While-drilling optical cable take-up and pay-off anchoring device

Abstract

The invention provides a while-drilling optical cable take-up and pay-off anchoring device, and relates to the field of petroleum and natural gas drilling engineering, the while-drilling optical cable take-up and pay-off anchoring device comprises a pay-off rack and an anchoring mechanism, and the anchoring mechanism comprises a mounting sleeve fixedly arranged at one end of the pay-off rack; the connecting seat is arranged on the peripheral side of the mounting sleeve in a sleeving manner and can axially slide along the mounting sleeve; the umbrella rib assemblies are uniformly distributed on the peripheral side of the mounting sleeve, one end of each umbrella rib assembly is hinged to the pay-off rack, and the other end of each umbrella rib assembly is hinged to the connecting seat; the connecting base is driven to slide axially through the wireless control driving assembly, the hinged umbrella rib assembly is driven to be unfolded or folded in the radial direction, the radial deformation capacity of the umbrella rib assembly is utilized to adapt to different drill rod inner diameters, and stable anchoring is achieved. Meanwhile, a wireless control mode gets rid of wiring limitation of traditional hydraulic or mechanical driving, anchoring-resetting efficiency of the multiple drill rod short sections during continuous operation is remarkably improved, and smooth release and reliable fixation of the optical cable while drilling under the complex well condition are ensured.

Description

Technical Field

[0001] The present application relates to the field of oil and gas drilling engineering, and in particular to a drilling-while-drilling optical cable retracting and anchoring device. Background Art

[0002] my country's oil and gas exploration and development is gradually expanding to complex oil and gas reservoirs such as low permeability, unconventional, deep and ultra-deep, and deep water. Such reservoirs have harsh geological conditions and complex drilling trajectories, which put forward higher requirements for the speed, stability, and security of real-time transmission of downhole data. Traditional measurement while drilling technology relies on cable or electromagnetic wave communication, and has problems such as narrow transmission bandwidth, weak anti-electromagnetic interference ability, and severe long-distance signal attenuation. It is difficult to meet the real-time transmission requirements of large-capacity data such as high-definition geological imaging and multi-parameter dynamic monitoring for intelligent drilling and completion. With the high-frequency characteristics of light waves, fiber-optic communication technology while drilling can provide GHz-level communication bandwidth and a relay-free transmission distance of more than 10km. It also has the advantages of anti-electromagnetic interference, spark-free explosion-proof, environmental protection, and corrosion resistance, becoming a key technical path to solve the efficient exploration of complex oil and gas wells.

[0003] The core of the fiber optic measurement while drilling system lies in the precise laying of optical cables during the splicing of drill pipe short sections: when the drill pipe needs to be connected section by section, the cable storage mechanism and the pay-off frame that store the optical cable need to be lifted up synchronously, and the anchoring device on the pay-off frame is anchored to the inner wall of the drill pipe, thereby releasing the pre-installed optical cable in the cable storage mechanism, and realizing the efficient collection of deep formation data. However, in actual operations, due to factors such as manufacturing tolerances, downhole wear and multi-stage splicing, the inner diameter of the drill pipe is often non-uniform (the common range is 80-150mm), and the traditional rigid anchoring device cannot adapt to the change of the inner diameter, resulting in anchor failure, cable jamming and even breakage. In addition, during the repeated splicing of multiple short sections, after each section of the drill pipe optical cable is laid, the anchoring device needs to be quickly reset and re-adapted to the inner diameter of the next section of the drill pipe. The existing mechanical anchoring structure relies on manual adjustment or external hydraulic drive, with low reset efficiency and poor compatibility, which seriously restricts drilling efficiency and reliability of optical cable deployment.

[0004] Current anchoring technologies mostly use spring claws or wedge-shaped block clamping designs, such as presetting spring tension to achieve static contact between the claws and the inner wall of the drill pipe. This type of solution has obvious limitations: first, fixed-size claws can only match drill pipes with specific inner diameters, and when facing inner diameter fluctuations, the anchoring force is insufficient or over-extruded, causing the device to get stuck; second, the reset process requires an external power source to drive the claws to close, making wiring difficult in the narrow bore of the drill pipe and causing a high failure rate.

[0005] Application Contents

[0006] In view of this, the present application proposes a drilling optical cable retraction and release anchoring device, which aims to solve the problems that the existing anchoring device cannot adapt to multi-inner diameter drill rods, has low resetting efficiency and poor optical cable release stability.

[0007] The technical solution of this application is implemented as follows:

[0008] The present application provides a drilling optical cable retracting and anchoring device, comprising a pay-off frame and an anchoring mechanism, wherein the anchoring mechanism comprises:

[0009] An installation sleeve, fixedly arranged at one end of the pay-off frame;

[0010] The connecting seat is sleeved on the outer peripheral side of the installation sleeve and can slide along the axial direction of the installation sleeve;

[0011] Multiple rib assemblies are evenly distributed on the outer circumference of the installation sleeve, one end of the rib assembly is hinged to the pay-off frame, and the other end is hinged to the connecting seat, and the rib assembly has radial deformation capability to adapt to the change of the inner diameter of the drill pipe;

[0012] The wireless control driving component is arranged in the installation sleeve and is used to drive the connecting seat to slide axially to adjust the radial opening angle of the umbrella rib component so that the umbrella rib component abuts against the inner wall of the drill pipe to achieve anchoring.

[0013] On the basis of the above technical solution, preferably, the mounting sleeve includes a coaxially connected anchoring section and a driving section, one end of the anchoring section is fixedly connected to one end of the pay-off frame, and the other end of the anchoring section is fixedly connected to the driving section, the outer diameter of the anchoring section is smaller than the outer diameter of the driving section, the connecting seat sliding sleeve is arranged on the anchoring section, and the maximum radial envelope diameter of the umbrella rib assembly when it is in a fully retracted state does not exceed the outer diameter of the pay-off frame, and the wireless control driving assembly is arranged in the driving section.

[0014] On the basis of the above technical solution, preferably, the umbrella rib assembly includes a first rib rod, a second rib rod and an anchor, the first rib rod and the second rib rod are respectively hinged to the anchor, the end of the first rib rod away from the anchor is hinged to the connecting seat, the end of the second rib rod away from the anchor is hinged to the pay-off frame, and the sum of the projection length of the umbrella rib assembly along the axial direction of the anchor section and the axial length of the connecting seat in a fully retracted state is less than the axial length of the anchor section.

[0015] On the basis of the above technical solution, preferably, the driving section is provided with an installation cavity for accommodating a wireless control driving component, the wireless control driving component includes a wireless control module, a battery and a plurality of linear modules, and the linear module includes a driving motor, a lead screw, a nut seat and a driving rod;

[0016] The screw rod is rotatably arranged in the installation cavity along the axial direction of the driving section, and the output shaft of the driving motor is fixedly connected to one end of the screw rod;

[0017] The nut seat is threadedly connected to the lead screw, one end of the driving rod is fixedly connected to the nut seat, and the other end movably passes through the outside of the driving section and is fixedly connected to the connecting seat;

[0018] The wireless control module, the battery and the drive motor are electrically connected.

