Tension headstall for well logging
By designing the cooling mechanism, barrier mechanism and inlet and outlet pipe fittings on the logging tension bridle, the thermal failure of the internal devices of the tension bridle in the high temperature environment of deep well logging is solved, and the constant control of the bridle temperature and the stability and accuracy of logging operations are achieved.
Patent Information
- Application Number
- CN202510555457.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-05-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In a high temperature environment for deep well logging, the tension horse bridle may easily lead to thermal failure of internal devices due to long-term thermal radiation and conduction, affecting the safety and continuity of logging operations.
A tension horse bridle for well logging is designed, equipped with a cooling mechanism, a barrier mechanism and inlet and outlet fittings. The cooling mechanism uses a spiral cooling runner to dissipate the heat from the bridle, and the barrier mechanism contacts the well wall through the barrier cylinder block to avoid heat transfer; the inlet and outlet pipe fittings form a double insulation layer through the middle barrier pipe and support plate to keep the heat insulated and improve the cooling efficiency.
Effectively maintain the working temperature of the tension bridle during underground operation, ensure the accuracy of well logging operations and the stable operation of the equipment, and avoid problems such as structure loosening, unstable clamping and interruption of electrical signals caused by thermal failure.
Smart Images
Figure CN120061803A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of petroleum well logging, in particular to a tension bridle for well logging. Background Art
[0002] The logging tension bridle is a mechanical and electrical composite connection device used to connect logging cables and downhole instruments in the process of energy exploration such as oil and natural gas. Its main function is to achieve tension transmission, electrical signal conduction and mechanical fixation between the cable and the instrument.
[0003] In deep or ultra-deep well logging operations, the underground environment usually has extreme conditions such as high temperature and high pressure, and the local area is even higher. Under such conditions, the tension bridle, as an important connection device between the cable and the instrument, is in the underground high temperature zone for a long time, and is subjected to continuous heat radiation and heat conduction. The bridle usually contains a variety of functional components, such as clamping structure, conductive contacts, elastic elements and signal sensors, etc. These components are mostly made of metal and heat-sensitive materials. High temperature will cause the elastic part to have a decrease in resilience, the conductive performance of the shrapnel to fluctuate, the sensitivity of the sensor element to decrease or even fail. In addition, the metal structure will be damaged after a long time. Thermal expansion and stress relaxation may also occur under the action of heat, resulting in an imbalance in the clamping force or changes in the internal clearance, which in turn may cause problems such as loosening of the bridle structure, unstable clamping, and interruption of electrical signals, thereby affecting the safety and continuity of logging operations. Since the downhole environment cannot achieve natural heat dissipation, heat continues to accumulate inside the bridle, which can easily form a heat accumulation effect, further aggravating the occurrence of the above-mentioned faults. Therefore, internal thermal failure caused by high temperature has become one of the key issues restricting the stable operation and reliable connection of the tension bridle, and its technical impact runs through multiple core links such as mechanical clamping, electrical signal transmission, and structural reliability. Summary of the invention
[0004] In view of the deficiencies in the prior art, the present invention provides a tension bridle for well logging, which solves the problem that the tension bridle is prone to thermal failure of internal components due to long-term exposure to heat radiation and conduction in a high-temperature environment of deep well logging.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tension bridle for well logging, comprising: a bridle, a cooling mechanism, the cooling mechanism is arranged on the outer wall of the bridle, the cooling mechanism is used to liquid-cool the bridle; a blocking mechanism, the blocking mechanism is arranged on the cooling mechanism, the blocking mechanism is used to prevent the cooling mechanism from touching the inner wall of the well; an inlet and outlet pipe fitting, the inlet and outlet pipe fitting is arranged on the cooling mechanism, the inlet and outlet pipe fitting is used to transport the cooling liquid in and out of the cooling mechanism and to keep the incoming cooling liquid warm.
[0006] Preferably, the cooling mechanism includes an insulating lightweight rod, one end of the insulating lightweight rod is fixedly connected to the outer wall of the horse head, and a sealing sleeve is fixedly connected to the other end of the insulating lightweight rod.
