Deep sampling device for shale gas exploration to facilitate penetration of shale

Abstract

The application provides a deep sampling device for shale gas exploration, and relates to the technical field of shale gas detection, which comprises a square base, lifting rings are fixedly arranged at the top corners of the square base, side lead screws are rotatably arranged on the upper middle parts of the left side, the right side and the front side of the square base, side moving motors are arranged at the outer ends of the side lead screws to provide driving, a guide sliding groove is fixedly arranged at the lower part of the square base, a gas collecting bin and a closing bin are slidably arranged in the guide sliding groove, and a circular hole is formed in the top of the gas collecting bin and the closing bin, the application integrates automatic control of multiple steps, can realize automatic drilling, sampling and closing control, and can realize automatic operation in the whole process, thereby providing convenience for sampling, the drill rod has drilling and triggering functions, can trigger subsequent sampling and closing functions, can realize drilling operation in deep underground, and solves the problem of inconvenient automatic step-by-step processing of the existing sampling device.

Description

Technical Field

[0001] The present invention relates to the technical field of shale gas detection, and in particular to a deep sampling device for shale gas exploration that is convenient for penetrating shale. Background Art

[0002] Shale gas refers to unconventional natural gas that exists in organic-rich mudstone and its interlayers, and exists mainly in adsorbed and free states. It is mainly composed of methane and is a clean and efficient energy resource and chemical raw material. It can only be extracted when the drill bit penetrates the shale layer.

[0003] The sampling device currently used is operated in steps. It is necessary to drill a hole with a drill rig and then insert the sampling structure to extract the gas sample. After extraction, it is inconvenient to seal the drill hole position, which may cause leakage. It lacks automated step-by-step control functions. Summary of the Invention

[0004] In view of this, the present invention addresses the deficiencies in the above-mentioned prior art and provides a deep sampling device for shale gas exploration that is easy to penetrate shale.

[0005] The present invention provides a deep sampling device for shale gas exploration that is convenient for penetrating shale, specifically comprising: a square base, wherein the top corners of the square base are fixedly provided with hanging rings; the left and right sides of the square base are both open structures, and the left and right sides and the upper middle of the front side of the square base are rotatably provided with side screws; the outer ends of the side screws are provided with side movement motors for driving; a guide chute is fixedly provided at the lower part of the interior of the square base, and an air collecting chamber and a closing chamber are slidably provided in the guide chute, and the tops of the air collecting chamber and the closing chamber are both provided with round holes; the outer ends of the air collecting chamber are provided with side movement motors for driving; a guide chute is fixedly provided at the lower part of the interior of the square base, and an air collecting chamber and a closing chamber are slidably provided in the guide chute, and a round hole is provided on the top of the air collecting chamber and the closing chamber; A connecting frame A is integrally provided, and a connecting frame B is integrally provided outside the closed chamber. The tops of the connecting frame A and the connecting frame B are fixed with nut seats through pin connection, and the nut seats are respectively threadedly connected to a group of side screws; a front and rear guiding guide slide is fixedly provided on the top of the square base, and an inner slide seat is slidingly provided inside the guide slide; the inner slide seat is threadedly connected to a group of side screws; a moving piston is slidingly provided inside the air collecting chamber, and a rubber ring is fixedly provided on the side of the moving piston; a one-way valve is fixedly provided in the middle of the bottom of the air collecting chamber and in the middle of the moving piston.

[0006] Optionally, a vertical guide rod is vertically fixed on the rear side of the square base, a control block is slidingly provided on the outside of the vertical guide rod, the front side of the control block turns downward, and a horizontal groove is provided in the middle of the front side of the control block; a vertical lead screw is vertically rotated on the rear side of the square base, and the vertical lead screw is threadedly connected to the control block; a drive motor is fixedly provided on the top rear side of the square base, and the drive motor is transmission-connected to the vertical lead screw.

[0007] Optionally, a through slot is provided in the middle of the top of the square base, and an accommodating slot is provided above the through slot and extends toward the front and rear sides.

