Optical fiber temperature logging depth correction method, device, equipment, medium and product
By analyzing the morphology and temperature gradient of distributed fiber optic temperature logging curves, the fluid production location was identified, and depth correction was performed in conjunction with the wellhead distance, thus solving the problem of inaccurate logging depth and achieving more accurate logging depth interpretation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2024-11-12
- Publication Date
- 2026-05-12
AI Technical Summary
In existing technologies, the logging depth in distributed fiber optic temperature logging curves is inaccurate and depth correction is required.
By analyzing the shape of the distributed fiber optic temperature logging curve, the fiber length range corresponding to the fluid extraction location is determined, the temperature gradient curve is calculated, the fluid extraction location is identified using the temperature gradient threshold, and the logging depth is corrected by combining the distance between the wellhead acquisition device and the ground.
It provides accurate logging depth correction, eliminates invalid data above the wellhead, and improves the accuracy of logging depth interpretation.
Smart Images
Figure CN122014230A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of oil and gas exploration and development technology, specifically to a fiber optic temperature logging depth correction method, device, equipment, medium, and product. Background Technology
[0002] Distributed fiber optic temperature monitoring collects both Anti-Stokes and Stokes light, and demodulates the temperature signal using the ratio of their intensities. Distributed fiber optics offer advantages such as high measurement accuracy, resistance to electromagnetic interference, non-contact measurement, easy installation, and suitability for long-term or permanent downhole monitoring. It is widely used in oil and gas well production for applications such as horizontal well fracturing and production profile interpretation.
[0003] In distributed fiber optic temperature logging, the optical fiber is lowered into the well along with the steel cable. The temperature signal of the entire fiber optic segment is continuously measured and recorded to obtain the distributed fiber optic temperature logging curve. In this curve, the fiber length is used to represent the logging depth. However, using fiber length to represent logging depth is inaccurate; therefore, the fiber length needs to be depth-corrected to convert it into an interpretable logging depth.
[0004] It should be noted that the information disclosed in the background section of this application is intended only to enhance the understanding of the general background of this application, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention
[0005] In view of this, this application provides a fiber optic temperature logging depth correction method, apparatus, equipment, medium, and product to help solve the problem of inaccurate logging depth in distributed fiber optic temperature logging curves in the prior art.
[0006] In a first aspect, embodiments of this application provide a distributed optical fiber temperature logging depth correction method, including:
[0007] The shape of the distributed fiber optic temperature logging curve is analyzed to determine the fiber optic length range corresponding to the fluid extraction location.
[0008] Based on the distributed fiber optic temperature logging curve, calculate the temperature gradient curve within the fiber length range corresponding to the fluid extraction location;
[0009] The temperature gradient curve is analyzed to determine the fluid extraction location;
[0010] The logging depth of the distributed fiber optic temperature logging curve is corrected based on the fluid production location to obtain the corrected logging depth.
[0011] In one possible implementation, the analysis of the morphology of the distributed fiber optic temperature logging curve to determine the fiber optic length range corresponding to the fluid extraction location includes:
[0012] Based on the morphological changes of the distributed optical fiber temperature logging curve and the reference surface temperature value, the range of optical fiber length corresponding to the fluid extraction location is determined.
[0013] In one possible implementation, calculating the temperature gradient curve within the fiber length range corresponding to the fluid production location based on the distributed fiber optic temperature logging curve includes:
[0014] According to the formula: T grad,i =(T i-1 -T i+1 ) / (2*Δd), calculate the temperature gradient curve within the fiber length range corresponding to the fluid extraction location;
[0015] Among them, T grad,i Let T be the temperature gradient value at the i-th depth point. i-1 and T i+1 Δd represents the temperature values corresponding to the (i-1)th and (i+1)th depth points in the distributed optical fiber temperature logging curve, respectively, and Δd is the sampling interval of the distributed optical fiber temperature logging curve.
[0016] In one possible implementation, analyzing the temperature gradient curve to determine the fluid extraction location includes:
[0017] The depth points in the temperature gradient curve that are greater than the preset temperature gradient threshold are taken as the fluid extraction locations.
[0018] In one possible implementation, the step of using the depth point in the temperature gradient curve that is greater than a preset temperature gradient threshold as the fluid extraction location includes:
[0019] The fluid extraction location is determined by searching from bottom to top in the temperature gradient curve and identifying the depth point in the temperature gradient curve that is greater than a preset temperature gradient threshold.
[0020] In one possible implementation, the step of correcting the logging depth of the distributed fiber optic temperature logging curve based on the fluid production location to obtain the corrected logging depth includes:
[0021] Based on the fluid extraction location and the distance between the wellhead acquisition device and the ground, the distributed fiber optic temperature logging curve is corrected for logging depth to obtain the corrected logging depth.
