Directional drilling equipment

Abstract

The utility model provides directional drilling equipment, which comprises a drilling tool, which comprises a drill rod, a drill bit motor and a drill bit which are sequentially connected in the drilling direction, and the drill bit motor is in driving connection with the drill bit so as to drive the drill bit to rotate around the axis of the drill bit relative to the drill rod; the main drilling machine is in driving connection with the drill rod to drive the drill rod to rotate around the axis; the auxiliary drilling machine comprises a medium pump, a medium driving pipe and a first variable displacement motor, the medium pump is communicated with an inlet of the medium driving pipe, an outlet of the medium driving pipe is communicated with the drill bit motor through a drill rod so as to drive the drill bit motor to work, and the first variable displacement motor is electrically connected with the medium pump so as to control the medium pump to work. Through the technical scheme provided by the invention, the problems of long construction time and low efficiency of large-diameter directional drilling in related technologies can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of large-diameter drilling, in particular to directional drilling equipment. Background Art

[0002] At present, the technology of using large-diameter drilling holes instead of tunnels to control gas in the upper corners of domestic coal mines is becoming more and more mature. This technology can achieve effective extension of the borehole. The borehole can extend along the cracks in the roof under control, so that gas can be extracted from the area stably and efficiently, thereby ensuring that the borehole can successfully extract high-concentration and large-flow gas, while ensuring a long extraction time.

[0003] In the related art, when constructing a large-diameter directional drilling hole at a high position of the roof, a directional drilling rig is first used to use a small-diameter drill bit and a drill rod and drill tool combination to directional drill a hole, and then a large-diameter drill bit and a drill rod and drill tool combination are used to perform a one-time or multi-stage hole expansion to finally form a large-diameter directional drilling hole.

[0004] However, the construction time of large-diameter directional drilling in the related art is long and the efficiency is low. Utility Model Content

[0005] The utility model provides a directional drilling device to solve the problems of long construction time and low efficiency of large-diameter directional drilling in the related technology.

[0006] The utility model provides a directional drilling equipment, which comprises: a drilling tool, comprising a drill rod, a drill motor and a drill bit which are sequentially connected in the drilling direction, the drill motor being connected to the drill bit drivingly to drive the drill bit to rotate relative to the drill rod around its axis; a main drilling rig, connected to the drill rod drivingly to drive the drill rod to rotate around its axis; an auxiliary drilling rig, comprising a medium pump, a medium driving pipe and a first variable motor, the medium pump being connected to an inlet of the medium driving pipe, the outlet of the medium driving pipe being connected to the drill motor through the drill rod to drive the drill motor to work, and the first variable motor being electrically connected to the medium pump to control the work of the medium pump.

[0007] Furthermore, the directional drilling equipment also includes: a medium parameter detection component, which is arranged on the medium driving pipe; an auxiliary drilling rig controller, which is respectively connected to the medium parameter detection component and the first variable motor signal, and the auxiliary drilling rig controller controls the operation of the first variable motor according to the detection result of the medium parameter detection component.

[0008] Furthermore, the medium parameter detection element includes a pressure detection element and / or a flow detection element.

[0009] Furthermore, the directional drilling equipment also includes: a trajectory detection component, which is arranged on the drill rod; an auxiliary drilling rig controller, which is respectively connected to the trajectory detection component and the first variable motor signal, and the auxiliary drilling rig controller controls the operation of the first variable motor according to the detection result of the trajectory detection component.

[0010] Furthermore, the drill rod includes a conventional drill rod and a non-magnetic drill rod connected in sequence in the drilling direction, the trajectory detection component is arranged in the non-magnetic drill rod, the main drilling rig is drive-connected to the conventional drill rod, and the drill bit motor is arranged at one end of the non-magnetic drill rod away from the conventional drill rod.

[0011] Furthermore, the non-magnetic drill rod includes a first drill rod section, a probe outer tube and a second drill rod section which are connected in sequence in the drilling direction. The first drill rod section is arranged at an end of the conventional drill rod facing the drill bit, the trajectory detector is arranged in the probe outer tube, and the drill bit motor is arranged at an end of the second drill rod section away from the conventional drill rod.

[0012] Furthermore, the main drilling rig includes: a power head, which is connected to the drill rod drive; a second variable motor, which is electrically connected to the power head to control the operation of the power head; a main drilling rig controller, which is respectively connected to the trajectory detection component and the second variable motor signal, and the main drilling rig controller controls the operation of the second variable motor according to the detection result of the trajectory detection component.

