Directional drilling device and method

Abstract

The invention belongs to the technical field of petroleum drilling, and particularly relates to a directional drilling device and method. The directional drilling device comprises an outer-layer casing pipe, a jet drill bit is fixed to the coaxial lower end of the outer-layer casing pipe, and a plurality of outer-layer directional nozzles are arranged on the pipe wall of the outer-layer casing pipe in the circumferential direction in a penetrating mode; the vibration mechanism is arranged in the outer-layer casing pipe, and the vibration mechanism is arranged to be capable of responding to drilling fluid pressure to generate axial vibration so as to drive the outer-layer casing pipe to vibrate in the axial direction to conduct drilling; the inner-layer casing pipe is coaxially and rotatably arranged in the outer-layer casing pipe, and an inner-layer directional nozzle is arranged on the pipe wall of the inner-layer casing pipe in a penetrating manner; and in the process that the inner-layer casing pipe rotates relative to the outer-layer casing pipe, the inner-layer directional nozzles can be matched with the outer-layer directional nozzles correspondingly, and therefore counter-acting force in different directions is generated under the action of drilling fluid.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil drilling, and specifically relates to a directional drilling device and a directional drilling method. Background Art

[0002] Currently, the mainstream directional drilling devices are downhole motor tools (bent screw drill pipe, bent sub, rotary steerable drilling system). These directional drilling devices are connected to conventional drill pipes and deflect the wellbore at the bottom of the well. Due to the relatively large stiffness of drill pipes, etc., it is impossible to achieve short-radius, large-displacement, and high-angle deflection drilling in shallow loose formations in the sea. Another offshore shallow-angle deflection device is a suction anchor pre-deflection device, which can achieve pre-deflection during the surface drilling stage and helps to improve the wellbore deflection rate. However, the length of this device is only 10 - 20 m, and subsequent drilling and deflection still rely on downhole motor tools. Some domestic drilling manufacturers have developed an ultra-short radius drilling device based on coiled tubing. This device is connected to a special small screw motor through coiled tubing to achieve directional drilling. However, the mechanical equipment of this device is relatively complex, and it is easy to generate a situation where the drill pressure cannot be applied due to an increase in friction in large-displacement or horizontal well sections. Summary of the Invention

[0003] In view of the above technical problems, the present invention aims to provide a directional drilling device that can solve the problems of the complexity of the original coiled tubing deflection device and the inability to apply drill pressure in large-displacement and horizontal well sections.

[0004] The present invention also provides a directional drilling method that uses the directional drilling device for drilling.

[0005] According to the present invention, there is provided a directional drilling device, comprising:

[0006] An outer casing, with a jet bit fixedly installed at the coaxial lower end of the outer casing, and a plurality of outer directional nozzles penetrating through the tube wall of the outer casing in the circumferential direction;

[0007] A vibration mechanism arranged inside the outer casing, the vibration mechanism being configured to generate axial vibration in response to the drilling fluid pressure, thereby driving the outer casing to vibrate axially for drilling;

[0008] An inner casing rotatably arranged coaxially inside the outer casing, with inner directional nozzles penetrating through the tube wall of the inner casing;

[0009] Wherein, during the rotation of the inner casing relative to the outer casing, the inner directional nozzles can be respectively adapted to the outer directional nozzles, so as to generate reaction forces in different directions under the action of the drilling fluid.

[0010] In a preferred embodiment, at least one outer pipe snap ring is provided on the inner wall of the outer casing, and an inner pipe snap ring adapted to the outer pipe snap ring is provided on the outer wall of the inner casing, so that the inner casing can rotate coaxially relative to the outer casing.

[0011] In a preferred embodiment, the outer pipe snap ring includes two outer pipe flanges arranged at axial intervals, and an outer pipe groove is formed between the two outer pipe flanges.

[0012] The inner pipe snap ring includes an inner pipe flange, and the inner pipe flange is rotatably arranged coaxially in the outer pipe groove.

[0013] In a preferred embodiment, the outer directional nozzle is arranged at the position of the outer pipe groove, and the inner directional nozzle is arranged at the position of the inner pipe flange.

