Hole cleaning device for directional drilling

Abstract

The utility model discloses a directional drilling and hole cleaning device, which belongs to the technical field of drilling devices and comprises a drilling machine base and a drilling and hole cleaning mechanism positioned on the drilling machine base. The hole drilling and cleaning mechanism comprises a hydraulic cylinder installed above the bearing frame, an installation frame connected to the lower portion of the hydraulic cylinder, a motor fixed to the inner side of the installation frame and a drill rod coaxially connected with an output shaft of the motor, a penetrating hole is formed in the top wall of the drilling machine base, and a bottom groove communicated with the penetrating hole is formed in the bottom wall of the drilling machine base. A slurry pump is installed on one side of the top wall of the drilling machine base and connected with an input pipe and an output pipe, and the side, away from the slurry pump, of the output pipe is connected with a concentration tank. According to the directional drilling and hole cleaning device, drilling fluid pumped by the slurry pump is collected in the concentration tank and sprayed to all positions in the annular space of the pipeline and the hole wall through the multiple inclined sprayers at the same time, and the stability of hole cleaning is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling devices, in particular to a directional drilling and hole cleaning device. Background Art

[0002] Underground pipelines are the "lifeline" for the development of a city. With the advancement of my country's urbanization process and the increase in daily sewage flow, the original municipal sewage pipe network can no longer meet the discharge requirements, so it is necessary to increase the sewage pipe network. In the huge project of building a sewage pipe network, it involves the work of drilling and clearing holes underground using drilling and clearing devices.

[0003] In the process of realizing the utility model, the inventors found that there are at least the following problems in the technology: the current drilling and cleaning device, which uses a drill rod to complete the drilling work, needs to inject drilling fluid into the drilled clean hole, but the current injection of drilling fluid is usually only carried out in a "lonely" pipeline, resulting in many positions on the inner wall of the clean hole not being able to receive the drilling fluid, and the drilling fluid cannot fully play its role, resulting in the structure of the clean hole being unstable.

[0004] To this end, we proposed a directional drilling and hole cleaning device to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a directional drilling hole cleaning device, which ensures the stability of hole cleaning by collecting the drilling fluid pumped in by the mud pump in a centralized tank and spraying it to various positions in the annular space of the pipeline and the hole wall through multiple oblique nozzles at the same time, thereby effectively solving the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A directional drilling and hole cleaning device comprises a drilling rig base and a drilling and hole cleaning mechanism located on the drilling rig base, a receiving frame is welded above the drilling rig base, the drilling and hole cleaning mechanism comprises a hydraulic cylinder installed above the receiving frame, a mounting frame connected below the hydraulic cylinder, a motor fixed inside the mounting frame, and a drill rod coaxially connected to an output shaft of the motor, a through hole is formed on the top wall of the drilling rig base, and a bottom groove communicating with the through hole is formed on the bottom wall of the drilling rig base;

[0008] A mud pump is installed on one side of the top wall of the drilling rig base, and an input pipe and an output pipe are connected to the mud pump, wherein the side of the output pipe away from the mud pump is connected to a central tank, and a plurality of inclined nozzles facing the drill pipe are installed on the bottom wall of the central tank, and the plurality of inclined nozzles are distributed in a circular array along the central axis of the drill pipe, and a guide instrument is also installed on the bottom wall of the installation frame.

[0009] As a preferred implementation scheme, the receiving frame is designed in an inverted U shape, and reinforcing plates are welded at the turning points on both sides of the receiving frame, thereby reinforcing the structure of the receiving frame.

[0010] As a preferred embodiment, the installation frame is in a U-shape, wherein the motor is vertically installed on the bottom wall of the inner space of the installation frame; so that the structure of the motor remains stable, and both the motor and the mud pump require power supply from external power facilities.

[0011] As a preferred embodiment, the input pipe passes through the receiving frame on the side away from the mud pump and extends horizontally outward; the input pipe can be connected to the pipeline for conveying drilling fluid from the outside. The drilling fluid is a mixture of clean water + bentonite + a small amount of polymer + treating agent. Bentonite is a commonly used mud material, which is a harmless mud material.