[0013] Furthermore, the main drilling rig further comprises: a machine body, on which the power head is arranged; a guide, which is arranged on the machine body, and on which the drill rod is movably arranged along the drilling direction and rotatably arranged around its axis;

[0014] Furthermore, the drill bit has a spray hole, the drill bit motor has a liquid outlet, the liquid outlet is connected to the spray hole, and the directional drilling equipment also includes: a four-way hole, having a drill rod inlet and a drill rod outlet arranged opposite to each other, the drill rod is passed through the drill rod inlet and the drill rod outlet, the drill rod inlet is located on the side of the drill rod outlet close to the main drilling rig, and the four-way hole also has a negative pressure exhaust port and a drain port; a sealing ring is arranged at the drill rod inlet and sleeved on the drill rod, and a connecting gap is provided between the drill rod and the drill rod outlet and is connected to the negative pressure exhaust port and the drain port.

[0015] Furthermore, the directional drilling equipment also includes an orifice pipe arranged at the outlet of the drill rod, the drill rod is passed through the orifice pipe, and the communication interval is arranged between the inner wall of the orifice pipe and the outer wall of the drill rod.

[0016] Furthermore, the drill motor includes a mounting section, a driving section and an angle adjustment member, the driving section is arranged at one end of the drill rod facing the drill bit, the mounting section is swingably arranged at one end of the driving section facing the drill bit, the outlet of the medium driving tube is connected to the mounting section to drive the mounting section to drive the drill bit to rotate around the axis of the drill bit, and the angle adjustment member is arranged between the mounting section and the driving section to adjust the angle between the mounting section and the driving section; the drilling tool also includes a sealing water braid arranged at one end of the drill rod away from the drill bit, the medium driving tube is passed through the sealing water braid, and the sealing water braid can seal the gap between the outer wall of the drill rod and the medium driving tube.

[0017] By applying the technical solution of the utility model, the directional drilling equipment includes a drilling tool, a main drilling rig and an auxiliary drilling rig. The main drilling rig is connected to the drill rod driving to provide power for the rotation of the drill rod. The medium driving pipe is connected to the drill motor. The drill motor is connected to the drill driving to provide drilling power for the drill. During the drilling process of the drill, the medium in the medium driving pipe is discharged into the borehole after driving the drill motor to work. The rotating drill rod and the medium in the borehole are used to drive the drill cuttings in the borehole to be discharged from the borehole, thereby realizing the slag discharge of the directional drilling equipment. The first variable motor is used to control the operation of the medium pump to adjust the flow and pressure of the medium and change the output torque of the drill motor, so that the drilling power of the drill bit can be adjusted according to the construction conditions of large-diameter directional drilling, thereby improving the construction efficiency of large-diameter directional drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 The schematic diagram of the structure of the directional drilling equipment provided by the embodiment of the utility model is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Drilling tools; 11. Drill rod; 111. Conventional drill rod; 112. Non-magnetic drill rod; 1121. First drill rod section; 1122. Probe outer tube; 1123. Second drill rod section; 12. Drill motor; 121. Mounting section; 122. Driving section; 123. Angle adjustment member; 13. Drill bit; 14. Sealing water braid;

[0022] 20. Main drilling rig; 21. Power head; 22. Second variable motor; 23. Machine body; 24. Guide;

[0023] 30. Auxiliary drilling machine; 31. Medium pump; 32. Medium driving pipe; 33. First variable motor;

[0024] 40. Orifice four-way;

[0025] 50. Orifice pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] like Figure 1 As shown, an embodiment of the utility model provides a directional drilling equipment, which includes a drilling tool 10, a main drilling rig 20 and an auxiliary drilling rig 30. The drilling tool 10 includes a drill rod 11, a drill motor 12 and a drill bit 13 connected in sequence in the drilling direction. The drill motor 12 is driven and connected to the drill bit 13 to drive the drill bit 13 to rotate around its axis relative to the drill rod 11. The main drilling rig 20 is driven and connected to the drill rod 11 to drive the drill rod 11 to rotate around its axis. The auxiliary drilling rig 30 includes a medium pump 31, a medium drive pipe 32 and a first variable motor 33. The medium pump 31 is connected to the inlet of the medium drive pipe 32, and the outlet of the medium drive pipe 32 is connected to the drill motor 12 through the drill rod 11 to drive the drill motor 12 to work. The first variable motor 33 is electrically connected to the medium pump 31 to control the operation of the medium pump 31.

