Drilling rig for transforming hot dry rock reservoir

Abstract

The invention relates to the technical field of drilling and transformation of hot dry rock reservoirs, in particular to a drilling rig for transformation of hot dry rock reservoirs, which comprises an oil pipe and a connector string mounted at the bottom of the oil pipe, the connector string is provided with an upper connector, a power nipple, a miniature drilling device and a drill bit which are sequentially connected and communicated with one another, the drilling rig comprises a drilling bit, a side wall nozzle is arranged on the drilling bit, a conveying piece is assembled in the drilling bit, and a plugging piece used for switching the liquid flow direction of the liquid conveying piece is arranged on the conveying piece. When the drilling rig used for transforming the hot dry rock reservoir is used, opening and closing of the side wall nozzle are controlled through mutual cooperation of the conveying piece and the plugging piece; liquid can be injected into multiple areas of the hot dry rock reservoir, accurate injection of different areas is achieved, the overall transformation effect, the heat exchange efficiency and the energy extraction efficiency are improved, liquid resources are distributed more reasonably, and when the bottom heat exchange efficiency needs to be improved, the liquid is intensively injected into the bottom, and heat transfer of the bottom is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of drilling and reforming hot dry rock reservoirs, and in particular to a drilling device for reforming hot dry rock reservoirs. Background Art

[0002] The device for drilling and transforming hot dry rock reservoirs is a combination of equipment specially used for drilling operations and implementing reservoir transformation in hot dry rock reservoirs. It is usually composed of drilling equipment, reservoir transformation tools, monitoring instruments and other parts. It can penetrate deep underground through powerful drilling capabilities, accurately reach the location of hot dry rock reservoirs, determine the depth, thickness and geological characteristics of the reservoir, and provide basic data for subsequent development and utilization.

[0003] When transforming hot dry rock reservoirs, nozzles are usually used to spray in specific directions of the hot dry rock reservoirs. However, this spraying method is relatively simple, which will cause some areas to be fully injected while other areas are insufficiently injected, thereby affecting the overall effect of reservoir transformation and reducing heat exchange efficiency and energy extraction efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the existing devices usually directly use nozzles to spray in a specific direction of the hot dry rock reservoir, but this spraying method is relatively single, which will cause some areas to be fully injected while other areas are insufficiently injected, thereby affecting the overall effect of the reservoir transformation and reducing the heat exchange efficiency and energy extraction efficiency. A drilling device for transforming the hot dry rock reservoir is now provided.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a drilling device for transforming a hot dry rock reservoir, comprising an oil pipe and a connecting joint string installed at the bottom of the oil pipe, the connecting joint string is provided with an upper joint, a power short joint, a micro drill and a drill bit which are sequentially connected and interconnected, the drill bit is equipped with a conveying member, and the conveying member is provided with a blocking member for switching the liquid flow direction of the liquid conveying member;

[0006] The conveying member includes a conduit, a connecting nozzle, a side wall nozzle, a closing cover and a base, one end of the conduit is arranged at an end of the drill bit close to the micro drill and are interconnected, the other end of the conduit, the base and the connecting nozzle are sequentially connected and interconnected, one end of the side wall nozzle is arranged on the outer peripheral wall of the conduit and are interconnected, the other end of the side wall nozzle extends to the through hole of the drill bit, the closing cover is axially slidably arranged on the base along the connecting nozzle, the closing cover is located at the bottom of the connecting nozzle and is mutually transmission-connected with the blocking member;

[0007] The plugging member includes a guide rail, a spring, a slider and a baffle. The guide rail is fixedly installed on the inner circumferential wall of the drill bit along the axial direction of the drill bit. The slider matches the guide rail and is slidably arranged with each other. One end of the spring is arranged on the guide rail, and the other end of the spring is arranged on the slider. The slider is fixedly connected to the closing cover, and the slider is in transmission connection with the baffle. The baffle is arranged between the other end of the side wall nozzle and the through hole of the drill bit. The baffle is used to block or open the side wall nozzle, and the spring is used to always keep the closing cover to block the connecting nozzle and the baffle to open the side wall nozzle. Compared with the prior art, this solution controls the opening and closing of the side wall nozzle by cooperating with the conveying member and the plugging member, and can inject liquid into multiple areas of the hot dry rock reservoir, realize precise injection into different areas, improve the overall effect of the transformation, heat exchange efficiency and energy extraction efficiency, and more reasonably allocate liquid resources. When it is necessary to improve the bottom heat exchange efficiency, the liquid is concentratedly injected into the bottom to enhance the heat transfer at the bottom.

