A side wall cabin type drilling measurement and control system with active cooling function

Abstract

The application provides a side wall cabin type while-drilling measurement and control system with an active cooling function, a downhole generator short section is connected with a while-drilling measurement and control system short section, a driving turbine rotatingly installed in the downhole generator short section, the driving turbine is connected with a circumferential transmission magnetic pole through a transmission mechanism, the circumferential transmission magnetic pole is rotatingly installed in the side wall of the while-drilling measurement and control system short section, an active cooling device, a while-drilling measurement and control circuit and a sensor are all installed in the side wall of the while-drilling measurement and control system short section, the top end of the active cooling device is adjacent to the circumferential transmission magnetic pole, the bottom end of the active cooling device is adjacent to the while-drilling measurement and control circuit and the sensor, a heat transfer device is sleeved on the top of the active cooling device, the outer side wall of the heat transfer device is connected with the side wall of the while-drilling measurement and control system short section, and a heat preservation device is sleeved on the bottom of the active cooling device. The active cooling device generates cold energy to balance the heat transferred to the while-drilling measurement and control system from a high-temperature environment and the self-generated heat generated in the working process of the while-drilling measurement and control system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of drilling technology, and particularly relates to a side wall cabin type drilling while measuring and controlling system with active cooling function. BACKGROUND

[0002] The formation of the oil and gas well bore is generated by the rotation of the drill string or the downhole power drill driving the drill bit to cut the underground rock. In order to ensure safe and efficient drilling operation, it is necessary to continuously detect the drilling pressure, torque, annular water eye pressure, temperature and other engineering parameters and resistivity, porosity, drilling gamma and other geological parameters near the drill bit while drilling. In order to realize the acquisition of these drilling engineering parameters and geological parameters, various parameter measurement circuits or sensors need to be installed at the bottom of the drill string near the drill bit.

[0003] With the increase of energy demand, the exploration and development of deep and ultra-deep oil and gas resources has become an important field of increasing reserves and production. However, during the drilling process to the deep and ultra-deep layer, the high temperature of the formation exceeds the upper limit of the temperature of various components or sensors of the drilling while measuring and controlling system, which causes failure or even failure. Generally speaking, there are two modes of high temperature induced failure of various components or sensors of the drilling while measuring and controlling system: 1) when the components or sensors work, the thermal stress generated by the self-temperature rise reduces the service life; 2) when the deep and ultra-deep environment temperature reaches a critical value, the various components or sensors of the drilling while measuring and controlling system will be damaged. The failure caused by overheating not only increases the cost of replacing the failed components or sensors, but also lacks electronic components resistant to high temperature, which cannot meet the needs of the exploration and development of deeper oil and gas resources.

[0004] At present, the high temperature resistance technology of oil and gas well downhole tools has been listed as a key core technology to break through the efficient exploration and development of deep and ultra-deep oil and gas resources. Therefore, it is important and urgent to overcome the related core module technology of high temperature resistant drilling while measuring and controlling system. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a side wall cabin type drilling while measuring and controlling system with active cooling function in view of the shortcomings of the prior art.

[0006] The technical scheme for solving the above technical problems is as follows: a side wall cabin type while-drilling measurement and control system with active cooling function, comprising: a downhole generator short section, a while-drilling measurement and control system short section, a driving turbine, a transmission mechanism, at least one circumferential transmission magnetic pole, at least one active cooling device, a heat transfer device, at least one while-drilling measurement and control circuit and a sensor, and a heat preservation device, wherein the downhole generator short section is connected with the while-drilling measurement and control system short section, the driving turbine is rotatably installed in the downhole generator short section, the driving turbine is connected with the circumferential transmission magnetic pole through the transmission mechanism, the circumferential transmission magnetic pole is rotatably installed in the side wall of the while-drilling measurement and control system short section, the active cooling device, the while-drilling measurement and control circuit and the sensor are all installed in the side wall of the while-drilling measurement and control system short section, the top end of the active cooling device is adjacent to the circumferential transmission magnetic pole, the bottom end of the active cooling device is adjacent to the while-drilling measurement and control circuit and the sensor, the heat transfer device is sleeved on the top of the active cooling device, the heat preservation device is sleeved on the bottom of the active cooling device, the bottom end of the circumferential transmission magnetic pole is circumferentially provided with a plurality of permanent magnets, and the top end of the active cooling device is circumferentially provided with a circumferential magnet.

[0007] The beneficial effects of the technical scheme are as follows: the active cooling device adopts a motion driving mode of turbine rotation, instead of an electric driving mode, to realize the high-temperature resistance of the active cooling device itself. The cold quantity generated by the self-provided active cooling device is used to balance the heat transferred to the while-drilling measurement and control system from the high-temperature environment and the self-generated heat in the working process of the while-drilling measurement and control system, so as to reduce the working temperature of the while-drilling measurement and control system in the side wall cabin to below the environmental temperature that can be withstood by the while-drilling measurement and control system, and improve the temperature application range of the while-drilling measurement and control system. The problem that various components or sensors of the existing while-drilling measurement and control system are not resistant to high temperature is solved.