[0019] On the basis of the above technical solution, preferably, the driving section includes a fixed tube body, an inner tube body and an outer tube body;

[0020] The fixed tube body and the end of the anchoring section away from the line-releasing member are coaxially fixedly connected, the inner tube body is coaxially fixedly arranged on the inner wall of the end of the fixed tube body away from the anchoring section, and the outer tube body is coaxially fixedly arranged on the outer wall of the end of the fixed tube body away from the anchoring section;

[0021] The installation cavity comprises a first installation cavity and a second installation cavity. The first installation cavity is formed by enclosing the inner tube body and the outer tube body, and the second installation cavity is defined in the axial direction of the inner wall of the fixed tube body.

[0022] A mounting bracket is arranged in the first mounting cavity, and the linear module and the battery are evenly arranged in the mounting bracket;

[0023] One end of the driving rod is fixedly connected to the nut seat, and the other end movably passes through the second installation cavity and is fixedly connected to the connecting seat, and the driving rod and the second installation cavity are dynamically sealed.

[0024] On the basis of the above technical solution, preferably, it further includes a cable release assembly, the cable release assembly includes a cable release rod and an optical cable, the outer peripheral wall of the cable release rod is provided with a winding groove with a spiral structure, the optical cable is wound in sections in the winding groove along the axial direction of the cable release rod, each section is wound in several layers, and each section is arranged at intervals;

[0025] The pay-off frame includes a fixed housing, a rotation limiting mechanism, a transmission sleeve and a trigger control mechanism;

[0026] The transmission sleeve is coaxially sleeved on the inner side of the fixed housing, and the end of the optical cable not wound on the cable release rod is rotatably inserted into the transmission sleeve. The side wall of the transmission sleeve is provided with a guide unit spirally matched with the winding groove;

[0027] The rotation limiting mechanism is arranged between the fixed shell and the transmission sleeve, and the trigger control mechanism is arranged on the optical cable release path at the top of the fixed shell, which is used to respond to the triggering or disengagement of the optical cable and correspondingly drive the rotation limiting mechanism to release or limit the circumferential rotation of the transmission sleeve relative to the fixed shell.

[0028] On the basis of the above technical solution, preferably, the rotation limiting mechanism includes a locking tooth and a locking piece, an annular step is provided on the outer peripheral side of the upper end of the transmission sleeve, the locking teeth are distributed on the outer peripheral wall of the annular step, at least two locking pieces are provided, which are evenly arranged on the annular step and connected to the driving assembly, and a mating tooth meshing with the locking tooth is provided on the inner side of the locking piece, and the trigger control mechanism is used to drive the locking piece to move up and down along the axial direction of the transmission sleeve.

[0029] On the basis of the above technical solution, preferably, the trigger control mechanism includes a trigger plate, an elastic member and a transmission connecting rod, wherein the trigger plate is an annular structure coaxially located on the top surface of the fixed shell, one end of the transmission connecting rod is fixedly connected to the trigger plate, and the other end vertically moves through the fixed shell and is fixedly connected to the locking member, and the elastic member is sleeved on the transmission connecting rod, one end of which is abutted against the trigger plate, and the other end is abutted against the top surface of the fixed shell.

[0030] On the basis of the above technical solution, preferably, the side wall of the transmission sleeve is provided with multiple groups of guide units at equal intervals along the circumferential direction, each group of guide units includes a plurality of rolling bodies arranged along the spiral direction, and the spiral direction of the multiple groups of guide units is consistent with the spiral direction of the winding groove.

[0031] On the basis of the above technical solution, preferably, the pay-off rack also includes a plurality of guide wheel groups, which are arranged in a spiral shape along the axial direction of the fixed shell, and the guide wheel group includes a pair of guide wheels that rotate relatively, and the axis of the guide wheel is perpendicular to the axis of the fixed shell, and an optical cable channel is formed between the two guide wheels.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The wireless control drive assembly drives the connecting seat to slide axially, driving the articulated rib assembly to expand or retract radially, and uses the radial deformation ability of the rib assembly to adapt to different drill pipe inner diameters to achieve stable anchoring; at the same time, the wireless control method gets rid of the wiring limitations of traditional hydraulic or mechanical drives, significantly improves the anchoring-resetting efficiency during continuous operation of multiple drill pipe short sections, ensures the smooth release and reliable fixation of the drilling optical cable under complex well conditions, and solves the problems of poor adaptability of the anchoring device, cumbersome reset and unstable release of the optical cable in the prior art.

[0034] (2) The sum of the projected length of the rib assembly along the axial direction of the anchoring section and the axial length of the connecting seat in the fully retracted state is less than the axial length of the anchoring section. This structural arrangement ensures that when the rib assembly is fully retracted, its overall length does not exceed the length of the anchoring section, which means that the entire device remains compact in the retracted state. In particular, the rib assembly is hidden between the pay-off frame and the driving section, which does not increase the maximum outer diameter of the pay-off frame due to the rib assembly extending out of the pay-off frame, so that the anchoring mechanism can anchor the pay-off frame and the inner wall of the drill pipe according to the inner diameters of the drill pipe.

[0035] (3) The coaxial design of the fixed tube, inner tube and outer tube enhances the overall structural stability of the drive section and ensures reliability during operation. The reasonable division of the installation cavity and the uniform arrangement of components improve the utilization of the internal space, avoid interference between components, and improve the operating efficiency of the device.

[0036] (4) Through the segmented optical cable design of the cable release rod, and the cooperation between the drive assembly and the rotation limiting mechanism, the optical cable can be lowered in sections according to actual needs, avoiding the accumulation or entanglement of the optical cable caused by inappropriate lowering speed, and ensuring the smoothness and reliability of the cable release process. The device ensures the smooth and orderly lowering of the optical cable through reasonable structural design and precise control mechanism. Each section of the optical cable can be released according to the predetermined trajectory, avoiding problems such as entanglement and accumulation, and ensuring the smoothness and reliability of the cable release process.

[0037] (5) The drive assembly can accurately control the movement of the locking member through the coordinated action of the trigger plate, the elastic member and the transmission connecting rod, and timely release or limit the circumferential rotation of the transmission sleeve to ensure that each section of the optical cable can be released at the right time, ensuring that the optical cable is smoothly lowered without entanglement or jamming, thereby improving the performance, stability and safety of the cable-releasing device.

[0038] (6) The spiral cooperation between the guide unit and the winding groove directly converts the rotational motion of the cable release rod into axial linear motion. When the cable release rod rotates around its own axis, the spiral contact surface between the guide unit and the transmission sleeve produces relative displacement, driving the cable release assembly to move downward as a whole. This design achieves strict synchronization between rotational release and axial displacement, avoiding the problem of cable accumulation or tensile breakage caused by the mismatch between the rotation speed and the lowering speed in traditional devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It is a schematic diagram of the three-dimensional structure of the optical cable retracting and anchoring device while drilling disclosed in the present application;

[0041] Figure 2 This is a schematic diagram of the assembly structure of the pay-off frame and anchoring mechanism disclosed in this application;

[0042] Figure 3 A schematic diagram of the three-dimensional structure of the anchoring mechanism disclosed in this application;

[0043] Figure 4 It is a schematic plan view of the anchoring state of the anchoring mechanism disclosed in the present application and the inner wall of the drill pipe;

[0044] Figure 5 It is a schematic diagram of the three-dimensional structure of the pay-off frame disclosed in this application;

[0045] Figure 6It is a schematic diagram of the assembly structure of the transmission sleeve, the rotation limiting mechanism and the trigger control mechanism disclosed in this application;

