A center water eye type while-drilling measurement and control system with active cooling function

Abstract

The application provides a center water eye type while-drilling measurement and control system with an active cooling function, which comprises a while-drilling measurement and control system short section, a heat preservation device, at least one active cooling device, a heat transfer device, at least one while-drilling measurement and control circuit and sensor, and at least one first driving turbine with a magnetic pole. The while-drilling measurement and control circuit and sensor are installed in the while-drilling measurement and control system short section. The active cooling device is rotatably installed in the while-drilling measurement and control system short section. The first driving turbine is rotatably sleeved at the bottom of the active cooling device. The top end of the active cooling device is adjacent to the while-drilling measurement and control circuit and sensor. The heat transfer device is sleeved at the bottom of the active cooling device. The heat preservation device is sleeved at the top of the active cooling device. A plurality of permanent magnets are arranged on the circumferential side wall of the first driving turbine. A circumferential magnet is arranged on the circumferential side wall of the bottom of the active cooling device. Cold energy is generated by the self-provided active cooling device, and the working temperature of the while-drilling measurement and control system is reduced to below the environmental temperature that can be withstood by the system.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, and in particular to a central water-eye type drilling measurement and control system with active cooling function. Background Technology

[0002] The formation of oil and gas wellbores occurs through the rotation of the drill string or the cutting of underground rock formations by the drill bit driven by downhole power drilling tools. To ensure safe and efficient drilling operations, it is necessary to continuously monitor engineering parameters such as drill pressure, torque, annular water pressure, and temperature near the drill bit, as well as geological parameters such as resistivity, porosity, and gamma ray while drilling. To obtain these engineering and geological parameters while drilling, various parameter measurement circuits or sensors need to be installed at the bottom of the drill string and near the drill bit.

[0003] With increasing energy demand, the exploration and development of deep and ultra-deep oil and gas resources has become a crucial area for increasing reserves and production. However, during drilling into deep and ultra-deep formations, the high formation temperatures exceed the temperature limits of various components or sensors in the drilling monitoring and control system (TMS), causing them to malfunction or even fail. Generally, high-temperature-induced failures of various components or sensors in the TMS can occur in two modes: 1) When components or sensors are operating, the thermal stress generated by their own temperature rise reduces their service life; 2) When the ambient temperature in deep and ultra-deep formations reaches a critical value, various components or sensors in the TMS will be damaged. Failures caused by overheating not only increase the cost of replacing failed components or sensors but also highlight the lack of high-temperature resistant electronic components, making it impossible to meet the exploration and development needs of deeper oil and gas resources.

[0004] Currently, high-temperature resistant technology for downhole tools in oil and gas wells has been identified as a key core technology for achieving efficient exploration and profitable development of deep and ultra-deep oil and gas resources. Therefore, overcoming the relevant core module technologies of high-temperature resistant drilling monitoring and control systems is both important and urgently needed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a central water-eye type drilling measurement and control system with active cooling function, which addresses the shortcomings of the existing technology.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A center-type water-eye measurement and control system with active cooling function, comprising: a measurement and control system sub, a heat preservation device, at least one active cooling device, a heat transfer device, at least one measurement and control circuit and sensor, and at least one first drive turbine with magnetic poles. The measurement and control system sub is a tube structure. The measurement and control circuit and sensor are installed in the measurement and control system sub. The active cooling device is rotatably installed in the measurement and control system sub. The first drive turbine is rotatably sleeved at the bottom of the active cooling device. The top of the active cooling device is adjacent to the measurement and control circuit and sensor. The heat transfer device is sleeved at the bottom of the active cooling device. The heat preservation device is sleeved at the top of the active cooling device. Multiple permanent magnets are provided on the peripheral sidewall of the first drive turbine. A circumferential magnet is provided on the peripheral sidewall of the bottom of the active cooling device.

