A synchronous inter-well electromagnetic probe magnetic field detection calibration device and operation method

Abstract

The application provides a synchronous inter-well electromagnetic probe magnetic field detection calibration device, which comprises a multilayer magnetic shielding silo with a cylindrical overall shape and a hollow interior; a multilayer non-magnetic silo arranged at the center of the multilayer magnetic shielding silo and used for placing an electromagnetic probe to be detected; and a synchronous temperature regulator connected with the multilayer magnetic shielding silo and used for conveying temperature regulation gas to the multilayer magnetic shielding silo. The application has a simple structure and can easily realize the detection of the measured magnetic field strength, direction and magnetic noise of the electromagnetic probe, and can be used for calibrating the electromagnetic probe and determining the measurement correction parameters, thereby improving the well logging precision of the electromagnetic probe. The application can not only be used for the detection under the control of a synchronous signal, but also can be used for the detection of the electromagnetic probe and the antenna without the control of a synchronous signal.

Description

Technical Field

[0001] This invention relates to the field of applied geophysical logging technology, and more specifically, to a synchronous inter-well electromagnetic probe magnetic field detection and calibration device and operating method. Background Technology

[0002] Electromagnetic logging receiver probes, especially inter-well electromagnetic receiver probes, are highly sensitive magnetic antennas and related acquisition components. The quality of these probes directly affects the measurement quality of electromagnetic logging.

[0003] Previously, electromagnetic receiving probes all used an outer scale ring (or simulated strata). This method could not quantitatively detect the probe's precision and accuracy, nor could it detect magnetic noise, let alone detect changes in the probe's performance with temperature.

[0004] Therefore, the present invention provides a device and method for calibrating and operating a synchronous inter-well electromagnetic probe magnetic field detection. Summary of the Invention

[0005] To address the above problems, this invention provides a synchronous inter-well electromagnetic probe magnetic field detection and calibration device, the device comprising:

[0006] The multi-layered magnetically shielded cylindrical chamber has an overall cylindrical shape.

[0007] A multi-layer non-magnetic circular chamber is located at the center of the multi-layer magnetically shielded circular chamber and is used to place the electromagnetic probe to be tested.

[0008] A synchronous temperature controller, which is connected to the multi-layer magnetically shielded cylindrical chamber, is used to deliver temperature-regulating gas to the multi-layer magnetically shielded cylindrical chamber.

[0009] According to one embodiment of the present invention, the multi-layer magnetically shielded cylindrical chamber comprises:

[0010] The multi-layer magnetic shielding metal plate has a multi-layer cylindrical structure and is hollow inside.

[0011] The first opening door is located at the top of the multi-layer magnetically shielded cylindrical chamber and can be folded open or closed.

[0012] The first wiring hole is located in the middle of the first opening door and is used for wiring and the circulation of the temperature-controlled gas.

[0013] According to one embodiment of the present invention, the multi-layer non-magnetic cylindrical chamber comprises:

[0014] A high-strength shaping material layer is disposed in the outermost and innermost layers of the multi-layer non-magnetic cylindrical chamber;

[0015] A thermal insulation material layer is disposed in the outermost and innermost layers of the multi-layer non-magnetic cylindrical chamber;

[0016] A circulation layer, which is disposed in the middle hollow interlayer of the multi-layer non-magnetic cylindrical chamber, is used for the circulation of the temperature-controlled gas;

[0017] Gas circulation holes are evenly distributed on all layers of the multi-layer non-magnetic cylindrical chamber except for the outermost and second outermost layers.

[0018] According to one embodiment of the present invention, the multi-layer non-magnetic cylindrical chamber comprises:

[0019] A temperature probe is installed inside the multi-layered non-magnetic cylindrical chamber to monitor the internal temperature of the multi-layered non-magnetic cylindrical chamber.

[0020] The second opening door is located at the top of the multi-layered non-magnetic cylindrical compartment and can be folded open or closed.

[0021] The second wiring hole is located in the middle of the second opening door and is used for wiring.

[0022] The gas circulation inlet channel is located at the edge of the second opening door.

