Rope directional coring drilling device with composite function

Abstract

The invention discloses a rope directional coring drilling device with a composite function, and belongs to the technical field of geological exploration and resource development. The problems that an existing directional coring technology is poor in precision, insufficient in stability and inaccurate in data association are solved. The device comprises a stable outer pipe assembly, a suspension assembly, a directional measurement assembly and a coring inner pipe assembly. A fixed shell of the suspension assembly is connected with the outer pipe, a rotatable rotating mandrel is arranged in the outer pipe through a bearing assembly, and the directional measurement assembly is connected to the lower portion of the rotating mandrel. Positioning key grooves are formed in the inner wall of the outer pipe, and matched positioning keys are arranged on the outer wall of the inner pipe. The automatic righting and clamping mechanism driven by the electric telescopic rod is additionally arranged in the outer pipe, so that the inner pipe can be tightly held after the inner pipe is in place, and vibration and deviation are prevented. Wireless sensing modules are arranged at the bottom of the inner pipe and inside the outer pipe, and the in-place moment of the inner pipe is automatically marked and associated with directional data. Through combination of mechanical coupling and intelligent control, high-stability, high-precision and automatic rope directional coring is realized.

Description

Technical Field

[0001] This invention relates to the field of geological exploration and resource development technology, and in particular to a rope-directed coring drilling device with multiple functions. Background Technology

[0002] Obtaining undisturbed rock cores with precise spatial orientation information is crucial for geological structure analysis, geostress measurement, mineral resource evaluation, and major engineering geological exploration. Currently, the mainstream technical approaches for directional coring have significant limitations.

[0003] The first method is the "measure first, then retrieve" step-by-step method: first, a single-point or multi-point inclinometer is run down into the well to measure the borehole trajectory and tool face azimuth. After the instrument is retrieved, conventional coring tools are then run down for coring. This method has a long operation cycle and high cost. Furthermore, the bottom hole assembly may experience uncontrollable circumferential rotation due to loosening, vibration, or other factors between the two operations, resulting in a difficult-to-calibrate deviation between the actual tool face during subsequent coring and the previously measured reference surface, leading to low directional reliability.

[0004] The second approach involves combining measurement while drilling (MSW) with core sampling tools. However, in wireline-assisted core sampling systems, mounting expensive instruments on a retrievalable inner tube assembly necessitates lifting the instruments to the surface each time a core is retrieved, risking instrument damage, data interruption, and a sharp drop in operational efficiency. If the instruments are fixed to the outer tube, a fundamental challenge must be addressed: how to transmit and "record" the dynamically changing toolface orientation from MSW data onto the non-rotating core in real time without distortion. Current technology lacks a mechanical coupling mechanism that can maintain a rigid and precise orientational relationship between the measurement reference and the core carrier under severe drilling vibrations.

[0005] Furthermore, in deep holes, hard rock, or high-vibration conditions, conventional inner tube assemblies may experience radial oscillation or circumferential micro-displacement within the borehole. This can disrupt the established directional alignment, leading to the invalidation of the final core orientation data. Simultaneously, accurately determining the start time of coring and uniquely associating the orientation data at that moment with subsequent core samples currently relies on manual judgment, which is subject to subjective errors. Therefore, a revolutionary coring device and operating method integrating high-precision orientation, high stability maintenance, high-efficiency retrieval, and intelligent data association is needed. To address these issues, we propose a wireline directional coring drilling device with multiple functions. Summary of the Invention

[0006] Technical solution: A multi-functional wireline directional coring drilling device includes: a stabilizing outer tube assembly with its upper end connected to a drill string and its lower end connected to a coring drill bit, the inner wall of which has an axially extending positioning keyway; a suspension assembly with its upper end connected to a wireline retrieval assembly and its lower end fixedly connected to the upper end of the stabilizing outer tube assembly; and a coring inner tube assembly capable of being deployed into or retrieved from the stabilizing outer tube assembly via a wireline through the wireline retrieval assembly, its outer wall having a positioning key that mates with the positioning keyway and a directional measuring device. The suspension assembly further includes a rotating mandrel rotatably disposed within the fixed housing. The rotating mandrel is connected to the fixed housing via a bearing assembly and has a central channel through which the core-taking inner tube assembly passes. The orientation measurement assembly is connected below the rotating mandrel and located inside the stabilizing outer tube assembly. When the core-taking inner tube assembly is deployed, the positioning key is embedded in the positioning keyway of the stabilizing outer tube assembly, and the core-taking inner tube assembly is connected to the rotating mandrel.

