A logging drill pipe and a logging device for engineering geological exploration of horizontal directional drilling

Abstract

The present invention relates to the technical field of geotechnical engineering exploration equipment, and discloses a horizontal directional drilling engineering geological exploration logging drill pipe and a logging device, which comprise a plurality of drill pipe bodies. A first cable groove is axially formed in each drill pipe body. A first joint is fixed at one end of the drill pipe body, and a second joint is fixed at the other end. A joint groove is formed in the second joint. A limiting ring is coaxially and slidably sleeved on the outer peripheral side of the second joint, and a second cable groove is axially formed in the outer wall of the limiting ring. The first joint of one drill pipe body is stuck in the joint groove of the adjacent drill pipe body, and the limiting ring slides axially along the second joint, so that both the first joint and the second joint are stuck in the limiting ring. The present invention can realize the rapid installation and disassembly of the drill pipe, shorten the tripping time; when connecting a new drill pipe, it is not necessary to disconnect the connection of the logging cable, greatly saving the threading time, improving the logging efficiency, ensuring the continuity of the logging signal transmission, reducing the signal attenuation caused by the cable joint, and improving the accuracy of the logging result.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical engineering investigation equipment, and particularly to a logging drill pipe and a logging device for horizontal directional drilling engineering geological investigation. Background Art

[0002] Horizontal directional drilling engineering geological investigation is an investigation method that uses horizontal directional drilling technology to drill an ultra-long horizontal exploration hole along the designed trajectory of a tunnel, and combines in-hole testing technologies such as hydraulic fracturing, comprehensive logging, and downhole television to comprehensively and truly reveal the geological information of the tunnel surrounding rock. Due to technical limitations, at present, during the comprehensive logging of horizontal exploration holes, the drilling and logging are mostly separated. That is, after drilling, coring, hole flushing, and hydraulic fracturing tests are completed, all drill pipes and equipment in the hole are withdrawn, the drill bit is replaced with a geophysical comprehensive logging probe, connected to the front end of the drill pipe, and then slowly pushed into the bottom of the hole using the drill pipe for logging.

[0003] Currently, alloy steel drill pipes with threaded joints used during drilling are still used for the comprehensive logging of horizontal exploration holes. However, due to the long distance of the horizontal exploration holes, connecting the drill pipes with threads is time-consuming and energy-consuming. In addition, as the logging distance increases, for each new drill pipe connected, it is necessary to disconnect the connection between the in-hole logging cable and the control equipment of the logging probe, connect a new cable slightly longer than the new drill pipe to the end of the original cable, then use iron wire to pass the new cable through the inside of the new drill pipe, and reconnect it to the control equipment. This method of cable layout has cumbersome steps, resulting in low logging efficiency for long-distance horizontal exploration holes. At the same time, the transmitted signal is prone to large attenuation due to too many cable joints, affecting the accuracy of the logging results. Summary of the Invention

[0004] The purpose of the present invention is to provide a logging drill pipe and a logging device for horizontal directional drilling engineering geological investigation to solve the problems that the existing drill pipes with threaded joints used during the comprehensive logging of horizontal exploration holes are time-consuming and energy-consuming, the cable layout steps are cumbersome, resulting in low logging efficiency for horizontal exploration holes, and the transmitted signal is prone to large attenuation due to too many cable joints.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] One aspect of the present invention is to provide a logging drill pipe for horizontal directional drilling engineering geological investigation, including:

[0007] A plurality of drill pipe bodies, each of the drill pipe bodies is axially provided with a first cable groove, one end of the drill pipe body is fixed with a first joint, the other end of the drill pipe body is fixed with a second joint, the second joint is provided with a joint groove adapted to the first joint, the groove diameter of the joint groove faces the outside of the second joint in the radial direction, and a limiting ring is coaxially and slidably sleeved on the outer peripheral side of the second joint, and a second cable groove is axially provided on the outer wall of the limiting ring;

[0008] The first joint of one of the drill pipe bodies is stuck in the joint groove of the adjacent drill pipe body, and the limiting ring slides axially along the second joint, so that both the first joint and the second joint are stuck in the limiting ring.

[0009] Preferably, fixing mechanisms are arranged at both ends of the first cable groove, and the fixing mechanisms form an S-shaped wiring channel in the first cable groove.