[0008] In some preferred embodiments, a sliding plate is fixedly provided on the outer peripheral wall of the conduit, the sliding plate is located below the connecting nozzle, a connecting rod is fixedly connected to the sliding block, one end of the connecting rod is slidably provided in the sliding plate, an adjusting block is fixedly connected to the top of the connecting rod, an adjusting plate is provided between the adjusting block and the side wall nozzle, the adjusting plate is hinged in the drill bit, the baffle is arranged at one end of the adjusting plate and can slide and rotate on the adjusting plate, the adjusting block is abutted against one end of the adjusting plate away from the baffle, and the hinge point of the adjusting plate is located between the adjusting block and the baffle.

[0009] In order to prevent the baffle from rotating too far and being unable to reset, in some preferred embodiments, the top of the guide rail is used to limit the displacement of the baffle when the side wall nozzle is opened, and the baffle is always located between the other end of the side wall nozzle and the through hole of the drill bit. The displacement range of the baffle is limited by the guide rail, and the baffle is always limited between the other end of the side wall nozzle and the through hole of the drill bit. The baffle will not be separated from the other end of the side wall nozzle and the through hole of the drill bit, resulting in an over-rotation and inability to reset, thereby ensuring that the baffle opens or blocks the side wall nozzle in time.

[0010] In some preferred embodiments, a support rod is disposed in the sliding plate, a sliding hole matching the support rod is disposed on the connecting rod, and the support rod is disposed in the sliding hole.

[0011] In some preferred embodiments, both sides of the sliding plate are fixedly connected with fixing plates, and the fixing plates are fixedly arranged on the outer peripheral wall of the catheter.

[0012] In order to enable the closing cover to slide on the base, some preferred embodiments are that a sliding rod is provided on the base, and a stopper for limiting the displacement range of the closing cover is provided at one end of the sliding rod away from the base, and a sliding hole adapted for the sliding rod is provided on the closing cover, the sliding rod is slidably arranged in the sliding hole, and the closing cover is located between the stopper and the connecting nozzle.

[0013] In some preferred embodiments, there are four sliding bars.

[0014] In some preferred embodiments, the four sliding rods are evenly distributed along the circumference of the closing cover.

[0015] The beneficial effects of the present invention are as follows: when in use, a drilling device for transforming a hot dry rock reservoir of the present invention controls the opening and closing of the side wall nozzle through the cooperation of the conveying part and the sealing part, so as to inject liquid into multiple areas of the hot dry rock reservoir, realize precise injection into different areas, improve the overall effect of the transformation, the heat exchange efficiency and the energy extraction efficiency, and more reasonably allocate liquid resources. When it is necessary to improve the bottom heat exchange efficiency, the liquid is concentratedly injected into the bottom to enhance the heat transfer at the bottom, thus avoiding the problem that the existing device usually directly uses the nozzle to spray in a specific direction of the hot dry rock reservoir, but this spraying method is relatively single, which will cause some areas to be fully injected and other areas to be insufficiently injected, thereby affecting the overall effect of the reservoir transformation and reducing the heat exchange efficiency and the energy extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of the plugging member of the present invention;

[0019] Figure 3 It is a schematic diagram of the blocking member and the conveying member of the present invention;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the conveying member and the blocking member of the present invention;

[0021] Figure 5 This is a schematic diagram of the matching relationship between the blocking member and the conveying member of the present invention;

[0022] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0023] Figure 7 It is a schematic diagram of the conveying member of the present invention.