[0023] According to one embodiment of the present invention, the synchronous temperature controller comprises:

[0024] Synchronization signal demodulation circuit, which is used to demodulate the received synchronization signal from the outside to generate a demodulated signal;

[0025] A temperature acquisition and control circuit, which is connected to the synchronous signal demodulation circuit, is used to acquire temperature based on the demodulated signal and generate a temperature control signal according to a preset temperature value.

[0026] According to one embodiment of the present invention, the synchronous temperature controller comprises:

[0027] A temperature-controlled gas generating device, used to generate the temperature-controlled gas according to the temperature control signal;

[0028] A ventilation duct for delivering the temperature-controlled gas to the multi-layer magnetically shielded cylindrical chamber;

[0029] An insulation partition, which is installed inside the ventilation duct, is used to open the partition when heating and close the partition when insulating.

[0030] According to one embodiment of the present invention, when detecting and calibrating the magnetic field strength and direction of the electromagnetic probe to be tested, the device further comprises:

[0031] A spiral magnetic field detection tube is located in the middle of the multi-layered non-magnetic circular chamber and is used to place the electromagnetic probe to be tested.

[0032] According to one embodiment of the present invention, the spiral magnetic field detection tube comprises:

[0033] A fiberglass tube, with a hollow interior, is used to house the electromagnetic probe to be tested;

[0034] The enameled alloy wire is wound around the fiberglass tube at equal intervals and with equal torque along the spiral grooves, and a multi-layer winding method is used during the winding process.

[0035] According to another aspect of the present invention, a method for calibrating and operating a synchronous inter-well electromagnetic probe magnetic field detection is also provided, which is performed by a synchronous inter-well electromagnetic probe magnetic field detection and calibration device as described in any of the preceding claims, the method comprising the following steps:

[0036] S51. Send the electromagnetic probe to be tested into the multi-layer non-magnetic circular chamber and place it in the center;

[0037] S52. A synchronization signal is sent from the ground system, so that the synchronization signal simultaneously enters the electromagnetic probe to be tested and the synchronization temperature controller.

[0038] S53. Set the predetermined temperature. After several synchronization signal cycles, the synchronization temperature controller enters the heating and temperature adjustment process.

[0039] S54. After reaching the predetermined temperature and maintaining it constant for several synchronization signal cycles, the synchronization temperature controller stops heating.

[0040] S55. After several synchronization signal cycles, the magnetic noise is measured by the electromagnetic probe to be tested.

[0041] S56. Repeat steps S53-S55 until the magnetic noise measurement task of the electromagnetic probe under test is completed at all temperatures.

[0042] According to another aspect of the invention, a storage medium is also provided, which includes a series of instructions for performing the steps of the method as described in any of the preceding claims.

[0043] This invention provides a synchronous inter-well electromagnetic probe magnetic field detection and calibration device and operating method. It features a simple structure and facilitates the detection of magnetic field strength, direction, and magnetic noise of the electromagnetic probe. It can be used for calibrating the electromagnetic probe and determining measurement correction parameters, thereby improving the logging accuracy of the electromagnetic probe. It is applicable not only to detection under synchronization signal control but also to the detection of the electromagnetic probe and antenna without synchronization signal control.

[0044] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0045] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0046] Figure 1 A schematic diagram of a synchronous inter-well electromagnetic probe magnetic field detection and calibration device according to an embodiment of the present invention is shown.

[0047] Figure 2 A schematic diagram of a multi-layer magnetically shielded cylindrical structure according to an embodiment of the present invention is shown;

[0048] Figure 3 A schematic diagram of a multi-layer non-magnetic cylindrical structure according to an embodiment of the present invention is shown;

[0049] Figure 4 A schematic diagram of a spiral magnetic field detection tube structure according to an embodiment of the present invention is shown;

[0050] Figure 5 A flowchart of a method for detecting and calibrating magnetic noise of an electromagnetic probe under test according to an embodiment of the present invention is shown; and

[0051] Figure 6 A flowchart of a method for detecting and calibrating the magnetic field strength and direction of an electromagnetic probe under test according to an embodiment of the present invention is shown.