[0014] In a preferred embodiment, the number of the outer directional nozzles is at least three and is evenly distributed along the circumferential direction of the outer casing.

[0015] In a preferred embodiment, the jet drill bit is fixed to the outer casing by means of threaded connection.

[0016] In a preferred embodiment, a plurality of drill bit nozzles are provided in a penetrating manner at the lower end of the jet drill bit.

[0017] In a preferred embodiment, the vibration mechanism includes:

[0018] A fixing member coaxially and fixedly connected to the outer casing;

[0019] An elastic member coaxially arranged in the fixing member;

[0020] A vibrating member axially movably arranged in the fixing member, and the vibrating member contacts the elastic member;

[0021] The vibrating member is arranged to be able to reciprocate axially relative to the fixing member under the pressure of the drilling fluid and the acting force of the elastic member.

[0022] In a preferred embodiment, the fixing member includes a sealing partition plate and a fixing cylinder. The sealing partition plate seals the inner cavity of the outer casing, the fixing member penetrates through the sealing partition plate, and a channel for communicating the upper and lower sides of the sealing partition plate is provided on the fixing cylinder.

[0023] When the drilling fluid flows through the channel, after the vibrating member approaches the fixing member under the action of the drilling fluid, the channel is blocked, and at the same time, the elastic force of the elastic member increases to be greater than the pressure of the drilling fluid, so that the vibrating member moves away from the fixing member, the channel is unblocked, and the drilling fluid flows through.

[0024] According to the present invention, there is also provided a directional drilling method, which uses the directional drilling device provided by the present invention for drilling.

[0025] Compared with the prior art, the present application has the following advantages.

[0026] The present invention provides a subsea surface pulsating impact type directional jet drilling device and method based on coiled tubing drilling, which can achieve safe, excellent and fast drilling with ultra-short radius, large displacement and high build angle in the loose formation of the subsea surface. The shortest radius can reach 5 m, and the maximum displacement can reach 2000 m. By rotating the inner casing relative to the outer casing, the present invention realizes the orientation of the drilling direction, and the device is simple and reliable, effectively solving the problems of the complexity of the original coiled tubing build angle device and the inability to apply drilling pressure in the large displacement and horizontal well sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described below with reference to the drawings.

[0028] Figure 1 Shows a schematic internal structure diagram of an embodiment of the directional drilling device according to the present invention;

[0029] Figure 2 Shows a schematic external view of an embodiment of the directional drilling device according to the present invention;

[0030] Figure 3 Shows a schematic three-dimensional structure diagram of an embodiment of the directional drilling device according to the present invention;

[0031] Figure 4 Shows Figure 1 the internal structure of;

[0032] Figure 5 Shows a schematic structural diagram of the radial tube according to the present invention.

[0033] In the figure: 1. outer casing; 11. outer directional nozzle; 12. outer pipe clamp ring; 121. outer pipe flange; 122. outer pipe groove;

[0034] 2. jet bit; 21. bit nozzle;

[0035] 3. inner casing; 31. inner directional nozzle; 32. inner pipe clamp ring; 321. inner pipe flange;

[0036] 4. vibration mechanism; 41. fixing member; 42. elastic member; 43. vibrating member; 431. conical member; 432. cylindrical member; 44. sealing partition board; 45. fixing cylinder; 46. channel; 47. radial tube; 100. directional drilling device.

[0037] In this application, all the attached drawings are schematic drawings, which are only used to illustrate the principle of the present invention and are not drawn to actual scale. Detailed implementation mode

[0038] The present invention will be introduced below with reference to the attached drawings.

[0039] It should be noted that in this application, the direction close to the wellhead after the present invention enters the well is described as "up", "front" or similar terms, that is Figure 1 on the left side; and the direction away from the wellhead is described as "down", "rear" or similar terms, that is Figure 1 on the right side.

[0040] Figure 1 shows the structure of the directional drilling device 100 according to the present invention. As Figure 1 and Figure 2 shown, the directional drilling device 100 includes an outer casing 1, a jet bit 2, a vibration mechanism 4 and an inner casing 3.