[0012] As a preferred embodiment, two opposite side walls of the centralizing tank are fixedly welded with positioning angles, and both positioning angles are welded to the inner wall of the bottom tank, so that the centralizing tank structure is more stable.

[0013] As a preferred embodiment, the concentration tank is designed to be annular and surrounds the outside of the drill pipe; thus, drilling fluid can be injected into the clean hole drilled by the drill pipe.

[0014] In summary, the technical effects and advantages of the utility model are as follows:

[0015] The directional drilling hole cleaning device collects the drilling fluid pumped in by the mud pump in a centralized tank and sprays it to various positions in the annular space between the pipeline and the hole wall through multiple oblique nozzles at the same time, thereby ensuring the stability of hole cleaning. In addition, the mud also has the functions of carrying drill cuttings, cooling the drill bit, and jet drilling. The drilling fluid also has the functions of suspension and lubrication, which is conducive to the backhaul of the pipeline.

[0016] The directional drilling hole cleaning device returns the drill pipe to its original position after the hole is drilled. At this time, the mud pump is driven to operate, and the drilling fluid is extracted by the input pipe. The drilling fluid enters the concentration tank through the output pipe and diffuses, and then is sprayed out obliquely from multiple oblique nozzles. Thus, the drilling fluid can be injected into the hole from multiple different directions, so that the drilling fluid is more evenly distributed in the hole, and the drilling fluid can be received at various positions on the inner wall of the hole, so that the drilling fluid has a better effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is the front view of the utility model;

[0019] Figure 3 It is a partial vertical cross-sectional view of the utility model;

[0020] Figure 4 For this utility model Figure 3 A magnified view of the structure in the middle.

[0021] In the figure: 1. Drilling rig base; 2. Crawler; 3. Receiver; 4. Reinforcement plate; 5. Hydraulic cylinder; 6. Mounting frame; 7. Motor; 8. Drill rod; 9. Penetration hole; 10. Mud pump; 11. Input pipe; 12. Output pipe; 13. Bottom trough; 14. Concentrating tank; 15. Positioning angle; 16. Guide instrument; 17. Oblique nozzle. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 4 , a directional drilling and cleaning device, comprising a drilling rig base 1 and a drilling and cleaning mechanism located on the drilling rig base 1, crawlers 2 are installed on both sides of the drilling rig base 1, and reference can be made to the crawler-type surface drilling rig in the prior art, a receiving frame 3 is welded above the drilling rig base 1, the receiving frame 3 is designed in an inverted U shape, and reinforcing plates 4 are welded at the turning points on both sides of the receiving frame 3, so as to reinforce the structure of the receiving frame 3, the drilling and cleaning mechanism comprises a hydraulic cylinder 5 installed above the receiving frame 3, a mounting frame 6 connected to the bottom of the hydraulic cylinder 5, a motor 7 fixed to the inner side of the mounting frame 6, and a drill rod 8 coaxially connected to the output shaft of the motor 7, the mounting frame 6 is in a square shape, wherein the motor 7 is vertically installed on the bottom wall of the inner space of the mounting frame 6, so that the structure of the motor 7 remains stable, and the motor 7 and the mud pump 10 both need to be powered by external power facilities, a through hole 9 is formed on the top wall of the drilling rig base 1, and a bottom groove 13 communicating with the through hole 9 is formed on the bottom wall of the drilling rig base 1;

