Non-magnetic drill collar with high toughness and pressure resistance

Abstract

The utility model relates to the technical field of tough pressure-resistant non-magnetic drill collars, and provides a tough pressure-resistant non-magnetic drill collar which comprises a drilling device, a mounting slot is formed in the lower surface of the drilling device, a reinforcing rib is fixedly connected in the mounting slot, the other end of the reinforcing rib is fixedly connected with a supporting plate, and the supporting plate is fixedly connected with the lower surface of the drilling device. A non-magnetic drill collar body is arranged on the lower side of the supporting plate, two cavities are formed in the inner wall of the drilling equipment, first springs are fixedly connected into the cavities, arc-shaped blocks are fixedly connected to the other ends of the first springs, arc-shaped grooves are formed in the positions, facing the arc-shaped blocks, of the non-magnetic drill collar body, and the arc-shaped blocks are inserted into the arc-shaped grooves. The non-magnetic drill collar body is inserted into drilling equipment, the drill collar equipment pushes the arc-shaped block into the cavity during insertion, and when the non-magnetic drill collar body moves to a proper position, the arc-shaped block is pushed into the arc-shaped groove under the action of resilience force of the first spring, so that the position of the non-magnetic drill collar body is fixed; and the non-magnetic drill collar body is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of non-magnetic drill collars with high toughness and pressure resistance, and specifically relates to a non-magnetic drill collar with high toughness and pressure resistance. Background Art

[0002] Non-magnetic drill collar is a low-carbon high-chromium manganese alloy steel drill collar, which is refined through strict chemical composition ratio and has good low magnetic permeability and high-strength mechanical properties. Non-magnetic drill collar can be used as oil drilling tools. Since all magnetic measuring instruments sense the geomagnetic field of the wellbore when measuring the direction of the wellbore, the measuring instrument must be in a non-magnetic environment. However, during the drilling process, the drill tool is often magnetic and has a magnetic field, which affects the magnetic measuring instrument and cannot obtain the correct wellbore trajectory measurement information data. Non-magnetic drill collar can be used to implement a non-magnetic environment and has the characteristics of drill collars in drilling. However, most of the existing oil drill collars are installed by welding or flange. They cannot be disassembled during use or require a large number of fasteners. The installation is time-consuming and labor-intensive, which is not conducive to the operator's later replacement and maintenance of the drill collar. Summary of the invention

[0003] The utility model provides a non-magnetic drill collar with high toughness and pressure resistance, which solves the problem of a non-magnetic drill collar with high toughness and pressure resistance in the related technology.

[0004] The technical solution of the utility model is as follows: a non-magnetic drill collar with high toughness and pressure resistance, characterized in that it includes a drilling device, a mounting slot is opened on the lower surface of the drilling device, a reinforcing rib is connected and fixed in the mounting slot, a support plate is connected and fixed at the other end of the reinforcing rib, a non-magnetic drill collar body is arranged on the lower side of the support plate, and the non-magnetic drill collar body is inserted in the mounting slot;

[0005] Two cavities are provided on the inner wall of the drilling equipment, a first spring is connected and fixed in the cavity, an arc block is connected and fixed to the other end of the first spring, the arc block is slidably connected to the drilling equipment, an arc groove is provided on the position of the non-magnetic drill collar body facing the arc block, and the arc block is inserted in the arc groove.

[0006] Furthermore, a first pull rod is connected and fixed to one side of the arc block facing away from the non-magnetic drill shank body, an end of the first pull rod facing away from the arc block passes through the drilling equipment and is rotatably connected to the second pull rod, the second pull rod is arranged on the outside of the drilling equipment, a vertical placement groove that cooperates with the second pull rod is provided on the outer surface of the drilling equipment, a vertical groove is provided at the position of the drilling equipment at which the second pull rod is located, a second spring is connected and fixed in the vertical groove, and a slider is connected and fixed to the other end of the second spring.

[0007] Furthermore, a diamond drill bit is connected and fixed to the lower surface of the non-magnetic drill collar body, and an annular groove is provided in the middle position of the lower surface of the non-magnetic drill collar body.

[0008] Furthermore, a connecting rod is rotatably connected in the annular groove, and a rotating plate is fixedly connected to the lower surface of the connecting rod.