[0010] Preferably, the fixing mechanism includes a first fixing block and a second fixing block. The first fixing block and the second fixing block are arranged at intervals along the groove length direction of the first cable groove. The first fixing block is fixed on one groove wall of the first cable groove, and the second fixing block is fixed on the other groove wall of the first cable groove. The first fixing block, the second fixing block and the two groove walls of the first cable groove form the S-shaped wiring channel.

[0011] Preferably, a first limiting block is fixed on the first joint, a second limiting block is fixed on the second joint, a limiting groove is axially formed on the inner wall of the limiting ring, the limiting groove is circumferentially misaligned with the second cable groove, and the groove width of the limiting groove is greater than the width of the first limiting block and less than the width of the second limiting block.

[0012] Preferably, the central axis of the first cable groove is collinear with the central axis of the second cable groove.

[0013] Preferably, the outer contour formed by the clamping connection of the first joint and the second joint is cylindrical.

[0014] Preferably, the materials of the drill pipe body, the first joint, the second joint and the limiting ring are all modified polyvinyl chloride.

[0015] Another aspect of the present invention is to provide a logging device, including a logging probe, a logging probe control device, a logging cable and the logging drill pipe as described above. A adapter is connected to the logging probe, and a first joint or a second joint is fixed on one side of the adapter; the logging drill pipe is connected to the adapter; the logging cable is embedded in the first cable groove and the second cable groove of the logging drill pipe, one end of the logging cable is connected to the logging probe control device, and the other end of the logging cable is connected to the logging probe.

[0016] Preferably, support rings are rotatably sleeved on the outer circumferential sides of the logging probe and one or more drill pipe bodies. Third limit blocks are fixed on both sides of the support rings on the logging probe and the drill pipe bodies. The support ring includes a ring body and a plurality of support arms. The plurality of support arms are arranged at intervals along the circumferential direction of the ring body. An axial through groove for the logging cable to pass through is formed in the ring body, and the through groove radially penetrates the ring body.

[0017] Preferably, arc-shaped support blocks are fixed at the ends of the support arms. The connection lines of the arc-shaped support blocks form a circle, and the connection lines of the arc-shaped support blocks are coaxially arranged with the ring body.

[0018] Compared with the prior art, the logging drill pipe and the logging device for horizontal directional drilling engineering geological exploration in the embodiment of the present invention have the following beneficial effects:

[0019] For the logging drill pipe for horizontal directional drilling engineering geological exploration in the embodiment of the present invention, a first joint and a second joint are respectively fixed at both ends of the drill pipe body. The first joint of one drill pipe body is stuck in the joint groove of the adjacent drill pipe body. The limit ring slides axially along the second joint, so that both the first joint and the second joint are stuck in the limit ring, and the connection between two adjacent drill pipe bodies can be realized. While ensuring the strength reliability and connection accuracy, the rapid installation and disassembly of the drill pipe can be realized, effectively shortening the tripping time and improving the logging efficiency. Moreover, a first cable groove is axially formed in the drill pipe body, and a second cable groove is axially formed on the outer wall of the limit ring. When laying the logging cable, the logging cable can be embedded in the first cable groove and the second cable groove, which can not only avoid the direct contact between the logging cable and the hole wall of the horizontal exploration hole, causing cable wear or breakage; but also eliminate the need to pass the logging cable through the inside of the drill pipe with iron wire, simplifying the cable laying steps; at the same time, only one long cable is required for the entire logging process, and when connecting a new drill pipe, there is no need to disconnect the connection between the logging cable and the control device. The cable can be directly embedded in the first cable groove and the second cable groove of the newly added drill pipe body, which can not only greatly save the threading time and improve the logging efficiency, but also ensure the coherence of the logging signal transmission, reduce the signal attenuation caused by cable joints, and improve the accuracy of the logging results. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the logging drill pipe for horizontal directional drilling engineering geological exploration in the embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of the first joint in the embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of the second joint in the embodiment of the present invention;

[0023] Figure 4It is a schematic diagram showing that the first joint and the second joint in the embodiment of the present invention are connected in place;

[0024] Figure 5 It is a schematic diagram of cable threading at the first cable trough and the second cable trough in the embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of cable threading at the wire fixing mechanism in the embodiment of the present invention;