[0052] In the accompanying drawings, the same parts use the same reference numerals. Also, the drawings are not drawn to scale.

[0053] The meanings of the reference numerals in the attached figures are as follows: 1-Helical magnetic field detection tube; 2-Multi-layer non-magnetic cylindrical chamber; 3-Multi-layer magnetically shielded cylindrical chamber; 4-Synchronous temperature controller; 11-Fiberglass pipe; 12-Enameled alloy wire; 13-Helical groove; 21-High-strength shaping material layer; 22-Insulation material layer; 23-Circulation layer; 24-Gas circulation hole; 25-Temperature probe; 26-Second opening door; 27-Second wiring hole; 28-Gas circulation inlet channel; 31-Multi-layer magnetically shielded metal plate; 32-First opening door; 33-First wiring hole; 41-Synchronous signal demodulation circuit; 42-Temperature acquisition and control circuit; 43-Heat source; 44-Fan; 45-Ventilation duct; 46-Insulation partition. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0055] Figure 1 A schematic diagram of a synchronous well-to-well electromagnetic probe magnetic field detection and calibration device according to an embodiment of the present invention is shown.

[0056] like Figure 1 As shown, a synchronous inter-well electromagnetic probe magnetic field detection and calibration device includes: a multi-layer magnetically shielded cylindrical chamber 3, a multi-layer non-magnetic cylindrical chamber 2, and a synchronous temperature controller 4. Specifically, the synchronous inter-well electromagnetic probe magnetic field detection and calibration device, composed of the multi-layer magnetically shielded cylindrical chamber 3, the multi-layer non-magnetic cylindrical chamber 2, and the synchronous temperature controller 4, can be used for magnetic noise detection and calibration of the electromagnetic probe under test.

[0057] like Figure 1 As shown, the multi-layer magnetically shielded cylindrical chamber 3 has an overall cylindrical shape. Specifically, the multi-layer magnetically shielded cylindrical chamber 3 includes: a multi-layer magnetically shielded metal plate 31, a first opening door 32, and a first wiring hole 33.

[0058] In one embodiment, such as Figure 2 As shown, the multi-layer magnetic shielding metal plate 31 has a multi-layer cylindrical structure and is hollow inside. Specifically, the multi-layer magnetic shielding cylindrical chamber 3 contains more than 8 layers of multi-layer magnetic shielding metal plates 31 with a thickness of 2-4 mm.

[0059] In one embodiment, such as Figure 2 As shown, the first opening door 32 is located on the top of the multi-layer magnetic shielding cylindrical compartment 3 and can be folded open or closed. Specifically, the first opening door 32 is located on the top / bottom surface of the cylinder of the multi-layer magnetic shielding cylindrical compartment 3 and can be folded open / closed.

[0060] In one embodiment, such as Figure 2 As shown, the first wiring hole 33 is located in the middle of the first opening door 32, and is used for wiring and temperature-controlled gas circulation. Specifically, the first opening door 32 has a first wiring hole 33 in the middle, which is used for wiring and can also be used for the passage of temperature-controlled gas.

[0061] like Figure 1 As shown, the multi-layer non-magnetic cylindrical chamber 2 is located at the center of the multi-layer magnetically shielded cylindrical chamber 3 and is used to place the electromagnetic probe to be tested. Specifically, when performing magnetic noise detection and calibration of the electromagnetic probe to be tested, the electromagnetic probe to be tested can be placed in the multi-layer non-magnetic cylindrical chamber 2. Furthermore, the multi-layer non-magnetic cylindrical chamber 2 is also a multi-layer structure, with a diameter and length smaller than the multi-layer magnetically shielded cylindrical chamber 3, and is located at the center of the multi-layer magnetically shielded cylindrical chamber 3.

[0062] like Figure 3 As shown, the multi-layer non-magnetic cylindrical chamber 2 includes: a high-strength shaping material layer 21, a thermal insulation material layer 22, a circulation layer 23, a gas circulation hole 24, a temperature probe 25, a second opening door 26, a second wiring hole 27, and a gas circulation inlet channel 28.