[0008] Optionally, a vertical channel is fixedly connected to the top of the square base, an electric cylinder is fixedly arranged on the upper part of the vertical channel, a transmission frame is fixedly arranged on the telescopic end of the electric cylinder, a drill rod is rotatably arranged below the transmission frame, a drilling motor is fixedly arranged inside the transmission frame, and the drilling motor is transmission-connected to the drill rod.

[0009] Optionally, two groups of vertical sliding rods are fixedly provided on the front side of the bottom of the inner slide, an inner slide is slidingly provided outside the vertical sliding rods, an air pump is integrally provided at the bottom of the inner slide, and staggered air holes are provided around the outside of the air pump; a channel is provided at the top of the inner slide to connect to the bottom of the air pump, and a cross beam is integrally provided in the middle of the top of the channel; the middle of the rear end of the inner slide protrudes outward, and the protruding position can be matched with the front side of the control block; a magnet is provided inside the inner slide to make the inner slide adsorbed and fixed to the bottom of the inner slide.

[0010] Optionally, a magnetic ring is fixedly provided on the upper part of the interior of the closed chamber; an iron circular plate is slidably provided inside the closed chamber, and the iron circular plate can be adsorbed and fixed under the magnetic ring.

[0011] Optionally, an iron core rod is integrally provided in the middle of the bottom of the iron circular plate, a rubber sleeve is provided on the outer shell of the iron core rod, and threaded pins are provided at the bottom of the iron core rod and the rubber sleeve for fixed connection.

[0012] Optionally, the tops of the movable piston and the closing chamber are fixedly provided with gaskets; the bottom of the movable piston is provided with a spring; the inner slide seat, the air collecting chamber and the closing chamber can all be moved to the bottom of the vertical channel and vertically aligned with the drill pipe.

[0013] The beneficial effects are as follows:

[0014] The present invention integrates multiple steps into automatic control, which can realize the control of automatic drilling, sampling and sealing, and can realize automated operation throughout the whole process, which provides convenience for sampling; the drill rod has both drilling and triggering functions, which can trigger subsequent sampling and sealing functions, and can realize drilling operations deeper underground.

[0015] The negative pressure pumping mechanism of the mobile piston and the one-way valve provides a collection function. Through the control of the drill pipe, shale gas can be automatically extracted to avoid manual intervention, improve sampling efficiency and gas purity, and can be used in conjunction with the gas cylinder for stable pumping. The plug-in combination structure of the inner slide and the control block, combined with the transmission of the vertical screw, can achieve precise positioning and vertical insertion of the pumping cylinder, ensuring coaxiality with the borehole and providing a guiding effect for pumping.

[0016] The sealing design of the iron round plate and the rubber sleeve can prevent gas leakage. Through the mechanical pressure of the iron core rod and the elastic deformation of the rubber sleeve, the borehole gap can be tightly filled, effectively blocking the gas leakage channel, preventing the gas in the rock formation from leaking out after sampling, and improving safety. The process is also triggered by the drill rod, which is easy to operate, and the iron round plate can be easily replaced quickly, which is convenient for multiple sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present invention is shown;

[0018] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of an embodiment of the present invention is shown;

[0019] Figure 3 It shows a schematic diagram of a three-dimensional cross-sectional structure of a cross-shaped bin in an embodiment of the present invention;

[0020] Figure 4 Shows an embodiment of the present invention Figure 3 A structural diagram from another angle;

[0021] Figure 5 Shows an embodiment of the present invention Figure 3 Schematic diagram of the side elevation structure;

[0022] Figure 6 Shows an embodiment of the present invention Figure 3 Schematic diagram of the disassembled structure;

[0023] Figure 7 A schematic diagram of a three-dimensional cross-sectional structure of an air collecting bin in an embodiment of the present invention is shown;

[0024] Figure 8 The figure shows a schematic diagram of the three-dimensional structure of the iron circular plate in the embodiment of the present invention.