[0026] Figure 7 It is an overall schematic diagram of the logging device described in the embodiment of the present invention;

[0027] Figure 8 is Figure 7 a partial enlarged schematic diagram of part A in

[0028] Figure 9 It is a schematic diagram of the structure of the support ring in the embodiment of the present invention;

[0029] In the figure, 1 is the drill pipe body; 11 is the first cable trough; 2 is the first joint; 21 is the first limit block; 3 is the second joint; 31 is the second limit block; 32 is the joint groove; 33 is the limit ring; 331 is the second cable trough; 332 is the limit groove; 4 is the wire fixing mechanism; 41 is the first wire fixing block; 42 is the second wire fixing block; 5 is the logging probe; 51 is the adapter; 6 is the logging probe control device; 7 is the logging cable; 8 is the power device; 9 is the support ring; 901 is the third limit block; 91 is the ring body; 911 is the through groove; 92 is the support arm; 921 is the arc-shaped support block. Detailed implementation manners

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0033] Such as Figure 1 - Figure 6As shown in the figure, a horizontal directional drilling engineering geological exploration logging drill pipe according to an embodiment of the present invention includes a plurality of drill pipe bodies 1. Each drill pipe body 1 is axially provided with a first cable groove 11 for laying cables. The cable is a logging cable 7. The notch of the first cable groove 11 faces the outside of the drill pipe body 1, and the first cable groove 11 penetrates the drill pipe body 1 along the length direction of the drill pipe body 1. One end of the drill pipe body 1 is fixed with a first joint 2, and the other end of the drill pipe body 1 is fixed with a second joint 3. The second joint 3 is provided with a joint groove 32 adapted to the first joint 2. The first joint 2 can be embedded in the joint groove 32. The notch diameter of the joint groove 32 faces the outside of the second joint 3. The joint groove 32 is strip-shaped. The groove length direction of the joint groove 32 is consistent with the axial direction of the second joint 3, the groove depth direction of the joint groove 32 is consistent with the radial direction of the second joint 3, and the groove width direction of the joint groove 32 is consistent with the circumferential direction of the second joint 3. The notch of the joint groove 32 is preferably arranged upward so that the first joint 2 is embedded from top to bottom, which is convenient for operation. A limiting ring 33 is coaxially and slidably sleeved on the outer peripheral side of the second joint 3. The limiting ring 33 can slide axially along the second joint 3 and rotate around the central axis of the second joint 3. The outer wall of the limiting ring 33 is axially provided with a second cable groove 331 for embedding cables. The notch of the second cable groove 331 faces the outside of the limiting ring 33, and the second cable groove 331 penetrates the limiting ring 33 along the length direction of the limiting ring 33. After the cable is embedded in the second cable groove 331, the cable can limit the rotation of the limiting ring 33 to a certain extent, improve the stability of the connection between the limiting ring 33 and the first joint 2 and the second joint 3, and reduce the risk of the drill pipe disconnecting. A plurality of drill pipe bodies 1 are sequentially connected into a rod shape. The first joint 2 of one drill pipe body 1 is stuck in the joint groove 32 of the adjacent drill pipe body 1. The limiting ring 33 slides axially along the second joint 3, so that the first joint 2 and the second joint 3 are both stuck in the limiting ring 33, connecting two adjacent drill pipe bodies 1 together.

[0034] In the present invention, a first joint 2 and a second joint 3 are respectively fixed at both ends of the drill pipe body 1. The first joint 2 of one drill pipe body 1 is stuck in the joint groove 32 of the adjacent drill pipe body 1, and the limiting ring 33 slides axially along the second joint 3, so that both the first joint 2 and the second joint 3 are stuck in the limiting ring 33, and the connection between two adjacent drill pipe bodies 1 can be realized. While ensuring the strength reliability and connection accuracy, the quick installation and disassembly of the drill pipes can be realized, effectively shortening the tripping time and improving the logging efficiency. Moreover, a first cable groove 11 is axially formed on the drill pipe body 1, and a second cable groove 331 is axially formed on the outer wall of the limiting ring 33. When arranging the logging cable 7, the logging cable 7 can be embedded into the first cable groove 11 and the second cable groove 331, which can not only avoid the direct contact between the logging cable 7 and the hole wall of the horizontal exploration hole, resulting in cable wear or breakage, but also eliminate the need to pass the logging cable 7 through the inside of the drill pipe with iron wire, simplifying the cable arrangement steps. At the same time, only one long cable is required for the whole logging process, and when connecting a new drill pipe, there is no need to disconnect the connection between the logging cable 7 and the control device. The cable can be directly embedded into the first cable groove 11 and the second cable groove 331 of the newly added drill pipe body 1, which can not only greatly save the threading time and improve the logging efficiency, but also ensure the coherence of the logging signal transmission, reduce the signal attenuation caused by cable joints, and improve the accuracy of the logging results.