[0008] Further, the transmission mechanism comprises: a rotating shaft, a driving gear, at least one driven gear, and at least one transmission shaft, the rotating shaft is rotatably installed in the downhole generator short section and the while-drilling measurement and control system short section, the driving turbine is sleeved on the top of the rotating shaft, the driving gear is sleeved on the bottom of the rotating shaft, the driving gear is rotatably installed in the while-drilling measurement and control system short section, the transmission shaft is rotatably installed in the side wall of the while-drilling measurement and control system short section, the driven gear is sleeved on the top of the transmission shaft, the circumferential transmission magnetic pole is sleeved on the bottom of the transmission shaft, and the driven gear is engaged with the driving gear.

[0009] The beneficial effect of the further technical scheme is that when the drilling fluid flows, the driving turbine is scoured, the driving turbine drives the rotating shaft to rotate, the rotating shaft drives the fixed end driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the circumferential transmission magnetic pole to rotate through the transmission shaft, and the internal magnet of the driving cooling device is driven to rotate through magnetic force, thereby driving the driving cooling device to work and generating the required cold energy for cooling.

[0010] Further, the rotating shaft is a hollow structure, the rotating shaft is internally provided with a wire tube, the rotating shaft is rotationally sleeved on the outside of the wire tube, and the side wall of the drilling while measuring and controlling system short section is provided with a wire hole and a wire passage.

[0011] The beneficial effect of the further technical scheme is that when the driving turbine rotates, the rotating shaft is driven to rotate, but the wire tube remains stationary. The wire passing mode of the drilling while measuring and controlling system is that the connecting line from the generator passes through the wire tube and then enters the drilling while measuring and controlling system through the wire hole and the wire passage of the drilling while measuring and controlling system short section.

[0012] Further, the downhole generator short section is provided with a guide vane and pure electrical iron, the guide vane is sleeved on the rotating shaft, the guide vane is located above the driving turbine, the pure electrical iron is sleeved on the outside of the rotating shaft, the pure electrical iron is mounted on the inner side wall of the downhole generator short section, and the pure electrical iron is located below the driving turbine.

[0013] The beneficial effect of the further technical scheme is that during drilling, when the drilling fluid flows in the center water hole of the drilling tool, the guide vane is used to change the direction and scour the driving turbine. The pure electrical iron and the rotating shaft form a downhole generator, the rotating shaft and the pure electrical iron generate an induced current, the downhole generator is used to provide electrical energy for each component or sensor of the drilling while measuring and controlling system, to realize the functions of downhole information collection, storage and conversion, and is used to provide electrical energy for the pulse actuator, to drive the opening and closing of the pulse valve core and the pulse valve seat, to send a pulse signal to the ground, to perform data transmission, and to realize the collection and transmission of downhole data. The downhole generator short section is used to support each component of the downhole generator, and the thread on the two ends of the short section is used to dock with the pulse support short section and the drilling while measuring and controlling system short section.

[0014] Further, the driving cooling device comprises a driving cooling device hot end, a driving cooling device connecting pipeline and a driving cooling device cold end, the driving cooling device hot end is connected with the driving cooling device cold end through the driving cooling device connecting pipeline, the circumferential transmission magnetic pole is adjacent to the driving cooling device hot end, the driving cooling device cold end is adjacent to the drilling while measuring and controlling circuit and the sensor, the heat transfer device is sleeved on the outside of the driving cooling device hot end, and the heat preservation device is sleeved on the outside of the driving cooling device cold end.

[0015] The beneficial effect of the further technical scheme is that the cold energy is transmitted to the while-drilling measurement and control circuit and the sensor through the cold end of the active cooling device, thereby reducing the temperature of the circuit or the sensor.

[0016] Further, one end of the downhole generator short section away from the while-drilling measurement and control system short section is connected with a pulser support short section, and the pulser support short section is provided with a pulser.

[0017] The beneficial effect of the further technical scheme is that the pulser support short section is used for supporting the pulser, and the thread at both ends of the short section is used for connecting with the upper and lower drilling tools. The pulser is used for converting the collected downhole data into a pulse signal and sending the pulse signal to the ground for data transmission.

[0018] Further, the pulser comprises a pulser valve seat, a pulser valve core, an actuator dynamic seal, an actuator motor, a centralizer, and a communication connector. The pulser valve seat and the centralizer are installed on the inner wall of the pulser support short section, the actuator motor is installed in the centralizer, the communication connector is connected with the actuator motor, the actuator motor is connected with one end of the pulser valve core, the actuator dynamic seal is installed at the connection position of the actuator motor and the pulser valve core, and the other end of the pulser valve core is slidably installed in the pulser valve seat.

[0019] The beneficial effect of the further technical scheme is that the pulser support short section is used for supporting the pulser, and the thread at both ends of the short section is used for connecting with the upper and lower drilling tools. The pulser is used for converting the collected downhole data into a pulse signal and sending the pulse signal to the ground for data transmission.

[0020] Further, the side wall of the while-drilling measurement and control system short section is provided with an active cooling device cabin cover plate and a circuit cabin cover plate. The top of the active cooling device is located at the position of the active cooling device cabin cover plate, and the bottom of the active cooling device is located at the position of the circuit cabin cover plate.