[0007] Preferably, a spiral cooling flow channel is fixedly connected to the outer wall of the horse head, an input end is fixedly connected to the top of the spiral cooling flow channel, and an output end is arranged at the bottom of the spiral cooling flow channel.
[0008] Preferably, the output end is fixedly connected with an annular member, there are two annular members, a connecting pipe is fixedly connected between the two annular members, and an outflow pipe is fixedly connected to the top of the top annular member.
[0009] Preferably, the blocking mechanism includes an inner annular flow channel, an inner annular flow channel is arranged on the inner wall of the annular member, a return spring is arranged on the inner wall of the annular member, one end of the return spring is fixedly connected to the inner wall of the annular member, the other end of the return spring is fixedly connected with a connecting end block, a blocking cylindrical block is fixedly connected to the outer wall of the connecting end block, a telescopic pipe is arranged on the outer wall of the connecting end block, one end of the telescopic pipe is fixedly connected to the outer wall of the connecting end block, and the other end of the telescopic pipe is fixedly connected with a sealing ring.
[0010] Preferably, the outer wall of the blocking cylindrical block is slidably connected to the inner wall of the annular member, and the outer wall of the sealing ring is fixedly connected to the inner wall of the annular member.
[0011] Preferably, there are four groups of the return spring, the connecting end block, the blocking cylindrical block, the telescopic pipe and the sealing ring. The four groups of the return spring, the connecting end block, the blocking cylindrical block, the telescopic pipe and the sealing ring are arranged on the inner wall of the annular member in a circumferential array, and balls are arranged on the blocking cylindrical block.
[0012] Preferably, the inlet and outlet pipe fittings include an input pipe, the input pipe is fixedly connected to the input end, an outer connecting sleeve is fixedly connected to the outer wall of the input pipe, a transfer pipe is fixedly connected to the bottom of the outer connecting sleeve, the transfer pipe is fixedly connected to the outflow pipe at the bottom, an output pipe is fixedly connected to the top of the outer connecting sleeve, a middle blocking pipe is fixedly connected to the inner wall of the outer connecting sleeve, and a support plate is fixedly connected to the inner wall of the outer connecting sleeve.
[0013] Preferably, through holes are arranged on the support plate for the passage of the coolant output.
[0014] Compared with the prior art, the present invention provides a tension horse head for logging, and has the following beneficial effects:
[0015] 1. For the tension swivel used in well logging, with the cooling mechanism set up, the external coolant is pumped in through the input pipe at the input end and then into the spiral cooling channel. During the downward flow in the spiral structure, it exchanges heat fully with the swivel, and simultaneously cools the coolant in the sealed space formed by the combined action of the sealing sleeve, annular part, and the swivel, improving the temperature stability of the coolant in the sealed space. It can effectively keep the working temperature of the tension swivel constant during downhole operations, ensuring the accuracy of well logging operations and the stable operation of the equipment.
[0016] 2. For the tension swivel used in well logging, with the blocking mechanism set up, the blocking cylindrical blocks on the upper and lower annular parts extend simultaneously under the action of the same coolant pressure and come into contact with the well wall, playing a role in isolation and buffering. It can effectively prevent excessive contact between the main part of the device and the inner wall of the well, avoid excessive heat transfer from the inner wall of the well to the device, further block heat, and prevent the device from overheating.
[0017] 3. For the tension swivel used in well logging, with the inlet and outlet pipe fittings set up, the middle blocking pipe is used to block the inner wall of the outer connection sleeve to form two independent spaces inside and outside. The external space is used to transmit the discharged coolant, and the internal space is filled with air for heat insulation, forming an effective heat insulation layer, reducing the heat exchange or interference between the input coolant and the output coolant. At the same time, the output coolant is also lower than the ambient temperature, playing a role in heat insulation for the input coolant. The dual blocking effect insulates the input coolant. Through this dual heat insulation design, not only is the heat loss of the coolant effectively avoided during the flow process, but also the coolant temperature can be maintained within the optimal working range, improving the cooling efficiency and system stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the sectional structural schematic diagram of the sealing sleeve of the present invention; Figure 3 is the structural schematic diagram of the connecting pipe of the present invention; Figure 4 is the structural schematic diagram of the cooling mechanism of the present invention; Figure 5 is the sectional structural schematic diagram of the annular part of the present invention; Figure 6 is the structural schematic diagram of the telescopic pipe of the present invention; Figure 7 is the structural schematic diagram of the outer connection sleeve of the present invention; Figure 8 is the sectional structural schematic diagram of the outer connection sleeve of the present invention.
