Horse collar for well logging and well logging device

Abstract

The utility model discloses a logging is with horse collar and logging device, this horse collar includes the casing, one end of casing is equipped with the cable connection subassembly for clamping logging cable, the cable connection subassembly includes the connecting sleeve, the chuck for clamping logging cable and the pressure sleeve subassembly for the stripping layer of clamping logging cable, the connecting sleeve is connected with casing, the chuck sets up in the side of connecting sleeve away from casing, the pressure sleeve subassembly sets up between chuck and casing.

Description

Technical Field

[0001] This utility model relates to the field of well logging equipment technology, and in particular to a well logging bridle and well logging device. Background Technology

[0002] A logging bridle is a cable connector used to connect logging cables and logging instruments. It is a type of connector and an important component of logging equipment. Typically, the two ends of the bridle are connected to the logging cable and the logging instrument, respectively. Some existing bridles also use logging fiber optic cables. The logging cable / fiber optic cable is connected to the bridle housing, which only secures the cable / fiber optic cable. However, during prolonged use, factors such as vibration and impact can easily cause the logging cable / fiber optic cable to loosen, or even detach, posing a serious safety hazard. Therefore, there is an urgent need for a logging bridle and logging device to solve these problems. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a logging bridle, comprising a housing. One end of the housing is provided with a cable connection assembly for clamping logging cables. The cable connection assembly includes a connecting sleeve, a clamp for holding the logging cables, and a pressure sleeve assembly for holding the stripping layer of the logging cables. The connecting sleeve is connected to the housing, the clamp is disposed on the side of the connecting sleeve away from the housing, and the pressure sleeve assembly is disposed between the clamp and the housing.

[0004] Furthermore, the cable connection assembly also includes a transition sleeve and a locking sleeve. The connecting sleeve and the locking sleeve are respectively disposed at both ends of the transition sleeve. A first receiving cavity is formed between the locking sleeve and the transition sleeve. The clamp is disposed in the first receiving cavity. A second receiving cavity is formed between the connecting sleeve and the transition sleeve. The pressure sleeve assembly is disposed in the second receiving cavity.

[0005] Furthermore, the compression sleeve assembly includes a first compression sleeve, and the end of the transition sleeve facing the second accommodating cavity is provided with a first insertion portion. The first compression sleeve is sleeved on the first insertion portion for clamping the stripping layer of the logging cable.

[0006] Furthermore, the compression sleeve assembly also includes a second compression sleeve, and the end of the first compression sleeve away from the transition sleeve is provided with a second insertion portion. The second compression sleeve is sleeved on the second insertion portion for clamping the stripping layer of the logging cable, and the second compression sleeve abuts against the connecting sleeve.

[0007] Furthermore, the clamp is provided with a cable passage hole, one end of the clamp abuts against the locking sleeve and the other end is provided with a tapered clamping part, the end of the transition sleeve facing the first accommodating cavity is provided with a tapered cavity, the tapered clamping part extends into the tapered cavity and abuts against the inner wall of the tapered cavity so that the tapered clamping part retracts toward the cable passage hole.

[0008] Furthermore, the housing is also provided with a transition sealing assembly for sealing the connection between the first and second sheathing layers of the logging cable.

[0009] Furthermore, the adapter sealing assembly includes a sealing sleeve, a support sleeve, and a nut. The sealing sleeve has a through hole for inserting a first covering layer. The sealing sleeve has a first end connected to the support sleeve and a second end for connecting to a second covering layer. The sealing sleeve and the support sleeve enclose a third receiving cavity. A sealing unit is provided in the third receiving cavity. The nut is located at the end of the support sleeve away from the sealing sleeve.

[0010] Furthermore, a counterweight unit is provided at the end of the housing away from the cable connection assembly.

[0011] On the other hand, this utility model also provides a logging device, including a bridle and a logging cable. The logging cable is connected to the bridle, and the bridle is the logging bridle described above. The logging cable passes through the cable connection assembly and extends into the housing. The logging cable is clamped on the clamp. One end of the stripping layer of the logging cable is detached from the logging cable and clamped on the pressure sleeve assembly.

