Non-magnetic drill collar with anti-falling structure

Abstract

The utility model relates to the technical field of non-magnetic drill collars with anti-falling structures, and provides a non-magnetic drill collar with an anti-falling structure, which comprises drilling equipment, a mounting slot is arranged on the lower surface of the drilling equipment, a drill collar body is arranged in the mounting slot, the upper surface of the drill collar body is in threaded connection with a connecting column, and the connecting column is in threaded connection with the drilling equipment. A cavity is formed in the end, away from the drill collar body, of the connecting column, a spring is fixedly connected into the cavity, a clamping block is fixedly connected to the other end of the spring, a sliding groove is formed in the inner wall of the drilling equipment, the drill collar body is in threaded connection with the connecting column, and the connecting column is inserted into the drilling equipment. The inclined faces of the clamping blocks are extruded to enter the cavities, then the clamping blocks are pushed into the sliding grooves through resilience force of the springs, and therefore installation of the drill collar body is completed, the reinforcing ribs can be pushed due to insertion of the drill collar body, the connecting columns and the drill collar body are pushed in the opposite directions, and the connecting positions of the connecting columns and the drill collar body are reinforced; and further, the drill collar body can continuously drill holes.

Description

Technical Field

[0001] The utility model relates to the technical field of non-magnetic drill collars with an anti-drop structure, and specifically relates to a non-magnetic drill collar with an anti-drop structure. Background Art

[0002] Non-magnetic drill collar is a low-carbon, high-chromium-manganese alloy steel drill collar. It is refined through strict chemical composition ratio and has good low magnetic permeability and high-strength mechanical properties. Non-magnetic drill collar is mainly used to determine the direction of the wellbore during directional well drilling. At the same time, it creates a non-magnetic environment for magnetic measuring instruments during the directional process to ensure that the data measured by the magnetic measuring instruments is the real earth's magnetic field information.

[0003] During the oil drilling construction process, as the drilling depth increases, the contact area between the non-magnetic drill collar and the well wall increases. When the non-magnetic drill collar slides directionally during drilling, the friction between the non-magnetic drill collar and the well wall also increases, causing the non-magnetic drill collar to be subject to greater resistance. When the resistance is large, the drilling equipment may move, but the non-magnetic drill collar may not move, making the connection prone to the risk of breakage, thereby affecting the continuous drilling of the well and the progress of the corresponding project. Summary of the invention

[0004] The utility model provides a non-magnetic drill collar with an anti-drop structure, which solves the problem of a non-magnetic drill collar with an anti-drop structure in the related art.

[0005] The technical solution of the utility model is as follows: a non-magnetic drill collar with an anti-drop structure, comprising a drilling device, a mounting slot is provided on the lower surface of the drilling device, a drill collar body is arranged in the mounting slot, a connecting column is threadedly connected to the upper surface of the drill collar body, two cavities are provided on the end of the connecting column away from the drill collar body, a spring is connected and fixed in the cavity, a clamping block is connected and fixed at the other end of the spring, a sliding groove cooperating with the clamping block is provided on the inner wall of the drilling device, the clamping block is inserted in the sliding groove, a sliding plate is attached to the upper surface of the drill collar body, a side of the sliding plate away from the drill collar body is connected and fixed with a plurality of reinforcing ribs, and the end of the reinforcing rib away from the sliding plate is connected and fixed to the drilling device.

[0006] Furthermore, two guide rods are connected and fixed to the outer peripheral surface of the drill shank body, two guide holes are provided on the lower surface of the drilling equipment, the guide rods are inserted into the guide holes, a threaded column is threadedly connected to the outer peripheral surface of the drilling equipment, a threaded hole is provided on the guide rod, and the threaded column is threadedly connected to the guide rod.

[0007] Furthermore, the upper surface of the drill collar body and the lower surface of the sliding plate are both processed into tooth shapes, and the drill collar body and the sliding plate are meshed and attached to each other.

[0008] Furthermore, a plurality of spiral grooves are processed on the outer peripheral surface of the drill collar body.

[0009] Furthermore, a plurality of stone crushing feet for crushing stones are connected and fixed to the lower end of the drill collar body.

[0010] The working principle and beneficial effects of the utility model are:

[0011] 1. In the utility model, the drill collar body is threadedly connected to the connecting column, the connecting column is inserted into the drilling equipment, the inclined surface of the clamping block is squeezed into the cavity, and then the clamping block is pushed into the slide groove by the rebound force of the spring, thereby completing the installation of the drill collar body. During installation, the reinforcing ribs will be pushed due to the insertion of the drill collar body, so that the connecting column and the drill collar body are pushed in the opposite direction, thereby increasing stability, strengthening the connection, ensuring the stability among the drilling equipment, the drill collar body and the connecting column, avoiding the drill collar body from falling, and allowing the drill collar body to continue drilling.