[0063] In one embodiment, such as Figure 3As shown, the high-strength shaping material layer 21 is disposed on the outermost and innermost layers of the multi-layer non-magnetic cylindrical chamber 2. Specifically, the material used for the high-strength shaping material layer 21 can be nylon or fiberglass.

[0064] In one embodiment, such as Figure 3 As shown, the insulation material layer 22 is disposed in the outermost and innermost layers of the multi-layer non-magnetic cylindrical chamber 2. Specifically, the material used for the insulation material layer 22 can be set according to actual needs, and the present invention does not impose any restrictions on this.

[0065] In one embodiment, such as Figure 3 As shown, the circulation layer 23 is disposed in the hollow interlayer in the middle of the multi-layer non-magnetic cylindrical chamber 2, and is used for temperature-controlled gas circulation. Specifically, the hollow interlayer in the middle of the multi-layer non-magnetic cylindrical chamber 2 is the circulation layer 23, which is used for temperature-controlled gas circulation.

[0066] In one embodiment, such as Figure 3 As shown, gas circulation holes 24 are evenly distributed on all layers of the multi-layer non-magnetic cylindrical chamber 2 except for the outermost and second-outermost layers. Specifically, gas circulation holes 24 are evenly distributed in the multi-layer non-magnetic cylindrical chamber 2 except for the outermost and second-outermost layers.

[0067] In one embodiment, such as Figure 3 As shown, temperature probes 25 are installed inside the multi-layer non-magnetic cylindrical chamber 2 to monitor the internal temperature of the multi-layer non-magnetic cylindrical chamber 2. Specifically, the multi-layer non-magnetic cylindrical chamber 2 is equipped with multiple temperature probes 25 to monitor the temperature inside the multi-layer non-magnetic cylindrical chamber 2 and obtain measured temperature data.

[0068] In one embodiment, such as Figure 3 As shown, the second opening door 26 is located at the top of the multi-layer non-magnetic cylindrical compartment 2 and can be folded open or closed. Specifically, the second opening door 26 is located on the top / bottom surface of the cylinder of the multi-layer non-magnetic cylindrical compartment 2 and can be folded open / closed, corresponding to the first opening door 32.

[0069] In one embodiment, such as Figure 3 As shown, the second wiring hole 27 is located in the middle of the second opening door 26 for wiring. Specifically, the second wiring hole 27 is provided in the middle of the second opening door 26 for connecting the electromagnetic probe to be tested for power supply and temperature acquisition.

[0070] In one embodiment, such as Figure 3 As shown, the gas circulation inlet channel 28 is located at the edge of the second opening door 26. Specifically, the gas circulation inlet channel 28 is provided at the edge of the second opening door 26.

[0071] like Figure 1As shown, the synchronous temperature controller 4 is connected to the multi-layer magnetically shielded cylindrical chamber 3 and is used to deliver temperature-regulating gas to the multi-layer magnetically shielded cylindrical chamber 3.

[0072] like Figure 1 As shown, the synchronous temperature controller 4 includes: a synchronous signal demodulation circuit 41, a temperature acquisition and control circuit 42, a temperature regulating gas generating device (composed of a heat source 43 and a fan 44), a ventilation duct 45, and a thermal insulation partition 46.

[0073] In one embodiment, such as Figure 1 As shown, the synchronization signal demodulation circuit 41 is used to demodulate the received synchronization signal from the outside to generate a demodulated signal. Specifically, the synchronization signal comes from the ground system and can be a synchronization signal source acting on the electromagnetic probe under test.

[0074] In one embodiment, such as Figure 1 As shown, the temperature acquisition and control circuit 42 is connected to the synchronous signal demodulation circuit 41, and is used to acquire temperature based on the demodulated signal and generate a temperature control signal according to the preset temperature value. Specifically, the temperature acquisition and control circuit 42 controls the temperature probe 25 to acquire temperature data, obtain the measured temperature data, and then generates a temperature control signal by combining it with the preset temperature value.