[0007] The beneficial effects of adopting the technical solution of this invention are as follows: The active cooling device uses a turbine rotation motion drive method instead of an electric drive method to achieve its own high-temperature resistance. When the drilling fluid flows, it washes and drives the turbine, causing it to rotate. This rotation, through magnetic force, drives the internal magnets of the active cooling device to rotate, thereby driving the active cooling device to work and generating the cooling capacity required for cooling. By relying on the cooling capacity generated by its built-in active cooling device, the heat transferred from the high-temperature environment to the drilling monitoring and control system (TMS) and the self-generated heat generated during the operation of the TMS are balanced, thus reducing the operating temperature of the TMS to below the ambient temperature it can withstand, and improving the temperature range of the TMS.

[0008] Furthermore, the active cooling device includes: a hot end of the active cooling device, a connecting pipe for the active cooling device, and a cold end of the active cooling device. The hot end of the active cooling device is connected to the cold end of the active cooling device through the connecting pipe. The first drive turbine is rotated and sleeved on the outside of the hot end of the active cooling device. The cold end of the active cooling device is adjacent to the drilling measurement and control circuit and the sensor. The heat transfer device is sleeved on the outside of the hot end of the active cooling device, and the heat preservation device is sleeved on the outside of the cold end of the active cooling device.

[0009] The beneficial effects of adopting the above-mentioned further technical solution are as follows: A heat transfer device is installed between the hot end of the active cooling device and the pressure shell to transfer the heat accumulated at the hot end of the active cooling device to the outer wall of the pressure shell, and then carried away by the circulating drilling fluid; a heat insulation device is installed between the cold end of the active cooling device and the pressure shell to isolate the cold energy on the drilling monitoring and control system from the pressure shell. This forms a stable temperature gradient.

[0010] Furthermore, the heat transfer device is made of copper foil or aluminum foil, and the insulation device is made of aerogel.

[0011] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: The heat transfer device can be made of layers of copper foil or aluminum foil. On the one hand, this material has high thermal conductivity, which helps to transfer heat quickly; on the other hand, the flexibility of the foil can eliminate the existence of air gaps and reduce thermal resistance. The insulation device can be made of aerogel. On the one hand, this material has a high thermal insulation coefficient, which is beneficial for heat preservation; on the other hand, this material has toughness, which can play a role in shock absorption during drilling.

[0012] Furthermore, the drilling measurement and control system subsection includes a second drive turbine, a rotating shaft, and an electrical pure iron. The second drive turbine is sleeved on the rotating shaft and located above the electrical pure iron. The electrical pure iron is sleeved on the outside of the rotating shaft and installed on the inner wall of the drilling measurement and control system subsection. The electrical pure iron is located above the drilling measurement and control circuit and sensors.

[0013] The beneficial effects of adopting the above-mentioned further technical solution are as follows: On the one hand, it provides power to various components or sensors of the drilling measurement and control system, realizing the functions of downhole information acquisition, storage, and conversion; on the other hand, it provides power to the actuator of the pulse generator to generate pulse signals carrying information. The drive turbine rotates the rotating shaft together, thereby generating an induced current through interaction with the electrical pure iron. The current provides energy to the drilling measurement and control circuit and sensor 1 (or / and the drilling measurement and control circuit or sensor 1), enabling it to acquire, store, and convert various types of downhole data; at the same time, the current provides energy to the actuator motor of the pulse generator, driving the pulse generator valve core and pulse generator valve seat to open and close, sending pulse signals to the surface for data transmission.

[0014] Furthermore, a guide impeller is fitted onto the rotating shaft, and the guide impeller is located above the second drive turbine.

[0015] The beneficial effect of adopting the above-mentioned further technical solution is that during the drilling process, when the drilling fluid flows through the water hole in the center of the drill string, it changes direction through the guide impeller and then flushes and drives the turbine.

[0016] Furthermore, one end of the drilling measurement and control system subsection is connected to a pulser support subsection, which is a tube structure and contains a pulser.

[0017] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the pulser support sub is used to support the pulser, and the threads at both ends of the pulser support sub are used for docking with the upper and lower drilling tools; the pulser is used to convert the acquired downhole data into pulse signals and send them to the surface for data transmission. The drilling monitoring and control system sub is used to support the drilling monitoring and control system, active cooling device, etc., and its threads at both ends are used for docking with the upper and lower drilling tools.