[0022] In one possible implementation, the step of correcting the logging depth of the distributed fiber optic temperature logging curve based on the fluid production location and the distance between the wellhead acquisition device and the ground to obtain the corrected logging depth includes:
[0023] According to the formula: d c =l-(l0+h), perform logging depth correction on the distributed optical fiber temperature logging curve to obtain the corrected logging depth;
[0024] Where, d c The corrected logging depth is given by l, the fiber optic length is given by l0, the fluid extraction location is given by l0, and the distance between the wellhead acquisition device and the ground is given by h.
[0025] Secondly, embodiments of this application provide a distributed optical fiber temperature logging depth correction device, comprising:
[0026] The fiber optic length range determination module is used to analyze the shape of the distributed fiber optic temperature logging curve and determine the fiber optic length range corresponding to the fluid extraction location.
[0027] The temperature gradient curve calculation module is used to calculate the temperature gradient curve within the fiber length range corresponding to the fluid extraction location based on the distributed fiber temperature logging curve.
[0028] The fluid extraction location determination module is used to analyze the temperature gradient curve and determine the fluid extraction location.
[0029] The logging depth correction module is used to correct the logging depth of the distributed fiber optic temperature logging curve according to the fluid production location, so as to obtain the corrected logging depth.
[0030] Thirdly, embodiments of this application provide an electronic device, including:
[0031] processor;
[0032] Memory;
[0033] And a computer program, wherein the computer program is stored in the memory, and when the computer program is executed by the processor, implements the method described in any one of the first aspects.
[0034] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in any one of the first aspects.
[0035] Fifthly, embodiments of this application provide a computer program product, the computer program product including a computer program, which, when executed by a processor, implements the method described in any one of the first aspects.
[0036] In this embodiment, by analyzing the shape of the distributed fiber optic temperature logging curve, the approximate fiber length range corresponding to the fluid extraction location is determined. Based on the distributed fiber optic temperature logging curve, the temperature gradient curve within the fiber length range corresponding to the fluid extraction location is calculated. The temperature gradient curve is analyzed to determine the fluid extraction location. Based on the fluid extraction location, the logging depth of the distributed fiber optic temperature logging curve is corrected to obtain the corrected logging depth, thereby providing an accurate logging depth for the distributed fiber optic temperature logging curve. Attached Figure Description
[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0038] Figure 1 A schematic flowchart of a distributed optical fiber temperature logging depth correction method provided in this application embodiment;
[0039] Figure 2 This is a schematic diagram illustrating the optical fiber length range corresponding to a fluid extraction location, provided in an embodiment of this application.
[0040] Figure 3 A schematic diagram of a distributed optical fiber temperature logging curve and temperature gradient curve provided for an embodiment of this application;
[0041] Figure 4 A schematic diagram of a fluid extraction location provided in an embodiment of this application;
[0042] Figure 5 A waterfall plot drawn from distributed fiber optic temperature logging curves continuously measured at different times, provided as an embodiment of this application;
[0043] Figure 6 A structural block diagram of a distributed optical fiber temperature logging depth correction device is also provided for embodiments of this application;
[0044] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation
[0045] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0046] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.
[0047] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.
[0048] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0049] See Figure 1 This is a flowchart illustrating a distributed optical fiber temperature logging depth correction method provided in an embodiment of this application. Figure 1 As shown, it mainly includes the following steps.
[0050] Step S101: Analyze the shape of the distributed fiber optic temperature logging curve to determine the fiber optic length range corresponding to the fluid extraction location.
[0051] Specifically, during the production process, high-temperature fluid flows along the wellbore from the bottom to the wellhead and is then produced. Below the production location, due to the presence of high-temperature fluid, the temperature is reflected as high temperature on the distributed fiber optic temperature logging curve. Above the production location, the medium is air and is reflected as normal temperature on the distributed fiber optic temperature logging curve. The temperature at the wellhead changes rapidly. Therefore, the production location can be used as a depth reference point.
[0052] See Figure 2 This is a schematic diagram illustrating the optical fiber length range corresponding to a fluid extraction location, provided in an embodiment of this application. Figure 2 As shown, by analyzing the morphological changes of the distributed fiber optic temperature logging curve and referencing the surface temperature value (temperature at the surface), the fiber optic length corresponding to the fluid extraction location can be determined to be approximately 980-1040 meters.
[0053] Step S102: Calculate the temperature gradient curve within the fiber length range corresponding to the fluid extraction location based on the distributed fiber temperature logging curve.
