A directional drilling adaptive support device and method

Abstract

The present application relates to a kind of supporting device and method, belong to drilling tool technical field, specifically is related to a kind of directional drilling self-adapting supporting device and method.In the present application, the self-adapting supporting body in self-adapting supporting device is provided with support top rod and push rod, and the flexible support outer cover that closely fits is arranged on top rod, and top rod is connected by waist hole and rotating slide pin with push rod, such setting makes top rod can rotate within a certain range, so that it has the ability of self-adapting support change, and is well fitted on hole wall, compared with the supporting area of rigid supporting body is larger, and push rod pushes top rod and flexible support outer cover tightly on hole wall, so that its supporting force is larger than the supporting device that surface simply sets into flexible material and flexible structure.

Description

Technical Field

[0001] This invention relates to a support device and method, belonging to the field of drilling tool technology, specifically to an adaptive support device and method for directional drilling. Background Technology

[0002] The soft coal directional drilling completion robot is an automated drilling equipment used for gas control in soft coal seams, powered by system air pressure. It can achieve rapid completion of the entire cycle of directional drilling and hole retraction, with high overall efficiency. However, it faces a problem during operation: because there is no balancing force provided by the drilling rig and drill rod, the robot needs to be supported on the bare hole wall when moving forward under pressure and moving backward to maintain its balance. Unlike the smooth inner wall of a pipeline, the inner wall of a bare hole is uneven and has poor continuity. Traditional support devices are either integrated, with a small area supported on the discontinuous hole wall, resulting in insufficient support force; or the surface is made of flexible materials and structures, which can adapt to the unevenness of the hole wall and relatively increase the support area, but a certain buffer is generated when contacting the hole wall, resulting in insufficient support force, which is not conducive to the normal operation of the robot. Summary of the Invention

[0003] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0004] The main objective of this invention is to address the technical problems existing in the prior art by providing an adaptive support device and method for directional drilling. This system and method have a simple structure and can solve the problem of robots struggling to achieve adaptive and complete support due to poor borehole wall continuity.

[0005] To solve the above problems, the solution of the present invention is:

[0006] An adaptive support device for directional drilling, comprising:

[0007] The outer sleeve is supported by several adaptive support bodies arranged circumferentially.

[0008] A support inner sleeve is disposed inside the support outer sleeve, and an inner cylinder cavity with a propulsion working piston is disposed therein;

[0009] The adaptive support includes a support body, on which a plurality of push rod cavities are provided that communicate with the inner cylinder cavity. A support push rod is provided in each push rod cavity, and one end of the support push rod is connected to a support top rod. Adjacent support top rods are rotatably connected.

[0010] Preferably, in the above-mentioned adaptive support device for directional drilling, the pusher cavity includes:

[0011] The left push rod cavity and the right push rod cavity are symmetrically arranged along the axial direction;

[0012] The left and right support rods are respectively connected to the support rods in the left and right push rod cavities, and the left and right support rods are rotatably connected to each other.

[0013] Preferably, in the above-described adaptive support device for directional drilling, a left horizontal channel and a right horizontal channel are symmetrically arranged along the axial direction on the support body, and the left horizontal channel and the right horizontal channel are connected by a connecting channel; the connecting channel is connected to the inner cylinder cavity through a vertical channel provided on the support body; a plurality of left push rod cavities connected to the left horizontal channel are provided along the direction of the left horizontal channel, and a plurality of right push rod cavities connected to the right horizontal channel are provided along the direction of the right horizontal channel; the support rods provided in the left push rod cavities and the right push rod cavities are respectively connected to the left support top rod and the right support top rod, and the left support top rod and the right support top rod are rotatably connected.

[0014] Preferably, in the above-mentioned adaptive support device for directional drilling, a push rod end cap is provided at the top of the push rod cavity, and a push rod connector, a push rod pin hole, and a push rod base are provided on the support push rod; the push rod connector extends outside the push rod cavity, while the push rod base is located inside the push rod cavity and is axially limited by the push rod end cap; a push rod return spring is provided between the push rod base and the push rod end cap.