[0018] Furthermore, the pulse generator includes: a pulse generator valve seat, a pulse generator valve core, an actuator dynamic seal, an actuator motor, a centralizer, and a communication connector. The pulse generator valve seat and the centralizer are installed on the inner side wall of the pulse generator support section. The actuator motor is installed in the centralizer. The communication connector is connected to the actuator motor. The actuator motor is connected to one end of the pulse generator valve core. The actuator dynamic seal is installed at the connection position between the actuator motor and the pulse generator valve core. The other end of the pulse generator valve core is slidably installed in the pulse generator valve seat.

[0019] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the pulser support sub is used to support the pulser, and the threads at both ends of the pulser support sub are used for docking with the upper and lower drilling tools; the pulser is used to convert the acquired downhole data into pulse signals and send them to the surface for data transmission. The drilling monitoring and control system sub is used to support the drilling monitoring and control system, active cooling device, etc., and its threads at both ends are used for docking with the upper and lower drilling tools.

[0020] Furthermore, multiple permanent magnets of different polarities are alternately arranged on the peripheral sidewall of the first drive turbine.

[0021] The beneficial effects of adopting the above-mentioned further technical solution are as follows: permanent magnets of different polarities are alternately arranged inside the circumference of the active cooling device's driving turbine, and corresponding circumferential magnets are arranged inside the active cooling device. When the drilling fluid flows, it washes over the driving turbine, causing it to rotate. This rotation is driven by magnetic force to rotate the magnets inside the active cooling device, thereby driving the active cooling device to work and generating the cooling capacity required for cooling.

[0022] The advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a central water-eye type drilling measurement and control system with active cooling function provided in an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of the pulser support section provided in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of a short section of the drilling measurement and control system provided in an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the active cooling device provided in an embodiment of the present invention.

[0027] Figure 5 A schematic diagram of the structure of the first drive turbine provided in an embodiment of the present invention.

[0028] Reference numerals: 1. Pulse generator support sub; 2. Pulse generator; 3. Downhole generator; 4. Drilling while control system with active cooling device; 5. Drilling while control system sub; 6. Drilling fluid; 7. Pulse generator valve seat; 8. Pulse generator valve core; 9. Actuator dynamic seal; 10. Actuator motor; 11. Centralizer; 12. Communication connector; 13. Guide impeller; 14. Second drive turbine; 15. Rotary shaft; 16. Electrical pure iron; 17. Pressure shell; 8. Insulation device; 19. Measurement and control circuit while drilling and sensor 1; 20. Active cooling device 1; 21. Heat transfer device; 22. Measurement and control circuit while drilling and sensor 2; 23. Active cooling device 2; 24. First drive turbine; 25. Hot end of active cooling device; 26. Connecting pipeline of active cooling device; 27. Cold end of active cooling device; 28. Impeller; 29. ​​Permanent magnet; 30. Active cooling device; 31. Measurement and control circuit while drilling and sensor. Detailed Implementation

[0029] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0030] like Figures 1 to 5 As shown, this embodiment of the invention provides a center-type water-eye measurement and control system with active cooling function, including: a measurement and control system section 5, a heat preservation device 18, at least one active cooling device 30, a heat transfer device 21, at least one measurement and control circuit and sensor 31, and at least one first drive turbine 24 with magnetic poles. The measurement and control system section 5 is a tube structure. The measurement and control circuit and sensor 31 are installed in the measurement and control system section 5. The active cooling device 30 is rotatably installed in the measurement and control system section 5. The first drive turbine 24 is rotatably sleeved on the bottom of the active cooling device 30. The top of the active cooling device 30 is adjacent to the measurement and control circuit and sensor 31. The heat transfer device 21 is sleeved on the bottom of the active cooling device 30. The heat preservation device 18 is sleeved on the top of the active cooling device 30. A plurality of permanent magnets 29 are provided on the peripheral sidewall of the first drive turbine 24. A circumferential magnet is provided on the peripheral sidewall of the bottom of the active cooling device 30.

