Ultrahigh-temperature electronic circuit framework structure for well logging

Abstract

The present disclosure relates to an ultrahigh-temperature electronic circuit framework structure for well logging, comprising a plurality of nipple structures. The plurality of nipple structures are respectively provided with a plurality of circuit boards and electronic devices; the plurality of nipple structures are sequentially aligned and fixedly connected to form a framework structure body; and one end of the framework structure body is provided with a wire harness fixing nut, and the other end of the framework structure body is provided with a joint, wherein an oil passage pipe cavity is provided in the framework structure body; an oil injection oil passage pipe cavity and an oil return oil passage pipe cavity communicated with each other are formed in the oil passage pipe cavity; an oil injection port of the oil injection oil passage pipe cavity and an oil return port of the oil return oil passage pipe cavity are both arranged on the joint; the connected ends of the oil injection oil passage pipe cavity and the oil return oil passage pipe cavity are arranged on the side close to the wire harness fixing nut; and the circuit boards and electronic devices are all arranged between the oil injection oil passage pipe cavity and the oil return oil passage pipe cavity.

Description

Ultra-high temperature electronic circuit skeleton structure for well logging

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on November 20, 2023, with application number 202311551524.5 and titled “A Ultra-High Temperature Electronic Circuit Skeleton Structure for Well Logging,” the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present disclosure belongs to the technical field of formation sampling, and in particular relates to an ultra-high temperature electronic circuit skeleton structure for well logging. Background Art

[0004] With the rapid development of the oil and gas industries, rotary wellbore coring plays an increasingly important role in oil and gas exploration, and high-temperature rotary wellbore coring instruments are becoming increasingly popular in the industry.

[0005] However, when high-temperature rotary sidewall coring instruments operate for extended periods in high-temperature, high-pressure environments at 205°C / 140MPa, the electronics module, which utilizes an integrated thermos flask, cannot be directly removed from the thermos flask after coring to prevent damage to the electronics due to a sudden temperature drop. This exposes the module's internal structure and electronics to prolonged high temperatures, preventing them from cooling uniformly and potentially accelerating the aging of the electronics. Summary of the Invention

[0006] In order to solve all or part of the above problems, the present disclosure aims to provide an ultra-high temperature electronic circuit skeleton structure for well logging, so as to reduce the aging problem of electronic components caused by being in a high temperature environment for a long time.

[0007] The present disclosure provides an ultra-high temperature electronic circuit skeleton structure for well logging, comprising a plurality of short section structures, wherein a plurality of circuit boards and electronic components are respectively provided on the plurality of short section structures, and the plurality of short section structures are connected and fixed in sequence to form a skeleton structure body, wherein a wiring harness fixing nut is provided at one end of the skeleton structure body, and a joint is provided at the other end of the skeleton structure body, wherein an oil circuit lumen is provided inside the skeleton structure body, and an oil filling lumen and an oil return lumen are formed in the oil circuit lumen, and the oil filling port of the oil filling lumen and the oil return port of the oil return lumen are both provided on the joint, and the end at which the oil filling lumen and the oil return lumen are connected is provided on a side close to the wiring harness fixing nut, and the circuit board and the electronic components are both provided between the oil filling lumen and the oil return lumen.

[0008] In some embodiments, sub-oil circuit lumens are formed on several short-section structures. After the several short-section structures are fixedly connected, the sub-oil circuit lumens are connected to form an oil injection circuit lumen and an oil return circuit lumen. Among them, a sealing connecting column is provided in the docking end of the sub-oil circuit lumen of each short-section structure, and both ends of the sealing connecting column are sealed and inserted into each sub-oil circuit lumen to make each sub-oil circuit lumen sealed and connected.

[0009] In some embodiments, one end where the oil injection line lumen and the oil return line lumen are connected is constructed as a bent lumen structure.

[0010] In some embodiments, the bent lumen structure is configured such that the oil injection line lumen and the oil return line lumen are bent at an angle of 120° respectively and then butted against each other at an angle of 120°.

