CN210808073U - Magnetic pole driving cooling system for circuit system of while-drilling instrument - Google Patents
Magnetic pole driving cooling system for circuit system of while-drilling instrument Download PDFInfo
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- CN210808073U CN210808073U CN201921889061.2U CN201921889061U CN210808073U CN 210808073 U CN210808073 U CN 210808073U CN 201921889061 U CN201921889061 U CN 201921889061U CN 210808073 U CN210808073 U CN 210808073U
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Abstract
The utility model relates to a magnetic pole drive cooling system for following along with boring instrument circuit system. The utility model discloses use the piston to exert the inflation effect to the cycle medium in the cylinder, cause the increase of cycle medium volume, pressure drop to the temperature reduces, makes it have endothermic ability, and then reduces the temperature of the circuit in the pit rather than linking to each other. The expansion cylinder and the compression cylinder are designed according to the reverse Stirling cycle principle, and the turbine rotating device and the magnetic pole driving device jointly act, so that the four refrigeration cycle processes of isothermal compression, isothermal heat release, isothermal expansion and isothermal heat absorption of a cycle working medium are realized, heat on a circuit system is absorbed by the expansion cavity, the heat is transferred to the compression cavity, and is further released to the environment, the temperature of the circuit system is reduced, and the phenomenon of shortening the service life or losing efficacy is avoided.
Description
Technical Field
The utility model belongs to the technical field of the probing, especially, relate to a along with boring instrument circuit system magnetic pole drive cooling system.
Background
The formation of a well bore in an oil and gas well is produced by rotating a drill string to drive a drill bit or a downhole power drill to drive a drill bit to cut an underground formation, the drill bit and downhole tools need to extend several kilometers in the well bore.
During drilling, in order to mitigate the risk factors associated with the drilling operation, it is necessary to obtain as much as possible of various information about the downhole environment, such as: geological parameters, engineering parameters, technological parameters and the like. The drill string bottom near bit attachment is therefore fitted with various measuring tools, such as: measurement while drilling tools (MWD) and logging while drilling tools (LWD). The circuitry on these tools includes various electronic or sensing elements to perform data acquisition, processing, storage, and transmission functions. These downhole circuits themselves generate heat during operation; meanwhile, high temperature in the well during drilling can also affect the drilling process.
Generally, there are two modes of high temperature induced circuitry failure. First, thermal stress on the circuitry reduces its useful life; second, when the temperature reaches a critical value, the circuitry fails and stops operating. Failure due to overheating not only results in increased costs for replacement of the failed circuitry, but also interrupts drilling activities, requires tripping the drill string to replace the circuitry, consumes drilling time and increases drilling costs.
Currently, there are three measures in the petroleum industry to address high temperature resistance of downhole circuits: firstly, screening out components which can be used at high temperature through high-temperature examination; secondly, customizing a high-temperature resistant component; thirdly, invest in huge expenses, independently research and develop the high temperature resistant downhole circuit. The measures are all used for solving the problem from the perspective of passive temperature resistance of the components, and the high-temperature resistance effect is limited; meanwhile, the high-temperature packaging technology of the components is still a bottleneck problem.
Therefore, it is important and highly desirable to provide an efficient and stable active cooling system for downhole circuitry.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the circuit can arouse life-span to shorten or even become invalid under being in high temperature environment in the pit, the utility model provides an instrument circuit system magnetic pole drive cooling system along with boring makes the circuit maintain the temperature range that can bear all the time in the pit, keeps its normal work.
The utility model discloses a can realize through following technical scheme:
a pole drive cooling system for while-drilling instrument circuitry, comprising:
the turbine rotating device is arranged in an eccentric water hole of the drill collar body and connected with a rotating shaft, the rotating shaft is provided with a first expansion cylinder magnetic pole and a first compression cylinder magnetic pole in a staggered mode along the axial direction, and the projection of the first expansion cylinder magnetic pole and the first compression cylinder magnetic pole on the horizontal plane is an included angle which is not zero;
the expansion cylinder is divided into an expansion cavity and an ambient temperature cavity by an expansion piston with a second expansion cylinder magnetic pole, and the expansion piston is driven by the first expansion cylinder magnetic pole to reciprocate through the second expansion cylinder magnetic pole;
the compression cylinder is internally provided with a compression piston with a second compression cylinder magnetic pole and a compression cavity communicated with the environment temperature cavity; the compression piston is driven by the magnetic pole of the first compression cylinder to reciprocate through the magnetic pole of the second compression cylinder.