[0031] The beneficial effects of adopting the technical solution of this invention are as follows: The active cooling device uses a turbine rotation motion drive method instead of an electric drive method to achieve its own high-temperature resistance. When the drilling fluid flows, it washes and drives the turbine, causing it to rotate. This rotation, through magnetic force, drives the internal magnets of the active cooling device to rotate, thereby driving the active cooling device to work and generating the cooling capacity required for cooling. By relying on the cooling capacity generated by its built-in active cooling device, the heat transferred from the high-temperature environment to the drilling monitoring and control system (TMS) and the self-generated heat generated during the operation of the TMS are balanced, thus reducing the operating temperature of the TMS to below the ambient temperature it can withstand, and improving the temperature range of the TMS.

[0032] Among them, the active cooling device 30 can be active cooling device 20 and active cooling device 23. The drilling measurement and control circuit and sensor 31 can be drilling measurement and control circuit and sensor 19 and drilling measurement and control circuit and sensor 22.

[0033] Drilling fluid 6 flows through the pulse generator support section 1 and the drilling monitoring and control system section 5. The arrows in the figure represent the flow direction and trajectory of the drilling fluid 6.

[0034] To address the issue of high-temperature intolerance in various components and sensors of existing drilling measurement and control systems, this invention provides a central water-eye type drilling measurement and control system with active cooling functionality. This system utilizes its built-in active cooling device to generate cooling energy, balancing the heat transferred to the drilling measurement and control system from the high-temperature environment with the self-generated heat generated during system operation. This reduces the operating temperature of the drilling measurement and control system to below the ambient temperature it can withstand, thereby improving the system's temperature operating range.

[0035] A central water-eye drilling monitoring and control system with active cooling function includes:

[0036] The pulse generator support sub is used to support the pulse generator inside, and the threads at both ends of the pulse generator support sub are used to connect with the upper and lower drill tools.

[0037] A pulse generator is used to convert the acquired downhole data into pulse signals and send them to the surface for data transmission.

[0038] Downhole generators serve two purposes: firstly, to provide power to the various components and sensors of the drilling and monitoring system, enabling the acquisition, storage, and conversion of downhole information; and secondly, to provide power to the pulse actuator to generate pulse signals carrying information.

[0039] The drilling measurement and control system 4 with active cooling device can provide cooling to the drilling measurement and control system, forming a high-temperature resistant drilling measurement and control system; the drilling measurement and control system with active cooling device includes: active cooling device, drilling measurement and control circuit and sensor.

[0040] The drilling measurement and control system sub is used to support the drilling measurement and control system, active cooling device, etc., and its two ends are threaded for docking with the upper and lower drill tools;

[0041] Drilling fluid provides energy to the downhole generator that powers the drilling monitoring and control system, and also provides the energy required for the operation of the active cooling device.

[0042] Preferably, the active cooling device is located inside the central waterhole pressure shell (pressure shell 17), which can cool down the various components and sensors of the drilling measurement and control system inside the pressure shell, thereby improving the applicable temperature range of the drilling measurement and control system.

[0043] Preferably, a set of drilling measurement and control systems or a group of drilling measurement and control systems can be set up inside the central waterhole pressure shell (pressure shell 17). Each set of drilling measurement and control systems can be equipped with an active cooling device, which can improve the high temperature resistance of a single or group of drilling measurement and control systems, thereby enabling the simultaneous measurement of multiple parameters under high temperature environment.

[0044] Preferably, the components and sensors of the drilling measurement and control system can be used to measure geological parameters as well as engineering parameters, thereby providing drilling engineers with real-time data to support safe and efficient drilling operations.

[0045] Preferably, the active cooling device consists of three parts: a hot end, a connecting pipeline, and a cold end. The connecting pipeline is flexible, allowing for adjustment of the spatial layout of the cold end while keeping the hot end fixed, to meet engineering requirements.

[0046] Preferably, a heat transfer device is installed between the hot end of the active cooling device and the pressure shell to transfer the heat accumulated at the hot end to the outer wall of the pressure shell, which is then carried away by the circulating drilling fluid; a heat insulation device is installed between the cold end of the active cooling device and the pressure shell to isolate the cold energy from the drilling monitoring and control system from the pressure shell. This creates a stable temperature gradient.