[0054] To more accurately understand the temperature variation of the fluid in the wellbore with depth, distributed fiber optic temperature logging is used to calculate the temperature gradient curve of the fluid along the fiber length. It should be noted that, to reduce data processing load, only the temperature gradient curve within the fiber length corresponding to the fluid extraction location can be calculated.
[0055] Specifically, the formula for calculating the temperature gradient curve is:
[0056] T grad,i =(T i-1 -T i+1 ) / (2*Δd)
[0057] Among them, T grad,i Let T be the temperature gradient value at the i-th depth point. i-1 and T i+1 Δd represents the temperature values corresponding to the (i-1)th and (i+1)th depth points in the distributed optical fiber temperature logging curve, respectively, and Δd is the sampling interval of the distributed optical fiber temperature logging curve.
[0058] Step S103: Analyze the temperature gradient curve to determine the fluid extraction location.
[0059] See Figure 3 This is a schematic diagram of a distributed optical fiber temperature logging curve and temperature gradient curve provided in an embodiment of this application. Figure 3 As shown, near the fluid extraction location, the temperature changes rapidly, and the temperature gradient increases, while the temperature change and temperature gradient are smaller above and below the fluid extraction location. Therefore, based on the above characteristics of the temperature gradient curve, the depth point in the temperature gradient curve that is greater than a preset temperature gradient threshold can be used as the fluid extraction location.
[0060] In practice, the temperature gradient curve can be searched from bottom to top, and the depth point in the temperature gradient curve that is greater than the preset temperature gradient threshold can be taken as the fluid extraction location, and the fiber length at this location can be recorded.
[0061] See Figure 4 This is a schematic diagram of a fluid extraction location provided in an embodiment of this application. Figure 4 As shown, the fluid extraction locations were calculated under different production regimes, such as 100,000 cubic meters of gas per day, 80,000 cubic meters of gas per day, and 60,000 cubic meters of gas per day. Due to the movement of the cable during the monitoring period, the fluid extraction locations under different production regimes had certain differences.
[0062] Step S104: Correct the logging depth of the distributed fiber optic temperature logging curve according to the fluid production location to obtain the corrected logging depth.
[0063] It is understandable that the fluid extraction location is usually situated at the top of the wellhead acquisition device. However, since the wellhead acquisition device is at a certain height above the ground, the distance between the wellhead acquisition device and the ground also needs to be considered. Specifically, based on the fluid extraction location and the distance between the wellhead acquisition device and the ground (the distance between the top of the wellhead acquisition device and the ground), the distributed fiber optic temperature logging curve is corrected for depth to obtain the corrected logging depth. It is understandable that the depth of the distributed fiber optic temperature logging curve can be corrected based on the corrected logging depth, thereby obtaining the depth-corrected distributed fiber optic temperature logging curve.
[0064] In one possible implementation, the formula for calculating the corrected logging depth is:
[0065] d c = l - (l0 + h)
[0066] Where, d c The corrected logging depth is given by l, the fiber optic length is given by l0, the fluid extraction location is given by l0, and the distance between the wellhead acquisition device and the ground is given by h.
[0067] In this embodiment, by analyzing the shape of the distributed fiber optic temperature logging curve, the approximate fiber length range corresponding to the fluid extraction location is determined. Based on the distributed fiber optic temperature logging curve, the temperature gradient curve within the fiber length range corresponding to the fluid extraction location is calculated. The temperature gradient curve is analyzed to determine the fluid extraction location. Based on the fluid extraction location, the logging depth of the distributed fiber optic temperature logging curve is corrected to obtain the corrected logging depth, thereby providing an accurate logging depth for the distributed fiber optic temperature logging curve.
[0068] See Figure 5 This is a waterfall plot provided in an embodiment of the present application, drawn from distributed fiber optic temperature logging curves measured continuously at different times. Figure 5 Figure (a) in the figure is a waterfall plot drawn based on the distributed fiber optic temperature logging curves before depth calibration. Figure 5 Figure (b) in the diagram is a waterfall plot drawn based on the distributed fiber optic temperature logging curves after depth calibration. By comparison... Figure 5 As shown in Figures (a) and (b), the depth-corrected distributed fiber optic temperature logging curves eliminate invalid data above the wellhead, providing accurate logging depth for the interpretation of distributed fiber optic temperature logging curves (or waterfall plots).
[0069] Corresponding to the above embodiments, this application also provides a distributed optical fiber temperature logging depth correction device.
[0070] See Figure 6 The following is a structural block diagram of a distributed optical fiber temperature logging depth correction device, which is also provided in the embodiments of this application. Figure 6 As shown, it mainly includes the following modules.