[0028] In the directional drilling equipment provided in this embodiment, the main drilling rig 20 is connected to the drill rod 11 to provide power for the rotation of the drill rod 11, the medium driving pipe 32 is connected to the drill motor 12, and the drill motor 12 is connected to the drill driving to provide drilling power for the drill bit. During the drilling process of the drill bit, the medium in the medium driving pipe 32 is discharged into the borehole after driving the drill motor 12 to work, and the rotating drill rod 11 and the medium in the borehole are used to drive the drill cuttings in the borehole to be discharged from the borehole, thereby realizing the slag discharge of the directional drilling equipment, and the first variable motor 33 is used to control the operation of the medium pump 31 to adjust the flow and pressure of the medium and change the output torque of the drill motor 12, so that the drilling power of the drill bit can be adjusted according to the construction conditions of large-diameter directional drilling, thereby improving the construction efficiency of large-diameter directional drilling.

[0029] In this embodiment, the directional drilling equipment further includes a medium parameter detection component and an auxiliary drilling rig controller. The medium parameter detection component is arranged on the medium driving pipe 32. The auxiliary drilling rig controller is respectively connected with the medium parameter detection component and the first variable motor 33 by signal. The auxiliary drilling rig controller controls the first variable motor 33 to work according to the detection result of the medium parameter detection component. The auxiliary drilling rig controller controls the first variable motor 33 to work according to the detection result of the medium parameter detection component, thereby improving the automation degree of the first variable motor 33.

[0030] The medium parameter detection element includes a pressure detection element and / or a flow detection element, so that the auxiliary drilling rig controller can control the operation of the first variable motor 33 according to the pressure and flow of the medium in the medium driving pipe 32, and when the first variable motor 33 controls the medium pump 31 to adjust the flow and pressure of the medium, the pressure detection element and the flow detection element can be used to detect whether the first variable motor 33 and the medium pump 31 are working normally.

[0031] In this embodiment, the directional drilling equipment further includes a trajectory detector and an auxiliary drilling rig controller. The trajectory detector is arranged on the drill rod 11. The auxiliary drilling rig controller is connected to the trajectory detector and the first variable motor 33 by signals respectively. The auxiliary drilling rig controller controls the first variable motor 33 to work according to the detection result of the trajectory detector. The auxiliary drilling rig controller controls the first variable motor 33 to work according to the detection result of the trajectory detector, thereby improving the degree of automation of the first variable motor 33. The trajectory detector is arranged in the drill rod 11 and moves with the drill rod 11. In the process of the trajectory detector moving with the drill rod 11, the trajectory detector can record the drilling trajectory and measure the azimuth and inclination during the drilling process. When the trajectory detector shows that the drilling trajectory is stagnant, the first variable motor 33 can be used to increase the drilling torque of the drill bit 13.

[0032] like Figure 1 As shown, the drill rod 11 includes a conventional drill rod 111 and a non-magnetic drill rod 112 connected in sequence in the drilling direction, the track detection component is arranged in the non-magnetic drill rod 112, the main drilling machine 20 is drivingly connected to the conventional drill rod 111, and the drill motor 12 is arranged at one end of the non-magnetic drill rod 112 away from the conventional drill rod 111. The conventional drill rod 111 and the non-magnetic drill rod 112 are adopted, and the track detection component is arranged in the non-magnetic drill rod 112, so as to improve the detection reliability of the track detection component, and the conventional drill rod 111 and the non-magnetic drill rod 112 can be selected from different materials, so as to save costs.

[0033] like Figure 1 As shown, the non-magnetic drill rod 112 includes a first drill rod section 1121, a probe outer tube 1122, and a second drill rod section 1123 connected in sequence in the drilling direction, the first drill rod section 1121 is arranged at one end of the conventional drill rod 111 facing the drill bit 13, the track detection component is arranged in the probe outer tube 1122, and the drill motor 12 is arranged at one end of the second drill rod section 1123 away from the conventional drill rod 111. By using the above-mentioned first drill rod section 1121, the probe outer tube 1122, and the second drill rod section 1123, the track detection component is arranged in the probe outer tube 1122, and under the premise of not affecting the total length of the non-magnetic drill rod 112, by disassembling and assembling the first drill rod section 1121, the probe outer tube 1122, and the second drill rod section 1123, it is convenient to quickly perform the installation operation of the track detection component.

[0034] like Figure 1As shown, the main drilling rig 20 includes a power head 21, a second variable motor 22 and a main drilling rig controller. The power head 21 is connected to the drill rod 11 by driving, and the second variable motor 22 is electrically connected to the power head 21 to control the operation of the power head 21. The main drilling rig controller is respectively connected to the trajectory detection component and the second variable motor 22 by signal, and the main drilling rig controller controls the operation of the second variable motor 22 according to the detection result of the trajectory detection component. The main drilling rig controller controls the operation of the second variable motor 22 according to the detection result of the trajectory detection component, thereby improving the degree of automation of the operation of the second variable motor 22. When the trajectory detection component shows that the drilling trajectory is stagnant, the second variable motor 22 can be used to increase the rotation speed of the drill rod 11 to quickly discharge the drill cuttings in the borehole.