[0041] In this embodiment, a plurality of outer directional nozzles 11 are arranged in a penetrating manner along the circumferential direction on the pipe wall of the outer casing 1, and the outer directional nozzles 11 communicate the inner cavity of the outer casing 1 with the outer cavity of the outer casing 1.

[0042] The inner casing 3 is an axially penetrating hollow cylinder structure, which is coaxially rotatably arranged inside the outer casing 1, and a single inner directional nozzle 31 is arranged in a penetrating manner on the pipe wall of the inner casing 3. The inner directional nozzle 31 communicates the inner cavity of the inner casing 3 with the outer cavity of the inner casing 3.

[0043] The vibration mechanism 4 is arranged inside the outer casing 1, and the vibration mechanism 4 is arranged to be able to generate axial vibration in response to the drilling fluid pressure, thereby driving the outer casing 1 to vibrate axially. The jet bit 2 is coaxially and fixedly arranged at the lower end of the outer casing 1. The vibration mechanism 4 drives the outer casing 1 to vibrate axially, and further makes the jet bit 2 generate an axial periodic impact force to achieve axial drilling.

[0044] During the working process, the outer casing 1 is connected to other downhole tools above, and the other downhole tools can control the axial movement of the outer casing 1, so as to adjust the overall depth of the directional drilling device 100. The inner casing 3 is configured to be able to rotate relative to the outer casing 1, and adjusting the position of the inner directional nozzle 31 of the inner casing 3 relative to the outer directional nozzles 11 of the outer casing 1 can make the inner directional nozzle 31 respectively adapt to each outer directional nozzle 11, so as to generate reaction forces in different directions under the action of the drilling fluid and achieve the directional effect.

[0045] In a preferred embodiment, both the outer casing 1 and the inner casing 3 are coiled tubing.

[0046] Specifically, during normal drilling, the upper end of the inner casing 3 is connected to a drilling pump (not shown in the figure), and the drilling pump pumps drilling fluid into the inner casing 3 and the outer casing 1. As Figure 1 shown, an internal thread is provided at the upper end of the inner casing 3 for connection to the drilling pump.

[0047] When the inner directional nozzle 31 of the inner casing 3 does not coincide with the outer directional nozzle 11 of the outer casing 1, the drilling fluid can only flow along the axial direction of the inner casing 3 and the outer casing 1. During the flow of the drilling fluid, it passes through the vibration mechanism 4, and by controlling the pulsed periodic change of the drilling fluid displacement, the periodic compression of the vibration mechanism 4 is achieved, thereby generating a periodic axial impact force on the outer casing 1, which can effectively promote the application of the drilling pressure of the jet bit 2 and achieve efficient drilling.

[0048] During the inclination process, by rotating the angle of the inner casing 3 relative to the outer casing 1, the inner directional nozzle 31 of the inner casing 3 coincides with one of the outer directional nozzles 11 of the outer casing 1. At this time, the drilling fluid can flow out through the inner directional nozzle 31 and the outer directional nozzle 11, thereby generating a radial reaction force on the outer casing 1 and achieving the directional effect.

[0049] According to the present invention, in a specific embodiment, at least one outer pipe clamp ring 12 is provided on the inner wall of the outer casing 1, and an inner pipe clamp ring 32 adapted to the outer pipe clamp ring 12 is provided on the outer wall of the inner casing 3. The inner pipe clamp ring 32 can be connected to the outer pipe clamp ring 12 in a rotational connection manner, so that the inner casing 3 can rotate coaxially relative to the outer casing 1.

[0050] Further, the outer pipe clamp ring 12 includes two outer pipe flanges 121 arranged at axial intervals. The outer pipe flanges 121 are arranged in a ring structure, the outer wall of the outer pipe flange 121 is fixedly sealed with the inner wall of the outer casing 1, and the inner wall dimension of the outer pipe flange 121 is smaller than the inner wall dimension of the outer casing 1, so as to form an outer pipe groove 122 between the two outer pipe flanges 121.

[0051] The inner pipe clamp ring 32 includes an inner pipe flange 321. The inner pipe flange 321 is arranged in a ring structure, and the inner wall of the inner pipe flange 321 is fixedly sealed with the outer wall of the inner pipe clamp ring 32. The inner pipe flange 321 is rotatably arranged in the outer pipe groove 122, and the outer wall of the inner pipe flange 321 is slidably and sealingly connected to the inner wall of the outer pipe groove 122.