[0015] Preferably, in the above-mentioned adaptive support device for directional drilling, the support rod is provided with a double-ear connector or a single-ear connector, a waist hole, and an inner groove; the waist hole is located in the inner groove; the push rod connector of the support push rod extends into the inner groove, and the push rod pin hole of the support push rod is connected to the waist hole through a sliding pin.

[0016] Preferably, in the above-mentioned adaptive support device for directional drilling, the adaptive support body includes a flexible support outer sleeve, the flexible support outer sleeve includes a flexible support outer sleeve body and an embedded nut embedded in the flexible support outer sleeve body; the flexible support outer sleeve is connected to the support body body by screws and the embedded nut, and the inside of the flexible support outer sleeve is tightly attached to the support top rod.

[0017] Preferably, in the above-mentioned adaptive support device for directional drilling, a plurality of fixed support body limiting covers are evenly distributed around the circumference of the support outer sleeve, a support body limiting flange is provided at the bottom of the support body body, and the adaptive support body is limited in the radial direction of the support outer sleeve by the support body limiting flange.

[0018] An adaptive support method for directional drilling includes:

[0019] Several adaptive support bodies are arranged circumferentially on a supporting outer sleeve;

[0020] An inner cylinder cavity with a propulsion working piston is provided on the inner sleeve of the support outer sleeve;

[0021] A plurality of push rod cavities communicating with the inner cylinder cavity are provided on the support body of the adaptive support body. Support push rods are provided in the push rod cavities, and one end of the support push rod is connected to the support top rod. Adjacent support top rods are rotatably connected.

[0022] The piston is driven to move to compress the hydraulic oil inside the inner cylinder cavity, and the hydraulic oil is used to drive the support push rod to extend, thereby moving the support top rod along the radial direction of the support outer sleeve.

[0023] Preferably, the above-mentioned adaptive support method for directional drilling includes: the push rod cavity includes: a left push rod cavity and a right push rod cavity, the left push rod cavity and the right push rod cavity being symmetrically arranged in the axial direction;

[0024] The left and right support rods are respectively connected to the support rods in the left and right push rod cavities, and the left and right support rods are rotatably connected to each other.

[0025] Preferably, the above-mentioned adaptive support method for directional drilling includes: the push rod cavity is arranged along the axial direction of the support outer sleeve.

[0026] Therefore, compared with the prior art, the advantages of the present invention are:

[0027] 1. This invention increases the support area and strengthens the support force of the adaptive support device, providing a more reliable support balance force for its fuselage. The adaptive support body in the adaptive support device is equipped with a support top rod and a push rod. A tightly fitting flexible support sleeve is installed on the top rod. The top rod and push rod are connected by a waist hole and a sliding pin. This configuration allows the top rod to rotate within a certain range, enabling it to adapt to changes in support and fit well against the hole wall. Compared to a rigid support body, the support area is larger. The push rod pushes the top rod and the flexible support sleeve tightly against the hole wall, resulting in a greater support force than a support device with a surface made of flexible material and a flexible structure.

[0028] 2. This invention enables the adaptive support device to achieve adaptive support in two dimensions, broadening its application scenarios and scope of application, and making the support more stable. The borehole cross-section and axial boundary are both uneven and discontinuous. The adaptive support device has left and right support rods on its cross-section, which can rotate, giving it the ability to adapt to changes in cross-section support. Multiple sets of such left and right support rods are also provided axially, giving it the ability to adapt to changes in axial support, thus achieving two-dimensional adaptive support. Attached Figure Description

[0029] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and to enable those skilled in the art to make and use this disclosure.

[0030] Figure 1 This is a schematic diagram of the cross-sectional structure of the adaptive support device of the present invention;

[0031] Figure 2 This is a schematic diagram of the adaptive support device of the present invention in AA direction section.

[0032] Figure 3 This is a cross-sectional view of the adaptive support structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the BB-direction cross-sectional structure of the adaptive support of the present invention;

[0034] Figure 5 This is a schematic diagram of the flexible support jacket of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the left support rod of the present invention;

[0036] Figure 7 This is a schematic diagram of the support push rod of the present invention;

[0037] Figure 8 This is a schematic diagram of the right support rod of the present invention;

[0038] Figure 9 This is a schematic diagram of the adaptive device of the present invention operating on the borehole cross section;

[0039] Figure 10 This is a schematic diagram of the adaptive device of the present invention operating in the borehole axis.