[0021] The beneficial effect of the further technical scheme is that the while-drilling measurement and control system short section is used for supporting the while-drilling measurement and control system and the active cooling device, and the thread at both ends of the short section is used for connecting with the upper and lower drilling tools. The heat transfer device is arranged between the hot end of the active cooling device and the while-drilling measurement and control system short section and the active cooling device cabin cover plate, so as to transmit the heat gathered at the hot end to the while-drilling measurement and control system short section and the active cooling device cabin cover plate, and then the heat is carried away by the circulating drilling fluid. The heat insulation device is arranged between the cold end of the active cooling device and the while-drilling measurement and control system short section and the circuit cabin cover plate, so as to isolate the cold energy on the while-drilling measurement and control system from the while-drilling measurement and control system short section and the circuit cabin cover plate, thereby forming a stable temperature gradient.

[0022] Further, the heat transfer device is made of copper foil or aluminum foil, and the heat preservation device is made of aerogel.

[0023] The beneficial effects of the further technical scheme are: the heat transfer device is made of copper foil or aluminum foil, which is high in heat conductivity and helps heat transfer quickly, and the foil is flexible and can eliminate air gap and reduce thermal resistance; the heat preservation device is made of aerogel, which is high in heat insulation and has flexibility and can reduce shock during drilling.

[0024] The advantages of the additional aspects of the present application will be partially given in the following description, partially become obvious from the following description, or be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 Structure schematic view of the side wall cabin type drilling measurement and control system with active cooling function provided by the embodiment of the present application.

[0026] Figure 2 Structure schematic view of the pulser support short section provided by the embodiment of the present application.

[0027] Figure 3 Structure schematic view of the downhole generator short section provided by the embodiment of the present application.

[0028] Figure 4 Structure schematic view of the drilling measurement and control system short section provided by the embodiment of the present application.

[0029] Figure 5 Structure schematic view of the downhole generator short section provided by the embodiment of the present application. Figure 4 Structure schematic view of the downhole generator short section provided by the embodiment of the present application.

[0030] Figure 6 Structure schematic view of the active cooling device provided by the embodiment of the present application.

[0031] Figure 7 Structure schematic view of the side wall cabin type drilling measurement and control system with active cooling function provided by the embodiment of the present application.

[0032] Reference numerals: 1. Pulse generator support sub; 2. Pulse generator; 3. Downhole generator; 4. Downhole generator sub; 5. Drilling monitoring and control system with active cooling device; 6. Drilling monitoring and control system sub; 7. Drilling fluid; 8. Pulse generator valve seat; 9. Pulse generator valve core; 10. Actuator dynamic seal; 11. Actuator motor; 12. Centralizer; 13. Communication connector; 14. Guide impeller; 15. Drive turbine; 16. Electrical pure iron; 17. Rotating shaft; 18. Cable guide tube; 19. Drive gear; 20. Driven gear; 21. Cable guide hole; 22. Drive shaft; 23. 24. Circumferential drive magnetic poles; 25. Active cooling device; 26. Heat transfer device; 27. Active cooling device cabin cover; 28. Active cooling device connecting pipe hole; 29. ​​Circuit cabin cover; 30. Drilling measurement and control circuit and sensor; 31. Insulation device; 32. Wiring passage; 33. Active cooling device hot end; 34. Active cooling device connecting pipe; 35. Active cooling device one; 36. Active cooling device two; 37. Drilling measurement and control circuit and sensor one; 38. Drilling measurement and control circuit and sensor two; 39. Transmission mechanism. Detailed Implementation

[0033] 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.

[0034] like Figures 1 to 7 As shown, this embodiment of the invention provides a sidewall-mounted measurement and control system with active cooling function, including: a downhole generator sub 4, a measurement and control system sub 6, a drive turbine 15, a transmission mechanism 39, at least one circumferential drive magnetic pole 23, at least one active cooling device 24, a heat transfer device 25, at least one measurement and control circuit, a sensor 29, and a heat preservation device 30. The downhole generator sub 4 is connected to the measurement and control system sub 6. The drive turbine 15 is rotatably mounted in the downhole generator sub 4. The drive turbine 15 is connected to the circumferential drive magnetic pole 23 through the transmission mechanism 39. 3. The active cooling device 24, the drilling measurement and control circuit, and the sensor 29 are all rotatably installed in the side wall of the drilling measurement and control system sub 6. The top end of the active cooling device 24 is adjacent to the circumferential drive magnetic pole 23, and the bottom end of the active cooling device 24 is adjacent to the drilling measurement and control circuit and the sensor 29. The heat transfer device 25 is sleeved on the top of the active cooling device 24, and the heat preservation device 30 is sleeved on the bottom of the active cooling device 24. The bottom end of the circumferential drive magnetic pole 23 is provided with multiple permanent magnets, and the top end of the active cooling device 24 is provided with a circumferential magnet.

[0035] The beneficial effects of the technical scheme of the present application are: the active cooling device adopts a motion driving mode of turbine rotation instead of an electric driving mode to realize the high-temperature resistance of the active cooling device itself; the cold energy generated by the self-provided active cooling device is used to balance the heat transferred from the high-temperature environment to the measurement and control system while working and the self-generated heat generated during the working process of the measurement and control system, so that the working temperature of the measurement and control system in the side wall cabin is reduced to below the environmental temperature that can be withstood by the measurement and control system, and the temperature application range of the measurement and control system is improved. The problem that various components or sensors of the existing measurement and control system while drilling cannot withstand high temperature is solved.

