Wet joint type drill pipe transmission logging torpedo bypass sub

Abstract

The utility model relates to a wet joint formula drill rod transmission well logging fish torpedo bypassing nipple belongs to the field of drilling tool transmission well logging supporting tool. Including: nipple main part, cable guide mechanism, cable fixed establishment and lead through sealing mechanism, the upper part outer wall of nipple main part is fixed with the installation platform, the inner recess area is formed to the inner recess area of the middle part outer wall inwards recess, the lower part side wall is provided with the bypassing hole to the inclination, cable guide mechanism, cable fixed establishment and lead through sealing mechanism are installed in installation platform, the inner recess area and bypassing hole respectively, and form the cable channel for the cable passing, installation platform is located at the maximum outer diameter department of nipple main part. The utility model is favorable to solve the problem that the outer layer of cable is easy to break, and is easy to loosen in the working process.

Description

Technical Field

[0001] This utility model relates to the field of drilling tool transmission logging accessories, and in particular to a wet-joint type drill pipe transmission logging bypass short section for torpedoes. Background Technology

[0002] In drill string transfer logging operations, the torpedo blowout preventer bypass sub (hereinafter referred to as "bypass sub") is a key tool to ensure operational safety. Its main function is to enable the switching of the cable between the inside and outside of the drill pipe and to provide a reliable cable locking mechanism.

[0003] Traditional bypass subs have a significant drawback due to their structural characteristics: they are extremely prone to damaging logging cables. During operation, after the cable is led out from the cable clamp of the bypass sub, the angle formed with the drill pipe often causes the cable to be squeezed or even sheared within the narrow annulus between the drill string and the casing. This damage not only shortens the cable's lifespan but also brings safety risks such as power outages, signal interruptions, and even stuck drill bits during logging.

[0004] Chinese invention patent (patent number CN202110854973.1, publication date 2023.02.03) discloses a steel continuous tubing downhole cable bypass section, including an outer tube, which has a central channel, an eccentric channel and an oblique channel inside the outer tube. An upper and a lower flower ring are provided in the central channel. Both the upper and lower flower rings have a central hole for the cable to pass through and multiple oil passage holes around the central hole.

[0005] The patent features a slip connector connecting the upper and lower flower rings. The inner diameter of the slip connector is aligned with the center hole, allowing the cable to pass through. The slip connector contains a radially retractable slip with teeth on its inner wall. The slip is in a retracted state, and the teeth can grip the cable. Although the tooth design of the slip connector is simple, there is still a risk of damaging the cable. In field tests at the oil field, the cable insulation damage rate was still as high as 22%.

[0006] Chinese utility model patent (patent number CN215632821U, publication date 2022.01.25) discloses a torpedo bypass short section with a long neck rod, including a cylinder, with threaded structures for connecting to drill rods at the upper and lower ends of the cylinder, an eccentric inner hole inside, and a cable inlet hole on the side wall, with an included angle b between the cable inlet hole and the eccentric inner hole, and a diameter reduction area on the cylinder forming a diameter transition shoulder.

[0007] The bypass short section in this patent uses a long neck rod with a reduced diameter area on the cylinder. On the one hand, it forms a transition shoulder on the cylinder to cooperate with the wellhead hanger, which can realize the wellhead hanging operation of the bypass short section. On the other hand, it frees up the necessary positioning space for the drilling tool of the cable inlet hole, which can further reduce the design angle b between the cable inlet hole and the eccentric inner hole. However, after the angle optimization design, although the angle is smaller, the problem of cable loosening is still not solved.

[0008] Therefore, the bypass short sections in the existing technology generally have the problems of easy damage to the outer layer of the cable and easy loosening during operation. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a wet-joint type drill pipe transfer logging bypass short section for torpedoes, so as to solve the above-mentioned problem.

[0010] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A wet joint type drill pipe transmission logging bypass short section for torpedoes includes: a short section body, a cable guiding mechanism, a cable fixing mechanism, and a conductive sealing mechanism. The upper outer wall of the short section body is fixed with a mounting platform, the middle outer wall of which is recessed inward to form an inner concave area, and the lower side wall is inclined with a bypass hole. The cable guiding mechanism, the cable fixing mechanism, and the conductive sealing mechanism are respectively installed in the mounting platform, the inner concave area, and the bypass hole, forming a cable channel for the cable to pass through. The mounting platform is located at the maximum outer diameter of the short section body.