[0011] In some embodiments, a process hole is formed on the short section structure at a position corresponding to the bent portion of the oil injection line lumen and the oil return line lumen, and a dead plug is fixed in the process hole.

[0012] In some embodiments, an oil filling one-way valve is further provided in the oil filling port, and a process hole is formed on the joint and is respectively connected to the oil filling port and the oil return port, and a plug is provided on the process hole.

[0013] In some embodiments, several short section structures include a first insulation plug, a fixing sleeve, a first skeleton, a first heat absorber, a second skeleton, a second heat absorber, a third skeleton, a third heat absorber, and a second insulation plug fixedly connected in sequence; the first insulation plug is connected to the wiring harness fixing nut, the second insulation plug is connected to the connector, and the oil circuit lumen is formed in the first skeleton, the first heat absorber, the second skeleton, the second heat absorber, the third skeleton, the third heat absorber, and the second insulation plug; wherein, a transformer and a roller are provided on the first skeleton, and a first circuit board, a second circuit board, a third circuit board, an isolated power supply, a fourth circuit board and a fifth circuit board are provided on the second skeleton; and a sixth circuit board, a seventh circuit board, a first capacitor and a second capacitor are provided on the third skeleton.

[0014] In some embodiments, the material of the first thermal insulation plug and the second thermal insulation plug is PEEK material.

[0015] In some embodiments, the internal heat absorber of the first heat absorber, the second heat absorber, and the third heat absorber is made of Wood's metal.

[0016] In some embodiments, the first desiccant module and the second desiccant module are further included, and the first desiccant module and the second desiccant module are arranged on the third skeleton, wherein the first desiccant module and the second desiccant module adopt a diameter range of of desiccant.

[0017] It can be seen from the above technical solution that the ultra-high temperature electronic circuit skeleton structure for well logging disclosed by the present invention can use silicone oil as a uniform cooling medium in the oil circuit cavity provided inside the skeleton structure body after long-term operation in a high temperature and high pressure environment. By setting the oil temperature of the input silicone oil and its own circulation flow, the internal temperature of the electronic circuit can be uniformly reduced after the operation is completed, so that the circuit board and electronic devices are uniformly cooled, and thus the reliability performance of the electronic node for rotating well wall coring using the ultra-high temperature electronic circuit skeleton structure for well logging can be directly improved. At the same time, the electronic node can meet the operation needs of multiple wells in a short time, thereby improving the high utilization rate of the electronic node instrument.

[0018] Summary of the Figures

[0019] FIG1 is a schematic cross-sectional view of an ultra-high temperature electronic circuit skeleton structure for well logging according to an embodiment of the present disclosure;

[0020] FIG2 is a schematic structural diagram of a sealed connecting column according to an embodiment of the present disclosure;

[0021] FIG3 is an enlarged schematic diagram of the structure of the ultra-high temperature electronic circuit skeleton structure for well logging shown in FIG1 ;

[0022] FIG4 is an enlarged schematic diagram of the structure at position B of the ultra-high temperature electronic circuit skeleton structure for well logging shown in FIG1 ;

[0023] FIG5 is a schematic front view of the structure of the ultra-high temperature electronic circuit skeleton for well logging according to an embodiment of the present disclosure;

[0024] FIG6 is a schematic rear view of the ultra-high temperature electronic circuit skeleton structure for well logging according to an embodiment of the present disclosure.

[0025] Preferred embodiments of the present disclosure

[0026] In order to better understand the purpose, structure and function of the present disclosure, the following further describes in detail the ultra-high temperature electronic circuit skeleton structure for well logging disclosed in the present disclosure in conjunction with the accompanying drawings.