[0012] Furthermore, it also includes a fiber optic pressure gauge, which is housed inside the housing, and the connection terminal of the fiber optic pressure gauge is connected to the logging cable via an optical cable splice tube.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0014] 1) The logging bridle provided by this utility model has a logging cable connected to the housing through a cable connection component. The clamp of the cable connection component can clamp the logging cable, and the pressure sleeve component can press the stripped layer of the logging cable. Through the double clamping action of the clamp and the pressure sleeve component, the connection between the bridle and the logging cable is ensured to be firm, and the load is stable during the well running process and use, effectively preventing the connection from loosening and improving the safety of downhole operations.

[0015] 2) The logging bridle provided by this utility model transfers and seals the covering layer of the logging cable through the transfer sealing assembly. Through multiple sealing methods such as sealing sleeve, sealing unit, and sealing ring, the high-pressure sealing of the transfer sealing assembly is achieved, which effectively prevents leakage of high-pressure fluid downhole and enhances the working reliability of the bridle in high-pressure environment.

[0016] 3) The logging device provided by this utility model has a fiber optic pressure gauge that is directly connected to the logging cable through an optical cable splice tube, which realizes efficient transmission of optical signals and accurate sensing of pressure parameters, avoids electrical signal interference, and improves the reliability and accuracy of downhole pressure monitoring. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of the logging bridle provided by this utility model;

[0019] Figure 2 A cross-sectional view of the well logging bridle provided by this utility model;

[0020] Figure 3 The well logging bridle provided by this utility model Figure 2 A schematic diagram of the cable connection assembly in Part A;

[0021] Figure 4 The well logging bridle provided by this utility model Figure 2 A schematic diagram of the B-section transition sealing assembly.

[0022] 10-Horse bridle; 11-Housing; 111-First sleeve; 112-Second sleeve; 113-Pressure guide hole; 12-Cable connection assembly; 121-Transition sleeve; 1211-First insertion part; 1212-Conical cavity; 122-Connecting sleeve; 123-Locking sleeve; 124-Clamp; 125-First pressure sleeve; 1251-Second insertion part; 126-Second pressure sleeve; 13-Counterweight unit; 14-Transfer sealing assembly; 141-Sealing sleeve; 142-Support sleeve; 143-Nut; 144-First ferrule; 145-Second ferrule; 146-First sealing ring; 147-Second sealing ring; 148-Limiting sleeve; 149-Protective sleeve;

[0023] 20 - Logging fiber optic cable; 21 - First layer steel wire; 22 - Second layer steel wire; 23 - First sheathing layer; 24 - Second sheathing layer

[0024] 30 - Fiber optic pressure gauge; 31 - Connecting optical cable;

[0025] 40 - Optical fiber splice tube. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. In the accompanying drawings, the dimensions and relative dimensions of certain parts may be enlarged for clarity.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "connected" should be interpreted broadly. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] In the description of this utility model, the terms "upper", "lower", "left", "right", "front", "back", "center", "horizontal", "vertical", "top", "bottom", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, in the description of this utility model, the terms "first" and "second" are used merely for descriptive distinction and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Additionally, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0030] Example 1

[0031] As per the instruction manual Figure 1-4 As shown, this utility model provides a logging bridle, including a housing 11. One end of the housing 11 is provided with a cable connection assembly 12 for clamping logging cables. The cable connection assembly 12 includes a connecting sleeve 122, a clamp 124 for clamping logging cables, and a pressure sleeve assembly for clamping the stripping layer of logging cables. The connecting sleeve 122 is connected to the housing 11. The clamp 124 is disposed on the side of the connecting sleeve 122 away from the housing 11. The pressure sleeve assembly is disposed between the clamp 124 and the housing 11.

[0032] Preferably, the logging cable can be a logging cable or a logging optical cable 20. The logging bridle needs to be inserted into the well for operation. The bridle is used to connect the logging cable and the logging instrument. In this application, the logging cable is a logging optical cable 20, and the logging instrument is a fiber optic pressure gauge. The assembly forms a fully optical bridle, which is free from electrical signal interference, requires no additional power supply, and is unaffected by signal transmission. The housing 11, the cable connection assembly 12, and the adapter sealing assembly are all made of high-temperature and corrosion-resistant materials. The overall structure is adapted to the extreme working conditions of high temperature, high pressure, and strong corrosion in deep wells and ultra-deep wells, ensuring long-term stable working performance.