[0024] In the figure: 1. oil pipe; 2. connecting joint string; 3. upper joint; 4. power short section; 5. micro drill; 6. drill bit; 7. conveying member; 71. guide tube; 72. connecting nozzle; 73. side wall nozzle; 74. closing cover; 75. base; 76. sliding plate; 761. fixing plate; 77. sliding rod; 8. blocking member; 81. guide rail; 82. spring; 83. slider; 84. connecting rod; 841. support rod; 86. moving block; 87. adjusting block; 88. adjusting plate; 89. baffle. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with embodiments:

[0026] The present invention is not limited to the following specific embodiments. A person skilled in the art can implement the present invention in various other specific embodiments according to the contents disclosed in the present invention, or any simple changes or modifications made to the design structure and ideas of the present invention fall within the protection scope of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] like Figure 1-7As shown, a drilling device for transforming a hot dry rock reservoir comprises an oil pipe 1 and a connecting joint string 2 installed at the bottom of the oil pipe 1, the connecting joint string 2 is provided with an upper joint 3, a power short section 4, a micro-drill 5 and a drill bit 6 which are sequentially connected and interconnected, a conveying member 7 is installed in the drill bit 6, and a plugging member 8 for switching the liquid flow direction of the liquid conveying member 7 is provided on the conveying member 7, the upper joint 3 is fixedly installed at the bottom end of the connecting joint string 2, which plays a key role in connecting the connecting joint string 2 and the power short section 4, and ensures a stable connection between the entire device and the external oil pipe 1, can stably transmit power and liquid, and withstand the pressure and tension from the well, the power short section 4 is installed at the bottom of the upper joint 3, and provides power for the micro-drill 5 and the drill bit 6, and converts the power from the oil pipe 1 into a torque and propulsion force suitable for drilling, so that the micro-drill 5 and the drill bit 6 can efficiently perform drilling operations in the hot dry rock reservoir, and the performance of the power short section 4 directly affects the speed and efficiency of drilling;

[0030] The conveying member 7 includes a conduit 71, a connecting nozzle 72, a side wall nozzle 73, a closing cover 74 and a base 75. One end of the conduit 71 is arranged at one end of the drill bit 6 close to the micro drill 5 and are interconnected. The other end of the conduit 71, the base 75 and the connecting nozzle 72 are sequentially connected and interconnected. One end of the side wall nozzle 73 is arranged on the outer peripheral wall of the conduit 71 and is interconnected. The other end of the side wall nozzle 73 extends to the through hole of the drill bit 6. The closing cover 74 is slidably arranged on the base 75 along the axial direction of the connecting nozzle 72. The closing cover 74 is located at the bottom of the connecting nozzle 72 and is mutually transmission-connected with the blocking member 8.

[0031] The sealing member 8 includes a guide rail 81, a spring 82, a slider 83 and a baffle 89. The guide rail 81 is fixedly installed on the inner circumferential wall of the drill bit 6 along the axial direction of the drill bit 6. The slider 83 matches the guide rail 81 and is slidably arranged with respect to each other. One end of the spring 82 is arranged on the guide rail 81, and the other end of the spring 82 is arranged on the slider 83. The slider 83 and the closing cover 74 are fixedly connected with each other. The slider 83 is transmission-connected with the baffle 89. The baffle 89 is arranged between the other end of the side wall nozzle 73 and the through hole of the drill bit 6. The baffle 89 is used to block or open the side wall nozzle 73. The spring 82 is used to always keep the closing cover 74 to block the connecting nozzle 72 and the baffle 89 to open the side wall nozzle 73.

[0032] A sliding plate 76 is fixedly provided on the outer peripheral wall of the guide tube 71, and the sliding plate 76 is located below the connecting nozzle 72. A connecting rod 84 is fixedly connected to the slider 83, and one end of the connecting rod 84 is slidably provided in the sliding plate 76. An adjusting block 87 is fixedly connected to the top of the connecting rod 84. An adjusting plate 88 is provided between the adjusting block 87 and the side wall nozzle 73. The adjusting plate 88 is hinged in the drill bit 6. A baffle 89 is arranged at one end of the adjusting plate 88 and can slide and rotate on the adjusting plate 88. In this embodiment, the baffle 89 The specific structure of the adjustment plate 88 can be that a sliding shaft is fixed on the baffle 89, and a sliding groove is opened on the adjustment plate 88. The sliding shaft is slidably installed in the sliding groove, so that the baffle 89 can slide on the adjustment plate 88 and rotate on the adjustment plate 88. The adjustment block 87 is set at one end of the adjustment plate 88 away from the baffle 89. The hinge point of the adjustment plate 88 is located between the adjustment block 87 and the baffle 89. The slider 83 is fixedly connected with a moving block 86, and the moving block 86 is fixed to the outer peripheral wall of the closing cover 74.