[0027] FIG1 shows a cross-sectional view of an ultra-high temperature electronic circuit skeleton structure 100 for well logging according to an embodiment of the present disclosure. As shown in FIG1 , the ultra-high temperature electronic circuit skeleton structure 100 for well logging comprises a plurality of short sections 10, each of which is provided with a plurality of circuit boards and electronic components. The short sections 10 are sequentially connected and docked to form a skeleton structure body. A wiring harness fixing nut 1 is provided at one end of the skeleton structure body, and a connector 2 is provided at the other end of the skeleton structure body. An oil circuit lumen 3 is provided within the skeleton structure body. An oil circuit lumen 3 is formed within the oil circuit lumen 3, and interconnected oil filling lumen 31 and oil return lumen 32 are formed therein. The oil filling port 311 of the oil filling lumen 31 and the oil return port 321 of the oil return lumen 32 are both provided on the connector 2. The end where the oil filling lumen 31 and the oil return lumen 32 connect is located near the wiring harness fixing nut 1. The circuit boards and electronic components are disposed between the oil filling lumen 31 and the oil return lumen 32.

[0028] According to the ultra-high temperature electronic circuit skeleton structure 100 for well logging according to the embodiment of the present disclosure, after long-term operation in a high temperature and high pressure environment, silicone oil can be input into the oil circuit lumen 3 provided inside the skeleton structure body through the oil injection port 311 and the oil return port 321, so as to use silicone oil as a uniform cooling medium. The circuit board and electronic components are arranged between the oil injection oil circuit lumen 31 and the oil return oil circuit lumen 32. By setting the oil temperature of the input silicone oil and its own circulation flow, the temperature inside the electronic circuit can be uniformly reduced after the operation is completed, so that the circuit board and electronic components are uniformly cooled, and the reliability of the electronic node for rotating well wall coring using the ultra-high temperature electronic circuit skeleton structure 100 for well logging can be directly improved. At the same time, the electronic node can meet the operation requirements of multiple wells in a short period of time, thereby improving the high utilization rate of the electronic node instrument.

[0029] Continuing with Figures 1 and 2, in some embodiments, sub-oil lumens may be formed on a plurality of pup joint structures 10. When the plurality of pup joint structures 10 are fixedly connected, the sub-oil lumens are connected to form an oil injection lumen 31 and an oil return lumen 32. A sealing connecting post 4 is provided in the butted ends of the sub-oil lumens of each pup joint structure 10. Both ends of the sealing connecting post 4 are sealingly inserted into the respective sub-oil lumens, thereby ensuring sealed communication between the sub-oil lumens.

[0030] In the present disclosure, an axially through oil hole is formed in the sealing connecting column 4, and an annular groove 41 is symmetrically formed on the outer peripheral wall of the sealing connecting column 4, and the annular groove 41 is used to set the sealing ring. The two ends of the sealing connecting column 4 are sealed and inserted into each sub-oil circuit lumen to connect each sub-oil circuit lumen, maintaining the sealing while facilitating the connection of the sub-oil circuit lumen. In addition, by connecting the sub-oil circuit lumen in several short-section structures 10 to form the oil injection oil circuit lumen 31 and the oil return oil circuit lumen 32, it is also possible to facilitate the processing of the oil circuit lumen 3. At the same time, the number of short-section structures 10 can be further increased or reduced when necessary, which will also affect the oil injection oil circuit lumen 31 and the oil return oil circuit lumen 32.

[0031] 3 , in some embodiments, one end connecting the oil injection lumen 31 and the oil return lumen 32 may be constructed as a bent lumen structure 33 to reduce the influence of the oil channel damping of the oil lumen 3 on the cooling effect.

[0032] Continuing with FIG3 , it is further preferred that the bent lumen structure 33 be configured such that the oil injection lumen 31 and the oil return lumen 32 are each bent at an angle of 120° and then butted together at a 120° angle. This configuration, based on simulation analysis, shows that the oil injection lumen 31 and the oil return lumen 32 are each bent at an angle of 120° and then butted together at a 120° angle, achieving three 120° angle connections. This minimizes the impact of the oil channel damping of the oil lumen 3 on the cooling effect.