[0033] In an optimized implementation, the cable connection assembly 12 further includes a transition sleeve 121 and a locking sleeve 123. The connecting sleeve 122 and the locking sleeve 123 are respectively disposed at both ends of the transition sleeve 121. A first accommodating cavity is formed between the locking sleeve 123 and the transition sleeve 121. A clamp 124 for clamping the logging optical cable 20 is provided in the first accommodating cavity. A second accommodating cavity is formed between the connecting sleeve 122 and the transition sleeve 121. A pressure sleeve assembly for clamping the stripping layer of the logging optical cable 20 is provided in the second accommodating cavity.

[0034] Optimized implementation methods, as shown in the appendix to the instruction manual. Figure 3 As shown, the compression sleeve assembly includes a first compression sleeve 125. The transition sleeve 121 has a first insertion portion 1211 at one end facing the second accommodating cavity. The first compression sleeve 125 is sleeved on the first insertion portion 1211 to clamp the stripping layer of the logging fiber optic cable 20. Specifically, the end of the transition sleeve 121 connected to the connecting sleeve 122 is stepped, including a large-diameter section and a small-diameter section. The end of the connecting sleeve 122 facing the transition sleeve 121 has a groove. The small-diameter section and the large-diameter section of the transition sleeve 121 are inserted into the groove, with the large-diameter section connected to the groove. The small-diameter section is the first insertion portion 1211. After the stripping layer of the logging fiber optic cable 20 is folded over and pressed between the first compression sleeve 125 and the first insertion portion 1211, the connection reliability between the logging fiber optic cable 20 and the housing 11 can be further improved.

[0035] Specifically, the optical cable includes bare optical fibers and a cladding layer disposed on the outside of the bare optical fibers. In this embodiment, the logging optical cable 20 is preferably a steel wire optical cable, and a first cladding layer 23 is provided on the outside of the bare optical fibers. A first layer of steel wires 21 and a second layer of steel wires 22 are arranged sequentially from the outside to the inside of the first cladding layer 23. The first cladding layer is a first steel pipe.

[0036] Preferably, the compression sleeve assembly includes at least one compression sleeve. When a compression sleeve is provided, the compression sleeve is the first compression sleeve 125. When the logging cable passes through the cable connection assembly 12, the logging optical cable 20 is clamped by the clamp 124, and the first layer of steel wire 21 is partially peeled off. The first layer of steel wire 21 is partially separated from the covering layer. The first layer of steel wire 21 is the peeling layer. After being folded, it is pressed between the first compression sleeve 125 and the first insertion part 1211 of the transition sleeve 121.

[0037] In an optimized implementation, the pressure sleeve assembly includes two pressure sleeves, referred to as the first pressure sleeve 125 and the second pressure sleeve 126. The first pressure sleeve 125 has a second insertion portion 1251 at its end furthest from the transition sleeve 121. The second pressure sleeve 126 is sleeved on the second insertion portion 1251 to clamp the stripped layer of the logging fiber optic cable 20. The second pressure sleeve 126 abuts against the connecting sleeve 122. Partially peeling off the second layer of steel wire 22 and flipping and pressing the peeled portion between the second pressure sleeve 126 and the second insertion portion 1251 of the first pressure sleeve 125 can further improve the connection reliability between the logging fiber optic cable 20 and the housing 11. The peeled portion of the second layer of steel wire 22 is the stripped layer clamped between the second pressure sleeve 126 and the first pressure sleeve 125.

[0038] In an optimized implementation, the connecting sleeve 122 is threadedly connected to the large-diameter section of the transition sleeve 121. Through the screwing in of the thread, the second pressure sleeve 126 and the first pressure sleeve 125 are sequentially pressed against the transition sleeve 121, thereby compressing the second layer of steel wire 22 and the first layer of steel wire 21. The connection method is simple and ensures that the pressure sleeve locks the steel wires. After the logging optical cable 20 is clamped by the clamp 124, part of the steel wire layer is stripped and the stripped layer is clamped onto the pressure sleeve assembly. The first steel pipe continues to extend into the housing 11.

[0039] Preferably, the connecting sleeve 122 is threadedly connected to the housing 11, the connecting sleeve 122 is inserted into the housing 11 and has an external thread, and the end of the housing 11 has an internal thread that matches the external thread of the connecting sleeve 122.