[0046] Figure 7 It is a three-dimensional structural schematic diagram of the rotation limiting mechanism disclosed in this application;

[0047] Figure 8 It is a schematic plan view of the assembly structure of the cable-releasing assembly and the pay-off frame disclosed in the present application;

[0048] Reference numerals:

[0049] 1. Pay-off rack; 2. Anchor mechanism; 22. Connecting seat; 23. Umbrella rib assembly; 231. First rib rod; 232. Second rib rod; 233. Anchor piece; 21. Mounting sleeve; 211. Anchor section; 212. Driving section; 2120. Mounting cavity; 2120a. First mounting cavity; 2120b. Second mounting cavity; 2121. Fixed tube body; 2122. Inner tube body; 2123 Outer tube body; 213. Mounting bracket; 24. Control drive assembly; 241. Wireless control module; 242. Battery; 243. Linear module; 2431. Drive Motor; 2432, screw rod; 2433, nut seat; 2434, driving rod; 3, cable release assembly; 31, cable release rod; 32, optical cable; 311, winding groove; 11, fixed shell; 12, rotation limiting mechanism; 13, transmission sleeve; 14, trigger control mechanism; 15, guide unit; 151, rolling body; 121, locking tooth; 122, locking member; 131, annular step; 1221, matching tooth; 141, trigger plate; 142, elastic member; 143, transmission connecting rod; 111, guide wheel group; 1110, guide wheel; 16, support member. DETAILED DESCRIPTION

[0050] The following will be combined with the implementation methods of this application to clearly and completely describe the technical solutions in the implementation methods of this application. Obviously, the described implementation methods are only part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] like Figure 1 As shown, combined Figure 2-4 The embodiment of the present application discloses a device for retracting and anchoring a drilling optical cable 32, including a pay-off frame 1 and an anchoring mechanism 2.

[0052] The pay-off frame 1 is used to ensure smooth laying of the optical cable 32 during the drilling process.

[0053] The anchoring mechanism 2 is used to anchor the pay-off frame 1 to the inner wall of the drill pipe to ensure that the pay-off frame 1 is synchronously lowered with the drill pipe in the well. Specifically, the anchoring mechanism 2 includes a mounting sleeve 21, a connecting seat 22, a plurality of rib assemblies 23 and a wireless control drive assembly 24.

[0054] Among them, the mounting sleeve 21 is fixedly arranged at one end of the pay-off frame 1. In actual use scenario, the pay-off frame 1 is vertically located inside the drill pipe. Therefore, the mounting sleeve 21 is fixedly connected to the bottom end of the pay-off frame 1. In this embodiment, the mounting sleeve 21 is a cylindrical structure, and one end of the mounting sleeve 21 is coaxially fixedly connected to the bottom end of the pay-off frame 1. The purpose is to facilitate the cable release rod 31 described below to pass through the pay-off frame 1 and the mounting sleeve 21. The entire mounting sleeve 21 serves as the base of the anchoring mechanism 2.

[0055] The connecting seat 22 is sleeved on the outer peripheral side of the mounting sleeve 21 and can slide axially along the mounting sleeve 21. Multiple umbrella rib components 23 are evenly distributed on the outer peripheral side of the mounting sleeve 21. One end of the umbrella rib component 23 is hinged to the wire frame 1, and the other end is hinged to the connecting seat 22. The umbrella rib component 23 has radial deformation ability to adapt to the change of the inner diameter of the drill pipe.

[0056] Since one end of the rib assembly 23 is hinged to the pay-off frame 1, and this end of the rib assembly 23 cannot slide axially along the mounting sleeve 21, but can only flip over in the axial direction relative to the pay-off frame 1, the rib assembly 23 can be opened or closed in the radial direction of the mounting sleeve 21 by sliding the connecting seat 22 axially along the mounting sleeve 21, so as to be reliably anchored in drill rods with different inner diameters, thereby improving adaptability and stability.

[0057] The rib assembly 23 is connected to the pay-off frame 1 and the connection seat 22 by a hinge, ensuring uniform force during the anchoring process and avoiding the problem of insufficient anchoring force or excessive extrusion due to changes in the inner diameter. In addition, the radial deformation design enables the rib assembly 23 to stably abut the inner wall of the drill pipe during anchoring, thereby improving the stability and reliability of the optical cable 32 during the retraction and release process.

[0058] In order to realize the axial sliding of the connecting seat 22 in the mounting sleeve 21, this embodiment is realized by a wireless control driving component 24. Specifically, the wireless control driving component 24 is arranged in the mounting sleeve 21, and is used to drive the connecting seat 22 to slide axially to adjust the radial angle of the umbrella rib component 23, so that the umbrella rib component 23 abuts against the inner wall of the drill pipe to achieve anchoring.

[0059] The introduction of the wireless control drive assembly 24 avoids the problem of the traditional mechanical anchoring structure relying on manual adjustment or external hydraulic drive. Through wireless control, the axial sliding of the connecting seat 22 can be accurately driven to adjust the opening angle of the rib assembly 23 so that it can quickly adapt to the change of the inner diameter of the drill pipe. This not only improves work efficiency, but also reduces the complexity and failure risk of on-site operations.

[0060] In addition, since the expansion and contraction of the rib assembly 23 can be controlled by wireless control, the rib assembly 23 can be used to anchor the inner wall of the drill pipe during the continuous splicing of the drill pipe short sections, effectively reducing the friction between the entire anchoring device and the inner wall of the drill pipe, thereby improving the durability and service life of the anchoring device.

[0061] When the drilling process is completed, the anchoring device can be recovered through wireless control, which reduces manual intervention, maintenance costs and operational complexity.

[0062] The wireless control driving component 24 drives the connecting seat 22 to slide axially, thereby driving the articulated rib assembly 23 to expand or retract radially, and utilizes the radial deformation ability of the rib assembly 23 to adapt to different drill pipe inner diameters to achieve stable anchoring; at the same time, the wireless control method gets rid of the wiring limitations of traditional hydraulic or mechanical drives, significantly improves the anchoring-resetting efficiency during continuous operation of multiple drill pipe short sections, ensures the smooth release and reliable fixation of the drilling optical cable 32 under complex well conditions, and solves the problems of poor adaptability of the anchoring device, cumbersome reset and unstable release of the optical cable 32 in the prior art.

[0063] As some preferred embodiments, the mounting sleeve 21 includes a coaxially connected anchoring section 211 and a driving section 212, one end of the anchoring section 211 is fixedly connected to one end of the pay-off frame 1, and the other end of the anchoring section 211 is fixedly connected to the driving section 212, the outer diameter of the anchoring section 211 is smaller than the outer diameter of the driving section 212, the connecting seat 22 is slidably sleeved on the anchoring section 211, and the maximum radial envelope diameter of the umbrella rib assembly 23 does not exceed the outer diameter of the pay-off frame 1 when the umbrella rib assembly 23 is in a fully retracted state, and the wireless control driving assembly 24 is arranged in the driving section 212.