[0040] Meaning of reference numerals in the attached diagram:

[0041] 1. Adaptive support body, 2. Support body limiting cover, 3. Support outer sleeve, 4. Support inner sleeve, 5. Wear-resistant block, 6. Pushing return spring, 7. Pushing working piston.

[0042] 11. Support body, 12. Flexible support sleeve, 13. Left support top rod, 14. Rotary sliding pin, 15. Support push rod, 16. Rotary connecting pin, 17. Right support top rod, 18. Push rod end cap, 19. Push rod return spring, 11-1. Support body limiting flange, 11-2. Right push rod cavity, 11-3. Connecting channel, 11-4. Right horizontal channel, 11-5. Vertical channel, 11-6. Left horizontal channel. 11-7. Left push rod cavity; 12-1. Flexible support outer sleeve; 12-2. Embedded nut; 13-1. Double-ear connector for push rod; 13-2. Waist hole for left support push rod; 13-3. Inner groove for left support push rod; 15-1. Single-ear connector for push rod; 15-2. Push rod pin hole; 15-3. Push rod base; 17-1. Single-ear connector for push rod; 17-2. Waist hole for right support push rod; 17-3. Inner groove for right support push rod.

[0043] 31. Left outer jacket buckle, 32. Right outer jacket buckle.

[0044] 41. Inner retaining ring; 42. Inner cylinder cavity.

[0045] 81. Actual profile boundary of the borehole section; 82. Circular fitted profile boundary of the borehole section.

[0046] 91. Actual borehole axial profile boundary; 92. Borehole axial straight line fitting profile boundary.

[0047] Embodiments of the present invention will be described with reference to the accompanying drawings. Detailed Implementation

[0048] This invention provides an adaptive support device and method for directional drilling. Through innovative design of the support device, it solves the problem that robots cannot fully adapt to support due to poor continuity of the borehole wall, thereby improving the reliability and stability of the support.

[0049] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0050] Example 1:

[0051] An adaptive support device and method for directional drilling includes an outer support sleeve 3, an inner support sleeve 4, a support body limiting cover 2, an adaptive support body 1, a wear-resistant block 5, a propulsion working piston 7, and a propulsion return spring 6.

[0052] Multiple support body limiting covers 2, which are fixed by screws, are evenly distributed around the outer sleeve 3 of the support. Wear-resistant blocks 5 are set between the support body limiting covers 2 and fixed to the outer sleeve 3 of the support with screws.

[0053] The inner support sleeve 4 is disposed within the outer support sleeve 3, and is axially limited by a left outer sleeve retaining ring 31 and a right outer sleeve retaining ring 32 disposed within the outer support sleeve 3. It is circumferentially fixed by a portion of the screws securing the fixed support limiting cover 2. The inner support sleeve 4 contains an inner cylinder cavity 42, within which a thrust working piston 7 and a thrust return spring 6 are disposed. The thrust working piston 7 is axially limited by the inner sleeve retaining ring 41 disposed on the inner support sleeve 4. Initially, the thrust working piston 7 is pressed tightly against the inner sleeve retaining ring 41 by the thrust return spring 6.

[0054] The adaptive support 1 is evenly distributed on the circumference of the outer sleeve 3 and can slide in the radial direction of the outer sleeve 3. At the same time, because the adaptive support 1 is provided with a support limiting flange 11-1, the radial sliding distance is limited by the support limiting cover 2. A part of the adaptive support 1 is also on the inner sleeve 4 and communicates with the inner cylinder cavity 42.

[0055] The adaptive support 1 includes a support body 11, a flexible support jacket 12, a left support top rod 13, a sliding pin 14, a support push rod 15, a rotating connecting pin 16, a right support top rod 17, a push rod end cap 18, and a push rod return spring 19.

[0056] The support body 11 is provided with a left horizontal channel 11-6 and a right horizontal channel 11-4, and a connecting channel 11-3 connecting the left horizontal channel 11-6 and the right horizontal channel 11-4. A vertical channel 11-5 connected to the connecting channel 11-3 is also provided on the support body 11. Multiple left push rod cavities 11-7 connected to the left horizontal channel 11-6 are provided along the left horizontal channel 11-6, and multiple right push rod cavities 11-2 connected to the right horizontal channel 11-4 are provided along the right horizontal channel 11-4, each corresponding to one of the left push rod cavities 11-7.

