CN217481261U - Geothermal well temperature measurement nipple joint - Google Patents
Geothermal well temperature measurement nipple joint Download PDFInfo
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- CN217481261U CN217481261U CN202221180845.XU CN202221180845U CN217481261U CN 217481261 U CN217481261 U CN 217481261U CN 202221180845 U CN202221180845 U CN 202221180845U CN 217481261 U CN217481261 U CN 217481261U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The utility model provides a geothermal well temperature measurement nipple, wherein a conducting ring and a temperature measurement bus are embedded in a heat insulation bushing of the temperature measurement nipple, the conducting ring is connected with the temperature measurement bus, and the temperature measurement bus is connected with a temperature measurement module; the outer side of the temperature measuring nipple is provided with an outer temperature sensor, the inner side of the temperature measuring nipple is provided with an inner temperature sensor, a temperature measuring module is arranged in the temperature measuring cavity, and the inner temperature sensor and the outer temperature sensor are connected with the temperature measuring module through a wire; the temperature measurement module can simultaneously process the internal and external temperature data measured by the internal temperature sensor and the external temperature sensor into digital signals with address codes, and transmits the digital signals to the ground special processor through the temperature measurement bus, so that the internal and external temperatures of the temperature measurement short section can be simultaneously measured; the temperature measuring cavity is filled with a temperature measuring cavity heat insulating material, so that heat transfer inside and outside the temperature measuring nipple can be isolated, the heat insulating effect of the temperature measuring nipple is greatly improved, and the measuring results of the inside and outside temperatures are more accurate; the structural design is suitable for the full-size type design of the temperature measuring short section.
Description
Technical Field
The utility model relates to a geothermal energy development logging technical field, concretely relates to geothermal well temperature measurement nipple joint.
Background
Geothermal energy is a clean renewable energy source, and at present, the problems of limited shallow floor area, difficulty in deep hydrothermal water taking and recharging and the like are solved by installing a buried pipe heat exchanger to form an in-well closed circulation heat exchange technology, so that a novel mainstream technology for developing the middle-deep geothermal energy is formed.
The medium-deep layer heat exchange technology mainly conducts heat through an external heat exchanger in contact with a rock-soil body, a built-in heat-insulation inner pipe outputs hot fluid, energy transfer is conducted through a heat exchange station to form circulation, a complex unsteady heat transfer process is conducted among fluid, pipe walls and surrounding rock-soil in the heat exchanger, and heat exchange characteristics are obviously affected by thermal physical parameters of the rock-soil and a ground temperature field. The characteristics of the geothermal field comprise an initial geothermal field, dynamic temperature field changes of surrounding rock and soil in the heat exchange process and the recovery of the temperature field in the heat exchange process. The monitoring of the geothermal field of the middle-deep geothermal well mainly carries out long-time dynamic temperature measurement through temperature sensors arranged on the inner and outer pipe walls of a heat exchanger of a ground buried pipe in the geothermal well. Conventional temperature sensors mainly include thermocouple sensors, thermistor sensors, Resistance Temperature Sensors (RTDs), analog temperature sensors, digital temperature sensors and distributed optical fiber sensors, and because of accuracy and technical problems, distributed optical fiber sensors and digital temperature sensors are commonly used in medium-deep geothermal wells, wherein the digital temperature sensors have higher measurement accuracy. At present, the temperature measurement technology of a medium-deep geothermal well with the well depth larger than 2000m is still immature, failure cases are more, mainly because the process of installing a temperature measurement system in a well is complex, and the temperature measurement cable externally arranged on a pipe wall is collided and rubbed with surrounding rock bodies and the side wall of an annulus in the lowering process and is stressed unevenly when being connected with a pipeline in the well, so that the temperature measurement cable is easily damaged, the installation of a ground temperature field monitoring system is failed, and the ground temperature field temperature monitoring work cannot be completed. In addition, the temperature measuring sensor or the temperature measuring optical fiber needs to be placed in the underground closed heat transfer working medium for a long time, and has extremely high requirements on high temperature resistance, high pressure resistance, corrosion resistance, oxidation resistance, hydrogen loss resistance, magnetic field interference resistance, radiation resistance, heat insulation, sealing property and the like.
