Seismic exploration method and device for storage site
By installing seismic monitoring sensors at carbon dioxide storage sites and processing the data to calculate seismic exploration-related data, the problem of seismic exploration relying on professional experience in existing technologies has been solved, achieving more efficient and accurate site selection.
Patent Information
- Application Number
- CN202511347934.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-01-13
AI Technical Summary
Existing seismic exploration methods for carbon dioxide geological storage sites rely on professional experience, are highly subjective, and result in low site selection efficiency and limited applicability.
Seismic monitoring sensors are installed in the carbon dioxide storage site to acquire seismic data and perform preprocessing. Seismic exploration-related data, such as seismic time-depth relationship, amplitude attenuation law, formation velocity and absorption attenuation parameters, are calculated. High-precision exploration is carried out using a wireless digital seismograph with MEMS technology and the Dix formula.
It improves the accuracy and reliability of seismic exploration of sealed sites, reduces subjectivity, and increases site selection efficiency and scalability.
Smart Images
Figure CN121325262A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of carbon sequestration technology, and in particular to a seismic exploration method and apparatus for carbon sequestration sites. Background Technology
[0002] Carbon dioxide sequestration refers to the process of injecting captured carbon dioxide into deep saline aquifers, depleted oil and gas reservoirs, and other geological bodies below the ground through engineering techniques, thereby achieving long-term isolation of carbon dioxide from the atmosphere through structural strata sequestration and other methods. Depending on the sequestration location, it can be divided into terrestrial sequestration and marine sequestration, and is one of the important means to reduce greenhouse gas content and mitigate the greenhouse effect.
[0003] Carbon dioxide capture, utilization, and storage (CO2 capture, utilization, and storage) is a complex and unique industrial system. CO2 emission sources and storage sites are often located in different areas, and storage projects are costly to construct and difficult to modify once completed. Therefore, seismic exploration for appropriate CO2 geological storage sites is crucial. Current seismic exploration methods rely heavily on professional experience and are highly subjective, resulting in low site selection efficiency and limited applicability. Summary of the Invention
[0004] This application aims to at least partially address one of the technical problems in the related art.
[0005] Therefore, the first objective of this application is to propose a seismic exploration method for sealed sites.
[0006] The second objective of this application is to provide an apparatus.
[0007] The third objective of this application is to propose an electronic device.
[0008] The fourth objective of this application is to provide a computer-readable storage medium.
[0009] The fifth objective of this application is to provide a computer program product.
[0010] To achieve the above objectives, the first aspect of this application proposes a seismic exploration method for a sealed-off site, comprising:
[0011] Seismic monitoring sensors are installed at monitoring points in the carbon dioxide storage site, and seismic data collected by the seismic monitoring sensors are acquired.
[0012] The seismic data is preprocessed, and the preprocessed seismic data is obtained.
[0013] Based on the earthquake data, seismic exploration-related data are calculated, including earthquake time-depth relationship, amplitude attenuation law, formation velocity, and absorption attenuation parameters.
[0014] Optionally, the installation of seismic monitoring sensors at monitoring points in the carbon dioxide storage site includes:
[0015] A monitoring well was excavated at the carbon dioxide storage site;
[0016] The monitoring points are set at preset depths in the monitoring well.
[0017] Optionally, the step of preprocessing the seismic data and obtaining the preprocessed seismic data includes:
[0018] The earthquake data is input into a filter for filtering to remove high-frequency noise;
[0019] For missing data in the earthquake data, interpolation methods are used to fill in the gaps.
[0020] The earthquake data is then normalized.
[0021] Optionally, the step of calculating seismic exploration-related data based on the seismic data includes:
[0022] For structural studies and geological analyses of different blocks and target layers, it is necessary to perform time-depth relationship fitting at different depths;
[0023] After performing seismic velocity spectrum analysis, the stacking velocity can be interpreted. If the dip angle of the strata is large, dip angle correction is also required. Then, the layer velocity and average velocity can be calculated using the Dix formula.