[0040] In an optimized implementation, the locking sleeve 123 has a groove at one end facing the transition sleeve 121. The transition sleeve 121 extends into the groove and connects to the locking sleeve 123. The clamp 124 has a fiber optic cable insertion hole. One end of the clamp 124 abuts against the locking sleeve 123, and the other end has a conical clamping part. The conical clamping part includes a plurality of conical pieces spaced apart circumferentially along the fiber optic cable insertion hole. Each conical piece can contract toward the fiber optic cable insertion hole under external force to clamp the logging fiber optic cable 20. The transition sleeve 121 has a conical cavity 1212 at one end facing the first accommodating cavity. The conical clamping part extends into the conical cavity 1212 and abuts against the inner wall of the conical cavity so that the conical clamping part contracts toward the fiber optic cable insertion hole. Specifically, without external force, the conical clamping part is fitted with the logging optical cable 20 with a clearance, the clamp 124 is inserted into the conical cavity 1212 of the transition sleeve 121, the conical clamping part abuts against the inner wall of the conical cavity 1212, and the conical clamping part gradually contracts and clamps the logging optical cable 20.

[0041] Preferably, the locking sleeve 123 is threadedly connected to the transition sleeve 121. Through the screwing in of the thread, the locking sleeve 123 pushes the chuck 124 to move gradually toward the transition sleeve 121 until the logging fiber optic cable 20 is clamped. The threaded connection makes assembly convenient, and the movement of the chuck 124 is continuous, which can meet the clamping requirements of logging fiber optic cables 20 of different sizes.

[0042] The cable connection assembly 12 securely mechanically connects the logging cable to the bridle through the dual clamping action of the clamp 124 and the pressure sleeve assembly, ensuring the overall stability of the bridle and the reliable connection during the well running process, preventing detachment or loosening, and ensuring the safe operation of logging.

[0043] Preferably, the housing 11 includes a first sleeve 111 and a second sleeve 112, with the first sleeve 111 and the second sleeve 112 threadedly connected. The cable connection assembly 12 is mounted on the second sleeve 112 and extends downhole from the end of the first sleeve 111. The first sleeve 111 has a mounting position for installing a fiber optic pressure gauge 30. In use, the steel pipe of the logging fiber optic cable 20 passes sequentially through the cable connection assembly 12 and the second sleeve 112 to connect with the fiber optic pressure gauge 30. The first sleeve 111 also has a pressure guiding hole 113, which corresponds to the fiber optic pressure gauge 30. External downhole pressure is transmitted to the fiber optic pressure gauge 30 through the pressure guiding hole 113, thereby realizing the sensing and monitoring of pressure parameters.

[0044] Preferably, the first sleeve 111 is provided with a threaded hole for installing the fiber optic pressure gauge 30.

[0045] In an optimized implementation, a counterweight unit 13 is provided at the end of the first sleeve 111 away from the cable connection assembly 12, which can provide weight for the horse bridle and facilitate the smooth lowering of the horse bridle into the well.

[0046] In this embodiment, the size of the steel pipe configured for the connecting optical cable 31 of the fiber optic pressure gauge 30 is different from the size of the steel pipe of the logging optical cable 20. The optical fiber of the fiber optic pressure gauge 30 and the optical fiber of the logging optical cable 20 need to be fused together in the optical cable splice tube 40 to realize the connection between the fiber optic pressure gauge 30 and the logging optical cable 20. The first sleeve 111 is provided with an installation position for installing the optical cable splice tube 40.

[0047] Specifically, the first sheath 23 of the logging optical cable 20 is a 2.45mm steel pipe, the steel pipe connecting the optical cable 31 is a 6.35mm steel pipe, and both ends of the optical cable splice tube 40 are adapted to 6.35mm steel pipes. Therefore, the first sheath 23 of the logging optical cable 20 needs to be converted to a 6.35mm steel pipe, referred to as the second sheath 24. The second sheath 24 and the steel pipe connecting the optical cable 31 are respectively sealed and connected to both ends of the fiber optic continuous tube 40. Each optical fiber is fused within the fiber optic continuous tube 40 to achieve the connection between the fiber optic pressure gauge 30 and the logging optical cable 20.

[0048] In some embodiments, each steel tube and the fiber optic continuous tube 40 can be reliably connected using standard Swagelok ferrules. Swagelok ferrules are readily available and will not be described in detail here. The 2.45mm steel tube inside the optical cable is converted to a 6.35mm steel tube to match the specifications of the fiber optic pressure gauge steel tube. Connection via standard Swagelok ferrules ensures strong compatibility, convenient connection, and improves system integration and interchangeability.

[0049] Optimized implementation methods, as shown in the appendix to the instruction manual. Figure 4 As shown, the housing 11 is also provided with a transition sealing assembly 14 for sealing the connection between the first sheathing layer 23 and the second sheathing layer 24 of the logging optical cable to prevent leakage.

