CN-121995446-A - Wave field imaging method, wave field imaging device, electronic equipment and readable storage medium

CN121995446ACN 121995446 ACN121995446 ACN 121995446ACN-121995446-A

Abstract

The application discloses a wave field imaging method, a wave field imaging device, electronic equipment and a readable storage medium, and belongs to the technical field of geological exploration. The method comprises the steps of obtaining ground seismic data and vertical seismic profile data, correcting reference plane parameters of the ground seismic data and reference plane parameters of the vertical seismic profile data to obtain target reference plane parameters, obtaining first coordinate data of a plurality of target detection points and second coordinate data of a plurality of target seismic sources based on the target reference plane parameters, and determining target wave field imaging of a geological profile according to the first coordinate data, the second coordinate data, the ground seismic data and the vertical seismic profile data. The target wave field imaging has the characteristics of uniform imaging, large imaging range and high resolution, so that the quality of the target wave field imaging is higher.

Inventors

ZHANG ENJIA
CHEN DAN
DUAN PENGFEI
JIN DEGANG
CAO ZHONGLIN
ZHANG HENG

Assignees

中国石油天然气集团有限公司
中国石油集团东方地球物理勘探有限责任公司
中油油气勘探软件国家工程研究中心有限公司

Dates

Publication Date: 20260508
Application Date: 20241105

Claims (10)

1. A method of wavefield imaging, the method comprising: Acquiring ground seismic data, wherein the ground seismic data is data of a plurality of first seismic sources received by a plurality of first detection points placed along the ground, and vertical seismic profile data, wherein the vertical seismic profile data is data of a plurality of second seismic sources received by a plurality of second detection points placed along a well; correcting the reference plane parameters of the ground seismic data and the reference plane parameters of the vertical seismic section data to obtain target reference plane parameters; Acquiring first coordinate data of a plurality of target detection points and second coordinate data of a plurality of target seismic sources based on the target reference plane parameters, wherein the plurality of target detection points comprise the plurality of first detection points and the plurality of second detection points, and the plurality of target seismic sources comprise the plurality of first seismic sources and the plurality of second seismic sources; Determining a target wavefield image of a geologic profile from the first plurality of coordinate data, the second plurality of coordinate data, the surface seismic data, and the vertical seismic profile data.
2. The method of claim 1, wherein said determining a target wavefield image of a geologic profile from the plurality of first coordinate data, the plurality of second coordinate data, the ground seismic data, and the vertical seismic profile data comprises: Determining, from the plurality of first coordinate data, the plurality of second coordinate data, the ground seismic data, and the vertical seismic profile data, a plurality of travel time field data describing a time field of a ray from a scattering point on the geological profile to the target receiver point or the target source, and a plurality of amplitude data describing an amplitude of the ray; A target wavefield image of the geologic profile is determined from the plurality of travel-time field data and the plurality of amplitude data.
3. The method of claim 2, wherein the determining a plurality of travel-time field data and a plurality of amplitude data from the plurality of first coordinate data, the plurality of second coordinate data, the ground seismic data, and the vertical seismic profile data comprises: Determining a gather of each target seismic source and a gather of each target detector according to the ground seismic data and the vertical seismic profile data, wherein the gather of each target seismic source comprises data of each target detector for receiving the target seismic source, and the gather of each target detector comprises data of each target seismic source received by the target detector; Determining third coordinate data of a plurality of scattering points on the geological section according to the section data of the geological section and the section grid; And determining a plurality of travel time field data and a plurality of amplitude data according to the plurality of first coordinate data, the plurality of second coordinate data, the plurality of third coordinate data, the trace set of each target seismic source and the trace set of each target detection point.
4. The method of claim 2, wherein the determining the target wavefield image of the geologic profile from the plurality of travel-time field data and the plurality of amplitude data comprises: Determining wavefield data for each scattering point from the plurality of travel-time field data and the plurality of amplitude data; A target wavefield image of the geological profile is determined based on the wavefield data of the respective scattering points.
5. The method of claim 4, wherein the travel-time field data comprises first data and second data, the amplitude data comprises third data and fourth data, the first data is used to describe a time field of a first ray from the scattering point to the target receiver point, the second data is used to describe a time field of a second ray from the scattering point to the target source, the third data is used to describe an amplitude of the first ray, and the fourth data is used to describe an amplitude of the second ray; said determining wave field data for each scattering point from said plurality of travel-time field data and said plurality of amplitude data, comprising: For any scattering point, determining a sum value between first data and second data corresponding to the any scattering point, and determining a ratio between third data and fourth data corresponding to the any scattering point; and determining wave field data of any scattering point according to the ratio and the sum.
6. The method of claim 4, wherein said determining a target wavefield image of the geologic profile based on the wavefield data for the respective scattering points comprises: For any scattering point, performing amplitude equalization on wave field data of any scattering point according to at least one of the number of target detection points and the coverage times to obtain equalized data of any scattering point; and determining a target wave field image of the geological section based on the balance data of the scattering points.
7. The method of any one of claims 1 to 6, wherein said determining a target wavefield image of a geologic profile from the plurality of first coordinate data, the plurality of second coordinate data, the surface seismic data, and the vertical seismic profile data comprises: Preprocessing the ground seismic data and the vertical seismic profile data to obtain preprocessed data, wherein the preprocessing comprises at least one of denoising processing, wave field separation processing and amplitude equalization processing; And determining a target wave field imaging of the geological section according to the first coordinate data, the second coordinate data and the preprocessed data.
8. A wave field imaging apparatus, the apparatus comprising: the system comprises an acquisition module, a detection module and a detection module, wherein the acquisition module is used for acquiring ground seismic data and vertical seismic profile data, the ground seismic data are data of a plurality of first seismic sources received by a plurality of first detection points placed along the ground, and the vertical seismic profile data are data of a plurality of second seismic sources received by a plurality of second detection points placed along a well; the correction module is used for correcting the reference plane parameters of the ground seismic data and the reference plane parameters of the vertical seismic section data to obtain target reference plane parameters; The acquisition module is further configured to acquire first coordinate data of a plurality of target detection points and second coordinate data of a plurality of target seismic sources based on the target reference plane parameters, where the plurality of target detection points include the plurality of first detection points and the plurality of second detection points, and the plurality of target seismic sources include the plurality of first seismic sources and the plurality of second seismic sources; And the determining module is used for determining a target wave field image of a geological section according to the first coordinate data, the second coordinate data, the ground seismic data and the vertical seismic section data.
9. An electronic device comprising a processor and a memory, wherein the memory stores at least one computer program, the at least one computer program being loaded and executed by the processor to cause the electronic device to implement the wave field imaging method of any one of claims 1 to 7.
10. A computer readable storage medium, characterized in that at least one computer program is stored in the computer readable storage medium, which is loaded and executed by a processor to cause an electronic device to implement the wave field imaging method according to any of claims 1 to 7.