[0075] In one embodiment, such as Figure 1 As shown, the temperature-regulating gas generating device (consisting of a heat source 43 and a fan 44) is used to generate temperature-regulating gas according to the temperature control signal. Specifically, after the temperature control signal is amplified and driven, the IGBT drives the motor to generate the temperature-regulating gas through the heat source 43 and the fan 44, thereby completing the heating / cooling and hot / cold air circulation.

[0076] In one embodiment, such as Figure 1 As shown, the ventilation duct 45 is used to deliver temperature-controlled gas to the multi-layer magnetically shielded cylindrical chamber 3. Specifically, the temperature-controlled gas is delivered to the multi-layer magnetically shielded cylindrical chamber 3 connected to it via the ventilation duct 45 and the insulation partition 46.

[0077] In one embodiment, such as Figure 1 As shown, the insulation partition 46 is installed inside the ventilation duct 45, and is used to open the partition when heating and close the partition when heat preservation. Specifically, the insulation partition 46 is located in the connection channel (ventilation duct 45) between the multi-layer magnetic shielded cylindrical chamber 3 and the synchronous temperature controller 4. The insulation partition 46 is opened when heating and closed when heat preservation.

[0078] Figure 4 A schematic diagram of a spiral magnetic field detection tube structure according to an embodiment of the present invention is shown.

[0079] In one embodiment, when detecting and calibrating the magnetic field strength and direction of the electromagnetic probe to be tested, a synchronous inter-well electromagnetic probe magnetic field detection and calibration device includes: a spiral magnetic field detection tube 1, a multi-layer magnetically shielded cylindrical chamber 3, a multi-layer non-magnetic cylindrical chamber 2, and a synchronous temperature controller 4.

[0080] like Figure 4 As shown, the spiral magnetic field detection tube 1 is located in the middle of the multi-layer non-magnetic cylindrical chamber 2, and can be removed / set as needed to hold the electromagnetic probe to be tested. In one embodiment, the spiral magnetic field detection tube includes: a fiberglass tube 11 and an enameled alloy wire 12.

[0081] In one embodiment, such as Figure 4 As shown, the fiberglass tube 11 has a hollow interior structure and is used to house the electromagnetic probe to be tested. Specifically, the fiberglass tube 11 has a hollow interior structure and is used to house the detection antenna or electromagnetic probe to be tested.

[0082] In one embodiment, such as Figure 4 As shown, the enameled alloy wire 12 is wound around the fiberglass tube 11 at equal intervals and with equal torque along the spiral grooves 13, using a multi-layer winding method. Specifically, the enameled alloy wire 12 is wound around the outer shell of the fiberglass tube 11 at equal intervals and with equal torque along the spiral grooves 13, using a multi-layer winding method, and the enameled alloy wire 12 is made of a temperature-insensitive material.

[0083] This invention utilizes a multi-layered non-magnetic cylindrical chamber 2 with an internal spiral magnetic field detection tube 1, combined with heating, to complete the detection of the inter-well electromagnetic receiving probe and antenna. This invention designs a multi-layered non-magnetic cylindrical chamber 2 with an internal spiral magnetic field detection tube 1, combined with a multi-layered magnetically shielded chamber 3, heated to complete the detection of the logging receiving electromagnetic probe and antenna, thereby ensuring the measurement accuracy of the probe.

[0084] Figure 5 A flowchart of a method for detecting and calibrating magnetic noise of an electromagnetic probe under test according to an embodiment of the present invention is shown.

[0085] In one embodiment, a synchronous well-to-well electromagnetic probe magnetic field detection and calibration device, consisting of a multi-layer magnetically shielded cylindrical chamber 3, a multi-layer non-magnetic cylindrical chamber 2, and a synchronous temperature controller 4, can be used for magnetic noise detection and calibration of the electromagnetic probe under test.

[0086] like Figure 5 As shown, in step S51, the electromagnetic probe to be tested is placed into the multi-layer non-magnetic circular chamber 2 and centered. Specifically, the electromagnetic probe to be tested is placed into the non-magnetic circular chamber 2, centered, and the connecting cable is led out through the opening of the chamber door of the non-magnetic circular chamber 2. The chamber door is then closed and sealed.