[0035] like Figure 1 As shown, the main drilling rig 20 also includes a body 23 and a guide 24. The power head 21 is arranged on the body 23, the guide 24 is arranged on the body 23, and the drill rod 11 is movably arranged along the drilling direction and rotatably arranged around its axis through the guide 24. The guide 24 guides the movement of the drill rod 11 along the drilling direction to prevent the drill rod 11 from vibrating and swinging due to the interference of drilling debris.

[0036] In this embodiment, the drill bit 13 has a spray hole, the drill motor 12 has a liquid outlet, the liquid outlet is connected to the spray hole, the directional drilling equipment also includes a hole spool 40 and a sealing ring, the hole spool 40 has a drill rod 11 inlet and a drill rod 11 outlet arranged opposite to each other, the drill rod 11 is arranged through the drill rod 11 inlet and the drill rod 11 outlet, the drill rod 11 inlet is located on the side of the drill rod 11 outlet close to the main drilling rig 20, the hole spool 40 also has a negative pressure exhaust port and a drain port, the sealing ring is arranged at the drill rod 11 inlet and sleeved on the drill rod 11, and there is a connecting gap between the drill rod 11 and the drill rod 11 outlet that is connected to the negative pressure exhaust port and the drain port. The negative pressure exhaust port can be used to suck harmful gases in the borehole, and the medium in the borehole drives the drill cuttings in the borehole to be discharged through the drain port for subsequent treatment to avoid environmental pollution.

[0037] like Figure 1 As shown, the directional drilling equipment also includes an orifice pipe 50 arranged at the outlet of the drill rod 11, the drill rod 11 is inserted into the orifice pipe 50, and the communication interval is arranged between the inner wall of the orifice pipe 50 and the outer wall of the drill rod 11. Before the construction of the directional drilling equipment, a preset orifice needs to be drilled, the orifice pipe 50 is arranged in the preset orifice for support to prevent the preset orifice from collapsing, and then the drilling tool 10 is inserted into the orifice pipe 50.

[0038] like Figure 1As shown, the drill motor 12 includes a mounting section 121, a driving section 122 and an angle adjustment member 123. The driving section 122 is arranged at one end of the drill rod 11 facing the drill bit 13. The mounting section 121 is swingably arranged at one end of the driving section 122 facing the drill bit 13. The outlet of the medium driving pipe 32 is connected to the mounting section 121 to drive the mounting section 121 to drive the drill bit 13 to rotate around the axis of the drill bit 13. The angle adjustment member 123 is arranged between the mounting section 121 and the driving section 122 to adjust the angle between the mounting section 121 and the driving section 122. The angle between the mounting section 121 and the driving section 122 is adjusted by the angle adjustment member 123 to change the drilling direction of the drill bit 13, so that the drilling direction of the directional drilling equipment can be adjusted, and combined with the detection result of the trajectory detection member, the drilling trajectory can be effectively controlled.

[0039] like Figure 1 As shown, the drilling tool 10 further includes a sealing water braid 14 disposed at one end of the drill rod 11 away from the drill bit 13, and the medium driving tube 32 is passed through the sealing water braid 14. The sealing water braid 14 can seal the gap between the drill rod 11 and the outer wall of the medium driving tube 32. The sealing water braid 14 is used to improve the sealing performance of the connection between the drill rod 11 and the medium driving tube 32.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0042] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0043] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0044] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0045] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A directional drilling equipment, characterized in that: The directional drilling equipment comprises: A drilling tool (10) comprises a drill rod (11), a drill motor (12) and a drill bit (13) which are sequentially connected in a drilling direction, wherein the drill motor (12) is drivingly connected to the drill bit (13) to drive the drill bit (13) to rotate around its axis relative to the drill rod (11); A main drilling machine (20) is drivingly connected to the drill rod (11) to drive the drill rod (11) to rotate around its axis; The auxiliary drilling machine (30) comprises a medium pump (31), a medium driving pipe (32) and a first variable motor (33); the medium pump (31) is connected to the inlet of the medium driving pipe (32); the outlet of the medium driving pipe (32) is connected to the drill motor (12) through the drill rod (11) to drive the drill motor (12) to work; the first variable motor (33) is electrically connected to the medium pump (31) to control the operation of the medium pump (31).