[0007] Alternatively, the bearing assembly of the suspension assembly includes at least one thrust bearing and at least one radial bearing, and the rotating spindle is supported in the fixed housing by the thrust bearing and the radial bearing; the fixed housing is also provided with a seal for sealing the bearing assembly.

[0008] Alternatively, the positioning key is a protrusion on the outer wall of the core-taking inner tube assembly, and the positioning keyway is an axial groove on the inner wall of the stabilizing outer tube assembly that matches the shape of the protrusion.

[0009] Alternatively, the cross-sectional shape of the positioning key may be rectangular, trapezoidal, or dovetail-shaped.

[0010] Alternatively, the orientation measurement assembly is externally fitted with a centralizer for centering it within the stabilizing outer tube assembly.

[0011] Alternatively, the upper end of the orientation measurement assembly is fixedly connected to the lower end of the rotating mandrel via a threaded connection or a plug-in quick connector.

[0012] Alternatively, the core-retrieving inner tube assembly may include, from top to bottom, a retrieval spearhead, a single-action mechanism, an inner tube body, and a retaining ring seat located at the bottom end of the inner tube body, with the positioning key located on the outer wall of the inner tube body.

[0013] Alternatively, the stable outer tube assembly may have an internal ring body, on which three sets of fixing blocks are arranged in a ring shape. A connecting rod is hinged to the fixing block, and a clamping arm is hinged to the connecting rod. An electric telescopic rod is provided at the bottom of the ring body, and three sets of fixing blocks are arranged in a ring shape at the bottom of the electric telescopic rod. A connecting rod is hinged to the fixing block, and the connecting rod and the clamping arm are hinged together. An anti-slip pad is provided on the connecting rod.

[0014] Alternatively, a miniature RFID tag or a low-power pressure pulse generator may be integrated inside the retaining ring seat of the core-taking inner tube assembly. An RFID reader or pressure sensor may be installed at a corresponding position on the inner wall of the stabilizing outer tube assembly.

[0015] Beneficial effects: 1. A significant leap in precision across the entire process chain: A stable measurement benchmark is established through "rotating mandrel-bearing suspension", precise orientation is achieved through rigid meshing of "key-groove", and vibration interference is offset through "automatic straightening clamping mechanism", ensuring the core orientation accuracy from source to end.

[0016] 2. Significantly enhanced system stability and adaptability: The automatic straightening and clamping mechanism can actively adapt to inner tubes of different diameters, effectively suppressing inner tube vibration and displacement during drilling in complex formations, and improving the reliability of the device and core recovery rate under harsh working conditions.

[0017] 3. A new method for intelligent data association has been pioneered: By integrating radio frequency identification or pressure sensing modules, the automatic and accurate association between the "mechanical positioning" event and the "directional data stream" has been realized, completely eliminating the error of human judgment of the starting time of coring, making the data reconstruction more objective and reliable.

[0018] 4. Highly integrated functions and efficient and smooth operation: The five major functional modules of directional measurement, core capture, active stabilization, intelligent sensing and rope retrieval are seamlessly integrated, realizing automated and continuous operation of measurement, stabilization, coring and data marking, which greatly improves efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 In this invention Figure 1 A schematic diagram of the exploded structure; Figure 3 This is a schematic diagram of the planar structure of the incisional tube assembly in this invention; Figure 4 This is a schematic diagram of the planar structure of the snap ring holder in this invention; Figure 5 This is a schematic diagram of the planar structure of each component on the ring body in this invention.

[0020] Figure Labels 1. Rope salvage assembly; 2. Suspension assembly; 21. Fixed housing; 22. Rotating spindle; 23. Thrust bearing; 24. Radial bearing; 25. Seal; 3. Orientation measurement assembly; 4. Stabilizing outer tube assembly; 41. Positioning keyway; 42. Core drill bit; 5. Core inner tube assembly; 51. Positioning key; 52. Salvage spearhead; 53. Single-action mechanism; 54. Inner tube body; 55. Snap ring seat; 6. Ring body; 61. Fixing block one; 62. Connecting rod one; 63. Clamping arm; 64. Electric telescopic rod; 65. Fixing block two; 66. Connecting rod two; 67. Anti-slip pad. Detailed Implementation