[0087] like Figure 5As shown, in step S52, a synchronization signal is sent from the ground system, causing the synchronization signal to simultaneously enter both the electromagnetic probe under test and the synchronization temperature controller 4. Specifically, the ground system is connected so that the synchronization signal sent from the ground system simultaneously enters both the electromagnetic probe under test and the synchronization temperature controller 4.

[0088] like Figure 5 As shown, in step S53, a predetermined temperature is set, and after several synchronization signal cycles, the synchronous temperature controller 4 enters the heating and temperature adjustment process. Specifically, after setting the predetermined temperature and combining it with the measured temperature data, and after several synchronization signal cycles, the fan 44 is turned on and the insulation partition 46 is opened, thus entering the heating and temperature adjustment program.

[0089] like Figure 5 As shown, in step S54, after reaching the predetermined temperature and maintaining it for several synchronization signal cycles, the synchronous temperature controller 4 stops heating / cooling. Specifically, after reaching the predetermined temperature and maintaining it for several synchronization signal cycles, the fan 44 and heat source 43 are turned off, and the insulation partition 46 is closed.

[0090] like Figure 5 As shown, in step S55, after several synchronization signal cycles, the magnetic noise is measured by the electromagnetic probe to be tested.

[0091] like Figure 5 As shown, in step S56, steps S53-S55 are repeated until the magnetic noise measurement task of the electromagnetic probe under test is completed at all temperatures. Specifically, it is determined whether the test has been completed at all temperatures. If the determination result is yes, the test ends; if the determination result is no, the process returns to step S53.

[0092] Figure 6 A flowchart of a method for detecting and calibrating the magnetic field strength and direction of an electromagnetic probe under test according to an embodiment of the present invention is shown.

[0093] In one embodiment, a synchronous well-to-well electromagnetic probe magnetic field detection and calibration device, consisting of a spiral magnetic field detection tube 1, a multi-layer magnetically shielded cylindrical chamber 3, a multi-layer non-magnetic cylindrical chamber 2, and a synchronous temperature controller 4, can be used to detect and calibrate the magnetic field strength and direction of the electromagnetic probe under test.

[0094] like Figure 6 As shown, in step S61, the electromagnetic probe to be tested is sent into the spiral magnetic field detection tube 1 located in the multi-layer non-magnetic circular chamber 2, placed in the center, and the connecting cable is led out through the chamber door opening of the multi-layer non-magnetic circular chamber 2. The doors of the multi-layer magnetic shielding circular chamber 3 and the multi-layer non-magnetic circular chamber 2 are closed and sealed.

[0095] like Figure 6As shown, in step S62, a synchronization signal is sent from the ground system, causing the synchronization signal to simultaneously enter both the electromagnetic probe under test and the synchronization temperature controller 4. Specifically, the ground system is connected so that the synchronization signal sent from the ground system simultaneously enters both the electromagnetic probe under test and the synchronization temperature controller 4.

[0096] like Figure 6 As shown, in step S63, a predetermined temperature is set, and after several synchronization signal cycles, the synchronous temperature controller 4 enters the heating and temperature adjustment process. Specifically, after setting the predetermined temperature and combining it with the measured temperature data, and after several synchronization signal cycles, the fan 44 is turned on and the insulation partition 46 is opened, thus entering the heating and temperature adjustment program.

[0097] like Figure 6 As shown, in step S64, after reaching the predetermined temperature and maintaining it for several synchronization signal cycles, the synchronous temperature controller 4 stops heating / cooling. Specifically, after reaching the predetermined temperature and maintaining it for several synchronization signal cycles, the fan 44 and heat source 43 are turned off, and the insulation partition 46 is closed.

[0098] like Figure 6 As shown, in step S65, after several synchronization signal cycles, different milliampere or microampere currents are supplied to the spiral magnetic field detection tube 1, so that the electromagnetic probe under test receives the magnetic field signal and calculates the measured magnetic field signal to detect the magnetic field of the electromagnetic probe under test.