[0036] Among them, the pulser support short section 1, the downhole generator short section 4 and the measurement and control system while drilling short section 6 circulate the drilling fluid 7. The measurement and control system while drilling with active cooling device 5 can be the active cooling device 24 and the measurement and control circuit and sensor while drilling. The arrows in the figure represent the flow direction and flow trajectory of the drilling fluid 7.

[0037] The bottom end of the circumferential transmission magnetic pole 23 is alternately provided with permanent magnets with different polarities in the circumferential direction, and the top end of the active cooling device is correspondingly provided with circumferential magnets.

[0038] As an alternative to the above-mentioned side wall cabin type measurement and control system while drilling with active cooling function, the measurement and control system while drilling short section 6 can be provided with multiple active cooling devices and multiple measurement and control circuits and sensors while drilling, and the multiple active cooling devices can be active cooling device one 35 and active cooling device two 36, and the multiple measurement and control circuits and sensors while drilling can be measurement and control circuit and sensor one 37 and measurement and control circuit and sensor two 38.

[0039] In order to solve the problem that various components or sensors of the existing measurement and control system while drilling cannot withstand high temperature, a side wall cabin type measurement and control system while drilling with active cooling function is provided. The system generates cold energy by the self-provided active cooling device to balance the heat transferred from the high-temperature environment to the measurement and control system while drilling and the self-generated heat generated during the working process of the measurement and control system while drilling, so that the working temperature of the measurement and control system while drilling in the side wall cabin is reduced to below the environmental temperature that can be withstood by the measurement and control system while drilling, and the temperature application range of the measurement and control system while drilling is improved.

[0040] The side wall cabin type measurement and control system while drilling with active cooling function comprises:

[0041] A pulser support short section, the inside of the pulser support short section is used to support the pulser, and the thread on both ends of the pulser support short section is used to butt joint with the upper and lower drilling tools;

[0042] A pulser, which is used to convert the collected downhole data into a pulse signal and send it to the ground for data transmission;

[0043] The downhole generator is used for providing electric energy for each component or sensor of the drilling measurement and control system, and realizing functions such as information collection, storage and conversion in the downhole; and is also used for providing electric energy for the pulse implement to generate pulse signals carrying information.

[0044] The downhole generator short section is used for supporting each component of the downhole generator, and the thread on both ends of the downhole generator short section is used for being connected with the pulse support short section and the drilling measurement and control system short section.

[0045] The drilling measurement and control system with active cooling device can be the active cooling device, which can provide cold energy for the drilling measurement and control system to form the high-temperature-resistant drilling measurement and control system.

[0046] The drilling measurement and control system short section is used for supporting the drilling measurement and control system and the active cooling device, and the thread on both ends of the drilling measurement and control system short section is used for being connected with the upper and lower drilling tools.

[0047] The drilling fluid provides energy for the generator providing electric energy for the drilling measurement and control system, and provides energy required for the operation of the active cooling device.

[0048] Preferably, the active cooling device and each component or sensor of the drilling measurement and control system are located in the short section side wall cabin; the cold energy generated by the active cooling device during operation can be used for cooling each component or sensor of the drilling measurement and control system to improve the temperature range of the drilling measurement and control system.

[0049] Preferably, according to the structure size of the tool cabin of the drilling instrument, one set of active cooling device and drilling measurement and control system can be arranged, or multiple sets of active cooling device and drilling measurement and control system can be arranged, so as to improve the high-temperature resistance of one set or multiple sets of drilling measurement and control system.

[0050] Preferably, one set of active cooling device power device adopts one driving gear to drive one driven gear; multiple sets of active cooling device power device adopt one driving gear to drive multiple driven gears; and one driving gear and multiple driven gears can adopt planetary gear structure for transmission.

[0051] Preferably, the active cooling device driving mechanism adopts a circumferential transmission magnetic pole. The driving mechanism realizes the process as follows: when the drilling fluid flows, the driving turbine is washed, the driving turbine drives the rotating shaft to rotate, the rotating shaft drives the fixed end driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the circumferential transmission magnetic pole to rotate through the transmission shaft, the internal magnet of the active cooling device is driven to rotate through the magnetic force, so as to drive the active cooling device to work and generate the cold energy required for cooling.

[0052] Preferably, each component or sensor of the while-drilling measurement and control system can be used to measure geological parameters and engineering parameters, thereby providing real-time data for drilling engineers to support safe and efficient drilling operations.

[0053] Preferably, the active cooling device has three parts: an active cooling device hot end, an active cooling device connecting pipeline, and an active cooling device cold end. The active cooling device connecting pipeline has a flexible characteristic, and can adjust the spatial layout of the active cooling device cold end while fixing the active cooling device hot end according to actual needs, to meet engineering requirements.

[0054] Preferably, the driving turbine has a fixed rotating shaft, and the rotating shaft has a hollow structure and is internally fixed with a wire pipe; when the driving turbine rotates, the rotating shaft rotates, but the wire pipe remains stationary. The wire pipe is used for the wire passing mode of the while-drilling measurement and control system, and the connecting wire from the downhole generator passes through the wire pipe, and then enters the while-drilling measurement and control system through the wire passing hole and the wire passing channel of the while-drilling measurement and control system joint.