[0057] The support push rod 15 is provided with a push rod single ear connector 15-1, a push rod pin hole 15-2, and a push rod base 15-3. The support push rod 15 is located on the left push rod cavity 11-7 or the right push rod cavity 11-2. At this time, the push rod single ear connector 15-1 extends out of the left push rod cavity 11-7 or the right push rod cavity 11-2, while the push rod base 15-3 is located inside the left push rod cavity 11-7 or the right push rod cavity 11-2, and is axially limited by the push rod end cap 18. A push rod return spring 19 is provided between the push rod base 15-3 and the push rod end cap 18. Under the action of the push rod return spring 19, the push rod base 15-3 is close to the bottom of the left push rod cavity 11-7 or the bottom of the right push rod cavity 11-2.

[0058] The left support rod 13 is provided with a double-ear connector 13-1, a waist hole 13-2, and an inner groove 13-3.

[0059] The right support rod 17 is provided with a single-ear connector 17-1, a waist hole 17-2, and an inner groove 17-3.

[0060] The double-ear connector 13-1 of the left support rod 13 and the single-ear connector 17-1 of the right support rod 17 are connected by a rotating connecting pin 16. At the same time, the single-ear connector 15-1 of the support push rod 15 installed on the left push rod cavity 11-7 or the right push rod cavity 11-2 extends into the inner groove 13-3 of the left support rod or the inner groove 17-3 of the right support rod. At this time, the push rod pin hole 15-2 of the support push rod 15 is connected to the waist hole 13-2 of the left support rod or the waist hole 17-2 of the right support rod through a rotating sliding pin 14.

[0061] The flexible support sleeve 12 consists of a flexible support sleeve body 12-1 and an embedded nut 12-2 embedded in the flexible support sleeve body 12-1. The flexible support sleeve 12 is fixed to the support body 11 by connecting screws and the embedded nut 12-2, while the inside of the flexible support sleeve 12 is tightly attached to the left support rod 13 and the right support rod 17.

[0062] Before operation, the space between the propulsion piston 7, the adaptive support body 1, and the inner cylinder cavity 42 is filled with hydraulic oil.

[0063] Example 2:

[0064] A support method for an adaptive support device for directional drilling is provided. This method is implemented using the adaptive support device of Embodiment 1. The initial state of the device is as follows: the propulsion working piston 7 is pressed against the inner sleeve retainer 41 under the action of the propulsion return spring 6, the adaptive support body 1 is located inside the support outer sleeve 3, and under the action of the push rod return spring 19, the push rod base 15-3 of the support push rod 15 is pressed against the bottom of the left push rod cavity 11-7 or the bottom of the right push rod cavity 11-2. The flexible support outer sleeve 12 is not deformed by force, and its interior is pressed against the left support top rod 13 and the right support top rod 17.

[0065] The adaptive support steps of the adaptive support device on the borehole section:

[0066] The ideal boundary of the borehole section is a circular fitted contour line 82, but in reality it is an uneven and discontinuous contour line 81. When the adaptive support device supports on it, it needs to make corresponding adjustments and changes according to different cross-sectional boundaries to provide a more reliable balanced support force for the machine body during operation.

[0067] Step 1: The high-pressure gas in the system pushes the propulsion piston 7 to compress the propulsion return spring 6 and move it away from the inner sleeve retainer 41. At this time, the inner cylinder cavity 42 is compressed, and the built-in hydraulic oil pushes the adaptive support 1 to extend outward from the support outer sleeve 3 and finally abut against the inner wall of the borehole.

[0068] Step two: continue to introduce high-pressure gas. Since the borehole section boundary is uneven and discontinuous, the working piston 7 will continue to move and compress the inner cylinder cavity 42. The hydraulic oil inside the inner cylinder cavity 42 will act on the push rod base 15-3 of the support push rod 15 in each left push rod cavity 11-7 and right push rod cavity 11-2, pushing the support push rod 15 and compressing the push rod return spring 19 to move closer to the push rod end cap 18. The left support push rod 13 and right support push rod 17 connected to the support push rod 15 will also move together and start pushing the flexible support outer sleeve 12 at the same time.