[0024] Optionally, the step of calculating seismic exploration-related data based on the seismic data includes:
[0025] The amplitude decay law is described using the oscillatory exponential decay function, and the formula is:
[0026]
[0027] Where A is the initial amplitude, λ is the attenuation coefficient, ω is the angular frequency, t is the time variable, and φ is the initial phase.
[0028] Optionally, the step of calculating seismic exploration-related data based on the seismic data includes:
[0029] Calculate the vertical seismic wave propagation velocity of each stratum to obtain the corresponding stratum velocity;
[0030] Calculate the ratio of the total thickness of the seismic wave as it vertically passes through all strata to the total propagation time to obtain the average velocity of the strata.
[0031] Optionally, the step of calculating seismic exploration-related data based on the seismic data includes:
[0032] The three-parameter wavelet transform and spectral fitting method are introduced into the absorption attenuation calculation. By estimating the sub-wavelength spectrum of the TP wavelet, a smoother time spectrum with better energy focusing is obtained. Then, the stable low-frequency and high-frequency absorption attenuation gradients of the seismic wave are extracted from it using least squares curve fitting.
[0033] To achieve the above objectives, a second aspect of this application provides a seismic exploration apparatus for a sealed site, comprising:
[0034] The monitoring module is used to install seismic monitoring sensors at monitoring points in the carbon dioxide storage site and to acquire seismic data collected by the seismic monitoring sensors.
[0035] The processing module is used to preprocess the seismic data and obtain the preprocessed seismic data.
[0036] The analysis module is used to calculate seismic exploration-related data based on the seismic data, wherein the seismic exploration-related data includes seismic time-depth relationship, amplitude attenuation law, formation velocity, and absorption attenuation parameters.
[0037] To achieve the above objectives, a third aspect of this application provides an electronic device, including: a processor, and a memory communicatively connected to the processor;
[0038] The memory stores computer-executed instructions;
[0039] The processor executes computer execution instructions stored in the memory to implement the method as described in any one of the first aspects.
[0040] To achieve the above objectives, a fourth aspect of this application provides a computer-readable storage medium storing computer-executable instructions that, when executed by a processor, are used to implement the method as described in any one of the first aspects.
[0041] To achieve the above objectives, a fifth aspect of this application provides a computer program product that, when executed by a processor, implements the method described in any one of the first aspects.
[0042] The seismic exploration method, apparatus, electronic equipment, and storage medium for carbon dioxide storage sites provided in this application enable the acquisition of seismic-related data of the storage sites by setting up seismic monitoring sensors at monitoring points in the carbon dioxide storage sites, thereby improving the accuracy of the storage site exploration.
[0043] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0044] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:
[0045] Figure 1 A schematic flowchart illustrating a seismic exploration method for a sealed site, provided as an embodiment of this application;
[0046] Figure 2 This is a schematic diagram of the structure of a seismic exploration device for a sealed site, provided in an embodiment of this application. Detailed Implementation
[0047] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0048] This application provides a seismic exploration method for sealed-off sites. Figure 1 This is a flowchart illustrating a seismic exploration method for a sealed site, provided as an embodiment of this application. Figure 1 As shown, the method includes the following steps:
[0049] Step 101: Install seismic monitoring sensors at monitoring points in the carbon dioxide storage site and acquire seismic data collected by the seismic monitoring sensors;
[0050] Step 102: Preprocess the seismic data and obtain the preprocessed seismic data;
[0051] Step 103: Calculate seismic exploration related data based on the seismic data, wherein the seismic exploration related data includes seismic time-depth relationship, amplitude attenuation law, formation velocity, and absorption attenuation parameters.
[0052] Optionally, the installation of seismic monitoring sensors at monitoring points in the carbon dioxide storage site includes:
[0053] A monitoring well was excavated at the carbon dioxide storage site;
[0054] The monitoring points are set at preset depths in the monitoring well.