[0055] Preferably, a heat transfer device is arranged between the active cooling device hot end and the while-drilling measurement and control system joint and the active cooling device cabin cover plate, to transfer the heat gathered in the hot end to the while-drilling measurement and control system joint and the active cooling device cabin cover plate, and then the circulating drilling fluid carries away the heat; a heat preservation device is arranged between the active cooling device cold end and the while-drilling measurement and control system joint and the circuit cabin cover plate, to isolate the cold on the while-drilling measurement and control system from the while-drilling measurement and control system joint and the circuit cabin cover plate, thereby forming a stable temperature gradient.

[0056] Preferably, the heat transfer device can be made by winding copper foil or aluminum foil layer by layer, which on the one hand has a high thermal conductivity to help rapid heat transfer, and on the other hand the flexibility of the foil material can eliminate the existence of air gap and reduce thermal resistance. The heat preservation device can be wrapped with aerogel, which on the one hand has a high thermal insulation coefficient to help heat preservation, and on the other hand has flexibility to play a shock-absorbing role during drilling.

[0057] Preferably, the active cooling device adopts a turbine rotation motion driving mode, rather than an electric driving mode, to realize the high-temperature resistance of the active cooling device itself.

[0058] During drilling in high-temperature and ultra-high-temperature formations, the cold generated by the active cooling device is used to balance the heat transferred to the while-drilling measurement and control system from the high-temperature environment and the self-generated heat generated during the operation of the while-drilling measurement and control system, thereby reducing the working temperature of the while-drilling measurement and control system to below the environmental temperature that the while-drilling measurement and control system can withstand, and improving the temperature application range of the while-drilling measurement and control system.

[0059] As shown in FIG. 1, the active cooling device is arranged in the while-drilling measurement and control system joint. Figures 1 to 7As shown, further, the transmission mechanism 39 comprises: a rotating shaft 17, a driving gear 19, at least one driven gear 20, at least one transmission shaft 22, the rotating shaft 17 is rotatably installed in the downhole generator short section 4 and the MWD short section 6, the driving turbine 15 is sleeved on the top of the rotating shaft 17, the driving gear 19 is sleeved on the bottom of the rotating shaft 17, the driving gear 19 is rotatably installed in the MWD short section 6, the transmission shaft 22 is rotatably installed in the side wall of the MWD short section 6, the driven gear 20 is sleeved on the top of the transmission shaft 22, the circumferential transmission magnetic pole 23 is sleeved on the bottom of the transmission shaft 22, and the driven gear 20 is engaged with the driving gear 19.

[0060] The beneficial effect of the above further technical scheme is that when the drilling fluid flows, the driving turbine is washed, the driving turbine drives the rotating shaft to rotate, the rotating shaft drives the fixed-end driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the circumferential transmission magnetic pole to rotate through the transmission shaft, and the internal magnet of the active cooling device is driven to rotate through magnetic force, so that the active cooling device works and generates the required cold energy for cooling.

[0061] As shown in the figure, Figures 1 to 7 Further, the rotating shaft 17 is of a hollow structure, the rotating shaft 17 is internally provided with a wire tube 18, the rotating shaft 17 is rotatably sleeved on the outside of the wire tube 18, and the side wall of the MWD short section 6 is provided with a wire hole 21 and a wire passage 31.

[0062] The beneficial effect of the above further technical scheme is that when the driving turbine rotates, the rotating shaft is driven to rotate, but the wire tube remains stationary. The MWD system is wired in the following way: the connecting line from the generator passes through the wire tube, and then enters the MWD system through the wire hole and the wire passage of the MWD short section.

[0063] As shown in the figure, Figures 1 to 7 Further, the downhole generator short section 4 is provided with a guide vane 14 and an electrical pure iron 16, the guide vane 14 is sleeved on the rotating shaft 17, the guide vane 14 is located above the driving turbine 15, the electrical pure iron 16 is sleeved on the outside of the rotating shaft 17, the electrical pure iron 16 is installed on the inner side wall of the downhole generator short section 4, and the electrical pure iron 16 is located below the driving turbine 15.

[0064] The beneficial effect of the further technical scheme is that, in the drilling process, the drilling fluid flows through the flow guide impeller when flowing in the center water hole of the drilling tool, changes the direction and then washes and drives the turbine. The electrically pure iron and the rotating shaft form a downhole generator. The rotating shaft and the electrically pure iron generate an induced current. The downhole generator is used to provide power for each component or sensor of the measurement and control system while drilling, to realize the functions of downhole information collection, storage, conversion and the like. On the other hand, the downhole generator is used to provide power for the pulse actuator mechanism, to drive the opening and closing of the pulse valve core and the pulse valve seat, to send a pulse signal to the ground, to perform data transmission, and to realize the collection and transmission of downhole data. The downhole generator short section is used to support the components of the downhole generator. The thread on both ends of the short section is used to dock with the pulse support short section and the measurement and control system short section.

[0065] The downhole generator 3 can be the electrically pure iron 16 and the rotating shaft 17.

[0066] As shown in Figures 1 to 7 Further, the active cooling device 24 includes an active cooling device hot end 32, an active cooling device connecting pipeline 33 and an active cooling device cold end 34. The active cooling device hot end 32 is connected with the active cooling device cold end 34 through the active cooling device connecting pipeline 33. The circumferential transmission magnetic pole 23 is adjacent to the active cooling device hot end 32. The active cooling device cold end 34 is adjacent to the measurement and control circuit while drilling and the sensor 29. The heat transfer device 25 is sleeved on the outside of the active cooling device hot end 32. The heat preservation device 30 is sleeved on the outside of the active cooling device cold end 34.