[0071] The fiber optic length range determination module 601 is used to analyze the shape of the distributed fiber optic temperature logging curve and determine the fiber optic length range corresponding to the fluid extraction location.
[0072] The temperature gradient curve calculation module 602 is used to calculate the temperature gradient curve within the fiber length range corresponding to the fluid extraction location based on the distributed fiber temperature logging curve.
[0073] The fluid extraction location determination module 603 is used to analyze the temperature gradient curve and determine the fluid extraction location.
[0074] The logging depth correction module 604 is used to correct the logging depth of the distributed fiber optic temperature logging curve according to the fluid production location, so as to obtain the corrected logging depth.
[0075] In one possible implementation, the fiber optic length range determination module 601 is specifically used to: determine the fiber optic length range corresponding to the fluid extraction location based on the morphological changes of the distributed fiber optic temperature logging curve and the reference surface temperature value.
[0076] In one possible implementation, the temperature gradient curve calculation module 602 is specifically used to: calculate the temperature gradient curve according to the formula: T grad,i =(T i-1 -T i+1 ) / (2*Δd), calculate the temperature gradient curve within the fiber length range corresponding to the fluid extraction location; where T grad,i Let T be the temperature gradient value at the i-th depth point. i-1 and T i+1 Δd represents the temperature values corresponding to the (i-1)th and (i+1)th depth points in the distributed optical fiber temperature logging curve, respectively, and Δd is the sampling interval of the distributed optical fiber temperature logging curve.
[0077] In one possible implementation, the fluid extraction location determination module 603 is specifically used to: take the depth point in the temperature gradient curve that is greater than a preset temperature gradient threshold as the fluid extraction location.
[0078] In one possible implementation, the step of using the depth point in the temperature gradient curve that is greater than a preset temperature gradient threshold as the fluid extraction location includes: searching from bottom to top in the temperature gradient curve and using the depth point in the temperature gradient curve that is greater than the preset temperature gradient threshold as the fluid extraction location.
[0079] In one possible implementation, the logging depth correction module 604 is specifically used to: correct the logging depth of the distributed fiber optic temperature logging curve based on the fluid production location and the distance between the wellhead acquisition device and the ground, so as to obtain the corrected logging depth.
[0080] In one possible implementation, the step of correcting the logging depth of the distributed fiber optic temperature logging curve based on the fluid production location and the distance between the wellhead acquisition device and the ground to obtain the corrected logging depth includes: according to the formula: d c =l-(l0+h), and the logging depth is corrected for the distributed fiber optic temperature logging curve to obtain the corrected logging depth; where d c The corrected logging depth is given by l, the fiber optic length is given by l0, the fluid extraction location is given by l0, and the distance between the wellhead acquisition device and the ground is given by h.
[0081] In this embodiment, by analyzing the shape of the distributed fiber optic temperature logging curve, the approximate fiber length range corresponding to the fluid extraction location is determined. Based on the distributed fiber optic temperature logging curve, the temperature gradient curve within the fiber length range corresponding to the fluid extraction location is calculated. The temperature gradient curve is analyzed to determine the fluid extraction location. Based on the fluid extraction location, the logging depth of the distributed fiber optic temperature logging curve is corrected to obtain the corrected logging depth, thereby providing an accurate logging depth for the distributed fiber optic temperature logging curve.
[0082] Corresponding to the above embodiments, this application also provides an electronic device.
[0083] See Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 7 As shown, the electronic device 700 may include a processor 701, a memory 702, and a communication unit 703. These components communicate via one or more buses. Those skilled in the art will understand that the electronic device structure shown in the figures does not constitute a limitation on the embodiments of this application. It may be a bus topology or a star topology, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.
[0084] The communication unit 703 is used to establish a communication channel, thereby enabling the electronic device to communicate with other devices.
[0085] The processor 701 serves as the control center of the electronic device, connecting various parts of the device via various interfaces and lines. It executes software programs and / or modules stored in the memory 702, and calls data stored in the memory to perform various functions and / or process data. The processor can be composed of integrated circuits (ICs), such as a single packaged IC or multiple packaged ICs with the same or different functions connected together. For example, the processor 701 may consist only of a central processing unit (CPU). In this embodiment, the CPU may have a single processing core or include multiple processing cores.
[0086] Memory 702 is used to store the execution instructions of processor 701. Memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.
[0087] When the execution instructions in memory 702 are executed by processor 701, the electronic device 700 is able to perform some or all of the steps in the above method embodiments.
[0088] Corresponding to the above embodiments, this application also provides a computer-readable storage medium, wherein the computer-readable storage medium may store a computer program, and when the computer program is executed by a processor, it may implement some or all of the steps in the above method embodiments.