[0055] In this embodiment, the monitoring point should be centered on the injection well, and the monitoring area for each time-lapse seismic event should be designed. The first time-lapse seismic event should be carried out before injection, and time-lapse seismic event should be carried out every 6 months after injection. The monitored area increases over time.
[0056] The appropriate sensor should be a wireless digital seismic detector based on MEMS technology. These sensors can handle weak signals, feature low power consumption, a rational overall structural layout, high accuracy and sensitivity, and wireless data communication and wireless trigger signal reception capabilities. They are suitable for seismic exploration, providing high-precision, high-sensitivity, stable, and reliable data.
[0057] Optionally, the step of preprocessing the seismic data and obtaining the preprocessed seismic data includes:
[0058] The earthquake data is input into a filter for filtering to remove high-frequency noise;
[0059] For missing data in the earthquake data, interpolation methods are used to fill in the gaps.
[0060] The earthquake data is then normalized.
[0061] Optionally, the step of calculating seismic exploration-related data based on the seismic data includes:
[0062] For structural studies and geological analyses of different blocks and target layers, it is necessary to perform time-depth relationship fitting at different depths;
[0063] After performing seismic velocity spectrum analysis, the stacking velocity can be interpreted. If the dip angle of the strata is large, dip angle correction is also required. Then, the layer velocity and average velocity can be calculated using the Dix formula.
[0064] Optionally, the step of calculating seismic exploration-related data based on the seismic data includes:
[0065] The amplitude decay law is described using the oscillatory exponential decay function, and the formula is:
[0066]
[0067] Where A is the initial amplitude, λ is the attenuation coefficient, ω is the angular frequency, t is the time variable, and φ is the initial phase.
[0068] Optionally, the step of calculating seismic exploration-related data based on the seismic data includes:
[0069] Calculate the vertical seismic wave propagation velocity of each stratum to obtain the corresponding stratum velocity;
[0070] Calculate the ratio of the total thickness of the seismic wave as it vertically passes through all strata to the total propagation time to obtain the average velocity of the strata.
[0071] Optionally, the step of calculating seismic exploration-related data based on the seismic data includes:
[0072] The three-parameter wavelet transform and spectral fitting method are introduced into the absorption attenuation calculation. By estimating the sub-wavelength spectrum of the TP wavelet, a smoother time spectrum with better energy focusing is obtained. Then, the stable low-frequency and high-frequency absorption attenuation gradients of the seismic wave are extracted from it using least squares curve fitting.
[0073] To achieve the above embodiments, this application also proposes a seismic exploration device for sealed sites. Figure 2 This is a schematic diagram of a seismic exploration device for a sealed site, provided as an embodiment of this application. Figure 2 As shown, the device includes:
[0074] The monitoring module 210 is used to install seismic monitoring sensors at monitoring points in the carbon dioxide storage site and to acquire seismic data collected by the seismic monitoring sensors.
[0075] The processing module 220 is used to preprocess the seismic data and obtain the preprocessed seismic data.
[0076] The analysis module 230 is used to calculate seismic exploration-related data based on the seismic data, wherein the seismic exploration-related data includes seismic time-depth relationship, amplitude attenuation law, formation velocity, and absorption attenuation parameters.
[0077] To implement the above embodiments, this application also proposes an electronic device, including: a processor and a memory communicatively connected to the processor; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory to implement the method provided in the foregoing embodiments.
[0078] To implement the above embodiments, this application also proposes a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the methods provided in the foregoing embodiments.
[0079] To implement the above embodiments, this application also proposes a computer program product, including a computer program that, when executed by a processor, implements the methods provided in the foregoing embodiments.
[0080] The collection, storage, use, processing, transmission, provision, and disclosure of user personal information involved in this application all comply with the provisions of relevant laws and regulations and do not violate public order and good morals.