[0033] Please refer to Figures 1 and 4. In some embodiments, a process hole 101 is formed on the short section structure 10 at a position relative to the bent portion of the oil injection oil line lumen 31 and the oil return oil line lumen 32, and a dead plug 35 is fixed in the process hole 101. By providing the process hole 101, it is possible to facilitate the processing of the oil line lumen 3 after bending at an angle of 120° in the short section structure 10, thereby improving the convenience of processing. The dead plug 35 is used to seal the process hole 101. In this application, since the oil pressure there is usually relatively large, the dead plug 35 and the process hole 101 can be interference fit, and welding can be performed after they are assembled in place.

[0034] 4 , in some embodiments, an oil filling one-way valve is further provided in the oil filling port 311 , and a process hole 101 is formed on the connector 2 , which is respectively connected to the oil filling port 311 and the oil return port 321 , and a plug 36 is provided on the process hole 101 .

[0035] In the present disclosure, the plug 36 is connected to the short section structure 10 by threads and an O-ring is used for sealing.

[0036] 5 and 6 , in some embodiments, a plurality of short section structures 10 may include a first thermal insulation plug 11, a fixing sleeve 12, a first skeleton 13, a first heat absorber 16, a second skeleton 17, a second heat absorber 111, a third skeleton 123, a third heat absorber 115, and a second thermal insulation plug 116, which are fixedly connected in sequence; the first thermal insulation plug 11 is connected to the wiring harness fixing nut 1, the second thermal insulation plug 116 is connected to the connector 2, and the oil circuit lumen 3 is formed in the first skeleton 13, the first heat absorber 16, the second skeleton 17, the second heat absorber 111, the third skeleton 123, the third heat absorber 115, and the second thermal insulation plug 116. Among them, a transformer 14 and a roller 15 are provided on the first skeleton 13, and a first circuit board 18, a second circuit board 19, a third circuit board 114, an isolated power supply 118, a fourth circuit board 117 and a fifth circuit board 119 are provided on the second skeleton 17; a sixth circuit board 120, a seventh circuit board 124, a first capacitor 112 and a second capacitor 121 are provided on the third skeleton 123.

[0037] In this disclosure, several short sections 10 are secured radially with six bolts. In this disclosure, the first frame 13, the second frame 17, and the third frame 123 can all be made of copper, a material with high thermal conductivity and strength. In this disclosure, the first capacitor 112 and the second capacitor 121 serve the same function: providing overload protection for the two different motor drive modules.

[0038] In some embodiments, the first thermal insulation plug 11 and the second thermal insulation plug 116 may be made of PEEK. With this configuration, the first thermal insulation plug 11 and the second thermal insulation plug 116 are made of PEEK, and thermal insulation cotton is used between the first thermal insulation plug 11 and the second thermal insulation plug 116 for thermal insulation.

[0039] In some embodiments, the internal heat absorber of the first heat absorber 16, the second heat absorber 111 and the third heat absorber 115 can be made of Wood's metal. With this configuration, the internal heat absorber of the first heat absorber 16, the second heat absorber 111 and the third heat absorber 115 can be made of a material such as Wood's metal with a high specific heat capacity.

[0040] In some embodiments, the first desiccant module 113 and the second desiccant module 122 are further included. The first desiccant module 113 and the second desiccant module 122 are arranged on the third skeleton 123. The first desiccant module 113 and the second desiccant module 122 have a diameter range of With this configuration, the first desiccant module 113 and the second desiccant module 122 can use desiccant with strong moisture absorption capacity to remove moisture from the electronic circuit.

[0041] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this disclosure belongs.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0043] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of this disclosure, "plurality" means more than two, unless otherwise specifically defined.