[0025] List of reference numerals:

[0026] 1. Square base; 101. Lifting ring; 102. Cross-shaped bin; 103. Vertical guide rod; 104. Control block; 105. Vertical lead screw; 106. Drive motor; 107. Side lead screw; 108. Side shift motor; 109. Guide chute; 110. Through slot; 111. Receiving slot; 2. Vertical channel; 201. Electric cylinder; 202. Transmission frame; 203. Drill rod; 204. Drilling motor; 3. , guide slide; 301, inner slide seat; 302, vertical slide rod; 303, inner slide; 304, vacuum pump; 4, silicone pad; 5, air collecting chamber; 501, connecting frame A; 502, movable piston; 503, one-way valve; 6, closing chamber; 601, connecting frame B; 602, magnetic ring; 7, iron round plate; 701, iron core rod; 702, rubber sleeve; 703, threaded pin; 8, nut seat; 9, gasket. DETAILED DESCRIPTION

[0027] In order to make the purpose, solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0028] Example 1: Please refer to the accompanying drawings in the specification. Figures 1 to 8 As shown:

[0029] The present invention proposes a deep sampling device for shale gas exploration that is easy to penetrate shale, comprising: a square base 1, with hanging rings 101 fixedly provided at the top corners of the square base 1; the left and right sides of the square base 1 are both open structures, and side screws 107 are rotatably provided on the left and right sides and the upper middle of the front side of the square base 1; side movement motors 108 are provided at the outer ends of the side screws 107 to provide drive; a guide slot 109 is fixedly provided at the lower part of the interior of the square base 1, and an air collecting chamber 5 and a closing chamber 6 are slidably provided in the guide slot 109, and the tops of the air collecting chamber 5 and the closing chamber 6 are both provided with round holes; a connecting frame A is integrally provided on the outside of the air collecting chamber 5 501, a connecting frame B601 is integrally provided outside the closed chamber 6, and the tops of the connecting frames A501 and B601 are fixedly provided with nut seats 8 through pin connection, and the nut seats 8 are respectively threadedly connected to a group of side screws 107; a front and rear guiding guide slide 3 is fixedly provided above the part of the square base 1, and an inner slide seat 301 is slidingly provided inside the guide slide 3; the inner slide seat 301 is threadedly connected to a group of side screws 107; a movable piston 502 is slidingly provided inside the air collecting chamber 5, and a rubber ring is fixedly provided on the side of the movable piston 502; a one-way valve 503 is fixedly provided in the middle of the bottom of the air collecting chamber 5 and in the middle of the movable piston 502.

[0030] Among them, a vertical guide rod 103 is vertically fixed on the rear side of the square base 1, and a control block 104 is slidingly provided on the outside of the vertical guide rod 103. The front side of the control block 104 turns downward, and a horizontal groove is provided in the middle of the front side of the control block 104; a vertical screw 105 is vertically rotated on the rear side of the square base 1, and the vertical screw 105 is threadedly connected to the control block 104; a drive motor 106 is fixedly provided on the top rear side of the square base 1, and the drive motor 106 is transmission-connected to the vertical screw 105.

[0031] A through slot 110 is provided in the middle of the top of the square base 1 , and an accommodating slot 111 is provided above the through slot 110 and extending toward the front and rear sides.

[0032] Among them, the top of the square base 1 is fixedly connected to the vertical channel 2, the electric cylinder 201 is fixedly set on the upper part of the vertical channel 2, the telescopic end of the electric cylinder 201 is fixedly set with a transmission frame 202, and a drill rod 203 is rotatably set below the transmission frame 202. A drilling motor 204 is fixedly set inside the transmission frame 202, and the drilling motor 204 is transmission-connected to the drill rod 203.