Preferably, the magnetic pole driving cooling system for the while-drilling instrument circuit system comprises:
the fixed turbine is arranged in the water hole through a fixing device, and the blade of the fixed turbine and the drill collar axially form an included angle which is not zero;
the movable turbine is arranged in the water hole through the rolling support device, and an inclination angle exists between blades of the movable turbine and blades of the fixed turbine; the movable turbine is connected with the rotating shaft.
Preferably, in the above magnetic pole drive cooling system for the while-drilling instrument circuit system, the phase angle of the first expansion cylinder magnetic pole is advanced relative to the phase angle of the first compression cylinder magnetic pole in the rotation direction of the rotating shaft.
Preferably, the above magnetic pole driving cooling system for the while-drilling instrument circuit system is provided with a heat regenerator in the expansion piston.
Preferably, in the magnetic pole driving cooling system for the while-drilling instrument circuit system, the magnetic pole of the second expansion cylinder is in a circular ring structure, and the working medium in the expansion cavity and the working medium in the environment temperature cavity enter and exit the heat regenerator arranged in the expansion piston through the center of the circular ring structure.
Preferably, the magnetic pole driving cooling system for the while-drilling instrument circuit system is characterized in that a separate pipe is arranged in the drill collar body and used for separating the expansion cylinder from the compression cylinder.
Therefore, the advantages of the present invention are as follows: 1. the temperature of the underground circuit is actively reduced by adopting a method that the temperature of the circulating working medium is reduced (lower than the ambient temperature) in the expansion process of the expansion cavity and heat needs to be absorbed from the environment; 2. by turbine rotary device and magnetic pole drive arrangement combined action for compression cylinder and expansion cylinder carry out reciprocal linear motion, thereby transfer circuit system's heat to the compression chamber from the expansion chamber, in the middle of releasing the environment again, can guarantee the continuous cooling to circuit in the pit, improved life-span and the stability of circuit in the pit.
Drawings
FIG. 1 is a diagram of a magnetic pole driven cooling system;
FIG. 2 is a schematic diagram of magnetic pole drive cooling;
FIG. 3 is a schematic view of a compression cylinder;
FIG. 4 is a schematic view of an expansion cylinder
FIG. 5 is a schematic view of the expansion chamber leading the compression chamber phase angle;
FIG. 6 is a state diagram of a piston of the pole drive cooling system;
FIG. 7 is a piston stroke diagram of a magnetic pole driven cooling system;
FIG. 8 is a pressure-volume diagram of the reverse Stirling cycle;
FIG. 9 is an inverse Stirling cycle temperature-entropy diagram;
in the figure: 1: an eccentric water hole; 2: a device for cooling the while-drilling instrument; 3: a circuit hatch; 4: a drill collar body; 5: fixing a turbine; 6: a fixing device; 7: a moving turbine; 8: a rolling support device; 9: a first expansion cylinder magnetic pole; 10: a rotating shaft; 11: a first compression cylinder magnetic pole; 12: the direction of heat discharged by the compression cavity; 13: a compression cylinder; 14: separately arranging pipes; 15: the expansion cavity absorbs the heat direction; 16: circuitry; 17: an expansion cylinder; 18: magnetic lines of force; 19: a compression chamber; 20: compressing the air hole of the air cylinder; 21: a second compression cylinder magnetic pole; 22: compressing the piston return spring; 23: a compression piston; 24: compressing the piston dynamic seal; 25: expansion pistons (built-in regenerators); 26: an ambient temperature chamber; 27: expanding the cylinder air hole; 28: a second expansion cylinder magnetic pole; 29: an expansion piston return spring; 30: an expansion chamber; 31: the expansion piston is in dynamic seal.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.