2. The directional drilling equipment according to claim 1, characterized in that: The directional drilling equipment also includes: A medium parameter detection component is arranged on the medium driving pipe (32); The auxiliary drilling rig controller is respectively connected to the medium parameter detection component and the first variable motor (33) by signals, and the auxiliary drilling rig controller controls the first variable motor (33) to work according to the detection result of the medium parameter detection component.

3. The directional drilling equipment according to claim 2, characterized in that: The medium parameter detection element includes a pressure detection element and / or a flow detection element.

4. The directional drilling equipment according to claim 1, characterized in that: The directional drilling equipment also includes: A trajectory detection member, arranged on the drill rod (11); The auxiliary drilling rig controller is respectively connected to the track detection component and the first variable motor (33) by signals, and the auxiliary drilling rig controller controls the first variable motor (33) to work according to the detection result of the track detection component.

5. The directional drilling equipment according to claim 4, characterized in that: The drill rod (11) comprises a conventional drill rod (111) and a non-magnetic drill rod (112) which are sequentially connected in the drilling direction; the trajectory detection component is arranged in the non-magnetic drill rod (112); the main drilling machine (20) is drivingly connected to the conventional drill rod (111); and the drill motor (12) is arranged at an end of the non-magnetic drill rod (112) which is away from the conventional drill rod (111).

6. The directional drilling equipment according to claim 5, characterized in that: The non-magnetic drill rod (112) comprises a first drill rod section (1121), a probe outer tube (1122), and a second drill rod section (1123) which are sequentially connected in the drilling direction; the first drill rod section (1121) is arranged at one end of the conventional drill rod (111) facing the drill bit (13); the trajectory detector is arranged in the probe outer tube (1122); and the drill bit motor (12) is arranged at one end of the second drill rod section (1123) facing away from the conventional drill rod (111).

7. The directional drilling equipment according to claim 4, characterized in that: The main drilling rig (20) comprises: A power head (21) drivingly connected to the drill rod (11); A second variable motor (22) is electrically connected to the power head (21) to control the operation of the power head (21); The main drilling rig controller is respectively connected to the track detection component and the second variable motor (22) by signals, and the main drilling rig controller controls the second variable motor (22) to operate according to the detection result of the track detection component.

8. The directional drilling equipment according to claim 7, characterized in that: The main drilling rig (20) further comprises: A machine body (23), wherein the power head (21) is arranged on the machine body (23); The guide (24) is arranged on the machine body (23), and the drill rod (11) is movably arranged along the drilling direction and rotatably arranged around its axis through the guide (24).

9. The directional drilling equipment according to any one of claims 1 to 8, characterized in that: The drill bit (13) has a spray hole, the drill bit motor (12) has a liquid outlet, the liquid outlet is connected to the spray hole, and the directional drilling equipment also includes: The orifice spool (40) has a drill rod (11) inlet and a drill rod (11) outlet arranged opposite to each other, the drill rod (11) is inserted through the drill rod (11) inlet and the drill rod (11) outlet, the drill rod (11) inlet is located on a side of the drill rod (11) outlet close to the main drilling rig (20), and the orifice spool (40) also has a negative pressure exhaust port and a drain port; A sealing ring is arranged at the inlet of the drill rod (11) and sleeved on the drill rod (11); a communication gap is provided between the drill rod (11) and the outlet of the drill rod (11) and is connected to the negative pressure exhaust port and the drain port.

10. The directional drilling equipment according to claim 9, characterized in that: The directional drilling equipment further comprises an orifice pipe (50) arranged at the outlet of the drill rod (11), the drill rod (11) is passed through the orifice pipe (50), and the connecting gap is arranged between the inner wall of the orifice pipe (50) and the outer wall of the drill rod (11).

11. The directional drilling equipment according to any one of claims 1 to 8, characterized in that: The drill motor (12) comprises a mounting section (121), a driving section (122) and an angle adjustment member (123); the driving section (122) is arranged at one end of the drill rod (11) facing the drill bit (13); the mounting section (121) is swingably arranged at one end of the driving section (122) facing the drill bit (13); the outlet of the medium driving pipe (32) is connected to the mounting section (121) to drive the mounting section (121) to drive the drill bit (13) to rotate around the axis of the drill bit (13); and the angle adjustment member (123) is arranged between the mounting section (121) and the driving section (122) to adjust the angle between the mounting section (121) and the driving section (122); The drilling tool (10) further comprises a sealing water braid (14) arranged at one end of the drill rod (11) away from the drill bit (13); the medium driving tube (32) is passed through the sealing water braid (14); and the sealing water braid (14) is capable of sealing a gap between the outer wall of the drill rod (11) and the medium driving tube (32).

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