Based on the above problem, the utility model provides a geothermal well temperature measurement nipple joint, through the inside and outside temperature sensor of design installation on the temperature measurement nipple joint, realize the temperature measurement to the inside and outside pipe of buried pipe heat exchanger, sensor and temperature measurement point in close contact with, temperature sensor wire and information transmission bus bury underground in the temperature measurement nipple joint equally, receive the protection of temperature measurement nipple joint wind outer tube, eliminate and transfer the possibility that temperature measurement cable damaged in the installation, and this nipple joint and heat exchanger formation overall structure, the temperature measurement nipple joint still has good thermal-insulated thermal insulation performance, it is less to make temperature measurement receive environmental disturbance in the pit, measurement accuracy is higher.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a geothermal well temperature measurement nipple joint for adopt single well heat transfer mode exploitation middle and deep geothermal energy technique, have can reliably transmit measured temperature data, measure temperature nipple joint inside and outside temperature simultaneously, measure the position and arrange characteristics such as nimble, temperature resistant ability reinforce, pipeline strength height, look that the coefficient of thermal conductivity is low, long service life, also can be used to adopt other modes to exploit middle and deep geothermal energy field.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a geothermal well thermometry sub comprising:
two ends of the core tube respectively penetrate through the end A connector and the end B connector; an end A heat insulation insulating bush is arranged between the core tube and the end A connector, and an end B heat insulation insulating bush is arranged between the core tube and the end B connector; the temperature measuring cavity outer tube is sleeved outside the core tube, and two ends of the temperature measuring cavity outer tube are respectively connected with the end A connector and the end B connector; a temperature measuring cavity heat insulating material is arranged between the temperature measuring cavity outer tube and the core tube; the temperature measurement cavity outer tube is provided with a temperature measurement cavity stepped hole, the step surface of the temperature measurement cavity stepped hole is provided with a plurality of sealing grooves, and the temperature measurement cavity outer tube is also provided with a temperature measurement cavity cover plate matched with the temperature measurement cavity stepped hole; the inner surface of the temperature measurement cavity cover plate is provided with a temperature measurement module, and the outer surface of the temperature measurement cavity cover plate is provided with an external temperature sensor connected with the temperature measurement module; an inner temperature sensor mounting hole for mounting an inner temperature sensor is formed in the core pipe, and the inner temperature sensor is connected with the temperature measuring module through a conducting wire arranged in the temperature measuring cavity heat insulation material; an inner stepped surface inner ring sealing groove and a stepped surface outer ring sealing groove are formed in the stepped surface of the temperature measuring cavity stepped hole; the temperature measurement cavity cover plate is of a T-shaped structure, the temperature measurement module is installed on one convex surface of the T-shaped structure, and two sides of the T-shaped structure are fixed on the temperature measurement cavity outer tube through cover plate fastening bolts.
Preferably, in the geothermal well temperature measurement short section, the end a heat insulation bushing is wound and fixedly bonded on the outer surface of the end a of the core pipe, and the core pipe penetrates through the inner through hole of the end a joint and then is welded with one end of the end a joint;
the B-end heat-insulation insulating bush is fixedly connected to the outer surface of the B end of the core pipe, and the core pipe penetrates through the inner through hole of the B-end connector and then is welded with one end of the B-end connector.
Preferably, in the geothermal well temperature measurement nipple, the temperature measurement cavity outer tube is formed by butt welding half-jointed tubes, and two ends of the temperature measurement cavity outer tube are respectively welded with the end-a joint and the end-B joint.
Preferably, in the geothermal well temperature measurement short section, a No. 3 bus, a No. 1 conducting ring at the end a and a No. 2 conducting ring at the end a are embedded in the heat insulation insulating lining at the end a, the No. 3 bus is connected with the No. 1 conducting ring at the end a, the No. 3 bus is connected with the No. 2 conducting ring at the end a, and after passing through a bus threading hole at the end a, the No. 3 bus and the No. 3 bus are connected with the temperature measurement module in the temperature measurement cavity, so that the processing and transmission of digital signals are realized.
Preferably, according to the geothermal well temperature measurement nipple, a B-end No. 1 conducting ring, a B-end No. 2 conducting ring, a No. 1 bus and a No. 2 bus are embedded in the B-end heat insulation lining, the B-end No. 1 conducting ring is connected with the No. 1 bus, the B-end No. 2 conducting ring is connected with the No. 2 bus, and the No. 1 bus and the No. 2 bus are connected with the temperature measurement module in the temperature measurement cavity after penetrating through the B-end joint bus threading hole.