[0033] Among them, two groups of vertical slide bars 302 are fixedly provided on the front side of the bottom of the inner slide 301, and an inner slide 303 is slidingly provided outside the vertical slide bars 302, and an air pump 304 is integrally provided at the bottom of the inner slide 303, and the air pump 304 is surrounded by staggered air holes; a channel is provided at the top of the inner slide 303 to connect to the bottom of the air pump 304, and a cross beam is integrally provided in the middle of the top of the channel; the middle of the rear end of the inner slide 301 protrudes outward, and the protruding position can be matched with the front side of the control block 104; a magnet is provided inside the inner slide 303 to make the inner slide 303 adsorbed and fixed to the bottom of the inner slide 301.

[0034] A magnetic ring 602 is fixedly provided on the upper part of the closed chamber 6 ; an iron circular plate 7 is slidably provided inside the closed chamber 6 , and the iron circular plate 7 can be adsorbed and fixed below the magnetic ring 602 .

[0035] An iron core rod 701 is integrally provided in the middle of the bottom of the iron circular plate 7 , and a rubber sleeve 702 is provided on the outer cover of the iron core rod 701 . A threaded pin 703 is provided at the bottom of the iron core rod 701 and the rubber sleeve 702 to fix them together.

[0036] Among them, the top of the movable piston 502 and the closing chamber 6 are fixedly provided with a gasket 9; the bottom of the movable piston 502 is provided with a spring; the inner sliding seat 301, the air collecting chamber 5 and the closing chamber 6 can all be moved to the bottom of the vertical channel 2 and vertically aligned with the drill rod 203.

[0037] like Figures 1-8 As shown, preliminary preparation is crucial for shale gas sampling operations. First, professional excavation tools must be used to accurately construct a vertical construction channel. The channel diameter must be compatible with subsequent equipment. During the excavation process, the depth and verticality must be strictly controlled to ensure that the hydraulic layer can be accurately exposed. After the hydraulic layer is exposed, its surface must be cleaned and inspected to confirm that it meets the conditions for subsequent operations.

[0038] Next, proceed to the equipment installation steps;

[0039] Reliably connect the top of the lifting ring 101 to a high-strength lifting cable. The lifting cable must undergo a load-bearing test to ensure that the safety factor meets the standard. Then, by paying out the wire, the square base 1 is lowered smoothly downward. During the descent, the verticality and descent speed must be monitored in real time. When the base approaches the top of the shale, the position is slowly adjusted until the silicone pad 4 evenly contacts the shale surface and forms a stable support. The silicone pad 4 has good elasticity and sealing properties, which can effectively buffer the base pressure and prevent gas leakage. According to the specific needs of the sampling operation, a counterweight is reasonably set above the cross-shaped chamber 102. The selection of the counterweight must be accurately calculated according to the geological conditions and equipment load to ensure the stability of the equipment during subsequent operations.

[0040] During the drilling operation, the drilling motor 204 is started. The motor must have high speed and strong power output capability to drive the drill rod 203 to rotate at high speed. The drill rod 203 is made of wear-resistant material, and its drill bit design conforms to the geological characteristics of shale and can produce a high-efficiency drilling effect. While rotating and drilling, the electric cylinder 201 is started. The propulsion speed and force of the electric cylinder 201 can be precisely adjusted. By pushing the transmission frame 202 downward, the drill rod 203 is smoothly lowered to drill. During the drilling process, parameters such as the drilling depth, motor current, and hydraulic system pressure must be monitored in real time to ensure the quality of the drilling. After the drilling is completed, the electric cylinder 201 is reset, and the transmission frame 202 is slowly raised through precise control, so that the drill rod 203 is smoothly extracted from the rock formation. During the extraction process, drill cuttings must be prevented from falling and clogging the drill hole.