[0019] In the figure: 1. Horse bridle; 2. Cooling mechanism; 21. Insulating light rod; 22. Sealing sleeve; 23. Spiral cooling flow channel; 24. Input end; 25. Output end; 26. Connecting pipe; 27. Outflow pipe; 3. Blocking mechanism; 31. Ring-shaped part; 32. Inner ring-shaped flow channel; 33. Return spring; 34. Connecting end block; 35. Blocking cylindrical block; 36. Telescopic pipe; 37. Sealing ring; 4. In-out pipe fitting; 41. Input pipe; 42. Outer connecting sleeve; 43. Adapter pipe; 44. Output pipe; 45. Middle blocking pipe; 46. Support plate; 47. Through hole. Detailed implementation manner
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0021] Please refer to Figures 1-8 , a tension horse bridle for well logging, comprising: a horse bridle 1, a cooling mechanism 2, the cooling mechanism 2 is arranged on the outer wall of the horse bridle 1, and the cooling mechanism 2 is used for liquid cooling and heat dissipation of the horse bridle 1; a blocking mechanism 3, the blocking mechanism 3 is arranged on the cooling mechanism 2, and the blocking mechanism 3 is used to prevent the cooling mechanism 2 from touching the inner wall of the well; an in-out pipe fitting 4, the in-out pipe fitting 4 is arranged on the cooling mechanism 2, and the in-out pipe fitting 4 is used for conveying the coolant entering and leaving the cooling mechanism 2 and keeping the entering coolant warm.
[0022] The cooling mechanism 2 includes an insulating lightweight rod 21, which is made of a high-temperature resistant insulating material and has excellent mechanical strength and heat insulation performance. One end of the insulating lightweight rod 21 is fixedly connected to the outer wall of the pony head 1 to provide structural support and electrical insulation protection. The other end of the insulating lightweight rod 21 is fixedly connected with a sealing sleeve 22, which is made of a flexible high-molecular high-temperature resistant sealing material and can adapt to the complex changes in the underground environment. The sealing sleeve 22, the annular part 31 and the pony head 1 jointly act to form a seal. A coolant is arranged in the sealing sleeve 22 and the annular part 31 to absorb heat, which can play a role in stabilizing the temperature, realize the temperature control of the pony head 1, and thus can play a role in stabilizing the temperature, prevent the performance of the tension pony head 1 from degrading due to sudden temperature changes, and improve the overall service life and the safety and reliability of the logging process. The outer wall of the pony head 1 is fixedly connected with a spiral cooling flow channel 23, which is made of metal or a high-temperature resistant heat-conducting material and is spirally wound around the outer surface of the pony head 1 to increase the contact area with the pony head 1, thereby improving the heat exchange efficiency. The top of the spiral cooling flow channel 23 is fixedly connected with an input end 24 for inputting the coolant, and the input end 24 is connected to an external coolant conveying device to realize continuous liquid supplement and heat exchange cycle. The bottom of the spiral cooling flow channel 23 is provided with an output end 25 for discharging the coolant after heat exchange to realize the circulating flow of the coolant. The output end 25 is fixedly connected with an annular part 31. There are two annular parts 31, and a connecting pipe 26 is fixedly connected between the two annular parts 31 to form a guiding flow path for the coolant, which is used to guide the coolant to flow from one annular part 31 to the other annular part 31 to form a stable and closed flow loop. The top of the top annular part 31 is fixedly connected with an outflow pipe 27. The coolant is input into the spiral cooling flow channel 23 through the input end 24, and fully exchanges heat with the pony head 1 during the downward flow in the spiral structure, and simultaneously cools the coolant in the sealed space formed by the joint action of the sealing sleeve 22, the annular part 31 and the pony head 1 to improve the temperature stability of the coolant in the sealed space. Then it flows out through the output end 25, the annular part 31, the connecting pipe 26 and the outflow pipe 27. The whole process constitutes a continuous circulating cooling system, which can effectively keep the working temperature of the tension pony head 1 constant during underground operation and ensure the logging operation accuracy and the stable operation of the equipment.