[0035] In this embodiment, the limiting ring 33 can rotate around the second joint 3. By rotating the limiting ring 33, the central axis of the first cable groove 11 is collinear with the central axis of the second cable groove 331, which is convenient for cable arrangement and avoids cable bending. The outer diameter of the limiting ring 33 is equal to the outer diameter of the drill pipe body 1, so that the first cable groove 11 and the second cable groove 331 are located at the same height position. Further, the outer contour formed by the snap connection of the first joint 2 and the second joint 3 is cylindrical, so that the cylinder formed by the snap connection of the first joint 2 and the second joint 3 is adapted to the inner wall of the limiting ring 33, ensuring the stable connection between the first joint 2 and the second joint 3 and preventing the first joint 2 and the second joint 3 from shaking in the limiting ring 33.

[0036] In this embodiment, as Figure 2 - Figure 4As shown, a first limiting block 21 is fixed on the first connector 2, and a second limiting block 31 is fixed on the second connector 3. An axial limiting groove 332 is formed in the inner wall of the limiting ring 33, and the notch of the limiting groove 332 faces the central side of the limiting ring 33. The limiting groove 332 is circumferentially offset from the second cable groove 331. The width of the limiting groove 332 is greater than the width of the first limiting block 21 and less than the width of the second limiting block 31. The first limiting block 21 is fixed at the end of the first connector 2, and the second limiting block 31 is fixed at the end of the second connector 3. When the limiting ring 33 axially slides and clamps the first connector 2 and the second connector 3, the limiting ring 33 is located between the first limiting block 21 and the second limiting block 31. During use, first rotate the limiting ring 33 so that the limiting groove 332 aligns with the first limiting block 21, axially slide the limiting ring 33, and the limiting groove 332 passes through the first limiting block 21, so that the first connector 2 and the second connector 3 are clamped in the limiting ring 33; then rotate the limiting ring 33 again to adjust the circumferential position of the limiting groove 332, so that the limiting groove 332 is circumferentially offset from the first limiting block 21, and the second cable groove 331 is collinear with the first cable groove 11. At this time, one side of the limiting ring 33 is blocked by the first limiting block 21, and the other side of the limiting ring 33 is blocked by the second limiting ring 33, restricting the axial sliding of the limiting ring 33 and keeping the limiting ring 33 in the state of clamping the first connector 2 and the second connector 3.

[0037] Further, as Figure 2 - Figure 4 shown, the first limiting block 21 is fixed on the upper side of the first connector 2, and the central axis of the first limiting block 21 and the first cable groove 11 is located in the same vertical plane; the second limiting block 31 is fixed at the lower side position of the second connector 3, and the limiting groove 332 is circumferentially offset from the second cable groove 331 by 180°. When the limiting ring 33 clamps the first connector 2 and the second connector 3, the second cable groove 331 aligns with the first limiting block 21, and the limiting groove 332 aligns with the second limiting block 31, thereby performing double positioning on the position of the second cable groove 331, facilitating the adjustment of the position of the second cable groove 331, and adjusting the second cable groove 331 to a position collinear with the first cable groove 11, facilitating the laying of cables.

[0038] In this embodiment, as Figure 5 - Figure 6 shown, fixing mechanisms 4 are arranged at both ends of the first cable groove 11, and the fixing mechanisms 4 form an S-shaped wiring groove in the first cable groove 11 to fix the cable in the first cable groove 11 and prevent the cable from slipping out of the first cable groove 11.

