A directional drilling structure

Abstract

This utility model discloses a directional drilling structure, including a square tube with symmetrically arranged strip-shaped grooves on its sidewalls. Drilling structures are installed within these grooves, and the outer sides of the two drilling structures are fixedly connected to the inner wall of the square tube. During directional drilling, the drilling structures provide orientation, while simultaneously providing clamping force via hydraulic cylinders. These structures also have a spacing adjustment function, ensuring smooth rotation while clamping the drill rod. When the drill rod needs to be removed, a servo motor is installed. The servo motor provides power to the arc-shaped rotating roller, assisting in the upward removal of the drill rod and providing stable drilling guidance. It also provides sufficient limiting to avoid difficulties in drilling bare holes. During directional drilling, an annular plate is also installed at the top of the square tube to limit the top of the drill rod, ensuring it is centered and that the directional drilling proceeds in the designed direction.

Description

Technical Field

[0001] This utility model relates to the field of directional drilling technology, specifically to a directional drilling structure. Background Technology

[0002] In the 1920s, the oil and gas industry began exploring directional drilling to develop multi-branch wells and horizontal wells to increase single-well production. In 1929, California, USA, successfully implemented directional drilling technology for the first time, marking its practical application. It has since gradually become mainstream. Directional drilling is a technique that involves controlling the drill bit's trajectory to drill holes in a non-vertical direction underground. Its core objective is to achieve precise borehole path design to address complex geological conditions or specific engineering needs.

[0003] Ensuring the progress and quality of drilling operations under complex geological conditions is both a key focus and a major challenge. Weak and fractured rock formations are prone to borehole collapse and drill bit seizure during composite and sliding drilling processes, making open-hole drilling difficult and increasing the risk of drill bit seizure and burial accidents. Maintaining the directional drilling section after completion is also challenging. During directional drilling, the heterogeneity of the formation makes accurate directional drilling along the designed direction difficult. During construction, issues such as pipe jamming and burial may occur during pipe transport, preventing successful pipe installation. All of these problems will impact the project schedule, trajectory, and may even lead to borehole abandonment. Utility Model Content

[0004] The purpose of this invention is to provide a directional drilling structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a directional drilling structure, comprising a square tube, wherein the sidewall of the square tube is symmetrically provided with strip-shaped through grooves, and a drilling structure is provided in the strip-shaped through grooves of the square tube, wherein the outer sides of the two drilling structures are fixedly connected to the inner wall of the square tube.

[0006] Preferably, the drilling structure includes two hydraulic cylinders arranged symmetrically. The outer walls of the two hydraulic cylinders are fixedly connected to the inner wall of the square tube. A concave frame is fixedly connected to the other side of the hydraulic cylinder. An arc-shaped roller is rotatably connected to the inner wall of the concave frame. Side blocks are symmetrically fixedly connected to the outer side of the concave frame. The outer wall of the side block is fitted with the strip-shaped through groove of the square tube with clearance. The center of the side block is hollow. A servo motor is provided on the outer wall of one side block. The outer wall of the servo motor is fixedly connected to the side block by bolts. The center of the servo motor passes through the center of the side block, and the shaft of the servo motor is connected to the shaft of the arc-shaped roller.

[0007] Preferably, the lower surface of the square tube is symmetrically fixedly connected with positioning stakes, and the number of positioning stakes is six, arranged in two rows sequentially.

[0008] Preferably, the outer side wall of the square tube is symmetrically fixedly connected with side plates, and the upper surface of the side plates is symmetrically fixedly connected with lifting rings.

[0009] Preferably, a bent plate is fixedly connected to one side of the upper surface of the square tube. The bent plate is in the shape of a right angle, and a circular ring plate is fixedly connected to the other end of the bent plate. The bottom of the circular ring plate corresponds to the top of the center of the drilling structure.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: During directional drilling, the drilling structure provides orientation, and at the same time, the drilling structure provides clamping force through a hydraulic cylinder and has the function of spacing adjustment. It maintains smooth rotation while clamping the drill rod. When it is necessary to remove the drill rod, a servo motor is installed. The servo motor can provide power to the arc-shaped roller. The rotation of the servo motor provides assistance for removing the drill rod upward, provides stable drilling guidance, and provides sufficient limit to avoid difficulties in drilling bare holes. During directional drilling, an annular plate is also set at the top of the square tube to provide limit for the top of the drill rod, ensuring that it is located in the center and ensuring that directional drilling proceeds in the designed direction. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 for Figure 1 Structural cross-sectional view of the Chinese-style tube;

[0013] Figure 3 for Figure 1 Detailed structural diagram of the drilling structure;

[0014] Figure 4 for Figure 3 Detailed structural diagram of the concave frame;

[0015] Figure 5 for Figure 3 Front sectional view of the middle side block;

[0016] In the diagram: 1. Square tube; 2. Drilling structure; 21. Concave frame; 22. Hydraulic cylinder; 23. Arc-shaped roller; 24. Side block; 25. Servo motor; 26. Bolt; 3. Positioning pile; 4. Side plate; 5. Lifting ring; 6. Bend plate; 7. Circular ring plate. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-5 This utility model provides a directional drilling structure, including a square tube 1. The side wall of the square tube 1 is symmetrically provided with strip-shaped through grooves. Drilling structures 2 are provided in the strip-shaped through grooves of the square tube 1. The outer sides of the two drilling structures 2 are fixedly connected to the inner wall of the square tube 1.