[0024] A mud pump 10 is installed on one side of the top wall of the drilling rig base 1, and the mud pump 10 is connected with an input pipe 11 and an output pipe 12. The input pipe 11 passes through the receiving frame 3 on the side away from the mud pump 10 and extends horizontally outward. The input pipe 11 can be connected to a pipeline for conveying drilling fluid from the outside. The drilling fluid is a mixture of clean water + bentonite + a small amount of polymer + treating agent. Bentonite is a commonly used mud material, which is a harmless mud material. The output pipe 12 is connected to a concentration tank 14 on the side away from the mud pump 10. The concentration tank 14 is annular in design and surrounds the outside of the drill pipe 8, so that the drilling fluid can be injected into the clean hole drilled by the drill pipe 8. The opposite side walls of the concentration tank 14 are fixedly welded with positioning angles 15, and the two positioning angles 15 are welded. It is connected to the inner wall of the bottom groove 13, so that the structure of the concentration tank 14 is more stable. A plurality of oblique nozzles 17 facing the drill pipe 8 are installed on the bottom wall of the concentration tank 14. The plurality of oblique nozzles 17 are distributed in a circular array along the central axis of the drill pipe 8. A guide instrument 16 is also installed on the bottom wall of the installation frame 6. The guide instrument 16 consists of a probe, a surface receiver and a synchronous display. During construction, the accurate position of the guide drill bit and the direction of the inclined surface are determined by the signal transmitter installed in the drill bit chamber and the ground tracking guide instrument 16, and displayed on the synchronous display for the operator to grasp the situation in the hole, so as to operate the drill bit to correct the deviation. In addition to obtaining the position and depth of the underground drill bit, the transmitted signals also include the drill bit inclination angle, the inclined surface face angle, the battery power and the probe temperature.

[0025] The directional drilling and hole cleaning device: when in use, the facility for supplying drilling fluid is connected to the input pipe 11 through a designated pipeline; the driving motor 7 is operated to drive the drill rod 8 to rotate, and the hydraulic cylinder 5 is operated to drive the mounting frame 6, the motor 7 and the drill rod 8 to sink, so as to gradually drill into the corresponding formation to perform hole drilling and hole cleaning work; after the hole is drilled out, the drill rod 8 is returned to its original position, and the mud pump 10 is driven to operate at this time, and the drilling fluid is extracted by the input pipe 11, and the drilling fluid enters the concentration tank 14 through the output pipe 12 and diffuses, and then is obliquely sprayed from multiple oblique nozzles 17, so that the drilling fluid can be injected into the hole from multiple different directions, so that the drilling fluid is more evenly distributed in the hole, and the drilling fluid can be received at various positions on the inner wall of the hole, so that the drilling fluid has a better effect.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A directional drilling and hole cleaning device, comprising a drilling rig base (1) and a drilling and hole cleaning mechanism located on the drilling rig base (1), characterized in that: A receiving frame (3) is welded above the drilling rig base (1); the drilling and cleaning mechanism comprises a hydraulic cylinder (5) installed above the receiving frame (3), a mounting frame (6) connected to the bottom of the hydraulic cylinder (5), a motor (7) fixed to the inner side of the mounting frame (6), and a drill rod (8) coaxially connected to the output shaft of the motor (7); a through hole (9) is formed on the top wall of the drilling rig base (1), and a bottom groove (13) communicating with the through hole (9) is formed on the bottom wall of the drilling rig base (1); A mud pump (10) is installed on one side of the top wall of the drilling rig base (1), and an input pipe (11) and an output pipe (12) are connected to the mud pump (10), wherein the output pipe (12) is connected to a centralizing tank (14) on a side away from the mud pump (10), and a plurality of oblique nozzles (17) facing the drill pipe (8) are installed on the bottom wall of the centralizing tank (14), and the plurality of oblique nozzles (17) are distributed in a circular array along the central axis of the drill pipe (8), and a guide instrument (16) is also installed on the bottom wall of the installation frame (6).

2. The directional drilling and hole cleaning device according to claim 1, characterized in that: The receiving frame (3) is designed to be in an inverted U shape, and reinforcing plates (4) are welded at the turning points on both sides of the receiving frame (3).

3. The directional drilling and hole cleaning device according to claim 1, characterized in that: The installation frame (6) is in the shape of a square, wherein the motor (7) is vertically installed on the bottom wall of the inner space of the installation frame (6).

4. The directional drilling and hole cleaning device according to claim 1, characterized in that: The side of the input pipe (11) away from the mud pump (10) passes through the receiving frame (3) and extends outward horizontally.

5. The directional drilling and hole cleaning device according to claim 1, characterized in that: Positioning angles (15) are fixedly welded on two opposite side walls of the central tank (14), and the two positioning angles (15) are welded to the inner wall of the bottom tank (13).

6. The directional drilling and hole cleaning device according to claim 1, characterized in that: The concentration tank (14) is annular in design and surrounds the outside of the drill pipe (8).

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