[0033] The conduit 71 is the main channel for conveying liquid. It guides the liquid from the external oil pipe to the base 75 and the connecting nozzle 72 inside the drill bit 6. The two sides of the conduit 71 are fixedly connected to the sliding plate 76 and the fixing plate 761, which enhances the stability of the conduit 71 and prevents shaking or deformation during drilling. The connecting nozzle 72 is connected to the bottom of the base 75 to guide the liquid from the conduit 71 to the bottom of the well. The design of the connecting nozzle 72 can control the injection direction and flow rate of the liquid, so that the liquid can be more effectively injected into the hot dry rock reservoir. Through the coordinated arrangement of the conveying component 7 and the sealing component 8, liquid is injected into multiple areas of the hot dry rock reservoir, thereby improving the overall effect of the transformation, the heat exchange efficiency and the energy extraction efficiency. When it is necessary to inject liquid into the bottom of the drilling area, the pressure of the liquid injection is pressurized by an external pressurizing device. The liquid pressure becomes larger, and the liquid can push open the closing cover 74. The closing cover 74 moves downward to drive the moving block 86, and then the connecting rod 84 moves downward, and the connecting rod 84 drives the adjusting The block 87 moves downward, thereby driving the adjustment plate 88 to move upward, moving the baffle 89 to the position where the side wall nozzle 73 is closed, and realizing the closure of the side wall nozzle 73. When it is necessary to inject liquid into the side wall of the hot dry rock reservoir, the liquid injection pressure is reduced. Due to the rebound effect of the spring 82, the connecting rod 84 and the adjustment plate 88 will be driven to do opposite movements. At this time, the connecting nozzle 72 is blocked, and the side wall nozzle 73 is opened, so that the liquid can be injected into the side wall of the hot dry rock reservoir. The position of the baffle 89 is adjusted by adjusting the adjustment plate 88, the adjustment block 87 and other structures to control the opening and closing of the side wall nozzle 73, and precise injection into different areas is realized. The liquid resources can be allocated more reasonably. When it is necessary to improve the bottom heat exchange efficiency, the liquid is concentratedly injected into the bottom to enhance the heat transfer at the bottom. When it is necessary to improve the side wall heat exchange, the side wall nozzle 73 is opened for side wall injection to improve the heat exchange efficiency of the side wall area, thereby improving the heat exchange efficiency and energy extraction efficiency as a whole.

[0034] The two guide rails 81 are fixedly connected to the inner wall of the drill bit 6 to ensure the stable sliding of the slider 83. The design of the guide rail 81 ensures the stability and accuracy of the slider 83 during the up and down movement, so that the blocking member 8 can reliably control the opening and closing of the side wall nozzle 73. The spring 82 is fixedly connected to the inside of the guide rail 81 to provide elastic support for the slider 83. The elastic force of the spring 82 can keep the slider 83 in a certain position when not affected by external force. At the same time, when it is necessary to block the side wall nozzle 73, it can provide sufficient pressure to make the baffle 89 fit tightly against the side wall nozzle 73. The slider 83 is slidably connected to the inside of the guide rail 81 and is connected to the baffle 89 and the moving block 86 through the connecting rod 84. The movement of the slider 83 drives the movement of the baffle 89 and the moving block 86 to achieve the blocking and opening of the side wall nozzle 73. The design of the slider 83 needs to take into account the matching accuracy and friction with the guide rail 81 to ensure the sensitivity and reliability of the blocking member 8.

[0035] The top of the guide rail 81 is used to limit the displacement of the baffle 89 when the side wall nozzle 73 is opened, and the baffle 89 is always located between the other end of the side wall nozzle 73 and the through hole of the drill bit 6 .

[0036] A support rod 841 is disposed in the sliding plate 76 , a sliding hole matching the support rod 841 is disposed on the connecting rod 84 , and the support rod 841 is disposed in the sliding hole.