Preferably, in the geothermal well temperature measurement nipple, the diameters of the end B1 conducting ring and the end B2 conducting ring are larger than the diameters of the end a 1 conducting ring and the end a 2 conducting ring, and the end B1 conducting ring and the end B2 conducting ring can be respectively in interference connection with the end a 1 conducting ring and the end a 2 conducting ring of the adjacent geothermal well temperature measurement nipple.
Preferably, above-mentioned geothermal well temperature measurement nipple joint, processing has A end joint box thread on the A end joint, and processing has B end joint pin thread on the B end joint for rather than having cable type compound incubation pipe cluster that the cooperation size structure realized threaded connection.
Compared with the prior art, the utility model, its advantage as follows:
(1) temperature sensors are embedded in the inner and outer side surfaces of the temperature measuring cavity section of the temperature measuring nipple, so that the inner and outer side temperatures of the nipple can be measured simultaneously;
(2) the temperature measurement module of the temperature measurement short section can process the internal and external temperature data into a digital signal with an address code and transmit the digital signal to the ground special processor through the temperature measurement bus;
(3) the temperature measuring short joint can be arranged at any connecting position in a buried pipe string of a middle-deep geothermal well, and measuring points are flexibly arranged;
(4) one or more temperature measuring short sections can be arranged at different positions in the buried pipe string of the same middle-deep geothermal well, so that the temperature of different positions in the middle-deep geothermal well and different depths in the buried pipe string can be measured simultaneously;
(5) the joint and the core pipe of the temperature measuring nipple are made of materials and steel grades which meet the API standard, so that the strength, the service life and the temperature and pressure resistance of the temperature measuring nipple are improved;
(6) the heat insulation bushing of the temperature measuring short section is made of glass fiber reinforced plastics which can resist temperature of more than 150 ℃ for a long time, such as alicyclic epoxy glass fiber reinforced plastics or polyimide glass fiber reinforced plastics, and has the characteristics of strong temperature resistance, light weight, high mechanical strength, good electrical insulation and low apparent heat conductivity coefficient;
(7) thermal insulation materials such as nano aerogel or ceramic fibers are filled in a temperature measuring cavity of the temperature measuring nipple, the temperature measuring nipple has an ultralow apparent thermal conductivity coefficient, and heat transfer inside and outside the temperature measuring nipple can be cut off, so that the thermal insulation effect of the temperature measuring nipple is greatly improved, the measurement of the inside and outside temperature is more accurate, and the heat taking power of a geothermal well is obviously improved;
(8) the thermal-insulated insulating bush of temperature measurement nipple joint has buried a plurality of conducting rings that communicate in proper order respectively and corresponds the cable bus of quantity underground, makes the temperature measurement nipple joint have reliable transmission temperature measurement data function, and is difficult to damage.
Drawings
FIG. 1 is a longitudinal sectional view of a temperature measuring nipple of a geothermal well of the present invention;
FIG. 2 is a schematic view of a sectional view of a temperature measuring nipple of a geothermal well;
FIG. 3 is an enlarged schematic view of section I of FIG. 1;
fig. 4 is an enlarged schematic view of section II in fig. 2.