[0069] Step 3: The flexible support sleeve 12 deforms under the pushing action of the left support rod 13 and the right support rod 17. When the flexible support sleeve 12 touches the hole wall, the left support rod 13 and the right support rod 17 will be passively subjected to the reaction force of the hole wall. Under the action of this force, the left support rod 13 and the right support rod 17 will rotate and adaptively adjust their spatial position as the boundary changes. The support push rod 15 continues to push the left support rod 13 and the right support rod 17 until the flexible support sleeve 12 on the left support rod 13 and the right support rod 17 is tightly attached to the hole wall. At this time, the pressure of the high-pressure gas acting on the propulsion working piston 7 is maintained, and the adaptive support body 1 is tightly supported on the hole wall.

[0070] The adaptive support steps of the adaptive support device in the borehole axis:

[0071] The ideal boundary line in the borehole axis is the contour line 92 that is fitted by a straight line, but in reality it is the uneven and discontinuous contour line 91. In order for the support device to obtain more reliable support force for the machine body in the borehole axis, it needs to make corresponding adjustments and changes during support as the borehole wall boundary changes, so as to relatively increase the support area in the borehole and improve the reliability and stability of the support.

[0072] The adaptive support steps of the adaptive support device in the borehole axis are basically the same as those in the borehole cross section. The only difference is that the adaptive support device presents a single adaptive change support of the left support rod 13 and the right support rod 17 in the cross section, while it presents multiple adaptive change supports of the left support rod 13 and the right support rod 17 in the axial direction.

[0073] As described above, the solution in this embodiment increases the support area and strengthens the support force of the adaptive support device, providing a more reliable support balance force for its fuselage. The adaptive support body in the adaptive support device is equipped with a support top rod and a push rod. A tightly fitting flexible support sleeve is installed on the top rod. The top rod and push rod are connected by a waist hole and a sliding pin. This configuration allows the top rod to rotate within a certain range, enabling it to adapt to changes in support and fit well against the hole wall. Compared to a rigid support body, the support area is larger. The push rod pushes the top rod and the flexible support sleeve tightly against the hole wall, resulting in a greater support force than a support device with a surface made of flexible material and a flexible structure.

[0074] The solution in this embodiment enables the adaptive support device to achieve adaptive support in two dimensions, broadening its application scenarios and scope of application, and making the support more stable. The borehole cross-section and axial boundaries are both uneven and discontinuous. The adaptive support device has left and right support rods on its cross-section, which can rotate, giving it the ability to adapt to changes in cross-section support. Multiple sets of such left and right support rods are also provided axially, giving it the ability to adapt to changes in axial support, thus achieving two-dimensional adaptive support.

[0075] In this embodiment, although the above methods are illustrated and described as a series of actions for the sake of simplicity, it should be understood and appreciated that these methods are not limited by the order of the actions, because according to one or more embodiments, some actions may occur in a different order and / or concurrently with other actions from those illustrated and described herein or not illustrated and described herein but which may be understood by those skilled in the art.

[0076] It should be noted that references to "an embodiment," "an embodiment," "an example embodiment," "some embodiments," etc., in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but each embodiment may not necessarily include said specific features, structures, or characteristics. Furthermore, such phrases do not necessarily refer to the same embodiment. Additionally, when a specific feature, structure, or characteristic is described in connection with an embodiment, whether explicitly described or not, implementing such a feature, structure, or characteristic in conjunction with other embodiments will be within the knowledge of those skilled in the art.