Example (b):
as shown in fig. 1, the system for cooling a temperature of a magnetic pole of a circuit system of a while-drilling instrument in this embodiment includes: the drill collar comprises a drill collar body 4, a turbine rotating device, a magnetic pole driving device, a compression cylinder 13, an expansion cylinder 17, a separate pipe 14, a circulating working medium and a circuit system;
as shown in fig. 1, the drill collar body 4 is designed to be of a water hole eccentric structure, and a compression cylinder chamber body and an expansion cylinder chamber body are arranged on the side wall of the drill collar body; the compression cylinder cabin body is used for placing a compression cylinder; the expansion cylinder cabin body is used for placing an expansion cylinder; a connecting hole is formed between the compression cylinder chamber body and the expansion cylinder chamber body and is used for the penetration of the separate pipes 14; the drill collar body 4 is made of a non-magnetic material so as to avoid interference with a magnetic pole driving device;
the turbine rotating device comprises a fixed turbine 5 and a movable turbine 7; the fixed turbine 5 is fixed in the water hole through a fixing device; blades on the fixed turbine 5 have a certain inclination angle with the axial direction of a drill string during design and are used for changing the flow direction of drilling fluid; the movable turbine is fixed in the water hole through the rolling support device; the blades on the moving turbine and the blades on the fixed turbine have a certain inclination angle relationship so as to control the hydraulic energy of the drilling fluid for flushing the moving turbine blades and further control the rotating speed of the moving turbine; a rotating shaft is fixed at the lower end of the movable turbine and rotates along with the movable turbine;
the magnetic pole driving device comprises an expansion cylinder magnetic pole and a compression cylinder magnetic pole; the expansion cylinder magnetic pole consists of a first expansion cylinder magnetic pole fixed on the rotating shaft and a second expansion cylinder magnetic pole fixed on the expansion piston; the magnetic pole of the first expansion cylinder periodically applies magnetic force to the magnetic pole of the second expansion cylinder in the process of rotating along with the rotating shaft so as to enable the expansion piston to do periodic reciprocating linear motion in the expansion cylinder;
the compression cylinder magnetic pole consists of a first compression cylinder magnetic pole fixed on the rotating shaft and a second compression cylinder magnetic pole fixed on the compression piston; the magnetic pole of the first compression cylinder periodically applies magnetic force to the magnetic pole of the second compression cylinder in the process of rotating along with the rotating shaft so as to enable the compression piston to do periodic reciprocating linear motion in the compression cylinder; the first expansion cylinder pole is structurally arranged to lead the first compression cylinder pole by a phase angle;
the compression cylinder comprises a compression cavity, a compression cylinder air hole, a second compression cylinder magnetic pole, a compression piston return spring, a compression piston and a compression piston dynamic seal; the compression cavity is separated from the compression piston return spring cavity through the compression piston and the compression piston dynamic seal, so that the circulating working medium cannot enter the compression piston return spring cavity to be compressed; the magnetic pole of the second compression cylinder interacts with the magnetic pole of the first compression cylinder, so that the function of extending the compression piston is realized; the compression piston return spring realizes the function of returning the compression piston;