[0047] Preferably, the heat transfer device can be made of layers of copper or aluminum foil wound together. This material has high thermal conductivity, which facilitates rapid heat transfer; furthermore, the flexibility of the foil eliminates air gaps and reduces thermal resistance. The insulation device can be made of aerogel. This material has a high thermal insulation coefficient, which is beneficial for heat preservation; additionally, its toughness can provide shock absorption during drilling.

[0048] Preferably, the active cooling device uses a turbine rotation motion drive instead of an electric drive to achieve its own high-temperature resistance.

[0049] Preferably, permanent magnets of different polarities are alternately arranged on the circumferential interior of the active cooling device's driving turbine (first driving turbine 24), and corresponding circumferential magnets are arranged inside the active cooling device. When the drilling fluid flows, it washes over the driving turbine, causing it to rotate. This rotation drives the magnets inside the active cooling device to rotate via magnetic force, thereby activating the active cooling device and generating the cooling capacity required for cooling.

[0050] During drilling in high-temperature and ultra-high-temperature formations, an active cooling device generates cooling to balance the heat transferred from the high-temperature environment to the drilling measurement and control system and the self-generated heat generated during the operation of the drilling measurement and control system. This reduces the operating temperature of the drilling measurement and control system to below the ambient temperature it can withstand, thereby improving the temperature applicability range of the drilling measurement and control system and forming a high-temperature resistant drilling measurement and control method.

[0051] like Figures 1 to 5 As shown, the active cooling device further includes: an active cooling device hot end 25, an active cooling device connecting pipe 26, and an active cooling device cold end 27. The active cooling device hot end 25 is connected to the active cooling device cold end 27 through the active cooling device connecting pipe 26. The first drive turbine 24 is rotated and sleeved on the outside of the active cooling device hot end 25. The active cooling device cold end 27 is adjacent to the drilling measurement and control circuit and the sensor 31. The heat transfer device 21 is sleeved on the outside of the active cooling device hot end 25, and the heat preservation device 18 is sleeved on the outside of the active cooling device cold end 27.

[0052] The beneficial effects of adopting the above-mentioned further technical solution are as follows: A heat transfer device is installed between the hot end of the active cooling device and the pressure shell to transfer the heat accumulated at the hot end of the active cooling device to the outer wall of the pressure shell, and then carried away by the circulating drilling fluid; a heat insulation device is installed between the cold end of the active cooling device and the pressure shell to isolate the cold energy on the drilling monitoring and control system from the pressure shell. This forms a stable temperature gradient.

[0053] like Figures 1 to 5 As shown, the heat transfer device 21 is made of copper foil or aluminum foil, and the heat insulation device 18 is made of aerogel.

[0054] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: The heat transfer device can be made of layers of copper foil or aluminum foil. On the one hand, this material has high thermal conductivity, which helps to transfer heat quickly; on the other hand, the flexibility of the foil can eliminate the existence of air gaps and reduce thermal resistance. The insulation device can be made of aerogel. On the one hand, this material has a high thermal insulation coefficient, which is beneficial for heat preservation; on the other hand, this material has toughness, which can play a role in shock absorption during drilling.

[0055] like Figures 1 to 5 As shown, further, the drilling measurement and control system subsection 5 is provided with a second drive turbine 14, a rotating shaft 15, and an electrical pure iron 16. The second drive turbine 14 is sleeved on the rotating shaft 15 and is located above the electrical pure iron 16. The electrical pure iron 16 is sleeved on the outside of the rotating shaft 15 and is installed on the inner wall of the drilling measurement and control system subsection 5. The electrical pure iron 16 is located above the drilling measurement and control circuit and the sensor 31.

[0056] The beneficial effects of adopting the above-mentioned further technical solution are as follows: On the one hand, it provides power to various components or sensors of the drilling measurement and control system, realizing the functions of downhole information acquisition, storage, and conversion; on the other hand, it provides power to the actuator of the pulse generator to generate pulse signals carrying information. The drive turbine rotates the rotating shaft together, thereby generating an induced current through interaction with the electrical pure iron. The current provides energy to the drilling measurement and control circuit and sensor 1 (or / and the drilling measurement and control circuit or sensor 1), enabling it to acquire, store, and convert various types of downhole data; at the same time, the current provides energy to the actuator motor of the pulse generator, driving the pulse generator valve core and pulse generator valve seat to open and close, sending pulse signals to the surface for data transmission.