[0041] Then the sampling device is moved and docked; the front side side movement motor 108 is started, and the motor drives the side screw 107 to rotate through the gear transmission, so that the inner slide 301 moves backward; during the movement process, when the inner slide 301 accurately moves to the bottom of the vertical channel 2, it is ensured that the rear end of the inner slide 303 is accurately inserted into the front side of the control block 104, thereby forming a stable combined control structure; at this time, the drive motor 106 is started to drive the vertical screw 105 to rotate, and the vertical screw 105 drives the control block 104 to descend smoothly through the threaded transmission, thereby pressing the inner slide 303 downward, so that the vacuum cylinder 304 passes through the through groove 110 and is accurately inserted into the hole drilled by the shale; at the same time, the inner slide 303 accurately fits and docks in the through groove 110 and the accommodating groove 111, ensuring that it does not affect the movement of the gas collection chamber 5;

[0042] During the shale gas extraction process, the side shift motor 108 on the same side as the gas collecting chamber 5 is started, driving the side lead screw 107 connected thereto to rotate, and through the transmission of the nut seat 8, the gas collecting chamber 5 is accurately moved to the top of the inner slide 303; at this time, the electric cylinder 201 is started to push the drill rod 203 downward. This time, the drill rod 203 does not rotate. Its descending process should be smooth and accurately contact the gasket 9 on the top of the moving piston 502, and then the moving piston 502 is pressed downward; the air under the moving piston 502 is discharged upward through the one-way valve 503 in the middle under the action of pressure; then the drill rod 203 is reset and raised, and the moving piston 502 is automatically raised under the action of the spring below it, thereby generating negative pressure in the gas collecting chamber 5; under the action of negative pressure, shale gas is extracted from the one-way valve 503 below, passes through the suction cylinder 304 and the one-way valve 503 below and enters the interior of the gas collecting chamber 5;

[0043] After sampling is completed, the gas collection chamber 5 is reset, and the vertical screw 105 is rotated by the reverse drive motor 106 to raise the control block 104. The inner slide 303 is lifted by the control block 104 and securely fixed under the inner slide seat 301 by magnetic attraction. At the same time, the air pump 304 is smoothly pulled out from the shale drilling position.

[0044] To prevent shale gas leakage, the side shift motor 108 on the same side as the sealing chamber 6 is started, driving the connected side screw 107 to rotate, pushing the screw nut 8 to move the sealing chamber 6 to the top of the through slot 110; the electric cylinder 201 is started again to push the drill rod 203 downward, and the drill rod 203 contacts the gasket 9 on the top of the iron circular plate 7. The gasket 9 and the iron circular plate 7 are pushed downward, so that the iron core rod 701 and the rubber sleeve 702 with good sealing performance are accurately inserted into the drilled hole, thereby tightly blocking the shale hole;

[0045] Finally, prepare for equipment recovery and replacement; reel in the lifting cable to slowly lift the square base 1, and keep the equipment balanced during the lifting process; then remove the pin in the nut seat 8, and smoothly pull out the air collecting chamber 5 and the closing chamber 6 from both sides of the square base 1 to complete the recovery operation; when placing the new air collecting chamber 5, make sure it is installed in place, install a new iron round plate 7 in the closing chamber 6, and firmly fix the iron round plate 7 through the strong adsorption effect of the magnetic ring 602, and prepare for reuse.

[0046] Example 2: Based on Example 1, the silicone pad 4 can be replaced by a component with the same function, such as an air bag or a liquid bag, which can also provide an adaptability effect and ensure the stability of the square base 1.

[0047] Example 3: Based on Example 1, in order to ensure the stability of drilling, counterweights can be added at any position outside the square base 1 or the cross-shaped bin 102 that does not affect sampling to ensure that the gravity distribution of the square base 1 is balanced.

[0048] Specific usage and function of this embodiment: In the present invention, it is necessary to first use an excavation tool to dig a construction channel for sampling to expose the hydraulic layer, then connect the top of the lifting ring 101 to the lifting cable, and lower the square base 1 downward to the top of the shale, using the silicone pad 4 for contact support; and set a counterweight above the cross-shaped bin 102 as needed;

[0049] The drilling motor 204 is started to drive the drill rod 203 to rotate at high speed, producing a drilling effect. Then, the electric cylinder 201 is started to push the transmission frame 202 downward, and the drill rod 203 is lowered to drill. After the drilling is completed, the electric cylinder 201 is reset to raise the transmission frame 202, and the drill rod 203 is pulled out of the rock formation.