[0011] The beneficial effects of this utility model are as follows: The mounting platform is located at the maximum outer diameter of the sub body, and a cable guiding mechanism is installed on the mounting platform. This helps to confine the cable between the mounting platform and the cable guiding mechanism, providing guidance for the cable on the sub body while preventing the cable from being squeezed or even sheared in the narrow annulus between the drill string and the casing, thus extending the cable life and reducing the safety risks during logging. The cable fixing mechanism, in conjunction with the concave area, helps to fix the cable on the sub body, and the conductive sealing mechanism helps to fix the cable in the bypass hole while preventing drilling fluid in the sub body from flowing out of the bypass hole.

[0012] Based on the above technical solution, the present invention can be further improved as follows.

[0013] Furthermore, the cable guiding mechanism includes a guide plate and a plurality of first locking members. The outer wall of the mounting platform is provided with a guide plate mounting groove. The guide plate is adapted to and fixedly installed in the guide plate mounting groove through the first locking members. A first cable through hole is formed between the guide plate and the side wall of the short section body for the cable to pass through.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the guide plate mounting groove helps to provide space for the installation of the guide plate on the mounting platform, thereby ensuring that the mounting platform is located at the maximum outer diameter of the short section body.

[0015] Furthermore, the outer wall of the mounting platform is arc-shaped, and the guide plate is an arc-shaped shell structure. The outer wall of the guide plate and the outer wall of the mounting platform are circumferentially located on the outer diameter of the same cylinder.

[0016] The beneficial effect of adopting the above-mentioned further solution is that it helps to ensure that the mounting platform is still located at the maximum outer diameter of the short section body after the guide plate is installed on the mounting platform.

[0017] Furthermore, the upper outer wall of the short section body is circumferentially fixed with a plurality of outward protruding teeth, the mounting platform is located between two adjacent outward protruding teeth and is spaced apart from the two adjacent outward protruding teeth, and a flow groove is formed between the two adjacent outward protruding teeth and between the outward protruding teeth and the mounting platform. The outer walls of the outward protruding teeth, the outer walls of the mounting platform and the outer walls of the guide pressure plate are circumferentially located on the outer diameter of the same cylinder.

[0018] The beneficial effects of adopting the above-mentioned further scheme are: the flow groove helps to provide a channel for the discharge of fluid during drilling operations; the outer walls of the protruding teeth, the outer walls of the mounting platform, and the outer walls of the guide pressure plate are circumferentially located on the outer diameter of the same circle, which helps to avoid the cable, which is limited by the mounting platform and the guide pressure plate, being squeezed or even sheared in the narrow annulus between the drill string and the casing, thus extending the cable life and reducing the safety risks during the logging process.

[0019] Furthermore, a first cable guide groove is provided on the outer wall of the short section body near the mounting platform, and a second cable guide groove is provided on the inner side wall of the guide plate. The first cable guide groove and the second cable guide groove surround and form the first cable through hole for sleeved cable.

[0020] The beneficial effects of adopting the above-mentioned further scheme are: the first cable guide groove and the second cable guide groove help to protect the cable in the circumferential direction, avoid the cable being squeezed or even sheared in the annulus, extend the cable life, and reduce the safety risks in the logging process.

[0021] Furthermore, the guide plate is provided with a plurality of first locking holes at intervals. The first locking holes are through holes, and a plurality of first locking elements pass through the plurality of first locking holes one by one. One end of each element is fixedly connected to the short section body to fix the guide plate on the mounting platform, and the other end of each element is disposed in the first locking hole.

[0022] The beneficial effects of adopting the above-mentioned further solution are: on the one hand, the first locking hole helps to provide a channel for the first locking member to fix the guide plate on the mounting platform, and on the other hand, it also helps to cover the first locking member and ensure that the mounting platform is located at the maximum outer diameter of the short section body.

[0023] Furthermore, the cable fixing mechanism includes: a locking pressure plate, a locking outer tooth plate, and a locking inner tooth plate. The outer wall of the concave region is provided with a locking inner tooth plate mounting groove. The locking inner tooth plate is adapted and fixed in the locking inner tooth plate mounting groove by a third locking member. The inner wall of the locking pressure plate is provided with a locking outer tooth plate mounting groove. The locking outer tooth plate is adapted and fixed in the locking outer tooth plate mounting groove by the third locking member. The locking pressure plate is fixedly installed on the outer wall of the concave region by a plurality of second locking members, so that the locking outer tooth plate and the locking inner tooth plate are arranged opposite to each other and form a second cable through hole for clamping and fixing the cable.

[0024] The advantages of adopting the above-mentioned further solution are: on the one hand, the setting of the concave area helps to ensure that the mounting platform is located at the maximum outer diameter of the short section body; on the other hand, the locking pressure plate is fixedly installed on the outer wall of the concave area, which helps to clamp and fix the cable with the locking outer tooth plate and the locking inner tooth plate.