[0021] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example like Figure 1-5 As shown, this embodiment of the invention provides a wireline directional coring drilling device with multiple functions, including: a stabilizing outer tube assembly 4, the upper end of which is connected to a drill string, and the lower end of which is connected to a coring drill bit 42, the inner wall of which is provided with an axially extending positioning keyway 41; a suspension assembly 2, the upper end of which is connected to a wireline retrieval assembly 1, and the lower end of which is fixedly connected to the upper end of the stabilizing outer tube assembly 4; and a coring inner tube assembly 5, which can be deployed into or retrieved from the stabilizing outer tube assembly 4 via a wireline through the wireline retrieval assembly 1, the outer wall of which is provided with a positioning key 51 that mates with the positioning keyway 41 and a positioning key 51. The directional measurement assembly 3 includes a suspension assembly 2 further comprising a rotating mandrel 22 rotatably disposed within the fixed housing 21. The rotating mandrel 22 is connected to the fixed housing 21 via a bearing assembly and has a central channel through which the core-collecting inner tube assembly 5 passes. The directional measurement assembly 3 is connected below the rotating mandrel 22 and located inside the stabilizing outer tube assembly 4. When the core-collecting inner tube assembly 5 is deployed, the positioning key 51 is embedded in the positioning keyway 41 of the stabilizing outer tube assembly 4, and the core-collecting inner tube assembly 5 is connected to the rotating mandrel 22.

[0023] Optionally, the bearing assembly of the suspension assembly 2 includes at least one set of thrust bearings 23 and at least one set of radial bearings 24. The rotating mandrel 22 is supported within the fixed housing 21 by the thrust bearings 23 and the radial bearings 24. The fixed housing 21 also includes a seal 25 for sealing the bearing assembly. Optionally, the positioning key 51 is a protrusion on the outer wall of the core-taking inner tube assembly 5, and the positioning keyway 41 is an axial groove on the inner wall of the stabilizing outer tube assembly 4 that matches the shape of the protrusion. Optionally, the cross-sectional shape of the positioning key 51 is rectangular, trapezoidal, or dovetail-shaped. Optionally, the orientation measurement assembly 3 is externally fitted with a centering device for centering it within the stabilizing outer tube assembly 4. Optionally, the upper end of the orientation measurement assembly 3 is fixedly connected to the lower end of the rotating mandrel 22 via a threaded connection or a plug-in quick connector. Alternatively, the core-retrieving inner tube assembly 5 may include, from top to bottom, a spearhead 52, a single-action mechanism 53, an inner tube body 54, and a retaining ring seat 55 located at the bottom of the inner tube body 54. The positioning key 51 may be located on the outer wall of the inner tube body 54. Alternatively, the stabilizing outer tube assembly 5 may have an internal ring body 6. The ring body 6 may have three sets of fixing blocks 61 arranged in a ring shape. A connecting rod 63 may be hinged to the fixing blocks 61. A clamping arm 63 may be hinged to the connecting rod 63. An electric telescopic rod 64 may be located at the bottom of the ring body 6. The electric telescopic rod 64 may have three sets of fixing blocks 65 arranged in a ring shape at the bottom. A connecting rod 66 may be hinged to the fixing blocks 65. The connecting rod 66 and the clamping arm 63 may be hinged together. An anti-slip pad 67 may be located on the connecting rod 66. Alternatively, a miniature RFID tag or a low-power pressure pulse generator may be integrated inside the retaining ring seat 55 of the core-taking inner tube assembly 5. An RFID reader or pressure sensor may be installed at a corresponding position on the inner wall of the stable outer tube assembly 4.

[0024] Example 1: Basic Structure Example and Precise Orientation Transmission Principle This embodiment illustrates the core mechanical system of the invention: "rotating outer tube - floating mandrel - keyway coupling". The main body of the device consists of a fixed part consisting of a rope retrieval assembly 1, a suspension assembly 2, a directional measurement assembly 3, and a stabilizing outer tube assembly 4, while the inner tube assembly 5 is the movable part that can be deployed and retrieved.

[0025] 1. Detailed structure and floating reference principle of suspension assembly 2 Fixed housing 21: an integral cylindrical shell. Its upper end is machined with a female thread for connection to the male thread of the rope retrieval assembly 1; its lower end is machined with a male thread for connection to the female thread at the upper end of the stabilizing outer tube assembly 4 and tightened to the specified torque. The inner cavity of the housing has three stepped holes for precise bearing installation.