[0039] Further, as Figure 6As shown, the wire fixing mechanism 4 includes a first wire fixing block 41 and a second wire fixing block 42, the first wire fixing block 41 and the second wire fixing block 42 are arranged at intervals along the groove length direction of the first cable groove 11, the first wire fixing block 41 is fixed on the first groove wall of the first cable groove 11, and the second wire fixing block 42 is fixed on the second groove wall of the first cable groove 11, and the first wire fixing block 41, the second wire fixing block 42 and the two groove walls of the first cable groove 11 form the S-shaped wiring groove. The first wire fixing block 41 is spaced apart from the bottom of the first cable trough 11, and the first wire fixing block 41 is spaced apart from the second trough wall of the first cable trough 11, and the spacing between the first wire fixing block 41 and the second trough wall of the first cable trough 11 is slightly larger than the outer diameter of the cable; the second wire fixing block 42 is spaced apart from the bottom of the first cable trough 11, and the second wire fixing block 42 is spaced apart from the first trough wall of the first cable trough 11, and the spacing between the second wire fixing block 42 and the first trough wall of the first cable trough 11 is slightly larger than the outer diameter of the cable, and the spacing between the first wire fixing block 41 and the second trough wall, the spacing between the first wire fixing block 41 and the second wire fixing block 42, and the spacing between the second wire fixing block 42 and the first trough wall form an S-shaped wiring channel. The first wire fixing block 41 is located on the side close to the first connector 2. During wiring, the cable is embedded between the first wire fixing block 41 and the bottom of the first cable groove 11 through the gap between the first wire fixing block 41 and the second groove wall, and then the cable enters between the first wire fixing block 41 and the second wire fixing block 42, and then the cable is embedded between the second wire fixing block 42 and the bottom of the first cable groove 11 through the gap between the second wire fixing block 42 and the first groove wall. The first wire fixing block 41 and the second wire fixing block 42 can stop the cable in the first cable groove 11 to prevent the cable from escaping from the first cable groove 11. Moreover, the wire fixing mechanism 4 using the first wire fixing block 41 and the second wire fixing block 42 can only manually operate the cable to pass through the S-shaped wiring groove when embedding the cable, so that the cable is firmly in the first cable groove 11, and the logging cable 7 will not automatically detach from the first cable groove 11 for some reason during the logging process.

[0040] In this embodiment, the drill pipe body 1, the first joint 2, the second joint 3, and the limit ring 33 are all made of modified polyvinyl chloride. The modified polyvinyl chloride material is used instead of the alloy steel material. The density of the modified polyvinyl chloride is relatively low, and the drill pipe manufactured is relatively light, which can meet the needs of manual rapid connection of the drill pipe. At the same time, the energy consumption of the power equipment 8 during drilling is also greatly reduced compared with alloy steel; the modified polyvinyl chloride material is insulating and non-magnetic, and will not affect the logging probe 5 and the logging cable 7; and the modified polyvinyl chloride has low manufacturing cost, good strength and processing performance, and can realize the standardization of drill pipes and factory prefabricated production.

[0041] like Figure 7As shown in the figure, the logging device of the present invention includes a logging probe 5, a logging probe control device 6, a logging cable 7, and the logging drill pipe as described above. A swivel joint 51 is connected to the logging probe 5. One side of the swivel joint 51 is a threaded joint, and the swivel joint 51 is threadedly connected to the logging probe 5. A first joint 2 or a second joint 3 is fixed to the other side of the swivel joint 51, and the logging drill pipe is connected to the swivel joint 51; the logging cable 7 is embedded in the first cable groove 11 and the second cable groove 331 of the logging drill pipe. One end of the logging cable 7 is connected to the logging probe control device 6, and the other end of the logging cable 7 is connected to the logging probe 5.

[0042] The connection between the logging drill pipe of the present invention and the swivel joint 51, and between the multiple drill pipe bodies 1 of the logging drill pipe is achieved through the clamping connection of the first joint 2 and the second joint 3, which is convenient and fast. As the logging distance increases, for each new drill pipe body 1 connected, the first joint 2 of the new drill pipe body 1 is embedded in the joint groove 32 of the second joint 3 of the adjacent drill pipe body 1, and then fixed with a limit ring 33 to connect the new drill pipe body 1 to the existing drill pipe body 1. It is only necessary to embed the logging cable 7 in the first cable groove 11 of the new drill pipe body 1, without disconnecting the connection between the logging cable 7 and the logging probe control device 6, without connecting a new cable, reducing cable joints, improving logging efficiency, and avoiding large attenuation of the transmitted signal due to excessive cable joints, thereby improving the accuracy of the logging results.