[0023] The blocking mechanism 3 includes an inner annular flow channel 32, which is an annular groove channel provided on the inner wall of the annular member 31. It is connected to the output end 25 and is used for the flow and distribution of the coolant, ensuring that the coolant can smoothly enter each functional part of the blocking mechanism 3. The inner annular flow channel 32 is provided on the inner wall of the annular member 31 and is used for the flow of the coolant. A return spring 33 is provided on the inner wall of the annular member 31. The return spring 33 is made of a highly elastic and corrosion-resistant metal material. One end of the return spring 33 is fixedly connected to the inner wall of the annular member 31, and the other end of the return spring 33 is fixedly connected to a connecting end block 34. A blocking cylindrical block 35 is fixedly connected to the outer wall of the connecting end block 34. A telescopic tube 36 is provided on the outer wall of the connecting end block 34. One end of the telescopic tube 36 is fixedly connected to the outer wall of the connecting end block 34, and the other end of the telescopic tube 36 is fixedly connected to a sealing ring 37. The output end 25 inputs the coolant into the inner annular flow channel 32, and then enters the telescopic tube 36 under the pressure of the coolant, squeezing the connecting end block 34, so that the connecting end block 34 drives the blocking cylindrical block 35 to extend. When the blocking cylindrical blocks 35 on the upper and lower annular members 31 both extend, it can prevent the main body part of the device from contacting the inner wall of the well too much, ensuring the stable suspension and measurement accuracy of the equipment. The outer wall of the blocking cylindrical block 35 is slidably connected to the inner wall of the annular member 31, and the outer wall of the sealing ring 37 is fixedly connected to the inner wall of the annular member 31. The sealing ring 37 is used to seal the gap between the inner annular flow channel 32 and the outside, preventing the coolant from leaking, and improving the system tightness and safety. Four sets of the return spring 33, the connecting end block 34, the blocking cylindrical block 35, the telescopic tube 36, and the sealing ring 37 are provided. The four sets of the return spring 33, the connecting end block 34, the blocking cylindrical block 35, the telescopic tube 36, and the sealing ring 37 are arranged in a circumferential array on the inner wall of the annular member 31. Ball bearings are provided on the blocking cylindrical block 35, which plays a role in reducing friction. The output end 25 inputs the coolant into the inner annular flow channel 32. After the coolant flows and is restricted and guided in the flow channel, it enters the inside of the telescopic tube 36. Under the pressure of the coolant, an axial thrust is generated, squeezing the connecting end block 34, so that the connecting end block 34 is pushed along the spring direction, and then drives the blocking cylindrical block 35 to extend, forming an elastically adjustable support structure. The blocking cylindrical blocks 35 on the upper and lower annular members 31 extend simultaneously under the action of the same coolant pressure and come into contact with the well wall, playing an isolation and buffering role, which can effectively prevent the main body part of the device from contacting the inner wall of the well too much, avoiding excessive heat transfer from the inner wall of the well to the device, further blocking the heat, and preventing the device from overheating.