[0050] In an optimized implementation, the adapter sealing assembly 14 includes a sealing sleeve 141, a support sleeve 142, and a nut 143. Each of the sealing sleeve 141, support sleeve 142, and nut 143 has a through hole for inserting the first covering layer 23. The sealing sleeve 141 has a first end connected to the support sleeve 142 and a second end for connecting to the second covering layer 24. The second covering layer 24 is a steel pipe, inserted into the second end and laser-welded to the sealing sleeve 141, forming a single unit. The sealing sleeve 141 and the support sleeve 142 enclose a third accommodating cavity, within which a sealing unit is provided. The nut 143 is located at the end of the support sleeve 142 furthest from the sealing sleeve 141. The sealing unit creates a seal between the first covering layer 23 and the sealing sleeve 141, preventing leakage.

[0051] Specifically, in actual use, the first covering layer 23 passes sequentially through the nut 143, the support sleeve 142, the sealing unit, and the sealing sleeve 141 until it mates with the second covering layer 24. The sealing unit includes a first retaining sleeve 144 and a second retaining sleeve 145. The first retaining sleeve 144 abuts against the sealing sleeve 141, and the second retaining sleeve 145 is disposed between the first retaining sleeve 144 and the support sleeve 142, abutting against the support sleeve 142.

[0052] Preferably, the support sleeve 142 is partially sleeved on the sealing sleeve 141 and the two are threaded together. By screwing in the thread, the first ferrule 144 and the second ferrule 145 can be pressed together to achieve the sealing of the first covering layer 23.

[0053] In some embodiments, the sealing sleeve 141 has a tapered cavity at one end facing the third accommodating cavity, and the first ferrule 144 has a tapered portion at one end facing the sealing sleeve 141, the tapered portion being inserted into the tapered cavity and abutting against the inner wall of the tapered cavity. The first ferrule 144 also has a tapered cavity at one end facing the second ferrule 145, and the second ferrule 145 has a tapered portion at one end facing the first ferrule 144, the tapered portion being inserted into the tapered cavity and abutting against the inner wall of the tapered cavity. The tapered cavity and tapered portion improve the sealing performance of the ferrules.

[0054] In an optimized implementation, sealing rings are respectively provided at both ends of the support sleeve 142, and the nut 143 is threadedly connected to the support sleeve 142. A sealing groove is provided at the end of the support sleeve 142 facing the nut 143, and a first sealing ring 146 is provided within the sealing groove, pressing the first covering layer 23. A sealing groove is provided at the end of the support sleeve 142 away from the nut 143, and a second sealing ring 147 is provided within the sealing groove, which is fitted onto the sealing sleeve 141. Primary sealing is achieved through the sealing unit, and secondary sealing is achieved through the first sealing ring 146 and the second sealing ring 147. Through multiple sealing methods, high-pressure sealing of the transition sealing assembly 14 is achieved, effectively preventing leakage of high-pressure fluids downhole and enhancing the operational reliability of the bridle under high-pressure environments.

[0055] In an optimized implementation, the adapter sealing assembly 14 further includes a limiting sleeve 148 for limiting the support sleeve 142. The limiting sleeve 148 is sleeved on the sealing sleeve 141 and abuts against the support sleeve 142.

[0056] In an optimized implementation, a protective sleeve 149 is provided on the support sleeve 142. The protective sleeve 149 is located at the end of the support sleeve 142 near the nut 143. After passing the pressure test, the protective sleeve 149 is installed to complete the assembly.

[0057] Example 2

[0058] This utility model also provides a logging device, including a bridle 10 and a logging cable. The logging cable is connected to the bridle 10. The bridle 10 is the logging bridle described in Embodiment 1. The logging cable is a logging cable or a logging optical cable 20. In this embodiment, the logging cable is a logging optical cable 20. The logging optical cable 20 passes through the cable connection assembly 12 and extends into the housing 11. The logging optical cable 20 is clamped on the clamp 124. After passing through the clamp, the steel wire layer of the logging optical cable is partially stripped. One end of the stripped layer of the logging optical cable 20 detaches from the logging optical cable 20 and is clamped on the pressure sleeve assembly.