[0043] The logging device further includes a power device 8, and the logging drill pipe is sent into the horizontal exploration hole through the power device 8.

[0044] The logging device further includes a cable winding mechanism for winding the logging cable 7, so that one logging cable 7 meets the logging distance requirements of the horizontal exploration hole. As the logging distance increases, the logging cable 7 on the cable winding mechanism is released and embedded in the first cable groove 11 of the newly added drill pipe body 1, without connecting a new logging cable 7. And by winding the cable through the cable winding mechanism, the disorderly winding of the logging cable 7 can be avoided.

[0045] In this embodiment, as Figure 7 - Figure 9As shown, a support ring 9 is rotatably sleeved on the outer peripheral sides of the logging probe 5 and one or more drill pipe bodies 1. The support ring 9 is coaxially installed with the logging probe 5 or the drill pipe body 1. Third limit blocks 901 are fixed on both sides of the support ring 9 on the logging probe 5 and the drill pipe body 1. The two third limit blocks 901 limit the axial movement of the support ring 9, so that the support ring 9 cannot slide axially along the logging probe 5 or the drill pipe body 1, but can rotate. The support ring 9 supports on the outer peripheral side of the logging probe 5 or the drill pipe body 1, so that the whole drill pipe remains horizontal. The outer diameter of the support ring 9 is determined by the diameter of the horizontal exploration hole. The support ring 9 can not only prevent the drill pipe and the logging probe 5 from directly contacting the hole wall of the horizontal exploration hole, protect the logging probe 5 while reducing the frictional resistance between the drill pipe and the hole wall, and reducing the energy consumption of tripping; but also reduce the rotation of the drill pipe and reduce the risk of disconnection of the drill pipe connection.

[0046] Further, as Figure 9 shown, the support ring 9 includes a ring body 91 and a plurality of support arms 92. The plurality of support arms 92 are circumferentially spaced along the ring body 91. An axial through groove 911 for the logging cable 7 to pass through is formed on the ring body 91. The through groove 911 radially penetrates the ring body 91, facilitating the logging cable 7 to pass through the through groove 911 and embed into the first cable groove 11. The plurality of support arms 92 are circumferentially spaced, which not only does not affect the logging cable 7 passing through the through groove 911, but also can balance the circumferential support force provided by the support ring 9 to the drill pipe body 1 or the logging probe 5.

[0047] Further, an arc-shaped support block 921 is fixed at the end of each support arm 92. The connection lines of the arc-shaped support blocks 921 form a circle, and the connection lines of the arc-shaped support blocks 921 are coaxially arranged with the ring body 91. The arc-shaped support block 921 can increase the contact area between the support arm 92 and the hole wall of the horizontal exploration hole, so that the drill pipe can remain as stable as possible in the hole.

[0048] The working process of the present invention is as follows:

[0049] After drilling, coring, hole cleaning and hydraulic fracturing tests are completed, all drill rods and equipment in the horizontal exploration hole are pulled out, and the present invention is used to perform comprehensive well logging of the horizontal exploration hole. The logging probe 5 is connected to the drill rod through an adapter 51, and the adapter 51 is connected to the drill rod body 1 and two adjacent drill rod bodies 1 through a first joint 2 and a second joint 3. The drill rod is sent into the horizontal exploration hole through a power device 8. When the drill rods are connected, the second joint 3 of the previous drill rod body 1 is connected to the first joint 2 of the subsequent drill rod body 1, that is, the first joint 2 is embedded in the joint groove 32 of the second joint 3 from above, and the limiting ring 33 is rotated to align the limiting groove 332 with the first limiting block 21, and then the limiting ring 33 is axially slid to pass through the first limiting block 21, and the limiting ring 33 is rotated 180 degrees to misalign the limiting groove 332 with the first limiting block 21. At this time, the first joint 2 and the second joint 3 are both stuck in the limiting ring 33, and the second cable groove 331 on the limiting ring 33 is in the same straight line as the first cable groove 11. At the same time, the limiting ring 33 is limited by the first limiting block 21 and the second limiting block 31 and cannot slide axially, and the drill rod is connected in place.