[0099] like Figure 6 As shown, in step S66, steps S63-S65 are repeated until the intensity and direction of the electromagnetic probe to be tested are detected at all temperatures. Specifically, it is determined whether the detection at all temperatures has been completed. If the determination result is yes, the detection ends; if the determination result is no, the process returns to step S63.

[0100] The synchronous inter-well electromagnetic probe magnetic field detection and calibration device and operating method provided by this invention can also be used with a computer-readable storage medium. The storage medium stores a computer program, and executing the computer program runs the synchronous inter-well electromagnetic probe magnetic field detection and calibration operating method. The computer program can execute computer instructions, which include computer program code. The computer program code can be in the form of source code, object code, executable file, or some intermediate form, etc.

[0101] Computer-readable storage media can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.

[0102] It should be noted that the contents of computer-readable storage media may be appropriately added to or subtracted from the contents according to the requirements of legislation and patent practice in a jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage media may not include electrical carrier signals and telecommunication signals.

[0103] In summary, the present invention provides a synchronous inter-well electromagnetic probe magnetic field detection and calibration device and operating method. It features a simple structure, easily enabling the detection of the magnetic field strength, direction, and magnetic noise of the electromagnetic probe. It can be used for calibrating the electromagnetic probe and determining measurement correction parameters, thereby improving the logging accuracy of the electromagnetic probe. Furthermore, it is applicable not only to detection under synchronous signal control but also to the detection of the electromagnetic probe and antenna without synchronous signal control.

[0104] It should be understood that the embodiments disclosed herein are not limited to the specific structures, processing steps, or materials disclosed herein, but should be extended to equivalent substitutions of these features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0105] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0106] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0107] The phrase "an embodiment" or "an embodiment" used in this specification means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Therefore, the phrase "an embodiment" or "an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0108] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

[0109] While the embodiments disclosed in this invention are as described above, the content is merely for the purpose of facilitating understanding of the invention and is not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and variations in form and detail of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection for this invention shall still be determined by the scope defined in the appended claims.

Claims

1. A synchronous inter-well electromagnetic probe magnetic field detection and calibration device, characterized in that, The device includes: The multi-layered magnetically shielded cylindrical chamber has an overall cylindrical shape. A multi-layer non-magnetic circular chamber is located at the center of the multi-layer magnetically shielded circular chamber and is used to place the electromagnetic probe to be tested. A synchronous temperature controller, which is connected to the multi-layer magnetically shielded cylindrical chamber, is used to deliver temperature-regulating gas to the multi-layer magnetically shielded cylindrical chamber; When detecting and calibrating the magnetic field strength and direction of the electromagnetic probe under test, the device further includes: a spiral magnetic field detection tube, which is disposed in the middle of the multi-layer non-magnetic cylindrical chamber for placing the electromagnetic probe under test; the spiral magnetic field detection tube includes: a fiberglass tube with a hollow internal structure for placing the electromagnetic probe under test; and an enameled alloy wire, which is wound around the fiberglass tube at equal intervals and with equal torque along the spiral grooves, using a multi-layer winding method during winding. The multi-layer non-magnetic cylindrical chamber comprises: a high-strength shaping material layer disposed on the outermost and innermost layers of the multi-layer non-magnetic cylindrical chamber; a thermal insulation material layer disposed on the second outermost and second innermost layers of the multi-layer non-magnetic cylindrical chamber; a circulation layer disposed in the middle hollow interlayer of the multi-layer non-magnetic cylindrical chamber for the circulation of the temperature-controlled gas; and gas circulation holes uniformly formed on the other layers of the multi-layer non-magnetic cylindrical chamber except for the outermost and second outermost layers. The device is used for detecting and calibrating the magnetic field strength and direction of the electromagnetic probe under test, and includes the following steps: S61. Send the electromagnetic probe to be tested into the spiral magnetic field detection tube located in the multi-layer non-magnetic circular chamber, place it in the center, and lead the connecting cable out through the chamber door opening of the multi-layer non-magnetic circular chamber. Close and seal the two-stage chamber doors of the multi-layer magnetic shielding circular chamber and the multi-layer non-magnetic circular chamber. S62. A synchronization signal is sent from the ground system, so that the synchronization signal simultaneously enters the electromagnetic probe to be tested and the synchronization temperature controller. S63. Set the predetermined temperature, and after several synchronization signal cycles, synchronize the temperature controller to enter the heating and temperature adjustment process; S64. After reaching the predetermined temperature and maintaining a constant temperature for several synchronization signal cycles, the temperature controller is synchronized to stop heating / cooling. S65. After several synchronization signal cycles, different milliampere or microampere currents are supplied to the spiral magnetic field detection tube, so that the electromagnetic probe under test receives the magnetic field signal and calculates the measured magnetic field signal to detect the magnetic field of the electromagnetic probe under test. S66. Repeat steps S63-S65 until the intensity and orientation of the electromagnetic probe under test are detected at all temperatures.