In the figure, 1, an A end joint female thread; 2. end A joint; 3, the inner surface of the end A heat insulation bushing; 4, an A-end heat insulation bushing; 5. the inner surface of the end A of the core tube; 6. a core tube; 7, welding seams of the outer pipe of the temperature measuring cavity of the end A joint; 8.a temperature measuring cavity outer tube; 9. welding a core pipe of the A-end connector; 10. a temperature measuring cavity thermal insulation material; welding seams of core pipes of the joints at the B ends; 12, welding seams of the outer pipe of the temperature measuring cavity of the end B connector; a B-end joint; a B-end thermally insulating bushing; the B end joint male thread; 16. the outer surface of the B-end heat insulation bushing; 17. the outer surface of the B end of the core pipe; 18. a high temperature resistant seal ring; 19. a sealing groove at the B end of the core pipe; 20. a No. 1 conducting ring at the B end; a No. 2 conducting ring at the B end; 22.B end connector bus threading hole; bus No. 23.1; bus number 24.2; 25, an A-end connector bus threading hole; bus number 26.3; bus number 27.4; 28, end a No. 1 conducting ring; 29, end a, conductive ring No. 2; 30. a temperature measurement cavity stepped hole; 31. a sealing groove of an inner ring of the stepped surface; 32. the cover plate is fastened with the threaded hole; 33. a sealing groove of the outer ring of the stepped surface; 34. a stepped surface of the temperature measuring cavity; 35. a temperature measurement cavity cover plate; 36. an external temperature sensor mounting hole; 37. an external temperature sensor; 38. the module tightly fixes the threaded hole; 39. a cover plate fastening bolt; 40. the cover plate is fastened with the stepped hole; 41, an A-end connector inner temperature wire hole; 42. an inner temperature sensor mounting hole; 43. an internal temperature sensor; 44. an internal temperature No. 1 wire; 45. an internal temperature No. 2 conducting wire; 46. the temperature measuring module is provided with a set screw; 47. a temperature measuring module; 48. an external temperature No. 1 wire; 49. an external temperature No. 2 wire; 50. a temperature measuring module fixing hole; 51. an outer ring seal ring; 52. an inner ring sealing ring.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a geothermal well temperature measurement nipple joint, with there is cable type composite insulation pipe to connect mutually, as shown in figure 1, figure 2, figure 3 and figure 4, the temperature measurement nipple joint by A end joint box thread 1, A end joint 2, the thermal-insulated insulating bush internal surface of A end 3, the thermal-insulated insulating bush 4 of A end, core pipe A end internal surface 5, core pipe 6, A end joint temperature measurement chamber outer tube welding seam 7, temperature measurement chamber outer tube 8, A end joint core pipe welding seam 9, temperature measurement chamber thermal insulation material 10, B end joint core pipe welding seam 11, B end joint temperature measurement chamber outer tube welding seam 12, B end joint 13, B end thermal-insulated insulating bush 14, B end joint male thread 15, B end thermal-insulated insulating bush surface 16, core pipe B end surface 17, high temperature resistant sealing washer 18, core pipe B end seal groove 19, B end No. 1 conducting ring 20 of B end, B end No. 2 conducting ring 21, B end joint bus hole 22 threading, B end joint, No. 1 bus 23, No. 2 bus 24, a terminal a joint bus threading hole 25, No. 3 bus 26, No. 4 bus 27, a terminal a No. 1 conductive ring 28, a terminal a No. 2 conductive ring 29, a temperature measurement cavity stepped hole 30, a stepped surface inner ring seal groove 31, a cover plate fastening threaded hole 32, a stepped surface outer ring seal groove 33, a temperature measurement cavity stepped surface 34, a temperature measurement cavity cover plate 35, an outer temperature sensor mounting hole 36, an outer temperature sensor 37, a module fastening threaded hole 38, a cover plate fastening bolt 39, a cover plate fastening stepped hole 40, a terminal a inner temperature conductive hole 41, an inner temperature sensor mounting hole 42, an inner temperature sensor 43, an inner temperature No. 1 conductive wire 44, an inner temperature No. 2 conductive wire 45, a temperature measurement module fastening screw 46, a temperature measurement module 47, an outer temperature No. 1 conductive wire 48, an outer temperature No. 2 conductive wire 49, a temperature measurement module fixing hole 50, an outer ring seal ring 51, and an inner ring seal ring 52.
In the embodiment, the A-end heat insulation bushing 4 of the measuring nipple is wound and fixedly connected on the outer surface of the A-end of the core pipe 6, and the core pipe 6 penetrates through the inner through hole of the A-end connector 2 and then is welded together at the welding seam 9 of the core pipe of the A-end connector.
In the embodiment, the core pipe 6 of the measuring nipple penetrates through an inner through hole of the B-end joint 13 and then is welded together at the core pipe welding seam 11 of the B-end joint, and the B-end heat insulation bushing 14 is fixedly connected to the outer surface of the B end of the core pipe 6.
The temperature measurement cavity outer tube 8 of the measuring nipple of the embodiment is formed by butt welding of 1 half-jointed tube, and then is respectively welded with the A-end connector 2 at the A-end connector core tube welding seam 7 and is welded with the B-end connector 13 at the B-end connector core tube welding seam 12.
A temperature measuring cavity stepped hole 30 is designed on a temperature measuring cavity outer tube 8 of the measuring nipple, and a stepped surface inner ring sealing groove 31, a cover plate fastening threaded hole 32 and a stepped surface outer ring sealing groove 33 are designed on a cavity measuring stepped surface 34 of the temperature measuring cavity stepped hole 30.
