Hard rock alloy sleeve rigid stabilizer

Abstract

The utility model discloses a hard rock alloy casing rigid stabilizer, which relates to the stabilizer field, and comprises a stable body and a roller, the stable body is internally provided with an inner pipe, the inner pipe and the stable body are fixedly connected through a plurality of connecting blocks, the plurality of connecting blocks are internally provided with a rotating pipe in a penetrating manner, and the rotating pipe is provided with a plurality of rollers. A plurality of evenly-distributed jacking blocks are fixedly arranged on the pipe wall of the rotating pipe, a plurality of evenly-distributed mounting grooves are formed in the outer side wall of the stability body, fixing sleeves are arranged in the mounting grooves, the rolling wheels are rotationally arranged in the fixing sleeves, and springs are fixedly arranged between the side walls of the fixing sleeves and the mounting grooves. A jacking rod in contact with the jacking block is fixedly arranged on the side wall of the fixing sleeve, and one end of the rotating pipe extends to the outside of the stable body. According to the utility model, the positions of a plurality of rollers can be conveniently adjusted at the same time, so that the stabilizer can be suitable for boreholes with different diameters, and a drill rod can be effectively stabilized.

Description

Technical Field

[0001] The utility model relates to the field of stabilizers, in particular to a hard rock alloy casing rigid stabilizer. Background Art

[0002] The stabilizer, also known as the centralizer, is a tool that stabilizes downhole drilling tools and prevents them from deviating. It is connected to a section of the drill pipe column near the large-diameter drilling tool and is used to stabilize the drilling direction. It is an important tool for preventing well inclination changes in oil, natural gas and geological exploration drilling projects.

[0003] For example, patent number CN201635674U discloses a roller stabilizer for gas drilling, including a stabilizer body, on which four protruding straightening edges are arranged along the axial direction of the stabilizer body, and both end portions of the straightening edges are wedge-shaped, and a roller groove is opened on the straightening edges along the axial direction of the stabilizer body, and a roller shaft is fixed in the roller groove, and a roller is installed on the roller shaft, and the roller protrudes from the surface of the straightening edge.

[0004] The position between the roller and the stabilizer body in the above scheme is fixed, which makes it inconvenient to adjust the diameter of the stabilizer according to the rotation speed of the drilling tool, and it does not work in the expanded wellbore section and cannot effectively stabilize the drill pipe. Therefore, a hard rock alloy casing rigid stabilizer is proposed. Utility Model Content

[0005] In view of the problem that the diameter of the existing stabilizer is not easy to adjust, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a hard rock alloy casing rigid stabilizer to solve the problems raised by the background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A hard rock alloy casing rigid stabilizer comprises a stability body and a roller, wherein an inner tube is provided inside the stability body, and the inner tube is fixedly connected to the stability body by a plurality of connecting blocks, a rotating tube is passed through the interior of the plurality of connecting blocks, and a plurality of evenly distributed jacking blocks are fixedly provided on the tube wall of the rotating tube, a plurality of evenly distributed mounting grooves are opened on the outer wall of the stability body, and a fixing sleeve is provided inside the mounting groove, the roller is rotatably arranged inside the fixing sleeve, a spring is fixedly provided between the side wall of the fixing sleeve and the mounting groove, a jacking rod contacting the jacking block is fixedly provided on the side wall of the fixing sleeve, one end of the rotating tube extends to the outside of the stability body, mounting rings are fixedly provided at one end of the stability body and on both sides of the rotating tube, and bolts for fixing the rotating tube are provided inside the mounting ring.

[0009] Preferably, the push block is a triangular block, one end of the push rod is a circular end, and one end of the push rod is arranged in contact with the inclined surface of the push block.

[0010] Preferably, a plurality of evenly distributed screw holes are formed around the tube wall of the rotating tube, and the ends of the bolts cooperate with the screw holes to fix the rotating tube.

[0011] Preferably, a closed cavity is formed between the inner wall of the stability body and the inner tube, and the inner wall of the inner tube is provided with an internal thread.

[0012] Furthermore, two shifting rods are symmetrically fixedly provided on one end of the rotating tube located outside the stability body.

[0013] Preferably, the stability body, roller and inner tube are all made of alloy.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. The utility model is provided with a rotating tube, a pushing block, a fixing sleeve, a spring and a pushing rod. The rotating tube is rotated by hand so that a plurality of pushing blocks respectively push a plurality of pushing rods. The pushing rods can drive the fixing sleeve and the roller to move out from the inside of the installation groove. When the inclined surface of the pushing block does not push the pushing rod, the spring acts to retract the fixing sleeve and the roller into the inside of the installation groove, so that the length of the roller outside the stability body can be adjusted, thereby being suitable for wellbores with different diameters.

[0016] 2. The utility model is provided with a mounting ring and a bolt. After the rotating tube is rotated by hand, the bolt is loosened so that the end of the bolt cooperates with the screw holes at different positions, thereby fixing the position of the rotating tube, fixing the position of the roller on the stability body, and increasing the strength of the roller when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For the utility model Figure 1 A cross-sectional view of

[0020] Figure 3 For the utility model Figure 1 Schematic diagram of the transfer tube structure.