[0025] Furthermore, both the locking outer tooth plate and the locking inner tooth plate have arc-shaped grooves on their opposite sidewalls, and the outer wall of the cable is adapted to be crimped into the two arc-shaped grooves.

[0026] The beneficial effects of adopting the above-mentioned further solution are: the arc groove helps to avoid wear on the outer wall of the cable, and at the same time enhances the clamping and fixing force on the cable.

[0027] Furthermore, the locking plate is provided with a plurality of second locking holes at intervals. The second locking holes are through holes, and a plurality of second locking members pass through the plurality of second locking holes one by one. One end of each member is fixedly connected to the short section body to fix the locking plate on the concave area, and the other end of each member is disposed in the second locking hole.

[0028] The beneficial effects of adopting the above-mentioned further solution are: on the one hand, the second locking hole is conducive to providing a channel for the second locking member to fix the locking pressure plate on the concave area, and on the other hand, it is also conducive to covering the second locking member and ensuring that the mounting platform is located at the maximum outer diameter of the short section body.

[0029] Furthermore, the inner wall of the locking plate is provided with a plurality of locking plate positioning pins at intervals, and the outer wall of the concave area is provided with a plurality of positioning holes at intervals, and the plurality of locking plate positioning pins are inserted into the plurality of positioning holes one by one.

[0030] The beneficial effect of adopting the above-mentioned further solution is that the locking plate positioning pin and positioning hole help to pre-fix the locking plate on the outer wall of the concave area, which facilitates the subsequent fixing of the locking plate on the concave area by the second locking member.

[0031] Furthermore, the conductive sealing mechanism includes: a clamping screw ring, a sealing sleeve, and a guide ring. The clamping screw ring, the sealing sleeve, and the guide ring are sequentially abutted against and adapted to be installed in the bypass hole from top to bottom. The short section body has a drilled hole along its axial direction. The lower end of the bypass hole communicates with the drilled hole. The conductive sealing mechanism has a third cable through hole that extends along its axial direction.

[0032] The advantages of adopting the above-mentioned further solutions are: the guide ring helps to fix the cable in the bypass hole, the sealing sleeve helps to prevent the liquid inside the borehole from flowing out of the bypass hole, and the clamping screw ring helps to fix the sealing sleeve and guide ring in the bypass hole.

[0033] Furthermore, a limiting step is provided on the lower inner wall of the bypass hole, and the guide ring is a two-semi-circular ring structure, which are connected to each other by a fourth locking member. The guide ring is adapted to abut against the limiting step.

[0034] The beneficial effect of adopting the above-mentioned further solution is that the limiting step helps to prevent the guide ring from passing through the bypass hole and entering the borehole.

[0035] Furthermore, the sealing sleeve consists of two opposing semi-circular ring structures, with multiple annular deformation buffer grooves spaced along its axial direction on its inner wall, and its outer wall sealingly fitting with the inner wall of the bypass hole.

[0036] The beneficial effect of adopting the above-mentioned further solution is that the deformation buffer groove helps to deform the sealing sleeve when the tightening ring squeezes the sealing sleeve, releases pressure, and prevents the sealing sleeve from being crushed and affecting the sealing performance.

[0037] Furthermore, the upper inner wall of the bypass hole is provided with an internal thread, the clamping screw ring is two semi-circular ring structures and is connected to each other through a fifth locking member, and its outer wall is provided with an external thread. The clamping screw ring and the bypass hole are connected by a threaded engagement.

[0038] The beneficial effect of adopting the above-mentioned further solution is that the tightening screw ring and the bypass hole are connected by a threaded fit, which helps to fix the tightening screw ring in the bypass hole, thereby simultaneously fixing the sealing sleeve and the guide ring in the bypass hole. Attached Figure Description

[0039] Figure 1 A longitudinal sectional view of the overall structure provided for an embodiment of this utility model; Figure 2A side view of the overall structure provided for an embodiment of this utility model; Figure 3 For along Figure 1 A schematic diagram after being cut open along the AA direction; Figure 4 For along Figure 2 A schematic diagram after being cut open along the BB direction; Figure 5 A cross-sectional view of the guide plate provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of the structure of the locking pressure plate provided in an embodiment of the present utility model; Figure 7 An enlarged schematic diagram of the conductive sealing mechanism fixed in the bypass hole according to an embodiment of the present utility model; Figure 8 This is a schematic diagram of the structure of the sealing sleeve provided in an embodiment of the present utility model.