[0026] Rotating spindle 22: A hollow stepped shaft machined from high-strength stainless steel. Its upper shoulder rests on an upper thrust bearing assembly, which contains a pair of back-to-back angular contact ball bearings, primarily bearing downward axial forces. The middle shaft body mates with the housing via radial needle roller bearings, ensuring the spindle is centered and bears radial loads. The lower part bears potential upward axial forces via a lower thrust bearing assembly (a set of one-way thrust ball bearings). All bearings are coated with high-temperature lithium-based grease and preloaded during assembly to ensure that the rotating spindle 22 can rotate freely within the fixed housing 21 with extremely low resistance and without axial movement.

[0027] Sealing system 25: Two seals are installed at the upper and lower ends of the bearing chamber. The first is a rotary shaft lip seal, and the second is a plug seal. The combination of the two forms a redundant seal, effectively isolating high-pressure drilling fluid and cuttings, ensuring bearing life.

[0028] Central passage: The inner diameter of the through hole of the rotating mandrel 22 is larger than the maximum outer diameter of the standard rope retrieval head and core extraction tube assembly 5, ensuring smooth passage.

[0029] Floating principle: When the drill string drives the fixed housing 21 to rotate, the rotating mandrel 22 is suspended and isolated by a precision bearing. Under the action of downhole fluid resistance and inertia, it tends to maintain its spatial azimuth or drift slowly, thus providing a relatively stable azimuth measurement reference platform for the orientation measurement assembly 3 connected to its lower end.

[0030] 2. Integration and data acquisition of orientation measurement assembly 3 Instrument compartment: Constructed as a pressure-resistant titanium alloy cylinder. The interior employs a modular design, sequentially housing: a lithium battery pack, a triaxial magnetoresistive sensor (HMC5883L), a triaxial MEMS accelerometer (ADXL355), a temperature sensor, a 32-bit microprocessor, and a memory chip (SD card). All components are reinforced and thermally conductive using potting compound.

[0031] Connection method: The upper end of the instrument compartment is directly connected to the lower end of the rotating spindle 22 via a fine thread, and the connection is sealed with an O-ring. This rigid connection ensures that the axis of the measuring assembly 3 coincides with the axis of the rotating spindle 22, and the two are completely synchronized.

[0032] Centralizer 31: A three-winged spiral polyurethane centralizer block, interference-fitted onto the outer wall of the middle section of the instrument compartment.

[0033] 3. Coupling details of the stabilizing outer tube assembly 4 and the core-harvesting inner tube assembly 5 Positioning keyway 41: Three keyways are evenly distributed at 120° on the inner wall of the stable outer tube assembly 4.

[0034] Locating key 51: Made of high-strength tool steel, it is fastened to the outer wall of the inner tube body 54 of the core-taking inner tube assembly 5 by countersunk screws. Its shape is completely complementary to the keyway 41, and is a trapezoidal protrusion.

[0035] Single-action mechanism 53: Two sets of face-to-face angular contact ball bearings are used to achieve unidirectional rotational separation between the retrieval head 52 and the inner tube body 54. That is, during drilling, the upper part connected to the retrieval head 52 can revolve with the outer tube, but the inner tube body 54 and the rock core inside remain stationary under the action of the bearings.

[0036] 4. Basic Implementation Method and Effects Drilling and Orientation: After assembling the fixed components, run the drill string to the core sampling position. Brake the drill string and hold it still for 1 minute. The orientation measurement assembly uses high-frequency sampling to calculate and store the tool face angle, inclination angle, and azimuth angle at this moment.

[0037] Deployment and Coupling: The inner tube assembly 5 is dropped from the wellhead. During the descent, the positioning key 51, guided by the keyway 41, ensures that the inner tube assembly 5 does not rotate. Upon bottoming, the conical mating mechanism completes the initial connection, and the keyway engagement completes the final precise positioning.

[0038] Drilling and coring: During pump circulation, the outer tube 4 drives the drill bit 42 to rotate, and the torque is transmitted to the positioning key 51 through the side of the keyway 41, driving the entire inner tube assembly 5 (except for the internal core) to revolve synchronously. The single-action mechanism 53 keeps the core stationary. The directional measurement assembly 3 continuously records trajectory data at low frequency.

[0039] Salvage and restoration: The core was broken off, and a rope salvage device was lowered to capture the salvage spearhead 52. The inner tube assembly 5 and the core were then pulled out.

[0040] Example 2: An Example Integrating Active Alignment and Vibration Suppression Mechanism Based on Embodiment 1, in order to solve the forced vibration and micro-displacement that may occur in the inner tube during deep hole or high-speed drilling, this embodiment integrates an active straightening and clamping mechanism in the stable outer tube assembly 4.