The design has 1 outer temperature sensor mounting hole 36, 4 module fastening screw holes 38 and 4 apron fastening shoulder holes 40 on the temperature measurement chamber apron 35 of nipple joint is measured to this embodiment.
After the cover plate fastening bolt 39 of the measuring nipple of the embodiment penetrates through the cover plate fastening stepped hole 40, the cover plate fastening bolt is in threaded connection with the cover plate fastening threaded hole 32, the temperature measuring cavity cover plate 35 is fastened on the temperature measuring cavity outer tube 8, and the temperature measuring cavity cover plate 35 and the temperature measuring cavity outer tube 8 are sealed through the outer ring sealing ring 51 and the inner ring sealing ring 52.
The design has 4 temperature measurement module fixed orificess 50 on the temperature measurement module 47 of nipple joint is measured to this embodiment, and behind temperature measurement module holding screw 46 passed temperature measurement module fixed orificess 50, threaded connection is in module holding screw hole 38 to with the internal surface of temperature measurement module 47 fastening at temperature measurement cavity apron 35.
The outer temperature sensor 37 of nipple joint is measured to this embodiment installs in outer temperature sensor mounting hole 36 to sealed with high temperature and high pressure resistant sealant, connect and be connected with temperature measurement module 47 after outer temperature No. 1 wire 48 and outer temperature No. 2 wire 49 of outer temperature sensor 37 bottom pass outer temperature sensor mounting hole 36, realize the measurement to the outside temperature of temperature measurement nipple joint.
The nipple joint is measured to this embodiment in the temperature sensor 43 installs the interior temperature sensor mounting hole 42 on core pipe 6 to sealed with high temperature resistant highly compressed sealed glue, the connection is at the interior temperature 1 wire 44 of temperature sensor 43 bottom in and interior temperature 2 wire 45 pass and be connected with temperature measurement module 47 behind the temperature wire hole 41 in the A end connector on the A end connector 2, realize the measurement to the inboard center passage temperature of temperature measurement nipple joint.
A No. 3 bus 26, a No. 4 bus 27, an A-end No. 1 conducting ring 28 and an A-end No. 2 conducting ring 29 are embedded in the A-end heat insulation bushing 4 of the measuring pup joint. The inner surface of the conducting ring is exposed and is flush with the inner surface 3 of the A-end heat insulation bushing. The No. 3 bus 26 is connected with the No. 1 conducting ring 28 at the A end, and the No. 4 bus 27 is connected with the No. 2 conducting ring 29 at the A end, so that the conduction and the transmission of the measuring signals are realized.
No. 3 bus 26 and No. 4 bus 27 of nipple joint are measured to this embodiment and are passed A end joint bus through wires hole 25 after, are connected with temperature measurement module 47 in the temperature measurement intracavity, have filled high temperature resistant insulating sealant in A end joint bus through wires hole 25.
In the present embodiment, a B-end No. 1 conducting ring 20, a B-end No. 2 conducting ring 21, a No. 1 bus 23, and a No. 2 bus 24 are embedded in the B-end heat-insulating bushing 14 of the measuring nipple. The outer surface of the conductive ring is exposed and slightly higher than the outer surface 16 of the insulating bushing at the end B. The conductive ring No. 1 at the B end 20 is connected with the bus No. 1 23, and the conductive ring No. 2 at the B end 21 is connected with the bus No. 2 24, so that the conduction and the transmission of the measurement signals are realized.
No. 1 bus 23 and No. 2 bus 24 of this embodiment measurement nipple joint pass behind B end joint bus through wires hole 22, are connected with temperature measurement module 47 in the temperature measurement intracavity, and it has high temperature resistant insulating sealant to pour into in the B end joint bus through wires hole 22.
Preferably, processing has A end joint box thread 1 on the A end joint 2 of this embodiment measurement nipple joint, and processing has B end joint pin thread 15 on the B end joint 13 for it has cable type compound incubation pipe cluster that has the cooperation size structure to realize threaded connection.
Preferably, the a-end thermal insulation bushing 4 of the measurement pup joint of the present embodiment is designed with an a-end thermal insulation bushing inner surface 3, and the B-end thermal insulation bushing 14 is designed with a B-end thermal insulation bushing outer surface 16, so as to realize plug-in connection with the cabled composite thermal insulation pipe string having a matching dimension structure.