[0044] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure, and they should all be included in the scope of the claims and specification of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An ultra-high temperature electronic circuit skeleton structure for well logging, characterized in that: It comprises a plurality of short section structures, on which a plurality of circuit boards and electronic components are respectively arranged, and the plurality of short section structures are butt-jointed and fixedly connected in sequence to form a skeleton structure body, one end of the skeleton structure body is provided with a wiring harness fixing nut, and the other end of the skeleton structure body is provided with a joint, wherein an oil circuit lumen is provided inside the skeleton structure body, and a connected oil filling circuit lumen and an oil return circuit lumen are formed in the oil circuit lumen, the oil filling port of the oil filling circuit lumen and the oil return port of the oil return circuit lumen are both arranged on the joint, the end at which the oil filling circuit lumen and the oil return circuit lumen are connected is arranged on a side close to the wiring harness fixing nut, and the circuit board and the electronic components are both arranged between the oil filling circuit lumen and the oil return circuit lumen.

2. The ultra-high temperature electronic circuit skeleton structure for well logging according to claim 1, characterized in that: Sub-oil circuit lumens are formed on several of the short-section structures. After the several short-section structures are fixedly connected, the sub-oil circuit lumens are connected to form the oil injection circuit lumen and the oil return circuit lumen, wherein a sealing connecting column is provided in the butt end of the sub-oil circuit lumen of each of the short-section structures, and both ends of the sealing connecting column are sealingly inserted into each of the sub-oil circuit lumens to make each of the sub-oil circuit lumens sealed and connected.

3. The ultra-high temperature electronic circuit skeleton structure for well logging according to claim 1 or 2, characterized in that: One end of the oil injection oil circuit lumen connected to the oil return oil circuit lumen is constructed as a bent lumen structure.

4. The ultra-high temperature electronic circuit skeleton structure for well logging according to claim 3, characterized in that: The bent lumen structure is constructed such that the oil injection oil circuit lumen and the oil return oil circuit lumen are bent at an angle of 120° respectively and then butted against each other at an angle of 120°.

5. The ultra-high temperature electronic circuit skeleton structure for well logging according to claim 4, characterized in that: A process hole is formed on the short section structure at a position corresponding to the bending portion of the oil injection oil line lumen and the oil return oil line lumen, and a dead plug is fixed in the process hole.

6. The ultra-high temperature electronic circuit skeleton structure for well logging according to claim 1 or 2, characterized in that: An oil injection one-way valve is also arranged in the oil injection port, and a process hole which is respectively connected with the oil injection port and the oil return port is formed on the joint, and a plug is arranged on the process hole.

7. The ultra-high temperature electronic circuit skeleton structure for well logging according to claim 1, characterized in that: The plurality of short section structures include a first insulation plug, a fixing sleeve, a first frame, a first heat absorber, a second frame, a second heat absorber, a third frame, a third heat absorber, and a second insulation plug which are fixedly connected in sequence; the first insulation plug is connected to the wiring harness fixing nut, the second insulation plug is connected to the joint, and the oil circuit lumen is formed in the first frame, the first heat absorber, the second frame, the second heat absorber, the third frame, the third heat absorber, and the second insulation plug; wherein a transformer and a roller are arranged on the first frame, a first circuit board, a second circuit board, a third circuit board, an isolated power supply, a fourth circuit board, and a fifth circuit board are arranged on the second frame; and a sixth circuit board, a seventh circuit board, a first capacitor, and a second capacitor are arranged on the third frame.

8. The ultra-high temperature electronic circuit skeleton structure for well logging according to claim 7, characterized in that: The first thermal insulation plug and the second thermal insulation plug are made of PEEK material.

9. The ultra-high temperature electronic circuit skeleton structure for well logging according to claim 7, characterized in that: The internal heat absorber of the first heat absorber, the second heat absorber and the third heat absorber is made of Wood's metal.

10. The ultra-high temperature electronic circuit skeleton structure for well logging according to claim 7, characterized in that: The first desiccant module and the second desiccant module are provided on the third frame, wherein the first desiccant module and the second desiccant module have a diameter range of of desiccant.

Images