[0041] 1. Detailed organizational structure: Ring 6: A machined steel flange ring located above the locating keyway 41 area.

[0042] Clamping execution unit: contains three identical sets of linkage slider mechanisms, evenly distributed 120° around the circumference.

[0043] Fixed block 61: welded to the lower surface of ring 6, with connecting rod 62 hinged to it.

[0044] Clamping arm 63: It is an arc-shaped wear-resistant steel block. Its upper end is hinged to the other end of connecting rod 62, and its lower end is connected to connecting rod 66 through another hinge point.

[0045] Electric telescopic rod 64: A waterproof and explosion-proof miniature linear motor is used, and its cylinder is fixed below the ring 6 by a bracket.

[0046] Fixed block 2 65: Installed on the drive disc at the end of the piston rod of the electric telescopic rod 64, on which connecting rod 2 66 is hinged.

[0047] Anti-slip pad 67: is a 3mm thick nitrile rubber layer vulcanized on the inner arc surface of the clamp arm 63, with interlaced grooves on the surface to increase friction.

[0048] 2. Control principle and effects: Control Logic: The power supply and control cables for the electric telescopic boom 64 can be pre-embedded in the drill pipe joint, or a separate downhole battery and timer trigger module can be used. The program is set to start 30 seconds after the calculated arrival time of the inner tube assembly 5 to ensure that the inner tube is fully seated.

[0049] Operation process: After activation, the piston rod of the electric telescopic rod 64 retracts upward. This pulls the upper end of the connecting rod 66 upward via the fixing block 65. Since the lower end of the connecting rod 66 is hinged to the clamping arm 63, and the upper end of the connecting rod 62 is hinged to the ring body 6, this movement forces the three clamping arms 63 to simultaneously retract towards the central axis until the anti-slip pad 67 tightly grips the outer wall of the already positioned core-taking inner tube assembly 5. The clamping force can be controlled by current or stroke.

[0050] The three-point clamping mechanism achieves complete centering of the inner tube, eliminating any possible radial sway and protecting the inner tube and core from alternating stress. In addition to the engagement of the locating key 51 and keyway 41, it provides enormous static friction, absolutely preventing micron-level circumferential slippage that may occur during torque fluctuations (such as when drilling through interlayers). This is crucial for ensuring the orientation accuracy of ultra-long core drilling (e.g., over 6 meters). The rubber anti-slip pad 67 also acts as a damper, absorbing and dissipating high-frequency vibration energy from the formation, creating a more stable environment for the internal orientation measurement assembly 3 and the core.

[0051] Example 3: An Example of Achieving Precise Association Between Intelligent Event Tags and Data 1. Hardware integration details: Signal transmitter: A sealing groove is milled into the retaining ring seat 55 of the core-taking inner tube assembly 5. A passive UHF RFID tag is embedded in the groove and sealed with epoxy resin. The tag ID is bound to the inner tube number at the factory.

[0052] Signal receiving end: An RFID reader module is embedded in the inner wall of the stable outer tube assembly 4, corresponding to the annular position when the snap ring seat 55 is fully set. The reader is connected to the data interface module in the upper suspension assembly 2 via a high-temperature resistant cable. This module can upload the reading event along with a timestamp to the ground via a mud pulse generator or a wired system.

[0053] 2. Data Association Control Principles and Operation Procedures: Principle: The physical event of "positioning and sealing" in machinery is transformed into a digital event with a precise timestamp that can be recognized by a computer system.

[0054] Enhanced workflow: Before deploying the inner tube assembly 5, the ground system enters the inner tube number (corresponding RFID ID) to be used this time.

[0055] When the inner tube assembly 5 sits at the bottom, the snap ring seat 55 touches the inner step of the drill bit, and the RFID tag enters the effective range of the reader.

[0056] The card reader instantly reads the ID, the data interface module generates an "inner tube in place" signal, and transmits it to the ground in real time through the drilling measurement channel. The ground monitoring software records the absolute time T.

[0057] The software automatically locates time point T in the continuous data stream transmitted from the orientation measurement assembly 3. Starting from T, it automatically extracts all orientation data within the preset coring time and packages it into a data file.

[0058] Significant effects: Eliminating human error: It completely eliminates the reliance on the driller's verbal command or record of "start coring" and achieves millisecond-level event marking.

[0059] Fully automated association is achieved: core samples (with numbers) and directional data packets (named by event timestamps) are automatically matched one-to-one, eliminating the possibility of data mismatch.