[0009] Furthermore, a shock-absorbing pad is connected and fixed to the lower surface of the support plate, and the lower surface of the shock-absorbing pad is in contact with the non-magnetic drill collar body.

[0010] Furthermore, a spiral groove is processed on the outer peripheral surface of the non-magnetic drill collar body.

[0011] The working principle and beneficial effects of the utility model are:

[0012] 1. In the utility model, the non-magnetic drill collar body is inserted into the drilling equipment. During the insertion, the drill collar equipment pushes the arc block into the cavity to contract the first spring. When the non-magnetic drill collar body moves to a suitable position, the arc block is pushed into the arc groove under the action of the rebound force of the first spring, thereby fixing its position. It is convenient and quick. When disassembly is required, the second pull rod can be rotated to make it flush with the first pull rod, and the second pull rod can be pulled to move the arc block into the cavity, and then the non-magnetic drill collar body can be removed. The insertion and fixing method is adopted, which facilitates the disassembly and installation of the non-magnetic drill collar body and reduces the labor intensity of the operator.

[0013] 2. In the utility model, the lower surface of the non-magnetic drill collar body is rotatably connected to the rotating plate. When the non-magnetic drill collar body is drilling, the rotating plate can be rotated by inertia to push the soil to both sides, thereby reducing the resistance of the drilling hole and avoiding soil accumulation and increasing resistance in the annular groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of middle;

[0018] In the figure:

[0019] 1. Drilling equipment; 2. Installing slot; 3. Non-magnetic drill collar body; 4. Reinforcing ribs; 5. Support plate; 6. Arc block; 7. First spring; 8. First pull rod; 9. Second pull rod; 10. Second spring; 11. Slider; 12. Placement slot; 13. Diamond drill bit; 14. Rotating plate; 15. Connecting rod; 16. Shock-absorbing pad; 17. Spiral groove. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, a non-magnetic drill collar with high toughness and pressure resistance is characterized in that it includes a drilling device 1, a mounting slot 2 is opened on the lower surface of the drilling device 1, a reinforcing rib 4 is connected and fixed in the mounting slot 2, the other end of the reinforcing rib 4 is connected and fixed to a support plate 5, a non-magnetic drill collar body 3 is arranged on the lower side of the support plate 5, the non-magnetic drill collar body 3 is inserted in the mounting slot 2, two cavities are opened on the inner wall of the drilling device 1, a first spring 7 is connected and fixed in the cavity, the other end of the first spring 7 is connected and fixed to an arc block 6, the arc block 6 is slidably connected to the drilling device 1, and the non-magnetic An arc groove is provided on the drill collar body 3 facing the arc block 6, and the arc block 6 is inserted in the arc groove. A first pull rod 8 is connected and fixed to a side of the arc block 6 facing away from the non-magnetic drill collar body 3. An end of the first pull rod 8 facing away from the arc block 6 passes through the drilling equipment 1 and is rotatably connected to the second pull rod 9. The second pull rod 9 is arranged on the outside of the drilling equipment 1. A vertical placement groove 12 that cooperates with the second pull rod 9 is provided on the outer surface of the drilling equipment 1. A shock-absorbing pad 16 is connected and fixed to the lower surface of the support plate 5, and the lower surface of the shock-absorbing pad 16 fits with the non-magnetic drill collar body 3.

[0022] In the utility model, the non-magnetic drill collar body 3 is inserted into the drilling device 1. During the insertion, the drill collar device pushes the arc block 6 into the cavity to shrink the first spring 7. When the non-magnetic drill collar body 3 moves to a suitable position, the arc block 6 is pushed into the arc groove under the action of the rebound force of the first spring 7, thereby fixing its position, which is convenient and quick. When disassembly is required, the second pull rod 9 can be rotated to make it flush with the first pull rod 8, and the second pull rod 9 can be pulled to move the arc block 6 into the cavity, and then the non-magnetic drill collar body 3 can be disassembled. The magnetic drill collar body 3 can be removed, and the insertion and fixing method is adopted, which facilitates the disassembly and installation of the non-magnetic drill collar body 3 and reduces the labor intensity of the operator. When the non-magnetic drill collar body 3 is working, the second pull rod 9 is placed in the placement groove 12, and the second spring 10 loses its holding force. Under the action of the rebound force, the slider 11 is moved upward to limit the second pull rod 9 to avoid sliding out during work. The shock-absorbing pad 16 is added to reduce the vibration of the non-magnetic drill collar body 3 during work and extend the service life. Example