the expansion cylinder comprises an expansion piston (a built-in heat regenerator), an ambient temperature cavity, an expansion cylinder air hole, a second expansion cylinder magnetic pole, an expansion piston return spring, an expansion cavity and an expansion piston dynamic seal; the expansion piston (built-in heat regenerator) is internally filled with a filler which exchanges heat with the working medium, so that the heat is absorbed when the working medium enters the expansion cavity, the temperature of the working medium is reduced, and when the working medium leaves the expansion cavity, the heat is released, and the temperature of the working medium is increased; the magnetic pole of the second expansion cylinder adopts a circular ring structure, so that a circulating working medium can enter and exit a heat regenerator arranged in the expansion piston from the center of the circular ring; the expansion cavity, the expansion piston (a built-in heat regenerator) and the ambient temperature cavity are communicated with each other, and the pressure is equal; the magnetic pole of the second expansion cylinder interacts with the magnetic pole of the first expansion cylinder, so that the extension function of an expansion piston (a built-in heat regenerator) is realized; the expansion piston return spring realizes the function of resetting the expansion piston (a built-in heat regenerator);
the split pipe is used for separating the expansion cylinder from the compression cylinder, so that the refrigerating part of the expansion cylinder is far away from the heating part of the compression cylinder, and the influence of the heating part on the refrigerating part is reduced; the split pipe provides a channel for circulating working medium to flow between the expansion cavity and the compression cavity;
helium is adopted as the circulating working medium, the molecular weight of the helium is small, and the helium is taken as actual gas, and the performance of the helium is close to the property of ideal gas; the circulation working medium flow path is as follows: compression chamber-compression cylinder air hole-separate tube-expansion cylinder air hole-ambient temperature chamber-expansion piston (built-in heat regenerator) -expansion chamber-expansion piston (built-in heat regenerator) -ambient temperature chamber-expansion cylinder air hole-separate tube-compression cylinder air hole-compression chamber;
the circuit system comprises various electronic elements or sensing elements to realize the functions of acquisition, processing, storage, transmission and the like of the drilling data; the circuit system is fixed at the end part of the expansion cavity through thermal design, and absorbs heat on the circuit system when the cooling system works.
The operation of the present embodiment will be described in detail below.
During drilling, drilling fluid enters the eccentric water hole 1 with a cooling system through the water hole of the previous drill rod, and when the drilling fluid flowing at high speed flows through the fixed turbine 5, the flow direction of the drilling fluid is changed because the blades on the fixed turbine form a certain included angle with the flow direction of the drilling fluid; the drilling fluid with changed flow direction scours blades on the movable turbine 7 with a certain included angle with the flow direction of the drilling fluid, so that the movable turbine 7 obtains hydraulic energy to start rotating, and a rotating shaft 10 fixed on the movable turbine 7 also rotates together; a first expansion cylinder magnetic pole 9 and a first compression cylinder magnetic pole 11 are fixed on the rotating shaft 10 and respectively interact with a second expansion cylinder magnetic pole 28 and a second compression cylinder magnetic pole 21, so that an expansion piston (built-in heat regenerator) 25 and a compression piston 23 sequentially extend out and then sequentially reset under the action of an expansion piston reset spring 29 and a compression piston reset spring 22; the interval between the sequential stretching and resetting is determined by the phase angle of the expansion cavity before the compression cavity; each time the rotating shaft 10 rotates for one circle, the expansion piston 25 and the compression piston 23 respectively complete one-time extension and reset; because the drilling fluid continuously circulates, the rotating shaft 10 is always in a rotating state, and the expansion piston 25 and the compression piston 23 periodically perform stretching and resetting reciprocating linear motion; meanwhile, the expansion piston (built-in heat regenerator) 25 and the compression piston 23 are designed according to the reverse Stirling cycle, the motion law is shown by a reverse Stirling cycle pressure-volume diagram in FIG. 8 and a reverse Stirling cycle temperature-entropy diagram in FIG. 9, and the thermodynamic refrigeration cycle processes of isothermal compression (S1-S2), isothermal heat release (S2-S3), isothermal expansion (S3-S4) and isothermal heat absorption (S4-S1) are sequentially completed.