[0040] The attached diagram lists the components represented by each number as follows: 1. Short section body; 2. Cable guiding mechanism; 3. Cable fixing mechanism; 4. Conductive sealing mechanism; 5. Cable; 11. Outer protruding tooth; 12. Flow groove; 13. Mounting platform; 14. Inner recess area; 15. Drill hole; 16. Bypass hole; 21. Guide pressure plate; 22. First locking element; 31. Locking pressure plate; 32. Locking outer tooth plate; 33. Locking inner tooth plate; 34. Second locking element; 35. Third locking element; 41. Compression screw ring; 42. Sealing sleeve; 43. Guide ring; 131. Guide pressure plate mounting groove; 132. First cable guide groove; 141. Locking inner tooth plate mounting groove; 161. Limiting step; 211. Second cable guide groove; 212. First locking hole; 311. Second locking hole; 312. Locking outer tooth plate mounting groove; 313. Locking pressure plate positioning pin; 421. Deformation buffer groove. Detailed Implementation

[0041] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0042] like Figures 1 to 8As shown, this embodiment provides a wet-joint type drill pipe transfer logging bypass sub, including: sub body 1, cable guiding mechanism 2, cable fixing mechanism 3, and conductive sealing mechanism 4. The upper outer wall of the sub body 1 is fixed with a mounting platform 13, the middle outer wall is recessed inward to form an inner concave area 14, and the lower side wall is inclined with a bypass hole 16. The cable guiding mechanism 2, the cable fixing mechanism 3, and the conductive sealing mechanism 4 are respectively installed in the mounting platform 13, the inner concave area 14, and the bypass hole 16, forming a cable channel for the cable 5 to pass through. The mounting platform 13 is located at the maximum outer diameter of the sub body 1.

[0043] Regarding the background of this embodiment, it should be noted that: the short section body 1 is part of the drill bit, which is used in conjunction with the casing. The drill bit is located inside the casing, and there is an annular space between the drill bit and the casing. In the prior art, cables do not have a dedicated cable guiding mechanism 2 and cable fixing mechanism 3. They mostly rely on temporary and easily loosened fixing methods such as binding wire to fix the cable to the drill bit. During the operation of the drill bit, it will swing inside the casing. During the swing, the part of the cable that is bound cannot move due to the force and will rub against the inner wall of the casing, eventually causing the bound part of the cable to break. As for other parts of the cable that are not bound, they will move and slide in the annular space when subjected to force. Therefore, the probability of breakage is lower than that of the bound part of the cable. In this embodiment, the "cable channel" can be a completely enclosed channel (similar to a pipe), or it can be... Figure 1 A specific area within the space formed by the through hole and the recessed area 14 in the cable guiding mechanism 2, the cable fixing mechanism 3, and the conductive sealing mechanism 4 allows the cable 5 to pass through continuously.

[0044] The beneficial effects of this utility model are as follows: The mounting platform is located at the maximum outer diameter of the sub body, and a cable guiding mechanism is installed on the mounting platform. This helps to confine the cable between the mounting platform and the cable guiding mechanism, providing guidance for the cable on the sub body while preventing the cable from being squeezed or even sheared in the narrow annulus between the drill string and the casing, thus extending the cable life and reducing the safety risks during logging. The cable fixing mechanism, in conjunction with the concave area, helps to fix the cable on the sub body, and the conductive sealing mechanism helps to fix the cable in the bypass hole while preventing drilling fluid in the sub body from flowing out of the bypass hole.

[0045] Preferred, such as Figure 3As shown, the cable guiding mechanism 2 includes a guide plate 21 and a plurality of first locking members 22. The outer wall of the mounting platform 13 is provided with a guide plate mounting groove 131. The guide plate 21 is adapted to and fixedly installed in the guide plate mounting groove 131 through the first locking members 22. A first cable through hole for the cable 5 to pass through is formed between the guide plate 21 and the side wall of the short section body 1.

[0046] The advantages of adopting the above preferred solution are: the guide plate mounting groove helps to provide space for the installation of the guide plate on the mounting platform, thereby ensuring that the mounting platform is located at the maximum outer diameter of the short section body.

[0047] Preferred, such as Figure 3 As shown, the outer wall of the mounting platform 13 is arc-shaped, and the guide plate 21 is an arc-shaped shell structure. The outer wall of the guide plate 21 and the outer wall of the mounting platform 13 are circumferentially located on the outer diameter of the same cylinder.

[0048] The advantage of adopting the above-mentioned preferred solution is that it helps to ensure that the mounting platform is located at the maximum outer diameter of the short section body after the guide plate is installed on the mounting platform.