[0052] The outer directional nozzle 11 is arranged at the position of the outer pipe groove 122, and the inner directional nozzle 31 is arranged at the position of the inner pipe flange 321. Through this arrangement, it is ensured that the drilling fluid can only flow out of the inner casing 3 and the outer casing 1 in the radial direction when the outer directional nozzle 11 coincides with the inner directional nozzle 31.

[0053] Therefore, in the present invention, the outer pipe clamp ring 12 and the inner pipe clamp ring 32 can achieve multiple technical effects. First, the outer pipe clamp ring 12 and the inner pipe clamp ring 32 can limit the axial relative displacement between the outer casing 1 and the inner casing 3 and enable the two to rotate relative to each other. Second, the outer pipe clamp ring 12 and the inner pipe clamp ring 32 can form a sliding seal structure between the outer casing 1 and the inner casing 3. Only when the outer directional nozzle 11 coincides with the inner directional nozzle 31, the drilling fluid in the inner casing 3 can flow out of the inner casing 3 through the inner directional nozzle 31 and the outer directional nozzle 11 in sequence to the outside of the outer casing 1, providing a radial reaction force for the outer casing 1 to achieve directional drilling.

[0054] In a preferred embodiment, two outer pipe clamp rings 12 are provided on the inner wall of the outer casing 1, respectively provided on the upper and lower parts of the outer casing 1. Correspondingly, two inner pipe clamp rings 32 are provided on the outer wall of the inner casing 3.

[0055] By providing two outer pipe clamp rings 12 and two inner pipe clamp rings 32, the relative rotation between the outer casing 1 and the inner casing 3 can be made smoother.

[0056] It should be noted that although in this Figure 1 embodiment, the outer directional nozzle 11 and the inner directional nozzle 31 are provided at the position of a set of outer pipe clamp ring 12 and inner pipe clamp ring 32 close to the jet bit 2, the present invention is not limited to this setting. The outer directional nozzle 11 and the inner directional nozzle 31 can be provided at the position of any set of outer pipe clamp ring 12 and inner pipe clamp ring 32, or the outer directional nozzle 11 and the inner directional nozzle 31 are provided at the positions of multiple sets of outer pipe clamp ring 12 and inner pipe clamp ring 32. It should be noted that the phase angles of each set of outer directional nozzle 11 and inner directional nozzle 31 should be kept the same to increase the radial reaction force during the build-up process.

[0057] It is easy to understand that the number of the outer pipe clamp rings 12 and the inner pipe clamp rings 32 can also be set to be more.

[0058] Furthermore, in a preferred embodiment, when the outer directional nozzle 11 and the inner directional nozzle 31 are provided at the positions of multiple sets of outer pipe clamp ring 12 and inner pipe clamp ring 32, the phase angles of each set of outer directional nozzle 11 and inner directional nozzle 31 can be set to be different, so that the outer casing 1 can be subjected to reaction forces in various different directions to meet various different build-up conditions.

[0059] In a preferred embodiment, the number of the outer directional nozzles 11 is at least three and is evenly distributed along the circumferential direction of the outer casing 1. In this embodiment, four outer directional nozzles 11 are provided.

[0060] It should be noted that although the number of the outer layer directional nozzles 11 in this embodiment is set to four, the number of the outer layer directional nozzles 11 in the present invention is not limited to four. Those skilled in the art can make corresponding settings for the number of the outer layer directional nozzles 11 according to the present invention in combination with the actual situation, and such changes should be within the protection scope of the present invention.

[0061] In a specific embodiment, the jet bit 2 is fixed to the outer casing 1 by means of threaded connection. As Figure 1 shown, an external thread is provided at the upper end of the jet bit 2, and an internal thread is provided at the lower end of the outer casing 1, and the two are connected to each other.

[0062] In a specific embodiment, at least one bit nozzle 21 is provided in a penetrating manner at the lower end of the jet bit 2.