[0067] The beneficial effect of the further technical scheme is that the cold energy is transmitted to the measurement and control circuit while drilling and the sensor through the active cooling device cold end, so as to reduce the temperature of the circuit or the sensor.

[0068] The top end of the active cooling device hot end 32 is circumferentially provided with a circumferential magnet.

[0069] As shown in Figures 1 to 7 Further, the one end of the downhole generator short section 4 away from the measurement and control system short section 6 is connected with the pulse support short section 1. The pulse support short section 1 is provided with the pulse 2.

[0070] The beneficial effect of the further technical scheme is that the inside of the pulse support short section is used to support the pulse. The thread on both ends of the short section is used to dock with the upper and lower drilling tools. The pulse is used to convert the collected downhole data into a pulse signal and send it to the ground, to perform data transmission.

[0071] As shown in Figures 1 to 7As shown, further, the pulser 2 comprises: a pulser valve seat 8, a pulser valve core 9, an actuator dynamic seal 10, an actuator motor 11, a centralizer 12, and a communication connector 13, the pulser valve seat 8 and the centralizer 12 are installed on the inner side wall of the pulser support short section 1, the actuator motor 11 is installed in the centralizer 12, the communication connector 13 is connected with the actuator motor 11, the actuator motor 11 is connected with one end of the pulser valve core 9, the actuator dynamic seal 10 is installed at the connection position of the actuator motor 11 and the pulser valve core 9, and the other end of the pulser valve core 9 is slidingly installed in the pulser valve seat 8.

[0072] The beneficial effects of the above further technical solutions are: the pulser support short section is used for supporting the pulser, and the thread at both ends of the short section is used for connecting with the upper and lower drilling tools. The pulser is used for converting the collected downhole data into a pulse signal and transmitting the data to the ground.

[0073] As shown in the figure, Figures 1 to 7 Further, the side wall of the MWD system short section 6 is provided with an active cooling device cabin cover plate 26 and a circuit cabin cover plate 28, the top of the active cooling device 24 is located at the position of the active cooling device cabin cover plate 26, and the bottom of the active cooling device 24 is located at the position of the circuit cabin cover plate 28.

[0074] The beneficial effects of the above further technical solutions are: the MWD system short section is used for supporting the MWD system and the active cooling device, and the thread at both ends of the short section is used for connecting with the upper and lower drilling tools. The heat transfer device is arranged between the hot end of the active cooling device and the MWD system short section and the active cooling device cabin cover plate, the heat gathered at the hot end is transferred to the MWD system short section and the active cooling device cabin cover plate, and then carried away by the circulating drilling fluid; the heat insulation device is arranged between the cold end of the active cooling device and the MWD system short section and the circuit cabin cover plate, the cold heat on the MWD system is insulated from the MWD system short section and the circuit cabin cover plate, so as to form a stable temperature gradient.

[0075] The side wall of the MWD system short section 6 is provided with an active cooling device connecting pipe hole 27, and the active cooling device connecting pipeline 33 is installed in the active cooling device connecting pipe hole 27.

[0076] As shown in the figure, Figures 1 to 7 Further, the heat transfer device 25 is made of copper foil or aluminum foil, and the heat insulation device 30 is made of aerogel.

[0077] The beneficial effects of the further technical scheme are as follows: the heat transfer device can be made by winding copper foil or aluminum foil layer by layer, on the one hand, the high thermal conductivity of the material helps to quickly transfer heat, on the other hand, the flexibility of the foil can eliminate the existence of air gap and reduce thermal resistance. The heat preservation device is wrapped with aerogel, on the one hand, the high thermal insulation coefficient of the material is conducive to heat preservation, on the other hand, the material has toughness and can play a shock-absorbing role during drilling.

[0078] The side wall cabin type drilling while measuring and controlling system with active cooling function can be a side wall cabin type high temperature resistant drilling while measuring and controlling system with active cooling function, comprising: a pulser support short section 1, a pulser 2, a downhole generator 3, a downhole generator short section 4, a drilling while measuring and controlling system with active cooling device 5, a drilling while measuring and controlling system short section 6, and drilling fluid 7.

[0079] The active cooling device and each component and / or sensor of the drilling while measuring and controlling system are located in the short section side wall cabin; the cold produced by the active cooling device during operation can be used for cooling each component or sensor of the drilling while measuring and controlling system, so as to improve the applicable temperature range of the drilling while measuring and controlling system.

[0080] According to the structure and size of the tool cabin of the drilling instrument, one set of active cooling device and drilling while measuring and controlling system can be arranged, or multiple sets of active cooling device and drilling while measuring and controlling system can be arranged, so as to improve the high temperature resistance of one or multiple sets of drilling while measuring and controlling system. The drilling while measuring and controlling system can be a drilling while measuring and controlling circuit and a sensor.

[0081] The power device of the one set of active cooling device is realized by using one driving gear 19 to drive one driven gear 20; the power device of the multiple sets of active cooling device is realized by using one driving gear to drive multiple driven gears; the one driving gear and the multiple driven gears can be transmitted by using a planetary gear structure.