[0049] Preferred, such as Figure 3 As shown, the upper outer wall of the short section body 1 is circumferentially fixed with a plurality of outward protruding teeth 11. The mounting platform 13 is located between two adjacent outward protruding teeth 11 and is spaced apart from the two adjacent outward protruding teeth 11. A flow groove 12 is formed between two adjacent outward protruding teeth 11 and between the outward protruding teeth 11 and the mounting platform 13. The outer walls of the outward protruding teeth 11, the outer walls of the mounting platform 13 and the outer walls of the guide pressure plate 21 are circumferentially located on the outer diameter of the same cylinder.

[0050] The advantages of adopting the above-mentioned preferred scheme are: the flow groove helps to provide a channel for the discharge of fluid during drilling operations; the outer walls of the protruding teeth, the outer walls of the mounting platform, and the outer walls of the guide pressure plate are circumferentially located on the outer diameter of the same circle, which helps to avoid the cable, which is limited by the mounting platform and the guide pressure plate, being squeezed or even sheared in the narrow annulus between the drill string and the casing, thus extending the cable life and reducing the safety risks during the logging process.

[0051] Preferred, such as Figure 3 and Figure 5 As shown, the outer wall of the short section body 1 is provided with a first cable guide groove 132 near the mounting platform 13, and the inner side wall of the guide pressure plate 21 is provided with a second cable guide groove 211. The first cable guide groove 132 and the second cable guide groove 211 surround and form the first cable through hole for sleeved cable 5.

[0052] It should be noted that the outlines of the first cable guide groove 132 and the second cable guide groove 211 can be of any shape, as long as the cable 5 can be located within the space formed by the first cable guide groove 132 and the second cable guide groove 211. Figure 3 As shown, in this embodiment, the first cable guide groove 132 is a polygonal shape, and the second cable guide groove 211 is an arc shape; The “cable 5” in the above technical solution means that the cross-sectional area of ​​the space formed by the first cable guide groove 132 and the second cable guide groove 211 is larger than the cross-sectional area of ​​the cable 5, that is, the cable 5 is limited and protected in the circumferential direction, but the displacement of the cable 5 is not restricted in the axial direction.

[0053] The advantages of adopting the above-mentioned preferred scheme are: the first cable guide groove and the second cable guide groove help to protect the cable in the circumferential direction, avoid the cable being squeezed or even sheared in the annulus, extend the cable life, and reduce the safety risks in the logging process.

[0054] Preferred, such as Figure 3 and Figure 5 As shown, the guide plate 21 is provided with a plurality of first locking holes 212 at intervals. The first locking holes 212 are through holes. A plurality of first locking members 22 pass through the plurality of first locking holes 212 in a corresponding manner, and one end of the member is fixedly connected to the short section body 1 to fix the guide plate 21 on the mounting platform 13. The other end of the member is set in the first locking hole 212.

[0055] It should be noted that in this embodiment, the first locking element 22 is a screw or bolt.

[0056] The advantages of adopting the above-mentioned preferred solution are: the first locking hole is beneficial in providing a channel for the first locking member to fix the guide plate on the mounting platform, and also in covering the first locking member to ensure that the mounting platform is located at the maximum outer diameter of the short section body.

[0057] Preferred, such as Figure 4 and Figure 6As shown, the cable fixing mechanism 3 includes: a locking pressure plate 31, a locking outer tooth plate 32, and a locking inner tooth plate 33. The outer wall of the concave area 14 is provided with a locking inner tooth plate mounting groove 141. The locking inner tooth plate 33 is adapted and fixed in the locking inner tooth plate mounting groove 141 by a third locking member 35. The inner wall of the locking pressure plate 31 is provided with a locking outer tooth plate mounting groove 312. The locking outer tooth plate 32 is adapted and fixed in the locking outer tooth plate mounting groove 312 by the third locking member 35. The locking pressure plate 31 is fixedly installed on the outer wall of the concave area 14 by a plurality of second locking members 34, so that the locking outer tooth plate 32 and the locking inner tooth plate 33 are arranged opposite to each other and form a second cable through hole for clamping and fixing the cable 5.

[0058] It should be noted that in this embodiment, both the second locking member 34 and the third locking member 35 are screws or bolts.

[0059] The advantages of adopting the above-mentioned preferred solution are: on the one hand, the setting of the concave area helps to ensure that the mounting platform is located at the maximum outer diameter of the short section body; on the other hand, the locking pressure plate is fixedly installed on the outer wall of the concave area, which helps to clamp and fix the cable with the locking outer tooth plate and the locking inner tooth plate.

[0060] Preferred, such as Figure 4 and Figure 6 As shown, the locking outer tooth plate 32 and the locking inner tooth plate 33 are both provided with arc-shaped grooves on their opposite side walls, and the outer wall of the cable 5 is adapted to be crimped with the two arc-shaped grooves.

[0061] The advantages of adopting the above preferred solution are: the arc groove helps to avoid wear on the outer wall of the cable, and at the same time enhances the clamping and fixing force on the cable.