[0064] By making the outer diameter of the anchoring section 211 smaller than the outer diameter of the driving section 212, the maximum radial envelope diameter of the umbrella tendon assembly 23 does not exceed the outer diameter of the pay-off frame 1 in the fully retracted state. This structural design ensures that the umbrella tendon assembly 23 can be tightly wrapped around the outer peripheral side of the anchoring section 211 after being folded, and will not protrude from the outside of the pay-off frame 1 and the driving section 212. This structural setting makes the entire retractable anchoring device more compact, reduces the volume, and can adapt to the anchoring of different drill pipe inner diameters. It only needs to consider that the maximum outer diameter of the pay-off frame 1 is smaller than the minimum inner diameter of the drill pipe. In this way, no matter where the pay-off frame 1 is inside the drill pipe, it can be effectively anchored to the inner wall of the drill pipe by opening the umbrella tendon assembly 23.

[0065] As some embodiments, the rib assembly 23 includes a first rib rod 231, a second rib rod 232 and an anchor 233. The first rib rod 231 and the second rib rod 232 are respectively hingedly connected to the anchor 233. The end of the first rib rod 231 away from the anchor 233 is hingedly connected to the connection seat 22, and the end of the second rib rod 232 away from the anchor 233 is hingedly connected to the pay-off frame 1. This hinge connection design allows the rib assembly 23 to be flexibly unfolded and retracted, and the hinge connection provides a degree of rotational freedom, so that the rib assembly 23 can adjust its state as needed, and enhance its ability to adapt to anchoring of different drill pipe inner diameters.

[0066] The sum of the projected length of the rib assembly 23 along the axial direction of the anchoring section 211 and the axial length of the connecting seat 22 in the fully retracted state is less than the axial length of the anchoring section 211. This structural arrangement ensures that when the rib assembly 23 is fully retracted, its overall length will not exceed the length of the anchoring section 211, which means that the entire device remains compact in the retracted state, especially the rib assembly 23 is hidden between the pay-off frame 1 and the driving section 212, and the maximum outer diameter of the pay-off frame 1 will not be increased due to the rib assembly 23 extending out of the pay-off frame 1, so that the anchoring mechanism 2 can anchor the pay-off frame 1 and the inner wall of the drill pipe according to different inner diameters of the drill pipe.

[0067] In this embodiment, a plurality of rib assemblies 23 form an umbrella-like structure to provide support and anchoring for the inner wall of the drill pipe. The design of the rib assembly 23 effectively increases the contact area with the inner wall of the drill pipe when the structure is deployed, thereby enhancing the anchoring stability.

[0068] As some embodiments, an installation cavity 2120 for accommodating the wireless control drive component 24 is provided in the drive section 212. The design of the installation cavity 2120 ensures that the structure of the wireless control drive component 24 is compact and not easily affected by the external environment, and also facilitates the installation and maintenance of the wireless control drive component 24.

[0069] The wireless control driving assembly 24 of this embodiment includes a wireless control module 241 , a battery 242 and a plurality of linear modules 243 . The linear modules 243 include a driving motor 2431 , a screw rod 2432 , a nut seat 2433 and a driving rod 2434 .

[0070] The drive motor 2431 serves as a driving source and is responsible for providing rotational power. The battery 242 provides electrical energy for the drive motor 2431 . The output shaft of the drive motor 2431 is fixedly connected to one end of the screw rod 2432 . The rotation of the drive motor 2431 is transmitted to the nut seat 2433 through the screw rod 2432 , thereby driving the movement of the drive rod 2434 .

[0071] The screw rod 2432 is rotatably arranged in the installation cavity 2120 along the axial direction of the driving section 212. The rotation of the screw rod 2432 converts the rotational motion into the linear motion. The screw rod 2432 is threadedly connected to the nut seat 2433, and the nut seat 2433 is pushed to move axially when rotating. The nut seat 2433 is threadedly connected to the screw rod 2432, and moves axially with the rotation of the screw rod 2432. The nut seat 2433 drives the movement of the driving rod 2434 by connecting with the driving rod 2434.

[0072] One end of the driving rod 2434 is fixedly connected to the nut seat 2433, and the other end is movable through the outside of the driving section 212 and fixedly connected to the connecting seat 22. The movement of the driving rod 2434 drives the connecting seat 22 to slide axially on the anchoring section 211, thereby driving the umbrella tendon assembly 23 to unfold and complete the anchoring of the inner wall of the drill pipe.

[0073] In this embodiment, when the driving rod 2434 translates toward the pay-off frame 1, the connecting seat 22 slides in the axial direction of the anchoring section 211, thereby driving the multiple umbrella rib assemblies 23 to expand synchronously to achieve anchoring to the inner wall of the drill pipe. When the anchoring device needs to be recovered, the driving rod 2434 translates in the direction away from the pay-off frame 1, and then the driving rod 2434 drives the multiple umbrella rib assemblies 23 to close on the anchoring section 211 through the connecting seat 22, so that the pay-off frame 1 is separated from the anchoring connection with the inner wall of the drill pipe.

[0074] In this embodiment, the wireless control module 241, the battery 242 and the drive motor 2431 are electrically connected. The wireless control module 241 can be any one of Bluetooth, ZigBee and low-frequency electromagnetic waves. The operator can send wireless signals on the bottom surface, and the wireless control module 241 can send and receive signals and drive the drive motor 2431 to rotate forward or reverse. The introduction of the wireless control drive component 24 avoids the problem that the traditional mechanical anchoring structure relies on manual adjustment or external hydraulic drive, and facilitates the rapid retraction and release of the optical cable 32.

[0075] In order to realize the installation of the wireless control driving component 24 in the driving section 212, the present embodiment sets a structure for the driving section 212. Specifically, the driving section 212 includes a fixed tube body 2121, an inner tube body 2122 and an outer tube body 2123.

[0076] The fixed tube body 2121 and the end of the anchoring section 211 away from the line-releasing member are coaxially fixedly connected, the inner tube body 2122 is coaxially fixedly arranged on the inner wall of the fixed tube body 2121 away from the anchoring section 211, and the outer tube body 2123 is coaxially fixedly arranged on the outer wall of the fixed tube body 2121 away from the anchoring section 211; the installation cavity 2120 includes a first installation cavity 2120a and a second installation cavity 2120b, the first installation cavity 2120a is enclosed between the inner tube body 2122 and the outer tube body 2123, and the second installation cavity 2120b is limited in the axial direction of the inner wall of the fixed tube body 2121.

[0077] The installation cavity 2120 is divided into a first installation cavity 2120a and a second installation cavity 2120b, and the first installation cavity 2120a is formed by the enclosure of the inner and outer tube bodies 2123, and the second installation cavity 2120b is defined by the inner wall of the fixed tube body 2121. This structural setting effectively utilizes the internal space, enables the various components to be arranged reasonably, and avoids space waste and interference between components.

[0078] The first mounting cavity 2120a is provided with a mounting bracket 213, and the linear module 243 and the battery 242 are evenly arranged in the mounting bracket 213. This arrangement ensures the stability of the assembly, so that the linear module 243 and the battery 242 can be firmly fixed, avoiding looseness or displacement caused by vibration or collision. In addition, by setting the mounting bracket 213 in the first mounting cavity 2120a, the overall structural strength formed by the mounting bracket 213, the inner tube body 2122 and the outer tube body 2123 is higher, and together with the fixed tube body 2121, the driving section 212 is formed as a whole, so that after the entire driving section 212 accommodates the relevant structural components inside, it can still maintain the overall structural strength and rigidity, avoiding setting only one chamber in the driving section 212, resulting in the driving section 212 being in a hollow chamber, causing the driving section 212 to have a weak structure. At the same time, by setting the fixed tube body 2121, the inner tube body 2122 and the outer tube body 2123 in a split manner, the components in the wireless control driving assembly 24 can be installed smoothly.