[0059] The optimized implementation also includes a fiber optic pressure gauge 30, which is housed within a first sleeve 111. The first sleeve 111 also contains a fiber optic splice tube 40. One end of the connecting fiber optic cable 31 of the fiber optic pressure gauge 30 is connected to the fiber optic splice tube 40. The first sheathing layer 23 of the logging fiber optic cable 20 is transferred to a second sheathing layer 24 via a transfer sealing assembly 14. The second sheathing layer 24 is connected to the other end of the fiber optic splice tube 40. The optical fibers connecting the fiber optic cable and the logging cable are fused within the fiber optic splice tube 40. Furthermore, the fiber optic pressure gauge is directly connected to the logging cable through the fiber optic splice tube 40, achieving efficient transmission of optical signals and accurate sensing of pressure parameters, avoiding electrical signal interference, and improving the reliability and accuracy of downhole pressure monitoring.

[0060] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0061] Those skilled in the art will understand that this invention can be implemented in many other specific forms without departing from the spirit and scope of this invention. Although embodiments of this invention have been described, it should be understood that this invention is not limited to these embodiments, and those skilled in the art can make changes and modifications within the spirit and scope of this invention as defined in the appended claims.

Claims

1. A logging bridle, comprising a housing, characterized in that, One end of the housing is provided with a cable connection assembly for clamping logging cables. The cable connection assembly includes a connecting sleeve, a clamp for clamping logging cables, and a pressure sleeve assembly for clamping the stripping layer of logging cables. The connecting sleeve is connected to the housing, the clamp is disposed on the side of the connecting sleeve away from the housing, and the pressure sleeve assembly is disposed between the clamp and the housing.

2. The logging bridle according to claim 1, characterized in that, The cable connection assembly further includes a transition sleeve and a locking sleeve. The connecting sleeve and the locking sleeve are respectively disposed at both ends of the transition sleeve. A first receiving cavity is formed between the locking sleeve and the transition sleeve. The clamp is disposed in the first receiving cavity. A second receiving cavity is formed between the connecting sleeve and the transition sleeve. The pressure sleeve assembly is disposed in the second receiving cavity.

3. The logging bridle according to claim 2, characterized in that, The compression sleeve assembly includes a first compression sleeve, and the end of the transition sleeve facing the second accommodating cavity is provided with a first insertion portion. The first compression sleeve is sleeved on the first insertion portion for clamping the stripping layer of the logging cable.

4. The logging bridle according to claim 3, characterized in that, The pressure sleeve assembly further includes a second pressure sleeve. The end of the first pressure sleeve away from the transition sleeve is provided with a second insertion portion. The second pressure sleeve is sleeved on the second insertion portion for clamping the stripping layer of the logging cable. The second pressure sleeve abuts against the connecting sleeve.

5. The logging bridle according to claim 2, characterized in that, The clamp is provided with a cable through hole. One end of the clamp abuts against the locking sleeve, and the other end is provided with a tapered clamping part. The end of the transition sleeve facing the first accommodating cavity is provided with a tapered cavity. The tapered clamping part extends into the tapered cavity and abuts against the inner wall of the tapered cavity so that the tapered clamping part retracts toward the cable through hole.

6. The logging bridle according to claim 1, characterized in that, The housing also includes a transition sealing assembly for sealing the connection between the first and second sheathing layers of the logging cable.

7. The logging bridle according to claim 6, characterized in that, The adapter sealing assembly includes a sealing sleeve, a support sleeve, and a nut. The sealing sleeve has a through hole for inserting a first covering layer. The sealing sleeve has a first end for connecting with the support sleeve and a second end for connecting with a second covering layer. The sealing sleeve and the support sleeve enclose a third receiving cavity. A sealing unit is provided in the third receiving cavity. The nut is located at the end of the support sleeve away from the sealing sleeve.

8. The logging bridle according to claim 1, characterized in that, A counterweight unit is provided at the end of the housing away from the cable connection assembly.

9. A logging device, comprising a bridle and a logging cable, wherein the logging cable is connected to the bridle, characterized in that, The bridle is the logging bridle according to any one of claims 1-8, the logging cable passes through the cable connection assembly and extends into the housing, the logging cable is clamped on the clamp, and one end of the stripping layer of the logging cable detaches from the logging cable and is clamped on the pressure sleeve assembly.

10. The logging device according to claim 9, characterized in that, It also includes a fiber optic pressure gauge, which is housed inside the housing, and the connection terminal of the fiber optic pressure gauge is connected to the logging cable via an optical cable splice tube.

Images