[0062] Preferred, such as Figure 4 and Figure 6 As shown, the locking plate 31 is provided with a plurality of second locking holes 311 at intervals. The second locking holes 311 are through holes. A plurality of second locking members 34 pass through the plurality of second locking holes 311 in a one-to-one correspondence, and one end of them is fixedly connected to the short section body 1 to fix the locking plate 31 on the concave area 14. The other end of them is set in the second locking hole 311.

[0063] The advantages of adopting the above-mentioned preferred solution are: on the one hand, the second locking hole is beneficial for providing a channel for the second locking member to fix the locking pressure plate on the concave area, and on the other hand, it is also beneficial for covering the second locking member and ensuring that the mounting platform is located at the maximum outer diameter of the short section body.

[0064] Preferred, such as Figure 6As shown, the inner wall of the locking plate 31 is provided with a plurality of locking plate positioning pins 313 at intervals, and the outer wall of the concave area 14 is provided with a plurality of positioning holes at intervals. The plurality of locking plate positioning pins 313 are inserted one-to-one into the plurality of positioning holes.

[0065] The advantages of adopting the above preferred solution are: the locking plate positioning pin and positioning hole help to pre-fix the locking plate on the outer wall of the concave area, which facilitates the subsequent fixing of the locking plate on the concave area by the second locking member.

[0066] Preferred, such as Figure 7 As shown, the conductive sealing mechanism 4 includes: a clamping screw ring 41, a sealing sleeve 42, and a guide ring 43. The clamping screw ring 41, the sealing sleeve 42, and the guide ring 43 are sequentially abutted and adapted to be installed in the bypass hole 16 from top to bottom. The short section body 1 is provided with a drilled hole 15 along its axial direction. The lower end of the bypass hole 16 communicates with the drilled hole 15. The conductive sealing mechanism 4 has a third cable through hole that extends along its axial direction.

[0067] It should be noted that in this embodiment, the drill hole 15 is a through hole axially disposed on the short section body 1; Cable 5 passes through the first cable through hole, the second cable through hole, and the third cable through hole from top to bottom.

[0068] The advantages of adopting the above preferred solution are: the guide ring helps to fix the cable in the bypass hole, the sealing sleeve helps to prevent the liquid inside the borehole from flowing out of the bypass hole, and the clamping screw ring helps to fix the sealing sleeve and guide ring in the bypass hole.

[0069] Preferred, such as Figure 7 As shown, a limiting step 161 is provided on the lower inner wall of the bypass hole 16, and the guide ring 43 is a two-semi-circular ring structure, which are connected to each other by a fourth locking member. The guide ring 43 is adapted to abut against the limiting step 161.

[0070] It should be noted that in this embodiment, the fourth locking element is a screw, bolt, or pin.

[0071] The advantages of adopting the above preferred solution are: the limiting step helps to prevent the guide ring from passing through the bypass hole and entering the borehole.

[0072] Preferred, such as Figure 8 As shown, the sealing sleeve 42 consists of two opposing semi-circular ring structures, with multiple annular deformation buffer grooves 421 spaced along its axial direction on its inner wall, and its outer wall sealingly engaging with the inner wall of the bypass hole 16.

[0073] It should be noted that in this embodiment, the outer wall of the sealing sleeve 42 abuts against and fits against the inner wall of the bypass hole 16 to achieve a seal.

[0074] The advantages of adopting the above preferred solution are: the deformation buffer groove helps to deform the sealing sleeve when the tightening ring squeezes the sealing sleeve, releases pressure, and prevents the sealing sleeve from being crushed and affecting the sealing performance.

[0075] Preferred, such as Figure 7 As shown, the upper inner wall of the bypass hole 16 is provided with an internal thread, the clamping screw ring 41 is a structure of two semi-circular rings, which are connected to each other by a fifth locking member, and its outer wall is provided with an external thread. The clamping screw ring 41 and the bypass hole 16 are connected by a threaded engagement.

[0076] It should be noted that in this embodiment, the ring structure formed by the relative connection of the two semi-circular ring structures through the fifth locking member (i.e., the clamping screw ring 4) has a complete thread structure on its outer wall, which is not affected by the disassembly and assembly of the two semi-circular ring structures. The fifth locking element is a screw, bolt, or pin.

[0077] The advantages of adopting the above preferred solution are: the threaded connection between the clamping screw ring and the bypass hole facilitates the fixing of the clamping screw ring in the bypass hole, thereby simultaneously fixing the sealing sleeve and the guide ring in the bypass hole.