[0012] 2. In the utility model, by adding a guide rod, the drill collar body can be better connected to the drilling equipment, and the situation that the block and the slide groove are not on the same horizontal line and cannot be inserted is avoided. The threaded column is screwed in to connect and fix the guide rod to the drilling equipment, thereby increasing the stability between the drill collar body and the drilling equipment and preventing the drill collar body from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

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

[0015] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0016] Figure 3 It is a cross-sectional view of the drill collar body in the structure of the utility model;

[0017] Figure 4 It is a cross-sectional view of the connecting column in the structure of the utility model;

[0018] In the figure: 1. Drilling equipment; 2. Drill collar body; 3. Connecting column; 4. Spring; 5. Block; 6. Cavity; 7. Reinforcement rib; 8. Sliding plate; 9. Guide rod; 10. Threaded column; 11. Threaded hole; 12. Spiral groove; 13. Gravel foot. DETAILED DESCRIPTION

[0019] 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

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a non-magnetic drill collar with an anti-drop structure comprises a drilling device 1, a mounting slot is provided on the lower surface of the drilling device 1, a drill collar body 2 is arranged in the mounting slot, a connecting column 3 is threadedly connected to the upper surface of the drill collar body 2, two cavities 6 are provided at the end of the connecting column 3 away from the drill collar body 2, a spring 4 is connected and fixed in the cavity 6, a clamping block 5 is connected and fixed at the other end of the spring 4, a sliding groove cooperating with the clamping block 5 is provided on the inner wall of the drilling device 1, the clamping block 5 is inserted in the sliding groove, a sliding plate 8 is attached to the upper surface of the drill collar body 2, the upper surface of the drill collar body 2 and the lower surface of the sliding plate 8 are both processed into teeth, the drill collar body 2 is meshed with the sliding plate 8, a side of the sliding plate 8 away from the drill collar body 2 is connected and fixed with a plurality of reinforcing ribs 7, and the end of the reinforcing rib 7 away from the sliding plate 8 is connected and fixed to the drilling device 1.

[0021] The present invention provides that the drill collar body 2 is threadedly connected with the connecting column 3, and the connecting column 3 is inserted into the drilling device 1. The inclined surface of the block 5 is squeezed into the cavity 6, and then the block 5 is pushed into the slide groove by the resilience of the spring 4, thereby completing the installation of the drill collar body 2. During the installation, the reinforcing rib 7 will be pushed due to the insertion of the drill collar body 2, so that the connecting column 3 and the drill collar body 2 are pushed in the opposite direction, thereby increasing the stability and strengthening the connection, ensuring the stability among the drilling device 1, the drill collar body 2 and the connecting column 3, avoiding the drill collar body 2 from falling, and thus allowing the drill collar body 2 to continue drilling. The upper surface of the drill collar body 2 and the lower surface of the sliding plate 8 are both processed into tooth shapes to increase the contact area, thereby ensuring that when the drilling device 1 is drilling, the drilling device 1 is in motion and the drill collar body 2 is not moving. Example

[0022] like Figure 1 , Figure 2 and Figure 3As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that two guide rods 9 are connected and fixed to the outer peripheral surface of the drill collar body 2, two guide holes are provided on the lower surface of the drilling equipment 1, the guide rods 9 are inserted in the guide holes, the outer peripheral surface of the drilling equipment 1 is threadedly connected with a threaded column 10, a threaded hole 11 is provided on the guide rod 9, the threaded column 10 is threadedly connected to the guide rod 9, a plurality of spiral grooves 12 are processed on the outer peripheral surface of the drill collar body 2, and a plurality of stone crushing feet 13 for crushing stones are connected and fixed to the lower end of the drill collar body 2.

[0023] In the utility model, by adding the guide rod 9, the drill collar body 2 and the drilling equipment 1 can be better connected, and the situation that the block 5 and the slide groove are not on the same horizontal line and cannot be inserted is avoided. The threaded column 10 is screwed in to connect and fix the guide rod 9 to the drilling equipment 1, thereby increasing the stability between the drill collar body 2 and the drilling equipment 1 and avoiding the drill collar body 2 from falling. In addition, a spiral groove 12 is processed on the outer peripheral surface of the drill collar body 2, so that the soil can move upward from the spiral groove 12 to reduce resistance. A gravel foot 13 is connected and fixed at the lower end of the drill collar body 2 to crush the stones in the soil, reduce the grinding of the surface of the drill collar body 2, and extend the service life.

[0024] 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 an anti-drop structure, characterized in that: The invention comprises a drilling device (1), wherein a mounting slot is provided on the lower surface of the drilling device (1), a drill collar body (2) is arranged in the mounting slot, a connecting column (3) is threadedly connected to the upper surface of the drill collar body (2), two cavities (6) are provided on the end of the connecting column (3) away from the drill collar body (2), a spring (4) is connected and fixed in the cavity (6), a clamping block (5) is connected and fixed at the other end of the spring (4), a sliding groove cooperating with the clamping block (5) is provided on the inner wall of the drilling device (1), the clamping block (5) is inserted in the sliding groove, a sliding plate (8) is attached to the upper surface of the drill collar body (2), a surface of the sliding plate (8) away from the drill collar body (2) is connected and fixed with a plurality of reinforcing ribs (7), and the end of the reinforcing rib (7) away from the sliding plate (8) is connected and fixed to the drilling device (1).

2. A non-magnetic drill collar with an anti-drop structure according to claim 1, characterized in that: The outer circumference of the drill collar body (2) is connected and fixed with two guide rods (9), the lower surface of the drilling device (1) is provided with two guide holes, the guide rods (9) are inserted into the guide holes, the outer circumference of the drilling device (1) is threadedly connected with a threaded column (10), the guide rod (9) is provided with a threaded hole (11), and the threaded column (10) is threadedly connected to the guide rod (9).

3. The non-magnetic drill collar with an anti-drop structure according to claim 1, characterized in that: The upper surface of the drill collar body (2) and the lower surface of the sliding plate (8) are both processed into tooth shapes, and the drill collar body (2) and the sliding plate (8) are meshed and attached to each other.

4. The non-magnetic drill collar with an anti-drop structure according to claim 1, characterized in that: The outer peripheral surface of the drill collar body (2) is processed with a plurality of spiral grooves (12).

5. The non-magnetic drill collar with an anti-drop structure according to claim 1, characterized in that: A plurality of stone crushing feet (13) for crushing stones are connected and fixed to the lower end of the drill collar body (2).

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