[0063] According to the present invention, the vibration mechanism 4 includes a fixing member 41 fixedly connected coaxially with the outer casing 1, an elastic member 42 coaxially arranged inside the fixing member 41, and a vibrating member 43 axially movably arranged inside the fixing member 41. The vibrating member 43 contacts the elastic member 42, and the vibrating member 43 is arranged to be able to axially reciprocate relative to the fixing member 41 under the pressure of the drilling fluid and the acting force of the elastic member 42, so as to generate an axial impact force to provide the driving force for the jet bit 2 to drill.

[0064] In a specific embodiment, the fixing member 41 includes a sealing partition plate 44 and a fixing cylinder 45. Combining Figure 1 and Figures 3 to 5 shown, the sealing partition plate 44 seals the inner cavity of the outer casing 1, and the fixing member 41 is provided in a penetrating manner on the sealing partition plate 44. In this embodiment, the fixing member 41 and the sealing partition plate 44 are integrally designed. A channel 46 for communicating the upper and lower sides of the sealing partition plate 44 is provided on the fixing cylinder 45, so that the drilling fluid can only flow downward through the channel 46.

[0065] The vibrating member 43 includes a conical member 431 and a cylindrical member 432 fixedly connected coaxially. The maximum diameter of the conical member 431 is larger than the diameter of the channel 46, and the cylindrical member 432 is axially slidably arranged in the channel 46. The elastic member 42 is a spring, coaxially arranged in the channel 46, one end of the elastic member 42 abuts against the sealing partition plate 44, and the other end abuts against the cylindrical member 432.

[0066] In Figure 1When in the position shown, the conical member 431 has not blocked the passage 46 yet. At this time, the drilling fluid can flow through the passage 46. Meanwhile, under the action of the drilling fluid, the vibrating member 43 moves in the direction close to the fixing member 41. Eventually, the end face of the conical member 431 contacts the end face of the fixing cylinder 45, thus blocking the passage 46. By controlling the pulsed periodic change of the drilling fluid discharge, the elastic force of the elastic member 42 increases to be greater than the pressure of the drilling fluid. The elastic member 42 pushes the vibrating member 43 upward, so that the vibrating member 43 moves away from the fixing member 41, the conical member 431 disengages from the fixing cylinder 45, and the passage 46 is unblocked, allowing the drilling fluid to flow through. Repeating this process enables the vibration mechanism 4 to continuously generate axial impact forces.

[0067] In a preferred embodiment, as Figure 3 shown, the lower end of the fixing cylinder 45 extends beyond the sealing partition 44, and a radial pipe 47 is arranged radially on the side surface of the lower end portion of the fixing cylinder 45. The radial pipe 47 communicates with the passage 46 and is located below the sealing partition 44. In this way, the resistance of the drilling fluid flowing through the passage 46 is increased, enhancing the axial impact effect of the vibrating member 43.

[0068] In an embodiment of the present invention, a directional drilling method is provided, using the directional drilling device 100 provided according to the present invention for drilling.

[0069] Specifically, during the drilling process, the upper end of the inner casing 3 is connected to a drilling pump (not shown in the figure), and the drilling pump pumps the drilling fluid into the inner casing 3 and the outer casing 1. During normal drilling, it is controlled that the inner directional nozzle 31 of the inner casing 3 does not coincide with the outer directional nozzle 11 of the outer casing 1, and the drilling fluid can only flow along the axial directions of the inner casing 3 and the outer casing 1.

[0070] During the flow of the drilling fluid, it passes through the vibration mechanism 4. By controlling the pulsed periodic change of the drilling fluid discharge, the periodic compression of the vibration mechanism 4 is achieved, thereby generating a periodic axial impact force on the outer casing 1, which can effectively promote the application of the drilling pressure of the jet bit 2 and achieve efficient drilling.

[0071] During the inclination process, by rotating the inner casing 3 relative to the outer casing 1, the inner directional nozzle 31 of the inner casing 3 coincides with one of the outer directional nozzles 11 of the outer casing 1. At this time, the drilling fluid can flow out through the inner directional nozzle 31 and the outer directional nozzle 11, thereby generating a radial reaction force on the outer casing 1 to achieve the directional effect.