[0078] The working process of this embodiment is described below: like Figures 1 to 8 As shown, first, the cable 5 connected to the torpedo head is inserted from the outside to the inside through the bypass hole 16 and into the drill hole 15. When the length of the cable 5 entering the drill hole 15 reaches the preset length, the two semi-circular guide rings 43 are fitted on the cable 5 and fixed relative to each other before being placed into the bypass hole 16 until they abut against the limiting step 161. Next, two semi-circular sealing sleeves 42 are placed on the cable 5 and inserted into the bypass hole 16 until they abut against the guide ring 43. Then, two semi-circular clamping screw rings 41 are placed on the cable 5 and fixed relative to each other before being inserted into the bypass hole 16, so that the clamping screw rings 41 and the bypass hole 16 are connected by threaded engagement until the clamping screw rings 41 press the sealing sleeves 42 tightly and cannot be tightened further. Then, along the axial direction of the concave area 14, the cable 5 is placed in the arc-shaped groove of the locking inner tooth plate 33. Then, the locking pressure plate 31 is fixed to the side wall of the concave area 14 by the cooperation of the locking pressure plate positioning pin 313 and the positioning hole. At the same time, the arc-shaped groove of the locking outer tooth plate 32 clamps the cable 5. Then, the locking pressure plate 31 is fixed to the side wall of the concave area 14 by the second locking member 34, so that the locking inner tooth plate 33 and the locking outer tooth plate 32 clamp and fix the cable 5. Finally, the cable 5 is placed in the first cable guide groove 132 along the axial direction of the concave area 14, and the guide pressure plate 21 is fitted into the guide pressure plate mounting groove 131. Then, the first locking member 22 is used to fix the guide pressure plate 21 on the mounting platform 13, so that the cable 5 is circumferentially located in the space formed by the first cable guide groove 132 and the second cable guide groove 211.

[0079] This embodiment has the following advantages: This device uses a guide plate to circumferentially limit the cable within the mounting platform, positioning the platform at the maximum outer diameter of the short section body. This optimizes the cable's routing in the annular section, improves the fit between the cable and the tool string, and effectively reduces the risk of cable movement and wear during tripping and tripping. Furthermore, it allows the cable and torpedo head to be smoothly routed through the bypass hole, solving the problems of low installation efficiency and the risk of compression, connection quality, and accuracy issues caused by positioning deviations when connecting torpedo joints after passing through logging cables on-site. This improves the installation efficiency of torpedo joints and ensures connection quality. Moreover, it employs an optimized locking and fixing method, using a specially designed cable fixing mechanism to replace the previous temporary and easily loosened fixing methods such as binding wires. The locking plate more firmly restrains the cable between the locking outer and inner jaw plates.

[0080] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0082] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0083] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0085] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A wet-joint type drill pipe transfer logging bypass short section for torpedoes, characterized in that, include: The short section body (1), cable guiding mechanism (2), cable fixing mechanism (3) and conductive sealing mechanism (4) are provided. The upper outer wall of the short section body (1) is fixed with a mounting platform (13), the middle outer wall is recessed inward to form an inner recess area (14), and the lower side wall is inclined with a bypass hole (16). The cable guiding mechanism (2), the cable fixing mechanism (3) and the conductive sealing mechanism (4) are respectively installed in the mounting platform (13), the inner recess area (14) and the bypass hole (16), forming a cable channel for the cable (5) to pass through. The mounting platform (13) is located at the maximum outer diameter of the short section body (1).

2. The wet-joint type drill pipe transfer logging bypass short section according to claim 1, characterized in that, The cable guiding mechanism (2) includes a guide plate (21) and a plurality of first locking elements (22). The outer wall of the mounting platform (13) is provided with a guide plate mounting groove (131). The guide plate (21) is adapted to and fixedly installed in the guide plate mounting groove (131) through the first locking elements (22). A first cable through hole for the cable (5) to pass through is formed between the guide plate (21) and the side wall of the short section body (1).

3. The wet-joint type drill pipe transfer logging bypass short section according to claim 2, characterized in that, The outer wall of the mounting platform (13) is arc-shaped, and the guide plate (21) is an arc-shaped shell structure. The outer wall of the guide plate (21) and the outer wall of the mounting platform (13) are circumferentially located on the outer diameter of the same cylinder.

4. The wet-joint type drill pipe transfer logging bypass short section according to claim 2, characterized in that, The upper outer wall of the short section body (1) is fixed with a plurality of protruding teeth (11) at intervals. The mounting platform (13) is located between two adjacent protruding teeth (11) and is spaced apart from the two adjacent protruding teeth (11). A flow groove (12) is formed between two adjacent protruding teeth (11) and between the protruding teeth (11) and the mounting platform (13). The outer walls of the protruding teeth (11), the outer walls of the mounting platform (13) and the outer walls of the guide plate (21) are circumferentially located on the outer diameter of the same cylinder.

