear bottom block is damaged, the anti-wear bottom block can be easily removed and replaced, saving replacement costs; a second clamping block with a second paddle is provided; when disassembling, it is only necessary to paddle the second paddle to push the second clamping blocks on both sides away from each other to release the fixation of the sleeve; the structure is simple and easy to disassemble and assemble the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the installation structure of the installation slot of the utility model;

[0015] Figure 3 This is a schematic diagram of the split structure of the utility modelFigure 1 ;

[0016] Figure 4 Schematic diagram of the split structure of the present utility model Figure 2 ;

[0017] Figure 5 Of the present utility model Figure 4 Schematic enlarged view of part A in the present utility model

[0018] Wherein: 1. Casing joint body; 2. Protruding part; 3. Installation groove; 4. First groove; 5. First threaded hole; 6. Second threaded hole; 7. Anti-wear bottom block; 8. Anti-wear sleeve; 9. Second groove; 10. Third threaded hole; 11. Third groove; 12. First spring; 13. First clamping block; 14. First dial; 15. Through hole; 16. First bolt; 17. Second bolt; 18. Fourth groove; 19. Second spring; 20. Second clamping block; 21. Second dial; 22. Fifth groove Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model

[0020] Embodiment 1

[0021] Please refer to Figure 1 , a casing anti-wear joint for oil drilling shown in the figure, including a casing joint body 1, a protruding part 2 is fixedly connected to the outside of the casing joint body 1, an installation groove 3 is opened on the outside of the protruding part 2, a first threaded hole 5 is opened at the top of the protruding part 2, a second threaded hole 6 is opened at the bottom of the protruding part 2, a fourth groove 18 is opened at the top of the casing joint body 1, and a fifth groove 22 is opened at the inner top of the protruding part 2

[0022] Please refer to Figures 1-4 , a first groove 4 is opened at the top of the installation groove 3 shown in the figure, an anti-wear bottom block 7 is inserted and installed inside the installation groove 3, an anti-wear sleeve 8 is fixedly connected to the outside of the anti-wear bottom block 7, a second groove 9 is opened at the top of the anti-wear bottom block 7, a third threaded hole 10 is opened at the top of the anti-wear bottom block 7, and a third groove 11 is opened at the top of the anti-wear bottom block 7

[0023] In this embodiment: By providing the installation groove 3 to install the anti-wear bottom block 7 and the anti-wear sleeve 8 outside it, it plays a protective role for the casing joint body 1 during the drilling operation and avoids wear of the casing joint body 1

[0024] Working principle: When in use, toggle the first dial 14 to press the first latch 13 back into the second groove 9, while compressing the first spring 12. Then insert the anti-wear bottom block 7 into the installation groove 3. Release the first dial 14, and the first spring 12 will push the first latch 13 into the fifth groove 22 to initially limit the anti-wear bottom block 7, facilitating subsequent installation. Then insert the first bolt 16 into the first threaded hole 5 and the third threaded hole 10 and tighten it to fixedly connect the protruding part 2 with the anti-wear bottom block 7. The through hole 15 provided at the top of the first latch 13 avoids affecting the screwing-in of the first bolt 16. Then screw the second bolt 17 into the anti-wear bottom block 7 through the second threaded hole 6 to further fix the anti-wear bottom block 7 in the installation groove 3. When it is necessary to disassemble the anti-wear bottom block 7, just reverse the above operations. Then connect the sleeves at both ends of the sleeve joint body 1. When the sleeve enters the sleeve joint body 1, it will squeeze the second latch 20, causing the second spring 19 to be compressed. After the sleeve is completely connected, the second spring 19 pushes the second latch 20 to assist in fixing the sleeve. When disassembling, just toggle the second dial 21 and push the second latches 20 on both sides to move away from each other to release the fixation of the sleeve. The structure is simple and convenient for disassembly and assembly.

[0025] Embodiment 2

[0026] Please refer to Figures 1-5 , this embodiment further illustrates Embodiment 1. In the figure, the installation groove 3, the first groove 4, the first threaded hole 5, the second threaded hole 6, the second groove 9, the third threaded hole 10, the third groove 11, the first spring 12, the first latch 13, the first dial 14, the through hole 15, the first bolt 16, the second bolt 17 and the fifth groove 22 form a fixing assembly. There are six identical fixing assemblies, and the included angle between the six fixing assemblies is 60°.

[0027] In this embodiment: Through the provided fixing assembly, six anti-wear bottom blocks 7 are arranged outside the protruding part 2, and the sleeve joint body 1 is protected by the anti-wear sleeve 8 outside the anti-wear bottom block 7. The provided fixing assembly facilitates the disassembly, assembly and maintenance of the anti-wear bottom block 7.

[0028] Please refer to Figures 2-5 , in the figure, the center lines of the first threaded hole 5, the second threaded hole 6, the third threaded hole 10, the first latch 13 and the through hole 15 are located on the same vertical line. The first bolt 16 is adapted to the first threaded hole 5 and the third threaded hole 10, the second bolt 17 is adapted to the second threaded hole 6, the second bolt 17 extends into the anti-wear bottom block 7, and the diameter of the through hole 15 is larger than the diameter of the first bolt 16.