Preferably, the end a of the core pipe 6 of the measurement nipple of the present embodiment is designed with an inner surface 5 of the end a of the core pipe, and the end B is designed with an outer surface 17 of the end B of the core pipe, so as to realize plug-in connection with the cabled composite heat insulation pipe string having a matched dimension structure.
Preferably, two core tube B end sealing grooves 19 are designed at the B end of the core tube 6 of the measuring nipple in the embodiment, and a high-temperature-resistant sealing ring 18 is designed in the core tube B end sealing groove 19, so that a medium cannot leak during plug connection.
Preferably, an outer ring sealing ring 51 and an inner ring sealing ring 52 which are resistant to high temperature and high pressure are respectively designed in the stepped surface inner ring sealing groove 31 and the stepped surface outer ring sealing groove 33 of the measuring nipple of the present embodiment, so that a good sealing effect is ensured when the measuring nipple is used in a long-term high-temperature and high-pressure environment.
As preferred, the A end connector 2, the temperature measurement cavity outer tube 8, the B end connector 13 and the core tube 6 of this embodiment measurement nipple select materials and steel grade which accord with API standard, improve the intensity, the life-span and the temperature-resistant pressure-resistant ability of temperature measurement nipple.
Preferably, the insulation bushing 4 at the end a and the insulation bushing 14 at the end B of the measurement nipple in this embodiment are made of alicyclic epoxy glass fiber reinforced plastic or polyimide glass fiber reinforced plastic and other glass fiber reinforced plastics which can withstand temperature of more than 150 ℃ for a long time, and have the characteristics of strong temperature resistance, light weight, high mechanical strength, good electrical insulation and low apparent thermal conductivity.
As preferred, the temperature measurement chamber thermal insulation material 10 of this embodiment measurement nipple joint chooses for use thermal insulation materials such as nanometer aerogel or ceramic fibre thermal-insulated, has the super low apparent coefficient of thermal conductivity, fills the temperature measurement cavity section that constitutes by A end connector 2, temperature measurement chamber outer tube 8, B end connector 13 and core pipe 6, cuts off the heat transfer of temperature measurement nipple joint inside and outside, makes the thermal-insulated heat preservation effect of temperature measurement nipple joint promote by a wide margin, and inside and outside temperature measuring result is more accurate.
Preferably, the temperature measurement module 47 of the temperature measurement nipple of this embodiment can process the inside and outside temperature data measured by the inside temperature sensor 43 and the outside temperature sensor 37 into a digital signal with an address code, and transmit the digital signal to the ground special processor through the temperature measurement bus, so as to realize simultaneous measurement of the inside and outside temperatures of the measurement nipple.
The above, it is only the embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention to any simple modification, equivalent change and modification made by the above embodiment all still belong to the protection scope of the present invention. The structural design is suitable for the full-size model design of the measuring short section.
Claims (7)
1.A geothermal well temperature measurement nipple, comprising:
the two ends of the core tube (6) respectively penetrate through the A-end connector (2) and the B-end connector (13); an A-end heat insulation insulating bush (4) is arranged between the core tube (6) and the A-end connector (2), and a B-end heat insulation insulating bush (14) is arranged between the core tube (6) and the B-end connector (13); the temperature measuring cavity outer pipe (8) is sleeved outside the core pipe (6), and two ends of the temperature measuring cavity outer pipe are respectively connected with the A end connector (2) and the B end connector (13); a temperature measuring cavity heat insulating material (10) is arranged between the temperature measuring cavity outer tube (8) and the core tube (6); a temperature measuring cavity stepped hole (30) is formed in the temperature measuring cavity outer tube (8), a plurality of sealing grooves are formed in the step surface of the temperature measuring cavity stepped hole (30), and a temperature measuring cavity cover plate (35) matched with the temperature measuring cavity stepped hole (30) is further arranged on the temperature measuring cavity outer tube (8); the inner surface of the temperature measurement cavity cover plate (35) is provided with a temperature measurement module (47), and the outer surface of the temperature measurement cavity cover plate (35) is provided with an external temperature sensor (37) connected with the temperature measurement module (47); an inner temperature sensor mounting hole (42) for mounting an inner temperature sensor (43) is formed in the core pipe (6), and the inner temperature sensor (43) is connected with the temperature measuring module (47) through a conducting wire arranged in the temperature measuring cavity heat insulating material (10); an inner step surface inner ring sealing groove (31) and a step surface outer ring sealing groove (33) are formed in the step surface of the temperature measuring cavity step hole (30); the temperature measurement cavity cover plate (35) is of a T-shaped structure, the temperature measurement module (47) is installed on one convex surface of the T-shaped structure, and two sides of the T-shaped structure are fixed on the temperature measurement cavity outer tube (8) through cover plate fastening bolts (39).