5. The wet-joint type drill pipe transfer logging bypass short section according to claim 2, characterized in that, The outer wall of the short section body (1) near the mounting platform (13) is provided with a first cable guide groove (132), and the inner side wall of the guide pressure plate (21) is provided with a second cable guide groove (211). The first cable guide groove (132) and the second cable guide groove (211) surround and form the first cable through hole for sleeved cable (5).

6. The wet-joint type drill pipe transfer logging bypass short section according to claim 2, characterized in that, The guide plate (21) is provided with a plurality of first locking holes (212) at intervals. The first locking holes (212) are through holes. A plurality of first locking parts (22) pass through the plurality of first locking holes (212) one by one, and one end of them is fixedly connected to the short section body (1) to fix the guide plate (21) on the mounting platform (13). The other end of them is set in the first locking hole (212).

7. The wet-joint type drill pipe transfer logging bypass short section according to claim 1, characterized in that, The cable fixing mechanism (3) includes: a locking pressure plate (31), a locking outer tooth plate (32), and a locking inner tooth plate (33). The outer wall of the concave area (14) is provided with a locking inner tooth plate mounting groove (141). The locking inner tooth plate (33) is adapted and fixed in the locking inner tooth plate mounting groove (141) by a third locking member (35). The inner wall of the locking pressure plate (31) is provided with a locking outer tooth plate mounting groove (312). The locking outer tooth plate (32) is adapted and fixed in the locking outer tooth plate mounting groove (312) by the third locking member (35). The locking pressure plate (31) is fixedly installed on the outer wall of the concave area (14) by a plurality of second locking members (34), so that the locking outer tooth plate (32) and the locking inner tooth plate (33) are arranged opposite to each other and form a second cable through hole for clamping and fixing the cable (5).

8. The wet-joint type drill pipe transfer logging bypass short section according to claim 7, characterized in that, The locking outer tooth plate (32) and the locking inner tooth plate (33) are provided with arc-shaped grooves on opposite side walls, and the outer wall of the cable (5) is adapted to be crimped with the two arc-shaped grooves.

9. The wet-joint type drill pipe transfer logging bypass short section according to claim 7, characterized in that, The locking plate (31) is provided with a plurality of second locking holes (311) at intervals. The second locking holes (311) are through holes. A plurality of second locking parts (34) pass through the plurality of second locking holes (311) one by one, and one end of them is fixedly connected to the short section body (1) to fix the locking plate (31) on the concave area (14). The other end of them is set in the second locking hole (311).

10. The wet-joint type drill pipe transfer logging bypass short section according to claim 7, characterized in that, The inner wall of the locking plate (31) is provided with a plurality of locking plate positioning pins (313) spaced apart, and the outer wall of the concave area (14) is provided with a plurality of positioning holes spaced apart, and the plurality of locking plate positioning pins (313) are inserted one by one into the plurality of positioning holes.

11. The wet-joint type drill pipe transfer logging bypass short section according to claim 1, characterized in that, The conductive sealing mechanism (4) includes: a clamping screw ring (41), a sealing sleeve (42), and a guide ring (43). The clamping screw ring (41), the sealing sleeve (42), and the guide ring (43) are sequentially abutted against and adapted to be installed in the bypass hole (16) from top to bottom. The short section body (1) is provided with a drill hole (15) along its axial direction. The lower end of the bypass hole (16) is connected to the drill hole (15). The conductive sealing mechanism (4) has a third cable through hole that extends along its axial direction.

12. The wet-joint type drill pipe transfer logging bypass short section according to claim 11, characterized in that, The lower inner wall of the bypass hole (16) is provided with a limiting step (161). The guide ring (43) is a semi-circular ring structure and is connected to each other by a fourth locking member. The guide ring (43) is adapted to abut against the limiting step (161).

13. The wet-joint type drill pipe transfer logging bypass short section according to claim 11, characterized in that, The sealing sleeve (42) consists of two opposing semi-circular ring structures, with multiple annular deformation buffer grooves (421) spaced along its axial direction on its inner wall, and its outer wall sealingly engaging with the inner wall of the bypass hole (16).

14. The wet-joint type drill pipe transfer logging bypass short section according to claim 11, characterized in that, The upper inner wall of the bypass hole (16) is provided with an internal thread. The clamping screw ring (41) is a structure of two semi-circular rings, which are connected to each other by a fifth locking member. The outer wall of the screw ring is provided with an external thread. The clamping screw ring (41) and the bypass hole (16) are connected by a threaded engagement.

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