[0077] The prior description of this disclosure is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not intended to be limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A directional drilling adaptive support device, characterized in that, include: Support the outer sleeve (3), and arrange several adaptive support bodies (1) in its circumferential direction; The inner sleeve (4) is provided inside the outer sleeve (3), and an inner cylinder cavity (42) with a propulsion working piston (7) is provided inside it. The adaptive support (1) includes a support body (11), and the support body (11) is provided with a plurality of push rod cavities that are connected to the inner cylinder cavity (42). A support push rod (15) is provided in the push rod cavity. One end of the support push rod (15) is connected to a support top rod, and two adjacent support top rods are rotatably connected. The push rod cavity includes a left push rod cavity (11-7) and a right push rod cavity (11-2), which are symmetrically arranged in the axial direction. Left support rod (13) and right support rod (17), the left support rod (13) and right support rod (17) are respectively connected to the support push rod (15) in the left push rod cavity (11-7) and the right push rod cavity (11-2), and the left support rod (13) and right support rod (17) are rotatably connected; The adaptive support body (1) includes a flexible support jacket (12), which includes a flexible support jacket body (12-1) and an embedded nut (12-2) embedded in the flexible support jacket body (12-1). The flexible support jacket (12) is connected to the support body body (11) by screws and the embedded nut (12-2), and the interior of the flexible support jacket (12) is tightly attached to the support top rod.

2. The adaptive support device for directional drilling according to claim 1, characterized in that, A left horizontal channel (11-6) and a right horizontal channel (11-4) are symmetrically arranged along the axial direction on the support body (11), and the left horizontal channel (11-6) and the right horizontal channel (11-4) are connected by a connecting channel (11-3); the connecting channel (11-3) is connected to the inner cylinder cavity (42) through a vertical channel (11-5) arranged on the support body (11); a plurality of channels connected to the left horizontal channel (11-6) are arranged along the direction of the left horizontal channel (11-6). The left push rod cavity (11-7) of the horizontal channel (11-6) is provided with a plurality of right push rod cavities (11-2) connected to the right horizontal channel (11-4) along the direction of the right horizontal channel (11-4); the support push rods (15) provided in the left push rod cavity (11-7) and the right push rod cavity (11-2) are respectively connected to the left support top rod (13) and the right support top rod (17), and the left support top rod (13) and the right support top rod (17) are rotatably connected.

3. The adaptive support device for directional drilling according to claim 1, characterized in that, A push rod end cap (18) is provided at the top of the push rod cavity. A push rod single ear connector, a push rod pin hole (15-2), and a push rod base (15-3) are provided on the support push rod (15). The push rod single ear connector (15-1) extends out of the push rod cavity, while the push rod base (15-3) is located inside the push rod cavity and is axially limited by the push rod end cap (18). A push rod return spring (19) is provided between the push rod base (15-3) and the push rod end cap (18).

4. The adaptive support device for directional drilling according to claim 1, characterized in that, The support rod is provided with a double-ear connector or a single-ear connector, a waist hole for the support rod, and an inner groove for the support rod. The waist hole of the support rod is located in the inner groove of the support rod; the push rod connector of the support push rod extends into the inner groove of the support rod, and the push rod pin hole of the support push rod is connected to the waist hole of the support rod through the sliding pin (14).

5. The adaptive support device for directional drilling according to claim 1, characterized in that, The outer sleeve of the support sleeve (3) is provided with multiple fixed support limiting covers (2) evenly distributed around its circumference. The bottom of the support body (11) is provided with a support limiting flange (11-1). The adaptive support (1) is limited in the radial direction of the outer sleeve of the support sleeve (3) by the support limiting flange (11-1).

6. A support method for a directional drilling adaptive support device according to any one of claims 1-5, characterized in that, include: Several adaptive support bodies (1) are arranged in the circumferential direction of a supporting outer sleeve (3); An inner cylinder cavity (42) with a propulsion working piston (7) is provided on the inner cylinder (4) provided inside the outer cylinder (3). A plurality of push rod cavities connected to the inner cylinder cavity (42) are provided on the support body (11) of the adaptive support (1). A support push rod (15) is provided in the push rod cavity, and one end of the support push rod (15) is connected to the support top rod. Two adjacent support top rods are rotatably connected. The propulsion piston (7) is driven to move to compress the hydraulic oil inside the inner cylinder cavity (42), and the hydraulic oil is used to drive the support push rod (15) to extend so as to drive the support top rod to move in the radial direction along the support outer sleeve (3).

7. The support method for a directional drilling adaptive support device according to claim 6, characterized in that, The push rod cavity is arranged along the axial direction of the support outer sleeve (3).

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