[0079] For example, first, the mounting bracket 213 is sleeved on the outside of the inner tube body 2122, and then the inner tube body 2122 and the inner wall of the fixed tube body 2121 are assembled through threaded connection, and then the drive motor 2431, the screw rod 2432, the nut seat 2433 and the battery 242 are installed inside the mounting bracket 213. When installing the drive rod 2434, one end of the drive rod 2434 is moved through the second mounting cavity 2120b and enters the first mounting cavity 2120a and is fixedly connected to the nut seat 2433. The drive rod 2434 and the second mounting cavity 2120b are connected by a dynamic seal.

[0080] The coaxial design of the fixed tube body 2121, the inner tube body 2122 and the outer tube body 2123 enhances the overall structural stability of the driving section 212 and ensures reliability during operation. The reasonable division of the installation cavity 2120 and the uniform arrangement of the components improve the utilization of the internal space, avoid interference between the components, and improve the operating efficiency of the device.

[0081] In order to achieve orderly laying of the optical cable 32 , the present embodiment further provides a cable laying assembly 3 that cooperates with the pay-off frame 1 .

[0082] Refer to the attached Figure 1 , 5 -8, the cable-releasing assembly 3 includes a cable-releasing rod 31 and an optical cable 32. The cable-releasing rod 31 is used to store and guide the orderly release of the optical cable 32. Its design ensures that the optical cable 32 can be arranged in an orderly manner along its axial direction. In this embodiment, the cable-releasing rod 31 is hollow in design, which can reduce its own gravity and avoid the need for a large kinetic energy drive during the lowering process. The cable-releasing rod 31 can be driven to rotate by a central control motor.

[0083] In this embodiment, the outer wall of the cable release rod 31 is provided with a winding groove 311 of a spiral structure, so that the optical cable 32 can be evenly coiled along the path of the winding groove 311. At the same time, the spiral structure can ensure that the optical cable 32 is arranged in an orderly manner in the axial direction of the cable release rod 31 after the innermost layer of the optical cable 32 is wound into the winding groove 311, and prevent the wound optical cable 32 from moving axially along the cable release rod 31.

[0084] The optical cable 32 is wound in sections along the axial direction of the cable release rod 31, each section is wound in several layers, and each section is set at intervals. In this embodiment, by winding the optical cable 32 in sections, each section has a certain interval, which reduces the friction and mutual interference between the optical cables 32, and helps to reduce the risk of cross-overlapping of the optical cable 32 after the optical cable 32 is wound in the axial direction of the entire cable release rod 31, thereby ensuring the orderly release of the subsequent optical cable 32 during the lowering process and avoiding the wire jam phenomenon. The number of winding layers of each section of the optical cable 32 is consistent, ensuring that the optical cable 32 can be evenly released in sections and can be released smoothly.

[0085] As some examples, for example, the total length of the optical cable 32 needs to be 3000m, the total length of each section of the optical cable 32 can be set to 30m, so that it is divided into 100 sections on the cable-releasing rod 31. At the same time, each section is wound with layers of optical cable 32. The number of layers and the circumferential length of each section of the optical cable 32 wound on the cable-releasing rod 31 depend on the assembly of each section of the optical cable 32 and the diameter of the cable-releasing rod 31. The fewer the number of layers and the section length, the less likely it is to cause cable jamming during the releasing process. The above settings can be determined according to actual conditions.

[0086] In the above embodiment, the spacing between the segments is at least greater than 11 times the diameter of the winding groove 31, so that two adjacent segments of the optical cable 32 can be spaced apart, thereby cooperating with the pay-off assembly to achieve segmented release of the optical cable 32.

[0087] The optical cable 32 is coiled in sections, and a certain distance is maintained between each section of the optical cable 32, which not only reduces the friction and mutual interference between the optical cables 32, but also avoids the risk of mutual entanglement and overlap between the optical cables 32, ensuring the smooth progress of the subsequent release process.

[0088] The pay-off frame 1 comprises a fixed housing 11 , a rotation limiting mechanism 12 , a transmission sleeve 13 and a trigger control mechanism 14 .

[0089] The fixed housing 11 provides a support frame to ensure the stability of the positions of the various components. It is the basic support part of the wire-releasing device and maintains the rigid structure of the entire wire-releasing system. In this embodiment, the cross-section of the fixed housing 11 is circular, which facilitates the rotation of the transmission sleeve 13 inside the fixed housing 11. At the same time, the outer side of the fixed housing 11 is circular, which is convenient for implantation into the drill rod.

[0090] The transmission sleeve 13 is coaxially sleeved on the inner side of the fixed housing 11, and the end of the cable release rod 31 on which the optical cable 32 is not wound is inserted into the transmission sleeve 13 and can rotate relative to the pay-off frame 1. The side wall of the transmission sleeve 13 is provided with a guide unit 15 that is spirally matched with the winding groove 311. Through the setting of the guide unit 15, when the cable release rod 31 rotates around its own axis, the guide unit 15 and the transmission sleeve 13 can generate a spiral motion, so that the cable release assembly 3 moves downward relative to the pay-off frame 1, so that the optical cable 32 on the cable release rod 31 is released sequentially from bottom to top.

[0091] In this embodiment, only when the transmission sleeve 13 is kept in a fixed position in the fixed housing 11, the cable pay-off rod 31 can perform a spiral motion with the transmission sleeve 13 through the guide unit 15, thereby causing the cable pay-off rod 31 to move downward relative to the pay-off frame 1. In order to realize the segmented release of the optical cable 32 on the cable pay-off rod 31, this embodiment focuses on realizing the segmented release of the optical cable 32 through the cooperation among the rotation limiting mechanism 12, the trigger control mechanism 14 and each segment of the optical cable 32.

[0092] Specifically, the rotation limiting mechanism 12 is arranged between the fixed shell 11 and the transmission sleeve 13, and is used for limiting or releasing the circumferential rotation of the transmission sleeve 13 relative to the fixed shell 11. When the transmission sleeve 13 and the fixed shell 11 are locked in position, that is, the transmission sleeve 13 cannot rotate circumferentially relative to the fixed shell 11, at this time, the cable release rod 31 undergoes spiral motion with the transmission sleeve 13 through the guide unit 15, so that the cable release rod 31 continues to descend relative to the pay-out frame 1, but the cable release rod 31 cannot match the release speed of each section of the optical cable 32 when it continues to descend. This will result in that during the continuous descent of the cable release rod 31, the optical cable 32 on the cable release rod 31 has not been fully released, and an axial extrusion force will be applied to the upper end surface of the transmission sleeve 13. At this time, the cable release rod 31 continues to descend, which will cause the optical cable 32 to be squeezed and damaged at the junction of the transmission sleeve 13 and the cable release rod 31, thereby causing the release of the optical cable 32 to be stationary.