[0057] Among them, the underground generator 3 can be an electrical pure iron 16 and a rotating shaft 15.

[0058] like Figures 1 to 5 As shown, a guide impeller 13 is further mounted on the rotating shaft 15, and the guide impeller 13 is located above the second drive turbine 14.

[0059] The beneficial effect of adopting the above-mentioned further technical solution is that during the drilling process, when the drilling fluid flows through the water hole in the center of the drill string, it changes direction through the guide impeller and then flushes and drives the turbine.

[0060] like Figures 1 to 5 As shown, further, one end of the drilling measurement and control system subsection 5 is connected to a pulser support subsection 1, the pulser support subsection 1 is a tube structure, and the pulser support subsection 1 is provided with a pulser 2.

[0061] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the pulser support sub is used to support the pulser, and the threads at both ends of the pulser support sub are used for docking with the upper and lower drilling tools; the pulser is used to convert the acquired downhole data into pulse signals and send them to the surface for data transmission. The drilling monitoring and control system sub is used to support the drilling monitoring and control system, active cooling device, etc., and its threads at both ends are used for docking with the upper and lower drilling tools.

[0062] like Figures 1 to 5 As shown, the pulser 2 further includes: a pulser valve seat 7, a pulser valve core 8, an actuator dynamic seal 9, an actuator motor 10, a centralizer 11, and a communication connector 12. The pulser valve seat 7 and the centralizer 11 are installed on the inner side wall of the pulser support section 1. The actuator motor 10 is installed in the centralizer 11. The communication connector 12 is connected to the actuator motor 10. The actuator motor 10 is connected to one end of the pulser valve core 8. The actuator dynamic seal 9 is installed at the connection position between the actuator motor 10 and the pulser valve core 8. The other end of the pulser valve core 8 is slidably installed on the pulser valve seat 7.

[0063] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the pulser support sub is used to support the pulser, and the threads at both ends of the pulser support sub are used for docking with the upper and lower drilling tools; the pulser is used to convert the acquired downhole data into pulse signals and send them to the surface for data transmission. The drilling monitoring and control system sub is used to support the drilling monitoring and control system, active cooling device, etc., and its threads at both ends are used for docking with the upper and lower drilling tools.

[0064] like Figures 1 to 5 As shown, further, a plurality of permanent magnets 29 of different polarities are alternately arranged on the peripheral sidewall of the first drive turbine 24.

[0065] The beneficial effects of adopting the above-mentioned further technical solution are as follows: permanent magnets of different polarities are alternately arranged inside the circumference of the active cooling device's driving turbine, and corresponding circumferential magnets are arranged inside the active cooling device. When the drilling fluid flows, it washes over the driving turbine, causing it to rotate. This rotation is driven by magnetic force to rotate the magnets inside the active cooling device, thereby driving the active cooling device to work and generating the cooling capacity required for cooling.

[0066] The first drive turbine 24 includes a bushing, an impeller 28, and a plurality of permanent magnets 29. The impeller 28 is mounted on the bushing and has blades spaced apart from each other. The plurality of permanent magnets 29 are located between two adjacent blades 28 and are all connected to the bushing.

[0067] like Figure 1As shown in the figure, this embodiment of a center-type water-eye drilling measurement and control system with active cooling function can be a center-type high-temperature resistant drilling measurement and control system with active cooling function, including: pulser support sub 1, pulser 2, downhole generator 3, drilling measurement and control system 4 with active cooling device, drilling measurement and control system sub 5, and drilling fluid 6. The downhole generator 3 consists of a rotating shaft 15 and an electrical pure iron 16.

[0068] The drilling measurement and control system has a pressure shell 17 in the short section. The active cooling device is located in the pressure shell 17 of the central water eye. It can cool down the various components and sensors of the drilling measurement and control system in the pressure shell 17 to improve the applicable temperature range of the drilling measurement and control system.