During the isothermal compression (S1-S2), the stroke of the compression piston 23 is gradually increased from 0, while the expansion piston (built-in regenerator) 25 remains stationary, so that the working medium gas is isothermally compressed; the designed isothermal process is realized by absorbing heat generated by compression through the cylinder wall of the compression cylinder 13 and the drill collar body 4 connected with the compression cylinder, and taking away the heat through heat exchange between the drilling fluid flowing at high speed and the drill collar body 4; in the process, the temperature of the 1 point is equal to the temperature of the 2 points, the pressure of the 1 point is less than the pressure of the 2 points, and the volume of the 1 point is greater than the volume of the 2 points;
in the process of constant volume heat release (S2-S3), the compression piston 23 and the expansion piston (built-in heat regenerator) 25 move together, the stroke of the compression piston 23 gradually reaches the maximum, the stroke of the expansion piston (built-in heat regenerator) 25 gradually increases from 0, working medium gas sequentially passes through the split pipe 14, the ambient temperature cavity 26 and the expansion piston (built-in heat regenerator) 25 from the compression cavity 19 and enters the expansion cavity 30, and in the process, the total volume of the working medium gas is kept unchanged but passes through the expansion piston
When the heat regenerator is arranged (25), the heat of the working medium gas is absorbed by the filler of the heat regenerator, so that the pressure of the working medium gas entering the expansion cavity 30 is reduced, and the temperature is reduced; the process belongs to an internal heat exchange process and is not related to the energy consumption of the whole cycle; in this process, the temperature at point 2 is greater than the temperature at point 3, the pressure at point 2 is greater than the pressure at point 3, and the volume at point 2 is equal to the volume at point 3;
in the isothermal expansion (S3-S4), the compression piston 23 is kept still at the maximum stroke position, the stroke of the expansion piston (built-in heat regenerator) 25 gradually reaches the maximum, the working medium gas expands in the expansion cavity 30, so that the volume of the working medium gas is increased, the pressure is reduced, the temperature of the working medium gas is lower than the ambient temperature, and further, heat is absorbed from a circuit system in contact with the working medium gas, so that isothermal expansion is maintained; in the process, the temperature of 3 points is equal to the temperature of 4 points, the pressure of 3 points is higher than the pressure of 4 points, and the volume of 3 points is less than the volume of 4 points;
in the process of isochoric heat absorption (S4-S1), the compression piston 23 and the expansion piston (built-in heat regenerator) 25 move together and reset to 0 position from the maximum stroke, working medium gas sequentially passes through the expansion piston (built-in heat regenerator) 25, the ambient temperature cavity 26 and the separate pipe 14 from the expansion cavity 30 and enters the compression cavity 19, in the process, the total volume of the working medium gas is kept unchanged, but when the working medium gas passes through the expansion piston (built-in heat regenerator) 25, the low-temperature working medium gas absorbs the heat of the heat regenerator filler, so that the pressure of the working medium gas entering the compression cavity 19 is increased, and the temperature is increased; the process also belongs to an internal heat exchange process and is irrelevant to the energy consumption of the whole cycle; in the process, the temperature of the 4 point is lower than that of the 1 point, the pressure of the 4 point is lower than that of the 1 point, and the volume of the 4 point is equal to that of the 1 point;
the circuit system 16 is fixed at the end of the expansion cavity 30 through a thermal design, and the four refrigeration cycle processes are performed, so that the expansion cavity 30 continuously absorbs the heat of the circuit system 16, and the phenomenon of short service life or failure of the circuit system 16 is avoided.
The utility model discloses use the piston to exert the inflation effect to the cycle medium in the cylinder, cause the increase of cycle medium volume, pressure drop to the temperature reduces, makes it have endothermic ability, and then reduces the temperature of the circuit in the pit rather than linking to each other. The expansion cylinder and the compression cylinder are designed according to the reverse Stirling cycle principle, and the turbine rotating device and the magnetic pole driving device jointly act, so that the four refrigeration cycle processes of isothermal compression, isothermal heat release, isothermal expansion and isothermal heat absorption of a cycle working medium are realized, heat on a circuit system is absorbed by the expansion cavity, the heat is transferred to the compression cavity, and is further released to the environment, the temperature of the circuit system is reduced, and the phenomenon of shortening the service life or losing efficacy is avoided.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A magnetic pole drive cooling system for while-drilling instrument circuitry, comprising:
the turbine rotating device is arranged in an eccentric water hole (1) of the drill collar body (4) and connected with a rotating shaft (10), the rotating shaft (10) is provided with a first expansion cylinder magnetic pole (9) and a first compression cylinder magnetic pole (11) in a staggered mode along the axial direction, and the projection of the first expansion cylinder magnetic pole (9) and the first compression cylinder magnetic pole (11) on the horizontal plane is an included angle which is not zero;
an expansion cylinder (17) divided into an expansion chamber (30) and an ambient temperature chamber (26) by an expansion piston (25) with a second expansion cylinder pole (28), the expansion piston (25) being driven by the first expansion cylinder pole (9) to reciprocate by the second expansion cylinder pole (28);
a compression cylinder (13) in which a compression piston (23) with a second compression cylinder pole (21) and a compression chamber (19) communicating with the ambient temperature chamber (26) are arranged; the compression piston (23) is driven to reciprocate by the first compression cylinder magnetic pole (11) through the second compression cylinder magnetic pole (21).