[0037] Both sides of the sliding plate 76 are fixedly connected with fixing plates 761 , and the fixing plates 761 are fixedly arranged on the outer peripheral wall of the conduit 71 .

[0038] A slide bar 77 is provided on the base 75. A stopper for limiting the displacement range of the closing cover 74 is provided at one end of the slide bar 77 away from the base 75. A sliding hole adapted to the slide bar 77 is provided on the closing cover 74. The slide bar 77 is slidably arranged in the sliding hole. The closing cover 74 is located between the stopper and the connecting nozzle 72. There are four slide bars 77, and the four slide bars 77 are evenly distributed along the circumference of the closing cover 74.

[0039] During installation and commissioning of the drilling device for transforming hot dry rock reservoirs, the upper joint 3 is fixedly installed at the bottom end of the connecting joint string 2, and then the power short section 4, the micro-drill 5, and the drill bit 6 are connected in sequence. At the same time, the guide tube 71, the connecting nozzle 72, the side wall nozzle 73, and the closing cover 74 of the conveying member 7 are assembled and installed inside the drill bit 6, and the guide rail 81, the spring 82, the slider 83, the connecting rod 84 and other components of the blocking member 8 are installed on the inner side wall of the drill bit 6; check whether the connection of each component is firm to ensure that the conveying member 7 and the blocking member 8 can work normally, check whether the installation of the sliding plate 76, the fixing plate 761, the sliding rod 77, the stopper and other components is stable, connect the assembled equipment to the oil pipe 1 through the upper joint 3 to ensure that the connection is tight and there is no leakage, adjust the blocking member 8, and adjust the position of the stopper 89 through the adjustment plate 88, the adjustment block 87 and other structures to make the side wall nozzle 73 in a closed state or adjust the opening degree as needed;

[0040] When in use, power is transmitted to the power nipple 4 through the oil pipe 1, the micro drill 5 and the drill bit 6 are started, and the hot dry rock reservoir is started to be drilled. When the drilling reaches the predetermined position, the drilling work is ended. At this time, the closing cover 74 is in a closed state, the connecting nozzle 72 is blocked, and the liquid is transported to the base 75 through the conduit 71 of the conveying member 7, and then the liquid is injected into the hot dry rock reservoir through the side wall nozzle 73. When it is necessary to inject liquid into the bottom of the drilling area, during the process of injecting liquid, the pressure of the liquid injection is pressurized by an external pressurizing device. As the pressure of the liquid increases, the liquid can push the closing cover 74 open. When the closing cover 74 moves downward, it will drive the moving block 86 to move downward. As the moving block 86 moves downward, the connecting rod 84 will also move downward. The downward movement of the connecting rod 84 will drive the adjusting block 87 to move downward, and then drive the adjusting plate 88 to move upward. The baffle 89 is moved to the position where the side wall nozzle 73 is closed, so that the side wall nozzle 73 is closed. When liquid needs to be injected into the side wall of the hot dry rock reservoir, the pressure of liquid injection is reduced. Due to the rebound effect of the spring 82, the connecting rod 84 and the adjustment plate 88 will be driven to do opposite movements. At this time, the connecting nozzle 72 is blocked and the side wall nozzle 73 is opened, so that liquid can be injected into the side wall of the hot dry rock reservoir. The position of the baffle 89 is adjusted by adjusting the adjustment plate 88, the adjustment block 87 and other structures to control the opening and closing of the side wall nozzle 73 to achieve precise injection into different areas; the drilling and reservoir transformation process is monitored in real time, and the drilling speed and liquid injection amount are adjusted by observing parameters such as pressure and flow to ensure the safety and effectiveness of the construction. When the reservoir transformation achieves the desired effect, the liquid injection is stopped, the equipment is shut down, and the equipment is removed from the hot dry rock reservoir for cleaning and maintenance.