[0050] Then the front side lateral movement motor 108 is started to drive the side screw 107 to rotate and move the inner slide 301 backward. When the inner slide 301 moves to the bottom of the vertical channel 2, the rear end of the inner slide 303 is plugged into the front side of the control block 104 to form a combined control structure. At this time, the drive motor 106 is started to drive the vertical screw 105 to rotate, and the vertical screw 105 drives the control block 104 to descend, pressing the inner slide 303 downward, and the vacuum cylinder 304 is inserted into the hole drilled in the shale through the through groove 110; at the same time, the inner slide 303 is matched and docked in the through groove 110 and the receiving groove 111;

[0051] Then the side shift motor 108 on the same side as the air collecting bin 5 is started, driving the side lead screw 107 connected thereto to rotate, pushing the nut seat 8 to move the air collecting bin 5 to the top of the inner slide 303, at this time the electric cylinder 201 is started to push the drill rod 203 downward, the drill rod 203 does not rotate, the drill rod 203 descends and contacts the gasket 9 on the top of the moving piston 502, and then presses the moving piston 502 downward, and the air under the moving piston 502 is discharged upward through the one-way valve 503 in the middle of the moving piston 502, and then resets and raises the drill rod 203, and the moving piston 502 automatically rises by the spring below it, generating negative pressure, extracting shale gas from the one-way valve 503 below, and the shale gas passes through the suction cylinder 304 and the one-way valve 503 below and enters the interior of the air collecting bin 5;

[0052] After sampling is completed, the air collection chamber 5 is reset, and the reverse drive motor 106 drives the vertical screw 105 to rotate to raise the control block 104. The control block 104 is used to lift the inner slide 303 and fix the inner slide 303 under the inner slide seat 301 by magnetic attraction. At the same time, the air pump 304 is pulled out of the shale drilling position.

[0053] The side shift motor 108 on the same side is started to drive the connected side screw 107 to rotate, pushing the screw nut 8 to move the sealing chamber 6 to the top of the through slot 110. The electric cylinder 201 is started again to push the drill rod 203 downward. The drill rod 203 contacts the backing ring 9 on the top of the iron circular plate 7. The backing ring 9 and the iron circular plate 7 are pushed downward, and the iron core rod 701 and the rubber sleeve 702 are inserted into the drilled hole to block the shale hole and prevent shale gas leakage.

[0054] Then reel in the lifting cable to lift the square base 1, remove the pin in the nut seat 8, pull out the air collecting chamber 5 and the closing chamber 6 from both sides of the square base 1 to complete the recycling, place a new air collecting chamber 5, install a new iron round plate 7 in the closing chamber 6, and fix the iron round plate 7 by adsorption through the magnetic ring 602, so that it can be used again.

Claims

1. A deep sampling device for shale gas exploration that is convenient for penetrating shale, characterized in that: include: A square base (1), wherein the top corners of the square base (1) are fixedly provided with hanging rings (101); the left and right sides of the square base (1) are both open structures, and the left and right sides and the upper middle of the front side of the square base (1) are rotatably provided with side screws (107); the outer ends of the side screws (107) are provided with side shift motors (108) to provide drive; a guide chute (109) is fixedly provided at the lower part of the interior of the square base (1), and an air collecting bin (5) and a closing bin (6) are slidably provided in the guide chute (109), and the tops of the air collecting bin (5) and the closing bin (6) are both provided with round holes; a connecting frame A (501) is integrally provided on the outside of the air collecting bin (5), and a connecting frame A (501) is integrally provided on the outside of the closing bin (6). A connecting frame B (601) is provided, and the tops of the connecting frames A (501) and the connecting frame B (601) are both fixedly provided with nut seats (8) through pin connection, and the nut seats (8) are respectively threadedly connected to a group of side screws (107); a front and rear guiding guide slide (3) is fixedly provided above the bottom of the square base (1), and an inner slide seat (301) is slidably provided inside the guide slide (3); the inner slide seat (301) is threadedly connected to a group of side screws (107); a movable piston (502) is slidably provided inside the air collecting chamber (5), and a rubber ring is fixedly provided on the side of the movable piston (502); a one-way valve (503) is fixedly provided in the middle of the bottom of the air collecting chamber (5) and in the middle of the movable piston (502).