[0050] One end of the logging cable 7 is connected to the logging probe 5, and the other end is connected to the logging probe control device 6. The logging cable 7 is embedded in the first cable groove 11 through the S-shaped wiring groove. Due to the structural particularity of the wire fixing mechanism 4, the logging cable 7 can only be manually operated through the S-shaped wiring groove. Therefore, once the logging cable 7 is embedded, the logging cable 7 will not automatically escape from the first cable groove 11 for any reason during the logging process. When passing through the support ring 9, the logging cable 7 is embedded in the first cable groove 11 through the through groove 911 on the support ring 9; when passing through the limit ring 33, the logging cable 7 is embedded in the second cable groove 331 on the limit ring 33. When a drill pipe body 1 is pushed, it is only necessary to wait for the next drill pipe body 1 to be connected to the previous drill pipe body 1, and lay the logging cable 7 according to the above method, and then the logging can be continued without disconnecting the connection between the logging cable 7 and the logging probe control device 6 and then threading.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A logging drill pipe for horizontal directional drilling engineering geological exploration, characterized in that, it includes: A plurality of drill pipe bodies, each of the drill pipe bodies is axially provided with a first cable groove, one end of the drill pipe body is fixed with a first joint, the other end of the drill pipe body is fixed with a second joint, the second joint is provided with a joint groove adapted to the first joint, the groove diameter of the joint groove is radially oriented towards the outside of the second joint, a limiting ring is coaxially and slidably sleeved on the outer peripheral side of the second joint, and a second cable groove is axially provided on the outer wall of the limiting ring; The first joint of one drill pipe body is stuck in the joint groove of the adjacent drill pipe body, and the limiting ring slides axially along the second joint, so that both the first joint and the second joint are stuck in the limiting ring; Fixing mechanisms are arranged at both ends of the first cable groove, and the fixing mechanisms form an S-shaped wiring groove in the first cable groove; The fixing mechanism includes a first fixing block and a second fixing block, the first fixing block and the second fixing block are arranged at intervals along the groove length direction of the first cable groove, the first fixing block is fixed on one groove wall of the first cable groove, the second fixing block is fixed on the other groove wall of the first cable groove, and the first fixing block, the second fixing block and the two groove walls of the first cable groove form the S-shaped wiring groove; A first limiting block is fixed on the first joint, a second limiting block is fixed on the second joint, a limiting groove is axially provided on the inner wall of the limiting ring, the limiting groove is circumferentially misaligned with the second cable groove, and the groove width of the limiting groove is greater than the width of the first limiting block and less than the width of the second limiting block; The central axis of the first cable groove is collinear with the central axis of the second cable groove.

2. The logging drill pipe for horizontal directional drilling engineering geological exploration according to claim 1, characterized in that, The outer contour formed by the clamping connection of the first joint and the second joint is cylindrical.

3. The logging drill pipe for horizontal directional drilling engineering geological exploration according to claim 1, characterized in that, The materials of the drill pipe body, the first joint, the second joint and the limiting ring are all modified polyvinyl chloride.

4. A logging device, characterized in that, It includes a logging probe, a logging probe control device, a logging cable and the logging drill pipe according to any one of claims 1-3. A rotary joint is connected to the logging probe, and a first joint or a second joint is fixed on one side of the rotary joint; the logging drill pipe is connected to the rotary joint; the logging cable is embedded in the first cable groove and the second cable groove of the logging drill pipe, one end of the logging cable is connected to the logging probe control device, and the other end of the logging cable is connected to the logging probe.

5. The logging device according to claim 4, characterized in that, A support ring is rotatably sleeved on the outer peripheral sides of the logging probe and one or more drill pipe bodies. Third limit blocks are fixedly arranged on both sides of the support ring on the logging probe and the drill pipe bodies. The support ring includes a ring body and a plurality of support arms. The plurality of support arms are arranged at intervals along the circumferential direction of the ring body. A through groove for the logging cable to pass through is axially formed in the ring body, and the through groove radially penetrates the ring body.

6. The logging device according to claim 5, wherein, an arc-shaped support block is fixedly arranged at the end of each support arm. The connection lines of the arc-shaped support blocks form a circle, and the connection lines of the arc-shaped support blocks are coaxially arranged with the ring body.

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