[0082] The driving mechanism of the active cooling device is realized by using a circumferential transmission magnetic pole 23. The realization process of the driving mechanism is as follows: when the drilling fluid flows, the driving turbine 15 is washed, the driving turbine 15 drives the rotating shaft 17 to rotate, the rotating shaft 17 drives the fixed end driving gear 19 to rotate, the driving gear 19 drives the driven gear 20 to rotate, the driven gear 20 drives the circumferential transmission magnetic pole 23 to rotate through the transmission shaft 22, the internal magnet of the active cooling device 24 is driven to rotate through the magnetic force, so as to drive the active cooling device 24 to work and generate the required cold for cooling.

[0083] The components or sensors of the drilling while measuring and controlling system can be used for measuring geological parameters or engineering parameters, so as to provide real-time data for drilling engineers to support safe and efficient drilling construction.

[0084] The active cooling device 24 is composed of three parts: an active cooling device hot end 32, an active cooling device connecting pipeline 33 and an active cooling device cold end 34.

[0085] The driving turbine 15 is fixed at the center of a rotating shaft; the rotating shaft 17 is a hollow structure, and the wire tube 18 is fixed inside; when the driving turbine 15 rotates, the rotating shaft 17 is driven to rotate, but the wire tube 18 remains stationary; the wire tube 18 is used for the wire passing mode of the drilling measurement and control system; the connecting wire from the downhole generator 3 passes through the wire tube 18, and then enters the drilling measurement and control system through the wire passing hole 21 and the wire passing channel 31 of the drilling measurement and control system short section 6.

[0086] The active cooling device hot end 32 is provided with a heat transfer device 25 between the drilling measurement and control system short section 6 and the active cooling device cabin cover plate 26, so as to transfer the heat gathered at the hot end to the drilling measurement and control system short section 6 and the active cooling device cabin cover plate 26, and then the heat is carried away by the circulating drilling fluid; the active cooling device cold end 34 is provided with a heat preservation device 30 between the drilling measurement and control system short section 6 and the circuit cabin cover plate 28, so as to isolate the cold on the drilling measurement and control system from the drilling measurement and control system short section 6 and the circuit cabin cover plate 28, thereby forming a stable temperature gradient.

[0087] The heat transfer device 25 can be made by winding copper foil or aluminum foil layer by layer; on the one hand, the high thermal conductivity of such material helps to quickly transfer heat, and on the other hand, the flexibility of the foil material can eliminate the existence of air gap and reduce thermal resistance. The heat preservation device 30 can be wrapped with aerogel; on the one hand, the high thermal insulation coefficient of such material is conducive to heat preservation, and on the other hand, such material has toughness, which can play a shock-absorbing role in the drilling process.

[0088] The active cooling device adopts a motion driving mode of turbine rotation, rather than an electric driving mode, so as to realize the high temperature resistance of the active cooling device itself.

[0089] The working principle of the embodiment will be described in detail as follows:

[0090] In the drilling process, the drilling fluid 7 flows through the flow guide impeller 14 when flowing through the center water hole of the drilling tool, changes direction, and then washes the driving turbine 15, which drives the rotating shaft 17 to rotate, on the one hand, the rotating shaft 17 interacts with the pure iron 16 to generate an induced current. The current provides power for the while-drilling measurement and control circuit and the sensor 29, so that it collects, stores, and converts various downhole data; at the same time, the current provides power for the pulser execution motor 11, drives the pulser spool 9 and the pulser valve seat 8 to open and close, sends pulse signals to the ground, and transmits data. The above process realizes the collection and transmission of downhole data; on the other hand, the rotating shaft 17 is fixed with a driving gear 19, and through this set of energy conversion device, the hydraulic energy of the drilling fluid 7 is converted into the mechanical energy of the driving gear 19. The driving gear 19 meshes with the driven gear 20, drives the transmission shaft 22 to rotate, and then the circumferential transmission magnetic pole 23 fixed on the transmission shaft 22 also rotates. Further, under the action of magnetic force, the circumferential transmission magnetic pole 23 drives the active cooling device 24 to start work and generate cold energy. The cold energy is transmitted to the while-drilling measurement and control circuit and the sensor 29 through the cold end 34 of the active cooling device, thereby reducing the temperature of the circuit or the sensor. At the same time, the heat insulation device 30 thermally insulates the while-drilling measurement and control circuit and the sensor 29 from the circuit cabin cover plate 28 and the while-drilling measurement and control system short section 6, so as to ensure that the temperature of the while-drilling measurement and control circuit and the sensor 29 is lower than the ambient temperature; the heat generated by the hot end 32 of the active cooling device is transmitted to the active cooling device cabin cover plate 26 and the while-drilling measurement and control system short section 6 through the heat transfer device 25, and then carried away by the circulating drilling fluid 7. At this point, under the combined action of the drilling fluid 7, the active cooling device 24, the heat transfer device 25, the while-drilling measurement and control circuit and the sensor 29, the heat insulation device 30 and other devices, the cold energy generated by the active cooling device 24 is used to balance the heat transferred to the while-drilling measurement and control system in the high temperature environment and the self-generated heat generated in the working process of the while-drilling measurement and control system, so as to reduce the working temperature of the while-drilling measurement and control system to below the environmental temperature that the while-drilling measurement and control system can withstand, improve the temperature application range of the while-drilling measurement and control system, and then form a high-temperature-resistant while-drilling measurement and control system and method, improve the safe and efficient drilling technology level of deep wells and ultra-deep wells, and realize efficient exploration and benefit development of oil and gas resources.