[0081] It should be noted that personal information collected from users should be used for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. Furthermore, such collection / sharing should only be conducted after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign an agreement / authorization that includes authorization of relevant user information before the user uses the function. In addition, any necessary steps must be taken to protect and safeguard access to such personal information data and ensure that others with access to personal information data comply with their privacy policies and procedures.
[0082] This application is intended to provide an implementation scheme for users to selectively prevent the use or access to their personal information data. Specifically, this disclosure is intended to provide hardware and / or software to prevent or block access to such personal information data. Once personal information data is no longer needed, risks can be minimized by restricting data collection and deleting data. Furthermore, where applicable, such personal information is de-identified to protect user privacy.
[0083] In the foregoing descriptions of the embodiments, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0085] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.
[0086] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.
[0087] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.
[0088] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
[0089] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.
[0090] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.
Claims
1. A seismic exploration method for a sealed site, characterized in that, Includes the following steps: Seismic monitoring sensors are installed at monitoring points in the carbon dioxide storage site, and seismic data collected by the seismic monitoring sensors are acquired. The seismic data is preprocessed, and the preprocessed seismic data is obtained. Based on the earthquake data, seismic exploration-related data are calculated, including earthquake time-depth relationship, amplitude attenuation law, formation velocity, and absorption attenuation parameters.
2. The method according to claim 1, characterized in that, The installation of seismic monitoring sensors at monitoring points in the carbon dioxide storage site includes: A monitoring well was excavated at the carbon dioxide storage site; The monitoring points are set at preset depths in the monitoring well.
3. The method according to claim 2, characterized in that, The step of preprocessing the seismic data and obtaining the preprocessed seismic data includes: The earthquake data is input into a filter for filtering to remove high-frequency noise; For missing data in the earthquake data, interpolation methods are used to fill in the gaps. The earthquake data is then normalized.
4. The method according to claim 3, characterized in that, The calculation of seismic exploration-related data based on the seismic data includes: For structural studies and geological analyses of different blocks and target layers, it is necessary to perform time-depth relationship fitting at different depths; After performing seismic velocity spectrum analysis, the stacking velocity can be interpreted. If the dip angle of the strata is large, dip angle correction is also required. Then, the layer velocity and average velocity can be calculated using the Dix formula.
5. The method according to claim 4, characterized in that, The calculation of seismic exploration-related data based on the seismic data includes: The amplitude decay law is described using the oscillatory exponential decay function, and the formula is: Where A is the initial amplitude, λ is the attenuation coefficient, ω is the angular frequency, t is the time variable, and φ is the initial phase.
6. The method according to claim 5, characterized in that, The calculation of seismic exploration-related data based on the seismic data includes: Calculate the vertical seismic wave propagation velocity of each stratum to obtain the corresponding stratum velocity; Calculate the ratio of the total thickness of the seismic wave as it vertically passes through all strata to the total propagation time to obtain the average velocity of the strata.
7. The method according to claim 6, characterized in that, The calculation of seismic exploration-related data based on the seismic data includes: The three-parameter wavelet transform and spectral fitting method are introduced into the absorption attenuation calculation. By estimating the sub-wavelength spectrum of the TP wavelet, a smoother time spectrum with better energy focusing is obtained. Then, the stable low-frequency and high-frequency absorption attenuation gradients of the seismic wave are extracted from it using least squares curve fitting.
8. A seismic exploration device for a sealed site, characterized in that, include: The monitoring module is used to install seismic monitoring sensors at monitoring points in the carbon dioxide storage site and to acquire seismic data collected by the seismic monitoring sensors. The processing module is used to preprocess the seismic data and obtain the preprocessed seismic data. The analysis module is used to calculate seismic exploration-related data based on the seismic data, wherein the seismic exploration-related data includes seismic time-depth relationship, amplitude attenuation law, formation velocity, and absorption attenuation parameters.
9. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1-7.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-7.