[0021] Description of reference numerals:

[0022] 1. Stability body; 2. Roller; 3. Inner tube; 4. Connecting block; 5. Rotating tube; 6. Pushing block; 7. Fixing sleeve; 8. Spring; 9. Pushing rod; 10. Mounting ring; 11. Bolt; 12. Screw hole; 13. Push rod. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] The utility model embodiment discloses a hard rock alloy casing rigid stabilizer.

[0025] The utility model provides Figure 1-2 A hard rock alloy casing rigid stabilizer shown in the figure comprises a stability body 1 and a roller 2, an inner tube 3 is arranged inside the stability body 1, a closed cavity is formed between the inner wall of the stability body 1 and the inner tube 3, an inner wall of the inner tube 3 is provided with an internal thread, the stability body 1, the roller 2 and the inner tube 3 are all made of alloy parts, the alloy material has high rigidity and long service life, the inner tube 3 and the stability body 1 are fixedly connected by a plurality of connecting blocks 4, a rotating tube 5 is passed through the interior of the plurality of connecting blocks 4, and a plurality of evenly distributed jacking blocks 6 are fixedly arranged on the tube wall of the rotating tube 5, a plurality of evenly distributed installation grooves are opened on the outer wall of the stability body 1, and a fixing sleeve 7 is arranged inside the installation groove, the roller 2 is rotatably arranged inside the fixing sleeve 7, and a fixing sleeve 7 is arranged between the side wall of the fixing sleeve 7 and the installation groove A spring 8 is fixedly provided, and a push rod 9 which is in contact with the push block 6 is fixedly provided on the side wall of the fixed sleeve 7. The push block 6 is a triangular block, and one end of the push rod 9 is a circular end head, and one end of the push rod 9 is in contact with the inclined surface of the push block 6. One end of the rotating tube 5 extends to the outside of the stability body 1. When the position of the roller 2 needs to be adjusted, the rotating tube 5 is rotated by hand so that multiple push blocks 6 push multiple push rods 9 respectively. The push rod 9 can drive the fixed sleeve 7 and the roller 2 to move out from the inside of the installation groove. When the inclined surface of the push block 6 does not push the push rod 9, the spring 8 retracts the fixed sleeve 7 and the roller 2 into the inside of the installation groove, so that the length of the roller 2 outside the stability body 1 can be adjusted, so that it can be suitable for wellbores of different diameters.

[0026] In order to fix the position of the rotating tube 5, Figure 1 and 3As shown, a mounting ring 10 is fixedly provided at one end of the stability body 1 and on both sides of the rotating tube 5, and a bolt 11 for fixing the rotating tube 5 is provided inside the mounting ring 10. A plurality of evenly distributed screw holes 12 are opened around the tube wall of the rotating tube 5. The ends of the bolts 11 cooperate with the screw holes 12 to fix the rotating tube 5. The bolts 11 are loosened with a wrench so that the ends of the bolts 11 cooperate with the screw holes 12 at different positions, thereby fixing the position of the rotating tube 5, fixing the position of the roller 2 on the stability body 1, and increasing the strength of the roller 2 when used.

[0027] Finally, in order to facilitate manual rotation of the rotating tube 5, as shown in FIG. Figure 1 and 3 As shown, two levers 13 are symmetrically fixedly provided at one end of the rotating tube 5 located outside the stability body 1 .

[0028] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hard rock alloy casing rigid stabilizer, comprising a stabilizer body (1) and a roller (2), characterized in that: An inner tube (3) is provided inside the stability body (1), and the inner tube (3) is fixedly connected to the stability body (1) via a plurality of connecting blocks (4). A rotating tube (5) is passed through the interior of the plurality of connecting blocks (4), and a plurality of evenly distributed push blocks (6) are fixedly provided on the tube wall of the rotating tube (5). An outer wall of the stability body (1) is provided with a plurality of evenly distributed installation grooves, and a fixing sleeve (7) is provided inside the installation groove. The roller (2) is rotatably arranged inside the fixing sleeve (7), a spring (8) is fixedly provided between the side wall of the fixing sleeve (7) and the installation groove, and a push rod (9) is fixedly provided on the side wall of the fixing sleeve (7) and is arranged in contact with the push block (6). One end of the rotating tube (5) extends to the outside of the stability body (1), and a mounting ring (10) is fixedly provided at one end of the stability body (1) and on both sides of the rotating tube (5), and a bolt (11) for fixing the rotating tube (5) is provided inside the mounting ring (10).

2. The hard rock alloy casing rigid stabilizer according to claim 1, characterized in that: The push block (6) is a triangular block, one end of the push rod (9) is a circular end, and one end of the push rod (9) is arranged in contact with the inclined surface of the push block (6).

3. The hard rock alloy casing rigid stabilizer according to claim 1, characterized in that: A plurality of evenly distributed screw holes (12) are formed around the wall of the rotating tube (5), and the ends of the bolts (11) cooperate with the screw holes (12) to fix the rotating tube (5).

4. The hard rock alloy casing rigid stabilizer according to claim 1, characterized in that: A closed cavity is formed between the inner wall of the stability body (1) and the inner tube (3), and the inner wall of the inner tube (3) is provided with an internal thread.

5. The hard rock alloy casing rigid stabilizer according to claim 1, characterized in that: Two shifting rods (13) are symmetrically fixedly disposed on one end of the rotating tube (5) located outside the stability body (1).

6. The hard rock alloy casing rigid stabilizer according to claim 1, characterized in that: The stability body (1), the roller (2) and the inner tube (3) are all made of alloy parts.

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