[0091] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A sidewall-type drilling monitoring and control system with active cooling function, characterized in that, include: The system comprises a downhole generator subsection (4), a drilling measurement and control system subsection (6), a drive turbine (15), a transmission mechanism, at least one circumferential drive magnetic pole (23), at least one active cooling device (24), a heat transfer device (25), at least one drilling measurement and control circuit, and sensors and a heat preservation device (30). The downhole generator subsection (4) is connected to the drilling measurement and control system subsection (6). The drive turbine (15) is rotatably installed in the downhole generator subsection (4). The drive turbine (15) is connected to the circumferential drive magnetic pole (23) through the transmission mechanism. The circumferential drive magnetic pole (23) is rotatably installed in the drilling measurement and control system subsection (6). In the side wall of the drilling control system, the active cooling device (24), the drilling measurement and control circuit and the sensor are all installed in the side wall of the drilling measurement and control system section (6). The top of the active cooling device (24) is adjacent to the circumferential drive magnetic pole (23), the bottom of the active cooling device (24) is adjacent to the drilling measurement and control circuit and the sensor, the heat transfer device (25) is sleeved on the top of the active cooling device (24), the heat preservation device (30) is sleeved on the bottom of the active cooling device (24), the bottom of the circumferential drive magnetic pole (23) is provided with multiple permanent magnets in the circumferential direction, and the top of the active cooling device (24) is provided with a circumferential magnet in the circumferential direction. The transmission mechanism includes: a rotating shaft (17), a driving gear (19), at least one driven gear (20), and at least one transmission shaft (22). The rotating shaft (17) is rotatably mounted in the downhole generator sub (4) and the drilling measurement and control system sub (6). The drive turbine (15) is sleeved on the top of the rotating shaft (17). The driving gear (19) is sleeved on the bottom of the rotating shaft (17). The driving gear (19) is rotatably mounted in the drilling measurement and control system sub (6). The transmission shaft (22) is rotatably mounted in the side wall of the drilling measurement and control system sub (6). The driven gear (20) is sleeved on the top of the transmission shaft (22). The circumferential transmission magnetic pole (23) is sleeved on the bottom of the transmission shaft (22). The driven gear (20) meshes with the driving gear (19). The active cooling device (24) includes: an active cooling device hot end (32), an active cooling device connecting pipe (33), and an active cooling device cold end (34). The active cooling device hot end (32) is connected to the active cooling device cold end (34) through the active cooling device connecting pipe (33). The circumferential transmission magnetic pole (23) is adjacent to the active cooling device hot end (32). The active cooling device cold end (34) is adjacent to the drilling measurement and control circuit and the sensor. The heat transfer device (25) is sleeved on the outside of the active cooling device hot end (32). The heat preservation device (30) is sleeved on the outside of the active cooling device cold end (34).

2. The sidewall-type drilling monitoring and control system with active cooling function according to claim 1, characterized in that, The rotating shaft (17) is a hollow structure. The rotating shaft (17) is provided with a cable guide tube (18) inside. The rotating shaft (17) is rotatably sleeved on the outside of the cable guide tube (18). The side wall of the drilling measurement and control system sub (6) is provided with a cable guide hole (21) and a cable guide channel (31).

3. The sidewall-type drilling monitoring and control system with active cooling function according to claim 1, characterized in that, The downhole generator subsection (4) is provided with a guide impeller (14) and an electrical pure iron (16). The guide impeller (14) is sleeved on the rotating shaft (17) and is located above the drive turbine (15). The electrical pure iron (16) is sleeved on the outside of the rotating shaft (17) and is installed on the inner wall of the downhole generator subsection (4). The electrical pure iron (16) is located below the drive turbine (15).

4. The sidewall-type drilling monitoring and control system with active cooling function according to claim 1, characterized in that, The end of the downhole generator sub (4) away from the drilling and monitoring system sub (6) is connected to a pulser support sub (1), and a pulser (2) is provided in the pulser support sub (1).

5. A sidewall-type drilling monitoring and control system with active cooling function according to claim 4, characterized in that, The pulse generator (2) includes: a pulse generator valve seat (8), a pulse generator valve core (9), an actuator dynamic seal (10), an actuator motor (11), a stabilizer (12), and a communication connector (13). The pulse generator valve seat (8) and the stabilizer (12) are installed on the inner wall of the pulse generator support section (1). The actuator motor (11) is installed in the stabilizer (12). The communication connector (13) is connected to the actuator motor (11). The actuator motor (11) is connected to one end of the pulse generator valve core (9). The actuator dynamic seal (10) is installed at the connection position between the actuator motor (11) and the pulse generator valve core (9). The other end of the pulse generator valve core (9) is slidably installed in the pulse generator valve seat (8).

6. A sidewall-type drilling monitoring and control system with active cooling function according to claim 1, characterized in that, The side wall of the drilling measurement and control system subsection (6) is provided with an active cooling device compartment cover plate (26) and an electrical compartment cover plate (28). The top of the active cooling device (24) is located at the location of the active cooling device compartment cover plate (26), and the bottom of the active cooling device (24) is located at the location of the electrical compartment cover plate (28).

7. A sidewall-type drilling monitoring and control system with active cooling function according to claim 1, characterized in that, The heat transfer device (25) is made of copper foil or aluminum foil, and the heat insulation device (30) is made of aerogel.

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