[0019] The drilling structure 2 includes two hydraulic cylinders 22, which are symmetrically arranged. The outer walls of the two hydraulic cylinders 22 are fixedly connected to the inner wall of the square tube 1. A concave frame 21 is fixedly connected to the other side of the hydraulic cylinders 22. An arc-shaped roller 23 is rotatably connected to the inner wall of the concave frame 21. Side blocks 24 are symmetrically fixedly connected to the outer side of the concave frame 21. The outer wall of the side block 24 is fitted with the strip-shaped through groove of the square tube 1 with clearance. The center of the side block 24 is hollow. A servo motor 25 is provided on the outer wall of one side block 24. The outer wall of the servo motor 25 is fixedly connected to the side block 24 by bolts. The center of the servo motor 25 passes through the center of the side block 24, and the shaft of the servo motor 25 is connected to the shaft of the arc-shaped roller 23.

[0020] The lower surface of the square tube 1 is symmetrically and fixedly connected with six positioning stakes 3, which are arranged in two rows.

[0021] Side plates 4 are symmetrically fixedly connected to the outer side wall of the square tube 1, and lifting rings 5 ​​are symmetrically fixedly connected to the upper surface of the side plates 4.

[0022] A bent plate 6 is fixedly connected to one side of the upper surface of the square tube 1. The bent plate 6 is right-angled. A circular ring plate 7 is fixedly connected to the other end of the bent plate 6. The bottom of the circular ring plate 7 corresponds to the top of the center of the drilling structure 2.

[0023] Working principle: During directional drilling, the position of the square tube 1 is pre-moved by the lifting ring 5 on the surface of the lifting side plate 4. The square tube 1 is then placed at the drilling site and inserted into the soil by the positioning pile 3 at the bottom of the square tube 1. At the same time, the spacing of the internal drilling structure 2 is set. The drilling structure 2 provides clamping force through two symmetrical hydraulic cylinders 22. The hydraulic cylinders 22 on both sides can push the concave frame 21 inward. The inner side of the concave frame 21 is equipped with a rotatable arc-shaped roller 23, which maintains smooth rotation while clamping the drill rod. At the same time, a side block 24 is set on the outer side of the concave frame 21. The side block 24 can be fitted into the strip-shaped through groove of the square tube 1. The sliding mechanism provides stable movement on both sides of the concave frame 21. A servo motor 25 is also provided on the outer wall of the side block 24. When the drill rod needs to be removed, the servo motor 25 is installed by bolts 26. The shaft of the servo motor 25 will contact the shaft of the arc-shaped roller 23. The rotation of the servo motor 25 provides assistance for removing the drill rod upward. The drilling structure 2 is symmetrically arranged, providing stable drilling guidance and sufficient limit to avoid difficulties in drilling the bare hole. During directional drilling, a bent plate 6 is also provided at the top of the square tube 1 to connect the annular plate 7, providing a limit for the top of the drill rod to ensure that it is located in the center and to ensure that the directional drilling proceeds in the designed direction.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A directional drilling structure, characterized in that: The square tube (1) has symmetrically provided strip-shaped through grooves on its sidewalls. Drilling structures (2) are provided in the strip-shaped through grooves of the square tube (1). The outer sides of the two drilling structures (2) are fixedly connected to the inner wall of the square tube (1).

2. The directional drilling structure according to claim 1, characterized in that: The drilling structure (2) includes two hydraulic cylinders (22), which are symmetrically arranged. The outer walls of the two hydraulic cylinders (22) are fixedly connected to the inner wall of the square tube (1). A concave frame (21) is fixedly connected to the other side of the hydraulic cylinder (22). An arc-shaped roller (23) is rotatably connected to the inner wall of the concave frame (21). Side blocks (24) are symmetrically fixedly connected to the outer side of the concave frame (21). The outer wall of the side block (24) is fitted with the strip groove of the square tube (1) with clearance. The center of the side block (24) is hollow. A servo motor (25) is provided on the outer wall of one side of the side block (24). The outer wall of the servo motor (25) is fixedly connected to the side block (24) by bolts. The center of the servo motor (25) passes through the center of the side block (24), and the shaft of the servo motor (25) is connected to the shaft of the arc-shaped roller (23).

3. The directional drilling structure according to claim 1, characterized in that: The lower surface of the square tube (1) is symmetrically fixedly connected with positioning stakes (3), and there are six positioning stakes (3) arranged in two rows.

4. The directional drilling structure according to claim 1, characterized in that: The outer side wall of the square tube (1) is symmetrically fixedly connected with a side plate (4), and the upper surface of the side plate (4) is symmetrically fixedly connected with a lifting ring (5).

5. The directional drilling structure according to claim 1, characterized in that: A bent plate (6) is fixedly connected to one side of the upper surface of the square tube (1). The bent plate (6) is in the shape of a right angle. A circular ring plate (7) is fixedly connected to the other end of the bent plate (6). The bottom of the circular ring plate (7) corresponds to the top of the center of the drilling structure (2).

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