2. The synchronous inter-well electromagnetic probe magnetic field detection and calibration device as described in claim 1, characterized in that, The multi-layer magnetically shielded cylindrical chamber includes: The multi-layer magnetic shielding metal plate has a multi-layer cylindrical structure and is hollow inside. The first opening door is located at the top of the multi-layer magnetically shielded cylindrical chamber and can be folded open or closed. The first wiring hole is located in the middle of the first opening door and is used for wiring and the circulation of the temperature-controlled gas.

3. The synchronous inter-well electromagnetic probe magnetic field detection and calibration device as described in claim 1, characterized in that, The multi-layer non-magnetic cylindrical chamber comprises: A temperature probe is installed inside the multi-layered non-magnetic cylindrical chamber to monitor the internal temperature of the multi-layered non-magnetic cylindrical chamber. The second opening door is located at the top of the multi-layered non-magnetic cylindrical compartment and can be folded open or closed. The second wiring hole is located in the middle of the second opening door and is used for wiring. The gas circulation inlet channel is located at the edge of the second opening door.

4. The synchronous inter-well electromagnetic probe magnetic field detection and calibration device as described in claim 1, characterized in that, The synchronous temperature controller includes: Synchronization signal demodulation circuit, which is used to demodulate the received synchronization signal from the outside to generate a demodulated signal; A temperature acquisition and control circuit, which is connected to the synchronous signal demodulation circuit, is used to acquire temperature based on the demodulated signal and generate a temperature control signal according to a preset temperature value.

5. The synchronous inter-well electromagnetic probe magnetic field detection and calibration device as described in claim 4, characterized in that, The synchronous temperature controller includes: A temperature-controlled gas generating device, used to generate the temperature-controlled gas according to the temperature control signal; A ventilation duct for delivering the temperature-controlled gas to the multi-layer magnetically shielded cylindrical chamber; An insulation partition, which is installed inside the ventilation duct, is used to open the partition when heating and close the partition when insulating.

6. A method for calibrating and operating a synchronous inter-well electromagnetic probe for magnetic field detection, characterized in that, Performed by a synchronous inter-well electromagnetic probe magnetic field detection and calibration device as described in any one of claims 1-5, the method comprises the following steps: S51. Send the electromagnetic probe to be tested into the multi-layer non-magnetic circular chamber and place it in the center; S52. A synchronization signal is sent from the ground system, so that the synchronization signal simultaneously enters the electromagnetic probe to be tested and the synchronization temperature controller. S53. Set the predetermined temperature. After several synchronization signal cycles, the synchronization temperature controller enters the heating and temperature adjustment process. S54. After reaching the predetermined temperature and maintaining it constant for several synchronization signal cycles, the synchronization temperature controller stops heating. S55. After several synchronization signal cycles, the magnetic noise is measured by the electromagnetic probe to be tested. S56. Repeat steps S53-S55 until the magnetic noise measurement task of the electromagnetic probe under test is completed at all temperatures.

7. A storage medium, characterized in that, It contains a series of instructions for performing the steps of the method as described in claim 6.

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