2. The magnetic pole drive cooling system for while-drilling instrument circuitry as recited in claim 1, wherein the turbine rotation device comprises:
the fixed turbine (5) is arranged in the water hole through a fixing device, and the blade of the fixed turbine and the drill collar form an included angle which is not zero in the axial direction;
the moving turbine (7) is arranged in the water hole through the rolling support device, and the blades of the moving turbine and the blades of the fixed turbine (5) have inclination angles; the movable turbine (7) is connected with the rotating shaft (10).
3. The pole drive cooling system for while-drilling tool circuitry as recited in claim 1, wherein the phase angle of the first expansion cylinder pole (9) leads the phase angle of the first compression cylinder pole (11) in the direction of rotation of the rotating shaft (10).
4. The magnetic pole driven cooling system for the while-drilling instrument circuit system according to claim 1, wherein a heat regenerator is arranged in the expansion piston (25).
5. The magnetic pole driving cooling system for the while-drilling instrument circuit system according to claim 1, wherein the second expansion cylinder magnetic pole (28) is of a circular ring structure, and working media in the expansion cavity (30) and the ambient temperature cavity (26) enter and exit a regenerator arranged in the expansion piston through the center of the circular ring structure.
6. The magnetic pole driving cooling system for the while-drilling instrument circuit system according to claim 1, wherein a separate pipe is arranged in the drill collar body (4) and is used for separating the expansion cylinder (17) and the compression cylinder (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921889061.2U CN210808073U (en) | 2019-11-05 | 2019-11-05 | Magnetic pole driving cooling system for circuit system of while-drilling instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921889061.2U CN210808073U (en) | 2019-11-05 | 2019-11-05 | Magnetic pole driving cooling system for circuit system of while-drilling instrument |
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| CN210808073U true CN210808073U (en) | 2020-06-19 |
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| CN201921889061.2U Active CN210808073U (en) | 2019-11-05 | 2019-11-05 | Magnetic pole driving cooling system for circuit system of while-drilling instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111212548A (en) * | 2019-11-05 | 2020-05-29 | 中国石油天然气集团有限公司 | Magnetic pole driving cooling system and method for while-drilling instrument circuit system |
| CN113873851A (en) * | 2021-10-13 | 2021-12-31 | 燕山大学 | Radiation heat dissipation reinforcing equipment |
-
2019
- 2019-11-05 CN CN201921889061.2U patent/CN210808073U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111212548A (en) * | 2019-11-05 | 2020-05-29 | 中国石油天然气集团有限公司 | Magnetic pole driving cooling system and method for while-drilling instrument circuit system |
| CN111212548B (en) * | 2019-11-05 | 2023-08-04 | 中国石油天然气集团有限公司 | Magnetic pole driving cooling system and method for while-drilling instrument circuit system |
| CN113873851A (en) * | 2021-10-13 | 2021-12-31 | 燕山大学 | Radiation heat dissipation reinforcing equipment |
| CN113873851B (en) * | 2021-10-13 | 2024-04-09 | 燕山大学 | Radiation heat dissipation equipment |
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