[0069] The high-temperature resistant measurement and control system is located inside the central waterhole pressure shell 17. One or a group of measurement and control systems can be installed during drilling. Each measurement and control system can be equipped with an active cooling device, which can improve the high-temperature resistance of a single or group of measurement and control systems, thereby enabling the simultaneous measurement of multiple parameters under high-temperature conditions.

[0070] The components and sensors of the drilling measurement and control system can be used to measure geological parameters as well as engineering parameters, thereby providing drilling engineers with real-time data to support safe and efficient drilling operations.

[0071] The active cooling device consists of three parts: a hot end 25, a connecting pipe 26, and a cold end 27. The connecting pipe is flexible, allowing for adjustment of the spatial layout of the cold end while keeping the hot end fixed, to meet engineering requirements.

[0072] A heat transfer device 21 is installed between the hot end 25 of the active cooling device and the pressure shell 17 to transfer the heat accumulated at the hot end to the outer wall of the pressure shell 17, which is then carried away by the circulating drilling fluid. A heat insulation device 18 is installed between the cold end 27 of the active cooling device and the pressure shell 17 to isolate the cooling energy on the drilling monitoring and control system from the pressure shell 17. This creates a stable temperature gradient.

[0073] The heat transfer device 21 can be made of layers of copper or aluminum foil wound together. On the one hand, this material has high thermal conductivity, which helps to transfer heat quickly. On the other hand, the flexibility of the foil can eliminate the existence of air gaps and reduce thermal resistance. The heat insulation device 18 can be made of aerogel. On the one hand, this material has a high thermal insulation coefficient, which is beneficial for heat preservation. On the other hand, this material has toughness, which can play a shock absorption role during drilling.

[0074] The active cooling device uses a turbine rotation motion drive instead of an electric drive to achieve its own high-temperature resistance.

[0075] The active cooling device has permanent magnets of different polarities alternately arranged on the circumferential interior of the driving turbine (first driving turbine 24), and corresponding circumferential magnets are arranged inside the active cooling device. When the drilling fluid flows, it washes over the driving turbine (first driving turbine 24), causing it to rotate. This rotation drives the magnets inside the active cooling device to rotate through magnetic force, thereby driving the active cooling device to work and generate the cooling capacity required for cooling.

[0076] The working principle of this embodiment is described in detail below:

[0077] During drilling, as the drilling fluid 6 flows through the central waterhole of the drill string, it changes direction via the guide impeller 13 and washes over the drive turbine (second drive turbine 14). The drive turbine (second drive turbine 14) drives the rotating shaft 15 to rotate, which in turn interacts with the electrical pure iron 16 to generate an induced current. This current provides energy to the drilling monitoring and control circuit and sensor 19 (and / or the drilling monitoring and control circuit and sensor 22), enabling them to collect, store, and convert various downhole data. Simultaneously, the current provides energy to the pulse generator actuator motor 10, causing the pulse generator valve core 8 and pulse generator valve seat 7 to open and close, sending pulse signals to the surface for data transmission. The above process realizes the acquisition and transmission of downhole data. On the other hand, the drilling fluid 6 drives the magnetically driven turbine (first drive turbine 24) to rotate. Under the action of magnetic force, the active cooling device 20 (and / or active cooling device 23) begins to work and generate cooling. The cooling energy is transferred to the drilling measurement and control circuit and sensor 19 (and / or drilling measurement and control circuit and sensor 22) through the cold end 27 of the active cooling device, thereby reducing the temperature of the circuit or sensor. At the same time, the heat insulation device 18 thermally isolates the drilling measurement and control circuit and sensor 19 (and / or drilling measurement and control circuit and sensor 22) from the pressure shell 17, ensuring that the temperature of the drilling measurement and control circuit and sensor 19 (and / or drilling measurement and control circuit and sensor 22) is lower than the ambient temperature. The heat generated by the hot end 25 of the active cooling device is transferred to the pressure shell 17 through the heat transfer device 21, and then carried away by the circulating drilling fluid 6. Thus, under the combined action of drilling fluid 6, insulation device 18, heat transfer device 21, drilling measurement and control circuit and sensor 19 or drilling measurement and control circuit and sensor 22, active cooling device 10 or active cooling device 23, the active cooling device 10 or active cooling device 23 generates cooling capacity to balance the heat transferred to the drilling measurement and control system from the high-temperature environment and the self-generated heat generated during the operation of the drilling measurement and control system. This reduces the operating temperature of the drilling measurement and control system to below the ambient temperature it can withstand, improves the temperature applicable range of the drilling measurement and control system, and forms a high-temperature resistant drilling measurement and control system and method, improving the level of safe and efficient drilling technology in deep and ultra-deep wells, and realizing efficient exploration and profitable development of oil and gas resources.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A central water-eye type drilling monitoring and control system with active cooling function, characterized in that, include: The system comprises a drilling measurement and control system subsection (5), a heat preservation device (18), at least one active cooling device, a heat transfer device (21), at least one drilling measurement and control circuit and sensor, and at least one first drive turbine (24) with magnetic poles. The drilling measurement and control system subsection (5) is a tube structure. The drilling measurement and control circuit and sensor are installed in the drilling measurement and control system subsection (5). The active cooling device is rotatably installed in the drilling measurement and control system subsection (5). The first drive turbine (24) is rotatably sleeved at the bottom of the active cooling device. The top of the active cooling device is adjacent to the drilling measurement and control circuit and sensor. The heat transfer device (21) is sleeved at the bottom of the active cooling device. The heat preservation device (18) is sleeved at the top of the active cooling device. Multiple permanent magnets (29) are provided on the peripheral sidewall of the first drive turbine (24). A circumferential magnet is provided on the peripheral sidewall of the bottom of the active cooling device. The active cooling device includes: The active cooling device has a hot end (25), an active cooling device connecting pipe (26), and an active cooling device cold end (27). The active cooling device hot end (25) is connected to the active cooling device cold end (27) through the active cooling device connecting pipe (26). The first drive turbine (24) is rotated and sleeved on the outside of the active cooling device hot end (25). The active cooling device cold end (27) is adjacent to the drilling measurement and control circuit and the sensor. The heat transfer device (21) is sleeved on the outside of the active cooling device hot end (25). The heat preservation device (18) is sleeved on the outside of the active cooling device cold end (27). One end of the drilling measurement and control system subsection (5) is connected to a pulser support subsection (1). The pulser support subsection (1) is a tube structure. A pulser (2) is provided in the pulser support subsection (1). Multiple permanent magnets (29) of different polarities are alternately arranged on the peripheral sidewall of the first drive turbine (24).

2. The central water-eye type drilling monitoring and control system with active cooling function according to claim 1, characterized in that, The heat transfer device (21) is made of copper foil or aluminum foil, and the heat insulation device (18) is made of aerogel.

3. The central water-eye type drilling monitoring and control system with active cooling function according to claim 1, characterized in that, The drilling measurement and control system subsection (5) is provided with a second drive turbine (14), a rotating shaft (15), and an electrical pure iron (16). The second drive turbine (14) is sleeved on the rotating shaft (15) and is located above the electrical pure iron (16). The electrical pure iron (16) is sleeved on the outside of the rotating shaft (15) and is installed on the inner wall of the drilling measurement and control system subsection (5). The electrical pure iron (16) is located above the drilling measurement and control circuit and the sensor.

4. A central water-eye type drilling monitoring and control system with active cooling function according to claim 3, characterized in that, A guide impeller (13) is fitted on the rotating shaft (15), and the guide impeller (13) is located above the second drive turbine (14).

5. A central water-eye type drilling monitoring and control system with active cooling function according to claim 1, characterized in that, The pulse generator (2) includes: a pulse generator valve seat (7), a pulse generator valve core (8), an actuator dynamic seal (9), an actuator motor (10), a stabilizer (11), and a communication connector (12). The pulse generator valve seat (7) and the stabilizer (11) are installed on the inner side wall of the pulse generator support section (1). The actuator motor (10) is installed in the stabilizer (11). The communication connector (12) is connected to the actuator motor (10). The actuator motor (10) is connected to one end of the pulse generator valve core (8). The actuator dynamic seal (9) is installed at the connection position between the actuator motor (10) and the pulse generator valve core (8). The other end of the pulse generator valve core (8) is slidably installed in the pulse generator valve seat (7).

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