[0093] Therefore, when the rotation limiting mechanism 12 releases the circumferential rotation of the transmission sleeve 13 relative to the fixed housing 11, the transmission sleeve 13 can rotate circumferentially relative to the fixed housing 1111. Since the guide unit 15 on the transmission sleeve 13 cooperates with the winding groove 311 on the cable release rod 31, when the cable release rod 31 rotates, since there is no constraint on the circumferential direction of the transmission sleeve 13, the cable release rod 31 drives the transmission sleeve 13 to rotate synchronously with the fixed housing 11 through the guide unit 15, thereby preventing the cable release rod 31 from continuing to move axially. In this way, during the circumferential rotation of the cable release rod 31, the optical cable 32 of the corresponding section on the cable release rod 31 can be released.

[0094] Since the optical cable 32 on the cable release rod 31 is arranged in sections and intervals, it is necessary to release the multiple sections of optical cable 32 on the cable release rod 31 in sequence from bottom to top. When the lowest optical cable section is released, the transmission sleeve 13 needs to rotate relative to the fixed shell 11. When two adjacent optical cable sections are in transition, the transmission sleeve 13 needs to keep a fixed position relative to the fixed shell 11.

[0095] To this end, the restriction and release timing of the rotation limiting mechanism 12 requires precise control. This embodiment solves this problem through a trigger control mechanism 14. Specifically, the trigger control mechanism 14 is arranged on the release path of the optical cable 32 at the top of the fixed housing 11, and is used to respond to the triggering or disengagement of the optical cable 32, and correspondingly drive the rotation limiting mechanism 12 to release or limit the circumferential rotation of the transmission sleeve 13 relative to the fixed housing 11.

[0096] In the initial state, when the cable release rod 31 is inserted into the transmission sleeve 13, the trigger control mechanism 14 is not driven by external force, the transmission sleeve 13 and the fixed housing 11 keep their positions fixed, and the cable release rod 31 moves downward relative to the transmission sleeve 13 during the rotation process. When the bottom surface of the lowest section of the optical cable 32 on the cable release rod 31 contacts the trigger control mechanism 14 and applies downward pressure from the trigger control mechanism 14 as the cable release rod 31 moves downward, the trigger control mechanism 14 drives the rotation limiting mechanism 12 to operate in response to the downward pressure of the optical cable 32, thereby releasing the circumferential rotation of the transmission sleeve 13 relative to the fixed housing 11. At this time, the cable release rod 31 and the transmission sleeve 13 are synchronously moved relative to the fixed housing 11. 1 circumferential rotation, during the circumferential rotation of the cable release rod 31, the section of optical cable 32 in contact with the trigger control mechanism 14 is released. When the innermost layer of the section of optical cable 32 is released and the optical cable 32 loses the downward pressure on the trigger control mechanism 14, the trigger control mechanism 14 drives the rotation limiting mechanism 12 to operate, thereby locking the circumferential rotation of the transmission sleeve 13 relative to the fixed housing 11. At this time, the cable release rod 31 continues to move downward at one end until the bottom end of the upper section of optical cable 32 touches and presses the trigger control mechanism 14, thereby completing the rotation release of the transmission sleeve 13, thereby releasing the upper section of optical cable 32. Repeating the above process can complete the smooth release of all optical cable sections on the cable release rod 31.

[0097] By precisely controlling the rotation limiting mechanism 12 and the trigger control mechanism 14, it is ensured that the cable release rod 31 will not cause the optical cable 32 to be squeezed or damaged during the process of releasing the optical cable 32. When the cable release rod 31 moves downward, the release speed of the optical cable segment is synchronized with the moving speed of the cable release rod 31, which prevents the optical cable 32 from being over-squeezed or incompletely released. In addition, the cooperation between the rotation limiting mechanism 12 and the trigger control mechanism 14 enables the release process of the optical cable 32 to be precisely controlled. The trigger control mechanism 14 responds to the downward pressure of the optical cable 32, and timely releases or limits the circumferential rotation of the transmission sleeve 13, ensuring that each section of the optical cable 32 can be released at the right time, avoiding any lag or misalignment during the release of the optical cable 32.

[0098] The present application uses the segmented optical cable 32 design of the cable release rod 31, and the cooperation between the trigger control mechanism 14 and the rotation limiting mechanism 12, so that the optical cable 32 can be lowered in sections according to actual needs, avoiding the accumulation or entanglement of the optical cable 32 caused by inappropriate lowering speed, and ensuring the smoothness and reliability of the release process. The device ensures the smooth and orderly release of the optical cable 32 through reasonable structural design and precise control mechanism. Each section of the optical cable 32 can be released according to a predetermined trajectory, avoiding problems such as entanglement and accumulation, and ensuring the smoothness and reliability of the release process.

[0099] The rotation limiting mechanism 12 includes a locking tooth 121 and a locking member 122. An annular step 131 is provided on the outer peripheral side of the upper end of the transmission sleeve 13. The locking teeth 121 are distributed on the outer peripheral wall of the annular step 131. The locking teeth 121 can mesh with the matching teeth 1221 on the inner side of the locking member 122 to prevent the circumferential rotation of the transmission sleeve 13 and ensure that the optical cable 32 is released in sections according to a predetermined path.

[0100] At least two locking members 122 are provided, which are evenly arranged on the annular step 131 and connected to the trigger control mechanism 14. The inner side of the locking member 122 is provided with a matching tooth 1221 that meshes with the locking tooth 121. The trigger control mechanism 14 is used to drive the locking member 122 to move up and down along the axial direction of the transmission sleeve 13. The setting of the annular step 131 provides an installation position for the locking member 122. Through the action of the trigger control mechanism 14, it is ensured that the locking member 122 can move up and down smoothly and accurately mesh with or disengage from the locking tooth 121. In this embodiment, the teeth of the locking tooth 121 are arranged downward on the side of the annular step 131, and the teeth of the matching tooth 1221 are upward. The locking member 122 is placed on the annular step 131, and there is a certain moving space between the matching tooth 1221 and the locking tooth 121, so that it can be ensured that the locking member 122 can move up and down within the moving space, thereby realizing the meshing or disengagement of the matching tooth 1221 and the locking tooth 121.

[0101] In order to achieve circumferential locking or releasing between the transmission sleeve 13 and the fixed housing 11 under different states of the rotation limiting mechanism 12 , this embodiment shows a structural mode of the trigger control mechanism 14 .

[0102] Specifically, the trigger control mechanism 14 includes a trigger plate 141, an elastic member 142 and a transmission connecting rod 143. The trigger plate 141 is an annular structure, which is coaxially located on the top surface of the fixed shell 11. The inner side of the trigger plate 141 and the cable release rod 31 are clearance-matched. One end of the transmission connecting rod 143 is fixedly connected to the trigger plate 141, and the other end vertically moves through the fixed shell 11 and is fixedly connected to the locking member 122. The elastic member 142 is sleeved on the transmission connecting rod 143, one end of which is abutted against the trigger plate 141, and the other end is abutted against the top surface of the fixed shell 11.

[0103] By adopting the above technical solution, in the initial state, due to the elastic force of the elastic member 142, the trigger plate 141 is pushed up, and the trigger plate 141 pulls the locking member 122 upward through the transmission connecting rod 143, so that the matching teeth 1221 on the locking member 122 and the locking teeth 121 are meshed. Since the transmission connecting rod 143 is penetrated in the fixed housing 11 and connected with the locking member 122, the locking member 122 cannot generate circumferential rotation relative to the fixed housing 11, and can only move along the axial direction of the fixed housing 11 under the action of external force. Therefore, after the matching teeth 1221 on the locking member 122 and the locking teeth 121 on the transmission sleeve 13 are meshed and connected, the transmission sleeve 13 and the fixed housing 11 can maintain circumferential rotation lock.