[0060] Supports digital management: The RFID system can be extended to the entire lifecycle management of internal pipe assemblies, such as tracking the number of times they are used and reminding users of maintenance cycles.

[0061] Through the above three progressive and detailed embodiments, the specific implementation methods of the present invention are fully disclosed, its feasibility is demonstrated, and the complete technical evolution path from basic mechanical coupling to active stability enhancement and then to intelligent data management and the substantial technical effects it brings are clearly shown.

[0062] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A rope-guided coring drilling device with multiple functions, characterized in that, include: A stabilizing outer tube assembly (4) has an upper end for connecting to a drill string and a lower end for connecting to a core drill bit (42), and its inner wall is provided with an axially extending positioning keyway (41); a suspension assembly (2) has an upper end of its fixed housing (21) connected to a rope retrieval assembly (1) and a lower end fixedly connected to the upper end of the stabilizing outer tube assembly (4); a core inner tube assembly (5) can be deployed into or retrieved from the stabilizing outer tube assembly (4) via a rope through the rope retrieval assembly (1), and its outer wall is provided with a positioning key (51) that mates with the positioning keyway (41), and a directional measurement assembly (3); wherein, the suspension assembly (2) It also includes a rotating mandrel (22) rotatably disposed in the fixed housing (21). The rotating mandrel (22) is connected to the fixed housing (21) through a bearing assembly. It has a central channel for the core-taking inner tube assembly (5) to pass through. The orientation measurement assembly (3) is connected below the rotating mandrel (22) and located inside the stable outer tube assembly (4). When the core-taking inner tube assembly (5) is deployed, the positioning key (51) is embedded in the positioning keyway (41) of the stable outer tube assembly (4), and the core-taking inner tube assembly (5) is connected to the rotating mandrel (22).

2. The rope-guided coring drilling device according to claim 1, characterized in that, The bearing assembly of the suspension assembly (2) includes at least one set of thrust bearings (23) and at least one set of radial bearings (24). The rotating spindle (22) is supported in the fixed housing (21) by the thrust bearings (23) and the radial bearings (24). The fixed housing (21) is also provided with a seal (25) for sealing the bearing assembly.

3. The rope-guided coring drilling device according to claim 1, characterized in that, The positioning key (51) is a protrusion on the outer wall of the core-taking inner tube assembly (5), and the positioning keyway (41) is an axial groove on the inner wall of the stabilizing outer tube assembly (4) that matches the shape of the protrusion.

4. The rope-guided coring drilling device according to claim 3, characterized in that, The cross-sectional shape of the positioning key (51) is one of rectangle, trapezoid or dovetail.

5. The rope-guided coring drilling device according to claim 1, characterized in that, The orientation measurement assembly (3) is externally fitted with a centralizer for centering it within the stabilizing outer tube assembly (4).

6. The rope-guided coring drilling device according to claim 1, characterized in that, The upper end of the orientation measurement assembly (3) is fixedly connected to the lower end of the rotating mandrel (22) via a threaded connection or a plug-in quick connector.

7. The rope-guided coring drilling device according to claim 1, characterized in that, The core-retrieving inner tube assembly (5) includes, from top to bottom, a retrieval spearhead (52), a single-action mechanism (53), an inner tube body (54), and a snap ring seat (55) located at the bottom of the inner tube body (54). The positioning key (51) is located on the outer wall of the inner tube body (54).

8. The rope-guided coring drilling device according to claim 1, characterized in that, The stable outer tube assembly (5) has an inner ring body (6). The ring body (6) has three sets of fixing blocks (61) arranged in a ring shape. The fixing blocks (61) are hinged to a connecting rod (63). The connecting rod (63) is hinged to a clamping arm (63). The bottom of the ring body (6) has an electric telescopic rod (64). The bottom of the electric telescopic rod (64) has three sets of fixing blocks (65) arranged in a ring shape. The fixing blocks (65) are hinged to a connecting rod (66). The connecting rod (66) and the clamping arm (63) are hinged together. The connecting rod (66) is provided with an anti-slip pad (67).

9. The rope-guided coring drilling device according to claim 1, characterized in that, Inside the retaining ring seat (55) of the core-taking inner tube assembly (5), a miniature radio frequency identification (RFID) tag or a low-power pressure pulse generator is integrated. An RFID reader or pressure sensor is installed at a corresponding position on the inner wall of the stable outer tube assembly (4).

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