[0072] Meanwhile, the drilling fluid flows through the vibration mechanism 4. By controlling the pulsed periodic change of the drilling fluid discharge, the periodic compression of the vibration mechanism 4 is achieved, thereby generating a periodic axial impact force on the outer casing 1, which can effectively promote the application of the drilling pressure of the jet bit 2 and carry out the inclination work.

[0073] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0074] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0076] Finally, it should be noted that the above are only the preferred embodiments of the present invention and do not constitute any limitation to the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A directional drilling device, characterized in that, Comprising: An outer casing (1), a jet bit (2) is fixedly arranged at the coaxial lower end of the outer casing (1), and a plurality of outer directional nozzles (11) are arranged through the wall of the outer casing (1) in the circumferential direction; A vibration mechanism (4) arranged inside the outer casing (1), the vibration mechanism (4) is arranged to be able to generate axial vibration in response to the drilling fluid pressure, so as to drive the outer casing (1) to vibrate axially for drilling; An inner casing (3) arranged coaxially and rotatably inside the outer casing (1), and inner directional nozzles (31) are arranged through the wall of the inner casing (3); Wherein, during the rotation of the inner casing (3) relative to the outer casing (1), the inner directional nozzles (31) can be respectively adapted to each of the outer directional nozzles (11), so as to generate reaction forces in different directions under the action of the drilling fluid.

2. The directional drilling device according to claim 1, characterized in that At least one outer pipe snap ring (12) is arranged on the inner wall of the outer casing (1), and an inner pipe snap ring (32) for adapting to the outer pipe snap ring (12) is arranged on the outer wall of the inner casing (3), so that the inner casing (3) can rotate coaxially relative to the outer casing (1).

3. The directional drilling device according to claim 2, characterized in that The outer pipe snap ring (12) includes two outer pipe flanges (121) arranged at axial intervals, and an outer pipe groove (122) is formed between the two outer pipe flanges (121); The inner pipe snap ring (32) includes an inner pipe flange (321), and the inner pipe flange (321) is arranged to rotate coaxially in the outer pipe groove (122).

4. The directional drilling device according to claim 3, characterized in that, The outer directional nozzles (11) are arranged at the position of the outer pipe groove (122), and the inner directional nozzles (31) are arranged at the position of the inner pipe flange (321).

5. The directional drilling device according to any one of claims 1 to 4, characterized in that, The number of the outer directional nozzles (11) is at least three and is evenly distributed along the circumferential direction of the outer casing (1).

6. The directional drilling device according to any one of claims 1 to 4, characterized in that, The jet bit (2) is fixedly connected with the outer casing (1) by means of threaded connection.

7. The directional drilling device according to any one of claims 1 to 4, characterized in that, A plurality of bit nozzles (21) are arranged through the lower end of the jet bit (2).

8. The directional drilling device according to any one of claims 1 to 4, characterized in that, The vibration mechanism (4) includes: A fixing member (41) fixedly connected coaxially with the outer casing (1); An elastic member (42) coaxially arranged inside the fixing member (41); A vibrating member (43) axially movably arranged inside the fixing member (41), and the vibrating member (43) contacts the elastic member (42); The vibrating member (43) is arranged to be able to move axially back and forth relative to the fixing member (41) under the pressure of the drilling fluid and the action of the elastic member (42).

9. The directional drilling device according to claim 8, characterized in that, The fixing member (41) includes a sealing partition plate (44) and a fixing cylinder (45), the sealing partition plate (44) seals off the inner cavity of the outer casing (1), the fixing member (41) is arranged through the sealing partition plate (44), and a channel (46) for communicating the upper and lower sides of the sealing partition plate (44) is arranged on the fixing cylinder (45). When the drilling fluid flows through the channel (46), after the vibrating member (43) approaches the fixing member (41) under the action of the drilling fluid, the channel (46) is blocked, and at the same time, the elastic force of the elastic member (42) increases to be greater than the pressure of the drilling fluid, so that the vibrating member (43) moves away from the fixing member (41), the channel (46) is unblocked, and the drilling fluid can flow through.

10. A directional drilling method, characterized in that, Use the directional drilling device according to any one of claims 1 to 9 to drill a well.

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