[0104] When the bottom surface of the optical cable 32 on the cable release rod 31 contacts the trigger plate 141 and applies pressure to it, the trigger plate 141 compresses the elastic member 142 after being subjected to the downward pressure, and at the same time drives the transmission link 143 to move downward. During the downward movement of the transmission link 143, the transmission link 143 drives the locking member 122 to move downward, so that the matching teeth 1221 on the locking member 122 are disengaged from the locking teeth 121, thereby releasing the circumferential rotation restriction between the transmission sleeve 13 and the fixed housing 11. When the optical cable segment in contact with the trigger plate 141 is completely released, the pressure exerted by the optical cable 32 on the trigger plate 141 disappears. At this time, under the action of the elastic member 142, the trigger plate 141 moves upward, and drives the locking member 122 to move upward through the transmission connecting rod 143, thereby engaging the matching teeth 1221 on the locking member 122 with the locking teeth 121 again, thereby achieving the circumferential rotation restriction between the transmission sleeve 13 and the fixed housing 11 again. At this time, the cable release rod 31 moves axially by rotating with the transmission sleeve 13 until the bottom end of the next optical cable segment touches the trigger plate 141 and is unlocked.

[0105] In the above embodiment, the gap between the trigger plate 141 and the cable-releasing rod 31 is smaller than the diameter of the optical cable 32. Thus, when the optical cable section on the cable-releasing rod 31 that contacts the trigger plate 141 is in the process of being released, the optical cable 32 is released layer by layer from the outer layer to the inner layer. When only the inner layer optical cable 32 is present, the inner layer optical cable 32 can still be supported against the trigger plate 141, thereby preventing the optical cable 32 from being stuck between the cable-releasing rod 31 and the trigger plate 141 due to the large gap between the trigger plate 141 and the cable-releasing rod 31, causing the cable-releasing to be stopped, thereby ensuring smooth cable-releasing.

[0106] The trigger control mechanism 14 can accurately control the movement of the locking member 122 through the coordinated action of the trigger plate 141, the elastic member 142 and the transmission connecting rod 143, and timely release or limit the circumferential rotation of the transmission sleeve 13, ensuring that each section of the optical cable 32 can be released at the right time, ensuring that the optical cable 32 is smoothly lowered without entanglement or jamming, thereby improving the performance, stability and safety of the line-releasing device.

[0107] In order to ensure that the cable release rod 31 can move axially relative to the transmission sleeve 13 during the rotation along its own axial direction, in this embodiment, a plurality of groups of guide units 15 are provided on the side wall of the transmission sleeve 13 at equal intervals along the circumferential direction. Each group of guide units 15 includes a plurality of rolling bodies 151 arranged along a spiral direction. The rolling bodies 151 can be ball bearings. The spiral direction of the plurality of groups of guide units 15 is consistent with the spiral direction of the winding groove 311.

[0108] With this arrangement, the spiral directions of the guide unit 15 and the winding groove 311 are consistent, so that when the cable release rod 31 rotates, the contact surface of the rolling body 151 and the transmission sleeve 13 produces a spiral pair transmission effect, strictly converting the rotational motion into axial linear displacement. This coupling design ensures the synchronization of the release speed of the optical cable 32 (determined by the rotation speed) and the lowering speed of the cable release rod 31, avoiding the loosening or over-tension of the optical cable 32 due to speed mismatch.

[0109] The multiple groups of guide units 15 are evenly distributed along the circumference of the transmission sleeve 13, ensuring that the guiding force on the optical cable 32 during the release process is annularly symmetrically distributed. This design can offset the unilateral eccentric force when the cable release rod 31 rotates, avoiding the distortion of the optical cable 32 or the wear of the transmission sleeve 13 caused by uneven force.

[0110] The spiral direction of the guide unit 15 is consistent with the spiral direction of the winding groove 311, so that the release trajectory of the optical cable 32 when it is separated from the winding groove 311 completely coincides with the guide path of the guide unit 15. When the cable release rod 31 rotates, the optical cable 32 not only separates in the spiral winding direction of the winding groove 311, but also slides along the spiral path of the guide unit 15, forming a "double spiral synchronous guidance", which significantly improves the stability of the release path.

[0111] The rotational motion of the cable release rod 31 is directly converted into axial linear motion through the spiral cooperation of the guide unit 15 and the winding groove 311. When the cable release rod 31 rotates around its own axis, the spiral contact surface of the guide unit 15 and the transmission sleeve 13 produces relative displacement, driving the cable release assembly 3 to move downward as a whole. This design realizes the strict synchronization of rotation release and axial displacement, avoiding the problem of cable accumulation or tensile breakage caused by the mismatch between the rotation speed and the lowering speed in traditional devices.

[0112] It should be noted that when the cable release rod 31 rotates, the winding groove 311 of its spiral structure forms a spiral pair with the rolling body 151. Since the transmission sleeve 13 is circumferentially constrained by the fixed shell 11, the rotational movement of the cable release rod 31 is forced to be converted into axial displacement of the spiral pair. At this time, the cable release rod 31 only moves axially.

[0113] When the circumferential rotation restriction between the transmission sleeve 13 and the fixed housing 11 is released, the transmission sleeve 13 can rotate freely around its own axis. When the cable-releasing rod 31 rotates, the winding groove 311 of the spiral structure and the rolling element 151 still form a spiral pair. Since the transmission sleeve 13 can rotate freely, the rotational freedom of the spiral pair is released, resulting in the rotational torque of the cable-releasing rod 31 being transmitted to the transmission sleeve 13 through the spiral pair, driving the transmission sleeve 13 to rotate synchronously, and the axial movement demand of the spiral pair is offset by the rotation of the transmission sleeve 13 (that is, the axial thrust generated by the helix angle is converted into the rotational kinetic energy of the transmission sleeve 13). At this time, the transmission sleeve 13 rotates relative to the fixed housing 11 together with the cable-releasing rod 31.

[0114] As some embodiments, the pay-off rack 1 also includes a plurality of guide wheel groups 111, and the plurality of guide wheel groups 111 are arranged in a spiral pattern along the axial direction of the fixed shell 11, and the guide wheel groups 111 include two guide wheels 1110 that rotate relative to each other, and the rotation axis of the guide wheel 1110 is perpendicular to the axis of the fixed shell 1111, and a guide gap is formed between the two guide wheels 1110 for the optical cable 32 to pass through.

[0115] The design of the guide wheel group 111 can effectively reduce the friction of the optical cable 32 during the pay-off process through the optimization of the spiral arrangement and the guide gap. At the same time, the multiple guide wheel groups 111 arranged in a spiral interval make the guidance of the optical cable 32 more precise and less prone to accumulation. When the optical cable 32 passes through the guide wheel group 111, due to the rotation of the guide wheel 1110 and the existence of the guide gap, the optical cable 32 is subjected to more uniform force, avoiding the situation where the optical cable 32 is damaged or the lowering is not smooth due to excessive friction. The axis of the guide wheel 1110 is perpendicular to the axis of the fixed housing 11, which helps the optical cable 32 to be lowered smoothly along the ideal path. Through the continuous action of multiple guide wheel groups 111, the optical cable 32 can be evenly guided, avoiding the bending or entanglement problems that may occur in the optical cable 32 during the pay-off process, thereby improving the stability of the lowering of the optical cable 32.