[0024] The inlet and outlet pipe fitting 4 includes an input pipe 41, which is fixedly connected to the input end 24 and is used to stably input external coolant into the spiral cooling flow channel 23, ensuring that the coolant can effectively enter the system and complete the heat exchange and heat dissipation process. An outer connection sleeve 42 is fixedly connected to the outer wall of the input pipe 41. A transfer pipe 43 is fixedly connected to the bottom of the outer connection sleeve 42, and the bottom of the transfer pipe 43 is fixedly connected to the outflow pipe 27. An output pipe 44 is fixedly connected to the top of the outer connection sleeve 42, and the output pipe 44 is used to discharge the cooled coolant. The coolant is guided to the external recycling or discharge system through this pipeline, ensuring that the liquid flow of the entire cooling system can operate continuously and stably. A middle barrier pipe 45 is fixedly connected to the inner wall of the outer connection sleeve 42. The middle barrier pipe 45 is used to block the inner wall of the outer connection sleeve 42 to form two independent spaces inside and outside. The external space is used to transmit the discharged coolant, and the internal space is filled with air for heat insulation, forming an effective heat insulation layer, reducing the heat exchange or interference between the input coolant and the output coolant. At the same time, the output coolant is also lower than the ambient temperature, playing a role in heat insulation for the input coolant, and double-insulating the input coolant. Through this double heat insulation design, not only is the heat loss of the coolant during the flow process effectively avoided, but also the coolant temperature can be maintained within the optimal working range, improving the cooling efficiency and system stability. A support plate 46 is fixedly connected to the inner wall of the outer connection sleeve 42. The support plate 46 is used to support the channel inside the outer connection sleeve 42. The support plate 46 is used to reinforce the structure of the channel inside the outer connection sleeve 42, preventing deformation or damage caused by pressure changes during the flow of the coolant. A through hole 47 is provided on the support plate 46 for the passage of the output coolant, ensuring that the coolant can flow evenly through the entire pipeline system, providing a necessary flow path without affecting the stability of the support structure and supporting the smooth output of the coolant, further enhancing the overall fluid guiding ability, durability, and heat isolation effect of the inlet and outlet pipe fitting 4, and ensuring the stable operation of the equipment in a high-temperature and high-pressure working environment.
[0025] In summary, for the tension horsehead for well logging, external coolant is pumped in through the input pipe 41 at the input end 24 and input into the spiral cooling flow channel 23. During the downward flow in the spiral structure, it exchanges heat fully with the horsehead 1, and simultaneously cools the coolant in the sealed space formed by the combined action of the sealing sleeve 22, the annular part 31, and the horsehead 1, improving the temperature stability of the coolant in the sealed space. Then, it flows out through the output end 25, the annular part 31, the connecting pipe 26, and the outflow pipe 27. The whole process constitutes a continuous circulating cooling system, which can effectively keep the working temperature of the tension horsehead 1 constant during downhole operations, ensuring the accuracy of well logging operations and the stable operation of the equipment.
[0026] The coolant after heat exchange enters the inner annular flow channel 32 of the barrier mechanism 3 through the output end 25. Driven by the internal pressure of the telescopic tube 36, the barrier cylindrical block 35 extends out to form an elastic support structure. The coolant pressure acts on the telescopic tube 36, pushing the connecting end block 34 and the barrier cylindrical block 35 to extend outwards. The balls of the barrier cylindrical block 35 contact the wellbore, realizing the isolation and buffering between the device main body and the wellbore. The barrier cylindrical blocks 35 on the upper and lower two annular parts 31 extend out simultaneously under the action of the same coolant pressure, contacting the wellbore, playing the role of isolation and buffering, which can effectively prevent excessive contact between the device main body part and the inner wall of the well, avoid excessive heat transfer from the inner wall of the well to the device, further block the heat, and prevent the device from overheating.
[0027] The cooled coolant is discharged through the annular part 31, the connecting pipe 26, the outflow pipe 27, the adapter pipe 43, the outer connecting sleeve 42, and the output pipe 44, guiding the coolant to the external recovery or discharge system to ensure the continuous and stable operation of the liquid flow in the entire cooling system. A middle barrier pipe 45 is fixedly connected to the inner wall of the outer connecting sleeve 42. The middle barrier pipe 45 is used to block the inner wall of the outer connecting sleeve 42 to form two independent spaces inside and outside. The external space is used to transmit the discharged coolant, and the internal space is filled with air for heat insulation, forming an effective heat insulation layer, reducing the heat exchange or interference between the input coolant and the output coolant. At the same time, the output coolant is also lower than the ambient temperature, playing a role in heat insulation for the input coolant. The double barrier effect insulates the input coolant. Through this double heat insulation design, not only the heat loss of the coolant during the flow process is effectively avoided, but also the coolant temperature can be maintained within the optimal working range, improving the cooling efficiency and system stability.