2. The geothermal well temperature measurement short section according to claim 1, wherein the A-end heat insulation bushing (4) is wound and fixedly connected on the outer surface of the A-end of the core pipe (6), and the core pipe (6) is welded with one end of the A-end joint (2) after penetrating through the inner through hole of the A-end joint (2);
the B-end heat insulation bushing (14) is fixedly connected to the outer surface of the B end of the core pipe (6), and the core pipe (6) penetrates through the inner through hole of the B-end connector (13) and then is welded with one end of the B-end connector (13).
3. The geothermal well temperature measurement short section according to claim 1, wherein the temperature measurement outer cavity tube (8) is formed by butt welding of half-closed tubes, and two ends of the temperature measurement outer cavity tube (8) are respectively welded with the end A joint (2) and the end B joint (13).
4. The geothermal well temperature measurement short section according to claim 1, wherein a No. 3 bus (26), a No. 4 bus (27), a No. 1 conducting ring (28) at the A end and a No. 2 conducting ring (29) at the A end are embedded in the insulation bushing (4) at the A end, the No. 3 bus (26) is connected with the No. 1 conducting ring (28) at the A end, the No. 4 bus (27) is connected with the No. 2 conducting ring (29) at the A end, and the No. 3 bus (26) and the No. 4 bus (27) are connected with the temperature measurement module (47) in the temperature measurement cavity after passing through the bus threading hole (25) at the A end, so that digital signal processing and transmission are realized.
5. The geothermal well temperature measurement short section according to claim 4, wherein a B-end No. 1 conducting ring (20), a B-end No. 2 conducting ring (21), a No. 1 bus (23) and a No. 2 bus (24) are embedded in the B-end heat insulation bushing (14), the B-end No. 1 conducting ring (20) is connected with the No. 1 bus (23), the B-end No. 2 conducting ring (21) is connected with the No. 2 bus (24), and the No. 1 bus (23) and the No. 2 bus (24) are connected with the temperature measurement module (47) in the temperature measurement cavity after penetrating through a B-end joint bus threading hole (22).
6. The geothermal well temperature measurement sub of claim 5, wherein the diameters of the B-end No. 1 conducting ring (20) and the B-end No. 2 conducting ring (21) are larger than the diameters of the A-end No. 1 conducting ring (28) and the A-end No. 2 conducting ring (29), and the B-end No. 1 conducting ring (20) and the B-end No. 2 conducting ring (21) can be in interference connection with the A-end No. 1 conducting ring (28) and the A-end No. 2 conducting ring (29) of the adjacent geothermal well temperature measurement sub respectively.
7. The temperature measuring nipple of the geothermal well according to claim 1, characterized in that an A-end joint female thread (1) is processed on the A-end joint (2), and a B-end joint male thread (15) is processed on the B-end joint (13) and is used for realizing threaded connection with a cabled composite heat-insulating pipe string with a matched dimension structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221180845.XU CN217481261U (en) | 2022-05-17 | 2022-05-17 | Geothermal well temperature measurement nipple joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221180845.XU CN217481261U (en) | 2022-05-17 | 2022-05-17 | Geothermal well temperature measurement nipple joint |
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| CN217481261U true CN217481261U (en) | 2022-09-23 |
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| CN202221180845.XU Active CN217481261U (en) | 2022-05-17 | 2022-05-17 | Geothermal well temperature measurement nipple joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115680606A (en) * | 2022-10-31 | 2023-02-03 | 中国石油天然气集团有限公司 | High-stability high-temperature-resistant measuring system and measuring method for measuring drilling parameters |
-
2022
- 2022-05-17 CN CN202221180845.XU patent/CN217481261U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115680606A (en) * | 2022-10-31 | 2023-02-03 | 中国石油天然气集团有限公司 | High-stability high-temperature-resistant measuring system and measuring method for measuring drilling parameters |
| CN115680606B (en) * | 2022-10-31 | 2024-01-02 | 中国石油天然气集团有限公司 | Measurement system and measurement method for measuring drilling parameters with high stability and high temperature resistance |
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