[0041] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A drilling device for transforming hot dry rock reservoirs, characterized in that: The invention comprises an oil pipe (1) and a connecting joint string (2) installed at the bottom of the oil pipe (1), wherein the connecting joint string (2) is provided with an upper joint (3), a power short joint (4), a micro drill (5) and a drill bit (6) which are sequentially connected and communicated with each other, wherein a conveying member (7) is installed inside the drill bit (6), and a blocking member (8) is provided on the conveying member (7) for switching the liquid flow direction of the liquid conveying member (7); The conveying member (7) comprises a conduit (71), a connecting nozzle (72), a side wall nozzle (73), a closing cover (74) and a base (75); one end of the conduit (71) is arranged at one end of the drill bit (6) close to the micro drill (5) and are interconnected; the other end of the conduit (71), the base (75) and the connecting nozzle (72) are sequentially connected and interconnected; one end of the side wall nozzle (73) is arranged on the outer peripheral wall of the conduit (71) and are interconnected; the other end of the side wall nozzle (73) extends to the through hole of the drill bit (6); the closing cover (74) is slidably arranged on the base (75) along the axial direction of the connecting nozzle (72); the closing cover (74) is located at the bottom of the connecting nozzle (72) and is transmission-connected to the blocking member (8); The blocking member (8) comprises a guide rail (81), a spring (82), a slider (83) and a baffle (89); the guide rail (81) is fixedly mounted on the inner peripheral wall of the drill bit (6) along the axial direction of the drill bit (6); the slider (83) matches the guide rail (81) and is slidably arranged with respect to each other; one end of the spring (82) is arranged on the guide rail (81); the other end of the spring (82) is arranged on the slider (83); the slider (83) and the closing cover (74) are fixedly connected to each other; the slider (83) and the baffle (89) are transmission-connected; the baffle (89) is arranged between the other end of the side wall nozzle (73) and the through hole of the drill bit (6); the baffle (89) is used for blocking or opening the side wall nozzle (73); the spring (82) is used for always keeping the closing cover (74) blocking the connecting nozzle (72) and the baffle (89) opening the side wall nozzle (73).

2. A drilling device for transforming hot dry rock reservoirs according to claim 1, characterized in that: A sliding plate (76) is fixedly arranged on the outer peripheral wall of the conduit (71), and the sliding plate (76) is located below the connecting nozzle (72). A connecting rod (84) is fixedly connected to the sliding block (83), and one end of the connecting rod (84) is slidably arranged in the sliding plate (76). An adjusting block (87) is fixedly connected to the top of the connecting rod (84). An adjusting plate (88) is arranged between the adjusting block (87) and the side wall nozzle (73). The adjusting plate (88) is hinged in the drill bit (6). The baffle (89) is arranged at one end of the adjusting plate (88) and can slide and rotate on the adjusting plate (88). The adjusting block (87) is abutted against one end of the adjusting plate (88) away from the baffle (89), and the hinge point of the adjusting plate (88) is located between the adjusting block (87) and the baffle (89).

3. A drilling device for transforming hot dry rock reservoirs according to claim 2, characterized in that: The top of the guide rail (81) is used to limit the displacement of the baffle (89) when the side wall nozzle (73) is opened, and the baffle (89) is always located between the other end of the side wall nozzle (73) and the through hole of the drill bit (6).

4. A drilling device for transforming hot dry rock reservoirs according to claim 2, characterized in that: A support rod (841) is arranged in the sliding plate (76), a sliding hole matching the support rod (841) is arranged on the connecting rod (84), and the support rod (841) is arranged in the sliding hole.

5. The drilling device for transforming hot dry rock reservoir according to claim 2, characterized in that: Both sides of the sliding plate (76) are fixedly connected with fixing plates (761), and the fixing plates (761) are fixedly arranged on the outer peripheral wall of the conduit (71).

6. The drilling device for transforming hot dry rock reservoir according to claim 1, characterized in that: The base (75) is provided with a slide bar (77), and one end of the slide bar (77) away from the base (75) is provided with a stopper for limiting the displacement range of the closing cover (74). The closing cover (74) is provided with a sliding hole matched with the slide bar (77), and the slide bar (77) is slidably arranged in the sliding hole. The closing cover (74) is located between the stopper and the connecting nozzle (72).

7. The drilling device for transforming hot dry rock reservoir according to claim 6, characterized in that: There are four sliding bars (77).

8. The drilling device for transforming hot dry rock reservoir according to claim 7, characterized in that: The four sliding rods (77) are evenly distributed along the circumference of the closing cover (74).

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