[0089] In specific implementations, the computer-readable storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM), etc.
[0090] Corresponding to the above embodiments, this application also provides a computer program product, which includes a computer program that, when executed by a processor, can implement some or all of the steps in the above method embodiments.
[0091] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent the existence of A alone, the simultaneous existence of A and B, or the existence of B alone. A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.
[0092] Those skilled in the art will recognize that the units and algorithm steps described in the embodiments disclosed herein can be implemented using electronic hardware, computer software, or a combination of electronic hardware and software. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.
[0093] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0094] In the several embodiments provided in this application, any function, if implemented as a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0095] The above description is merely a specific embodiment of this application. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application. The protection scope of this application should be determined by the protection scope of the claims.
Claims
1. A distributed optical fiber temperature logging depth correction method, characterized in that, include: The shape of the distributed fiber optic temperature logging curve is analyzed to determine the fiber optic length range corresponding to the fluid extraction location. Based on the distributed fiber optic temperature logging curve, calculate the temperature gradient curve within the fiber length range corresponding to the fluid extraction location; The temperature gradient curve is analyzed to determine the fluid extraction location; The logging depth of the distributed fiber optic temperature logging curve is corrected based on the fluid production location to obtain the corrected logging depth.
2. The method according to claim 1, characterized in that, The analysis of the morphology of the distributed fiber optic temperature logging curve to determine the fiber optic length range corresponding to the fluid production location includes: Based on the morphological changes of the distributed optical fiber temperature logging curve and the reference surface temperature value, the range of optical fiber length corresponding to the fluid extraction location is determined.
3. The method according to claim 1, characterized in that, The step of calculating the temperature gradient curve within the fiber length range corresponding to the fluid production location based on the distributed fiber temperature logging curve includes: According to the formula: T grad,i =(T i-1 -T i+1 ) / (2*Δd), calculate the temperature gradient curve within the fiber length range corresponding to the fluid extraction location; Among them, T grad,i Let T be the temperature gradient value at the i-th depth point. i-1 and T i+1 Δd represents the temperature values corresponding to the (i-1)th and (i+1)th depth points in the distributed optical fiber temperature logging curve, respectively, and Δd is the sampling interval of the distributed optical fiber temperature logging curve.
4. The method according to claim 1, characterized in that, The step of analyzing the temperature gradient curve to determine the fluid extraction location includes: The depth points in the temperature gradient curve that are greater than the preset temperature gradient threshold are taken as the fluid extraction locations.
5. The method according to claim 4, characterized in that, The step of using depth points in the temperature gradient curve that are greater than a preset temperature gradient threshold as fluid extraction locations includes: The fluid extraction location is determined by searching upwards from the bottom of the temperature gradient curve and identifying the depth point on the temperature gradient curve that is greater than a preset temperature gradient threshold.
6. The method according to claim 1, characterized in that, The step of correcting the logging depth of the distributed fiber optic temperature logging curve based on the fluid production location to obtain the corrected logging depth includes: Based on the fluid extraction location and the distance between the wellhead acquisition device and the ground, the distributed fiber optic temperature logging curve is corrected for logging depth to obtain the corrected logging depth.
7. The method according to claim 6, characterized in that, The step of correcting the logging depth of the distributed fiber optic temperature logging curve based on the fluid extraction location and the distance between the wellhead acquisition device and the ground to obtain the corrected logging depth includes: According to the formula: d c =l-(l0+h), perform logging depth correction on the distributed optical fiber temperature logging curve to obtain the corrected logging depth; Where, d c The corrected logging depth is given by l, the fiber optic length is given by l0, the fluid extraction location is given by l0, and the distance between the wellhead acquisition device and the ground is given by h.
8. A distributed fiber optic temperature logging depth correction device, characterized in that, include: The fiber optic length range determination module is used to analyze the shape of the distributed fiber optic temperature logging curve and determine the fiber optic length range corresponding to the fluid extraction location. The temperature gradient curve calculation module is used to calculate the temperature gradient curve within the fiber length range corresponding to the fluid extraction location based on the distributed fiber temperature logging curve. The fluid extraction location determination module is used to analyze the temperature gradient curve and determine the fluid extraction location. The logging depth correction module is used to correct the logging depth of the distributed fiber optic temperature logging curve according to the fluid production location, so as to obtain the corrected logging depth.
9. An electronic device, characterized in that, include: processor; Memory; And a computer program, wherein the computer program is stored in the memory, and when the computer program is executed by the processor, implements the method of any one of claims 1-7.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method of any one of claims 1-7.
11. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the method described in any one of claims 1-7.