[0116] As some embodiments, a support member 16 is provided between the bottom surface of the transmission sleeve 13 and the fixed housing 11 . The support member 16 is an annular structure, which can provide support force for the transmission sleeve 13 and provide a support basis for the circumferential rotation of the transmission sleeve 13 .

[0117] The above description is only a preferred implementation mode of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A drilling optical cable retracting and anchoring device, characterized in that: It includes a pay-off frame and an anchoring mechanism, and the anchoring mechanism includes: An installation sleeve, fixedly arranged at one end of the pay-off frame; The connecting seat is sleeved on the outer peripheral side of the installation sleeve and can slide along the axial direction of the installation sleeve; Multiple rib assemblies are evenly distributed on the outer circumference of the installation sleeve, one end of the rib assembly is hinged to the pay-off frame, and the other end is hinged to the connecting seat, and the rib assembly has radial deformation capability to adapt to the change of the inner diameter of the drill pipe; The wireless control driving component is arranged in the installation sleeve and is used to drive the connecting seat to slide axially to adjust the radial opening angle of the umbrella rib component so that the umbrella rib component abuts against the inner wall of the drill pipe to achieve anchoring.

2. The optical cable retracting and anchoring device for drilling according to claim 1, characterized in that: The mounting sleeve comprises a coaxially connected anchoring section and a driving section, one end of the anchoring section is fixedly connected to one end of the pay-off frame, and the other end of the anchoring section is fixedly connected to the driving section, the outer diameter of the anchoring section is smaller than the outer diameter of the driving section, the connecting seat sliding sleeve is arranged on the anchoring section, and when the umbrella rib assembly is in a fully retracted state, its maximum radial envelope diameter does not exceed the outer diameter of the pay-off frame, and the wireless control driving assembly is arranged in the driving section.

3. The optical cable retracting and anchoring device for drilling according to claim 2, characterized in that: The umbrella rib assembly includes a first rib rod, a second rib rod and an anchor, the first rib rod and the second rib rod are hingedly connected to the anchor respectively, one end of the first rib rod away from the anchor is hingedly connected to the connecting seat, and one end of the second rib rod away from the anchor is hingedly connected to the pay-off frame, and the sum of the projection length of the umbrella rib assembly along the axial direction of the anchor section and the axial length of the connecting seat in a fully retracted state is less than the axial length of the anchor section.

4. The optical cable retracting and anchoring device for drilling as claimed in claim 2, characterized in that: The driving section is provided with an installation cavity for accommodating a wireless control driving assembly, wherein the wireless control driving assembly includes a wireless control module, a battery and a plurality of linear modules, and the linear modules include a driving motor, a lead screw, a nut seat and a driving rod; The screw rod is rotatably arranged in the installation cavity along the axial direction of the driving section, and the output shaft of the driving motor is fixedly connected to one end of the screw rod; The nut seat is threadedly connected to the lead screw, one end of the driving rod is fixedly connected to the nut seat, and the other end movably passes through the outside of the driving section and is fixedly connected to the connecting seat; The wireless control module, the battery and the drive motor are electrically connected.

5. The optical cable retracting and anchoring device for drilling as claimed in claim 4, characterized in that: The driving section includes a fixed tube body, an inner tube body and an outer tube body; The fixed tube body and the end of the anchoring section away from the line-releasing member are coaxially fixedly connected, the inner tube body is coaxially fixedly arranged on the inner wall of the end of the fixed tube body away from the anchoring section, and the outer tube body is coaxially fixedly arranged on the outer wall of the end of the fixed tube body away from the anchoring section; The installation cavity comprises a first installation cavity and a second installation cavity. The first installation cavity is formed by enclosing the inner tube body and the outer tube body, and the second installation cavity is defined in the axial direction of the inner wall of the fixed tube body. A mounting bracket is arranged in the first mounting cavity, and the linear module and the battery are evenly arranged in the mounting bracket; One end of the driving rod is fixedly connected to the nut seat, and the other end movably passes through the second installation cavity and is fixedly connected to the connecting seat, and the driving rod and the second installation cavity are dynamically sealed.

6. The optical cable retracting and anchoring device for drilling according to claim 1, characterized in that: It also includes a cable-releasing assembly, which includes a cable-releasing rod and an optical cable. The outer peripheral wall of the cable-releasing rod is provided with a winding groove with a spiral structure. The optical cable is wound in sections in the winding groove along the axial direction of the cable-releasing rod. Each section is wound in several layers, and each section is arranged at intervals. The pay-off frame includes a fixed housing, a rotation limiting mechanism, a transmission sleeve and a trigger control mechanism; The transmission sleeve is coaxially sleeved on the inner side of the fixed housing, and the end of the optical cable not wound on the cable release rod is rotatably inserted into the transmission sleeve. The side wall of the transmission sleeve is provided with a guide unit spirally matched with the winding groove; The rotation limiting mechanism is arranged between the fixed shell and the transmission sleeve, and the trigger control mechanism is arranged on the optical cable release path at the top of the fixed shell, which is used to respond to the triggering or disengagement of the optical cable and correspondingly drive the rotation limiting mechanism to release or limit the circumferential rotation of the transmission sleeve relative to the fixed shell.

7. The optical cable retracting and anchoring device for drilling according to claim 6, characterized in that: The rotation limiting mechanism includes a locking tooth and a locking piece. An annular step is provided on the outer peripheral side of the upper end of the transmission sleeve. The locking teeth are distributed on the outer peripheral wall of the annular step. At least two locking pieces are provided, which are evenly arranged on the annular step and connected to the driving assembly. A matching tooth meshing with the locking tooth is provided on the inner side of the locking piece. The trigger control mechanism is used to drive the locking piece to move up and down along the axial direction of the transmission sleeve.

8. The optical cable retracting and anchoring device for drilling as claimed in claim 7, characterized in that: The trigger control mechanism includes a trigger plate, an elastic member and a transmission connecting rod. The trigger plate is an annular structure, which is coaxially located on the top surface of the fixed shell. One end of the transmission connecting rod is fixedly connected to the trigger plate, and the other end vertically moves through the fixed shell and is fixedly connected to the locking member. The elastic member is sleeved on the transmission connecting rod, one end of which is abutted against the trigger plate, and the other end is abutted against the top surface of the fixed shell.

9. The optical cable retracting and anchoring device for drilling according to claim 6, characterized in that: The side wall of the transmission sleeve is provided with a plurality of guide units at equal intervals along the circumferential direction, each guide unit comprises a plurality of rolling bodies arranged along a spiral direction, and the spiral direction of the plurality of guide units is consistent with the spiral direction of the winding groove.

10. The optical cable retracting and anchoring device for drilling according to claim 1 or 6, characterized in that: The pay-off rack also includes a plurality of guide wheel groups, which are arranged in a spiral pattern along the axis of the fixed shell. The guide wheel groups include a pair of guide wheels that rotate relative to each other. The axis of the guide wheels is perpendicular to the axis of the fixed shell, and an optical cable channel is formed between the two guide wheels.

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