2. The deep sampling device for shale gas exploration that is easy to penetrate shale as claimed in claim 1, characterized in that: A vertical guide rod (103) is fixedly provided on the rear side of the square base (1), a control block (104) is slidably provided on the outside of the vertical guide rod (103), the front side of the control block (104) is turned downward, and a horizontal groove is provided in the middle of the front side of the control block (104); a vertical lead screw (105) is provided on the rear side of the square base (1) for vertical rotation, and the vertical lead screw (105) is threadedly connected to the control block (104); a driving motor (106) is fixedly provided on the rear side of the top of the square base (1), and the driving motor (106) is transmission-connected to the vertical lead screw (105).

3. The deep sampling device for shale gas exploration that is easy to penetrate shale as claimed in claim 1, characterized in that: A through slot (110) is provided in the middle of the top of the square base (1), and an accommodating slot (111) is provided above the through slot (110) and extending toward the front and rear sides.

4. The deep sampling device for shale gas exploration that is easy to penetrate shale as claimed in claim 1, characterized in that: The top of the square base (1) is fixedly connected to a vertical channel (2), an electric cylinder (201) is fixedly arranged above the interior of the vertical channel (2), a transmission frame (202) is fixedly arranged at the telescopic end of the electric cylinder (201), a drill rod (203) is rotatably arranged below the transmission frame (202), a drilling motor (204) is fixedly arranged inside the transmission frame (202), and the drilling motor (204) is transmission-connected to the drill rod (203).

5. The deep sampling device for shale gas exploration that is easy to penetrate shale as claimed in claim 1, characterized in that: Two groups of vertical slide bars (302) are fixedly provided on the front side of the bottom of the inner slide (301), an inner slide (303) is slidably provided outside the vertical slide bars (302), an air pump (304) is integrally provided on the bottom of the inner slide (303), and staggered air holes are provided around the outer periphery of the air pump (304); a channel is provided on the top of the inner slide (303) and connected to the bottom of the air pump (304), and a cross beam is integrally provided in the middle of the top of the channel; the middle of the rear end of the inner slide (301) protrudes outward, and the protruding position can be matched with the front side of the control block (104); a magnet is provided inside the inner slide (303) so that the inner slide (303) is adsorbed and fixed to the bottom of the inner slide (301).

6. The deep sampling device for shale gas exploration that is easy to penetrate shale as claimed in claim 1, characterized in that: A magnetic ring (602) is fixedly provided on the upper part of the interior of the closed chamber (6); an iron circular plate (7) is slidably provided on the interior of the closed chamber (6), and the iron circular plate (7) can be adsorbed and fixed below the magnetic ring (602).

7. The deep sampling device for shale gas exploration that is convenient for penetrating shale as claimed in claim 6, characterized in that: An iron core rod (701) is integrally provided in the middle of the bottom of the iron circular plate (7), a rubber sleeve (702) is provided on the outer cover of the iron core rod (701), and a threaded pin (703) is provided at the bottom of the iron core rod (701) and the rubber sleeve (702) for fixed connection.

8. The deep sampling device for shale gas exploration that is convenient for penetrating shale as claimed in claim 4, characterized in that: The tops of the movable piston (502) and the closed chamber (6) are fixedly provided with gaskets (9); the bottom of the movable piston (502) is provided with a spring; the inner slide seat (301), the air collecting chamber (5) and the closed chamber (6) are all capable of moving to the bottom of the vertical channel (2) and vertically aligning with the drill rod (203).

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