[0023] like Figure 1 and Figure 2 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that a diamond drill bit 13 is connected and fixed to the lower surface of the non-magnetic drill collar body 3, an annular groove is opened in the middle position of the lower surface of the non-magnetic drill collar body 3, a connecting rod 15 is rotatably connected in the annular groove, a rotating plate 14 is connected and fixed to the lower surface of the connecting rod 15, and a spiral groove 17 is processed on the outer peripheral surface of the non-magnetic drill collar body 3.

[0024] The diamond drill bit 13 is added in the utility model, so that the toughness of the non-magnetic drill collar body 3 can be increased to avoid encountering hard materials such as stones that hinder the work. The lower surface of the non-magnetic drill collar body 3 is rotatably connected to the rotating plate 14. When the non-magnetic drill collar body 3 is drilling, the rotating plate 14 can be rotated by inertia to push the soil to both sides, thereby reducing the resistance of the drilling hole and avoiding soil accumulation and increasing resistance in the annular groove. In addition, the outer peripheral surface of the non-magnetic drill collar body 3 is processed with a spiral groove 17, so that the soil can be moved upward and removed from the borehole under the rotation of the spiral groove 17, thereby reducing the amount of soil in the borehole and reducing the resistance.

[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-magnetic drill collar with high toughness and high pressure resistance, characterized in that: The drilling device (1) comprises a mounting slot (2) formed on the lower surface of the drilling device (1), a reinforcing rib (4) being connected and fixed inside the mounting slot (2), a supporting plate (5) being connected and fixed at the other end of the reinforcing rib (4), a non-magnetic drill collar body (3) being arranged on the lower side of the supporting plate (5), and the non-magnetic drill collar body (3) being inserted into the mounting slot (2); The inner wall of the drilling device (1) is provided with two cavities, a first spring (7) is connected and fixed in the cavity, the other end of the first spring (7) is connected and fixed with an arc block (6), the arc block (6) is slidably connected to the drilling device (1), the non-magnetic drill collar body (3) is provided with an arc groove at a position facing the arc block (6), and the arc block (6) is inserted in the arc groove.

2. A non-magnetic drill collar with high toughness and high pressure resistance according to claim 1, characterized in that: A first pull rod (8) is connected and fixed to a side of the arc block (6) facing away from the non-magnetic drill collar body (3); one end of the first pull rod (8) facing away from the arc block (6) passes through the drilling device (1) and is rotatably connected to the second pull rod (9); the second pull rod (9) is arranged on the outside of the drilling device (1); a vertical placement groove (12) cooperating with the second pull rod (9) is provided on the outer surface of the drilling device (1); a vertical groove is provided at the position of the second pull rod (9) of the drilling device (1); a second spring (10) is connected and fixed in the vertical groove; and a slider (11) is connected and fixed to the other end of the second spring (10).

3. A non-magnetic drill collar with high toughness and high pressure resistance according to claim 1, characterized in that: A diamond drill bit (13) is connected and fixed to the lower surface of the non-magnetic drill collar body (3), and an annular groove is provided in the middle of the lower surface of the non-magnetic drill collar body (3).

4. A non-magnetic drill collar with high toughness and high pressure resistance according to claim 3, characterized in that: A connecting rod (15) is rotatably connected in the annular groove, and a rotating plate (14) is fixedly connected to the lower surface of the connecting rod (15).

5. A non-magnetic drill collar with high toughness and high pressure resistance according to claim 1, characterized in that: A shock-absorbing pad (16) is connected and fixed to the lower surface of the support plate (5), and the lower surface of the shock-absorbing pad (16) is in contact with the non-magnetic drill collar body (3).

6. A tough and pressure-resistant non-magnetic drill collar according to claim 1, characterized in that: A spiral groove (17) is machined on the outer peripheral surface of the non-magnetic drill collar body (3).

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