[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.
Claims
1. A tension bridle for well logging, characterized in that: include: Bridle (1); A cooling mechanism (2), the cooling mechanism (2) being arranged on the outer wall of the bridle (1), the cooling mechanism (2) being used for liquid cooling and heat dissipation of the bridle (1); A blocking mechanism (3), the blocking mechanism (3) being arranged on the cooling mechanism (2), the blocking mechanism (3) being used to prevent the cooling mechanism (2) from touching the inner wall of the well; An inlet and outlet pipe (4), wherein the inlet and outlet pipe (4) is arranged on the cooling mechanism (2), and the inlet and outlet pipe (4) is used to transport the cooling liquid in and out of the cooling mechanism (2) and to keep the incoming cooling liquid warm.
2. A well logging tension bridle according to claim 1, characterized in that: The cooling mechanism (2) comprises an insulating lightweight rod (21), one end of the insulating lightweight rod (21) being fixedly connected to the outer wall of the bridle (1), and the other end of the insulating lightweight rod (21) being fixedly connected to a sealing sleeve (22).
3. A well logging tension bridle according to claim 2, characterized in that: The outer wall of the bridle (1) is fixedly connected to a spiral cooling channel (23), the top of the spiral cooling channel (23) is fixedly connected to an input end (24), and the bottom of the spiral cooling channel (23) is provided with an output end (25).
4. A well logging tension bridle according to claim 3, characterized in that: The output end (25) is fixedly connected to an annular member (31), two annular members (31) are provided, a connecting pipe (26) is fixedly connected between the two annular members (31), and an outflow pipe (27) is fixedly connected to the top of the annular member (31).
5. A well logging tension bridle according to claim 4, characterized in that: The blocking mechanism (3) comprises an inner annular flow channel (32), the inner wall of the annular member (31) is provided with the inner annular flow channel (32), the inner wall of the annular member (31) is provided with a return spring (33), one end of the return spring (33) is fixedly connected to the inner wall of the annular member (31), the other end of the return spring (33) is fixedly connected to a connecting end block (34), the outer wall of the connecting end block (34) is fixedly connected to a blocking cylindrical block (35), the outer wall of the connecting end block (34) is provided with a telescopic tube (36), one end of the telescopic tube (36) is fixedly connected to the outer wall of the connecting end block (34), and the other end of the telescopic tube (36) is fixedly connected to a sealing ring (37).
6. A well logging tension bridle according to claim 5, characterized in that: The outer wall of the blocking cylindrical block (35) is slidably connected to the inner wall of the annular member (31), and the outer wall of the sealing ring (37) is fixedly connected to the inner wall of the annular member (31).
7. A well logging tension bridle according to claim 6, characterized in that: The return spring (33), the connection end block (34), the blocking cylindrical block (35), the telescopic tube (36), and the sealing ring (37) are provided in four groups. The four groups of the return spring (33), the connection end block (34), the blocking cylindrical block (35), the telescopic tube (36), and the sealing ring (37) are arranged on the inner wall of the annular member (31) in a circular array, and the blocking cylindrical block (35) is provided with a ball bearing.
8. A well logging tension bridle according to claim 7, characterized in that: The inlet and outlet pipe fitting (4) comprises an inlet pipe (41), the inlet pipe (41) being fixedly connected to the inlet end (24), the outer wall of the inlet pipe (41) being fixedly connected to an outer connecting sleeve (42), the bottom of the outer connecting sleeve (42) being fixedly connected to a transfer pipe (43), the bottom of the transfer pipe (43) being fixedly connected to an outflow pipe (27), the top of the outer connecting sleeve (42) being fixedly connected to an output pipe (44), the inner wall of the outer connecting sleeve (42) being fixedly connected to a middle barrier pipe (45), and the inner wall of the outer connecting sleeve (42) being fixedly connected to a support plate (46).
9. A well logging tension bridle according to claim 8, characterized in that: The support plate (46) is provided with a through hole (47) for passing the output cooling liquid.