[0029] In this embodiment: By means of the provided first threaded hole 5, second threaded hole 6 and first bolt 16, the first bolt 16 is inserted into the first threaded hole 5 and the third threaded hole 10 and tightened, so that the protruding part 2 is fixedly connected to the anti-wear bottom block 7. The through hole 15 provided at the top of the first clamping block 13 avoids affecting the screwing-in of the first bolt 16.

[0030] Please refer to Figure 5 , in the figure, one end of the first spring 12 is fixedly connected to the anti-wear bottom block 7, and the other end is fixedly connected to the first clamping block 13. The first dial 14 is adapted to the first groove 4 and the third groove 11, and the first clamping block 13 is adapted to the fifth groove 22.

[0031] In this embodiment: By means of the provided first dial 14, the first dial 14 is toggled to press the first clamping block 13 back into the second groove 9, and at the same time, the first spring 12 is compressed. Then, the anti-wear bottom block 7 is inserted into the installation groove 3. After the first dial 14 is released, the first spring 12 pushes the first clamping block 13 into the fifth groove 22 to perform preliminary limiting on the anti-wear bottom block 7.

[0032] Please refer to Figures 1-3 , in the figure, the fourth groove 18, the second spring 19, the second clamping block 20 and the second dial 21 form a clamping component. There are two identical clamping components, and the two clamping components are symmetrically distributed about the casing joint body 1.

[0033] In this embodiment: By means of the provided clamping component, when the casing is inserted into the casing joint body 1, the second clamping block 20 will be squeezed, so that the second spring 19 is compressed. After the casing is completely inserted, the second spring 19 pushes the second clamping block 20 to assist in fixing the casing.

[0034] Please refer to Figures 1-3 , in the figure, the second clamping block 20 is adapted to the fourth groove 18. One end of the second spring 19 is fixedly connected to the casing joint body 1, and the other end is fixedly connected to the second clamping block 20. The end of the second clamping block 20 away from the second spring 19 is of an arc-shaped structure, and the second clamping block 20 and the second dial 21 together form an "L"-shaped structure.

[0035] In this embodiment: By means of the provided second dial 21, when the casing needs to be disassembled, only the second dial 21 needs to be toggled to push the second clamping blocks 20 on both sides away from each other, and the fixing of the casing can be released. The structure is simple and convenient for disassembly and assembly.

[0036] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising" - "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process - method - article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process - method - article or device.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand 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. A casing anti-wear joint for oil drilling, comprising a casing joint body (1), characterized in that: A protrusion (2) is fixedly connected to the outer side of the casing joint body (1). An installation groove (3) is formed in the outer side of the protrusion (2). A first threaded hole (5) is formed in the top end of the protrusion (2). A second threaded hole (6) is formed in the bottom end of the protrusion (2). A fourth groove (18) is formed in the top end of the casing joint body (1). A fifth groove (22) is formed in the inner top end of the protrusion (2).

2. The anti-wear joint for casing used in oil drilling according to claim 1, characterized in that: A first groove (4) is formed in the top end of the installation groove (3). An anti-wear bottom block (7) is inserted and installed in the installation groove (3). An anti-wear sleeve (8) is fixedly connected to the outer side of the anti-wear bottom block (7). A second groove (9) is formed in the top end of the anti-wear bottom block (7). A third threaded hole (10) is formed in the top end of the anti-wear bottom block (7). A third groove (11) is formed in the top end of the anti-wear bottom block (7).

3. The anti-wear joint for oil drilling casing according to claim 2, characterized in that: The installation groove (3), the first groove (4), the first threaded hole (5), the second threaded hole (6), the anti-wear bottom block (7), the second groove (9), the third threaded hole (10), the third groove (11), the first spring (12), the first clamping block (13), the first dial (14), the through hole (15), the first bolt (16), the second bolt (17) and the fifth groove (22) form a fixing component. There are six identical fixing components, and the included angle between the six fixing components is 60°.

4. The anti-wear joint for oil drilling casing according to claim 3, wherein: The center lines of the first threaded hole (5), the second threaded hole (6), the third threaded hole (10), the first clamping block (13) and the through hole (15) are located on the same vertical line. The first bolt (16) is adapted to the first threaded hole (5) and the third threaded hole (10). The second bolt (17) is adapted to the second threaded hole (6). The second bolt (17) extends into the anti-wear bottom block (7). The diameter of the through hole (15) is larger than the diameter of the first bolt (16).

5. The anti-wear joint for oil drilling casing according to claim 3, characterized in that: One end of the first spring (12) is fixedly connected to the anti-wear bottom block (7), and the other end is fixedly connected to the first clamping block (13). The first dial (14) is adapted to the first groove (4) and the third groove (11). The first clamping block (13) is adapted to the fifth groove (22).

6. The anti-wear joint for casing in oil drilling according to claim 1, characterized in that: The fourth groove (18), the second spring (19), the second clamping block (20) and the second dial (21) form a clamping component. There are two identical clamping components, and the two clamping components are symmetrically distributed with respect to the casing joint body (1).

7. The anti-wear joint for casing used in oil drilling according to claim 6, wherein: The second clamping block (20) is adapted to the fourth groove (18). One end of the second spring (19) is fixedly connected to the casing joint body (1), and the other end is fixedly connected to the second clamping block (20). The end of the second clamping block (20) away from the second spring (19) is in an arc-shaped structure. The second clamping block (20) and the second dial (21) together form an "L" shaped structure.

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