Description

Wave field imaging method, wave field imaging device, electronic equipment and readable storage medium Technical Field The embodiment of the application relates to the technical field of geological exploration, in particular to a wave field imaging method, a wave field imaging device, electronic equipment and a readable storage medium. Background In the technical field of geological exploration, surface seismic imaging and VSP (VERTICAL SEISMIC Profiling) imaging are two common wave field imaging techniques, which differ mainly in the way they are explored. Wherein, due to the difference of exploration modes, the ground seismic data and the VSP data have respective defects, so that the quality of ground seismic imaging and VSP imaging is poor. Based on this, how to improve the quality of wave field imaging is a technical problem to be solved. Disclosure of Invention The application provides a wave field imaging method, a wave field imaging device, electronic equipment and a readable storage medium, which can be used for solving the problems in the related art. In one aspect, a method of wavefield imaging is provided, the method comprising: Acquiring ground seismic data, wherein the ground seismic data is data of a plurality of first seismic sources received by a plurality of first detection points placed along the ground, and vertical seismic profile data, wherein the vertical seismic profile data is data of a plurality of second seismic sources received by a plurality of second detection points placed along a well; correcting the reference plane parameters of the ground seismic data and the reference plane parameters of the vertical seismic section data to obtain target reference plane parameters; Acquiring first coordinate data of a plurality of target detection points and second coordinate data of a plurality of target seismic sources based on the target reference plane parameters, wherein the plurality of target detection points comprise the plurality of first detection points and the plurality of second detection points, and the plurality of target seismic sources comprise the plurality of first seismic sources and the plurality of second seismic sources; Determining a target wavefield image of a geologic profile from the first plurality of coordinate data, the second plurality of coordinate data, the surface seismic data, and the vertical seismic profile data. In another aspect, there is provided a wave field imaging apparatus, the apparatus comprising: the system comprises an acquisition module, a detection module and a detection module, wherein the acquisition module is used for acquiring ground seismic data and vertical seismic profile data, the ground seismic data are data of a plurality of first seismic sources received by a plurality of first detection points placed along the ground, and the vertical seismic profile data are data of a plurality of second seismic sources received by a plurality of second detection points placed along a well; the correction module is used for correcting the reference plane parameters of the ground seismic data and the reference plane parameters of the vertical seismic section data to obtain target reference plane parameters; The acquisition module is further configured to acquire first coordinate data of a plurality of target detection points and second coordinate data of a plurality of target seismic sources based on the target reference plane parameters, where the plurality of target detection points include the plurality of first detection points and the plurality of second detection points, and the plurality of target seismic sources include the plurality of first seismic sources and the plurality of second seismic sources; And the determining module is used for determining a target wave field image of a geological section according to the first coordinate data, the second coordinate data, the ground seismic data and the vertical seismic section data. In another aspect, an electronic device is provided, the electronic device comprising a processor and a memory, the memory storing at least one computer program, the at least one computer program loaded and executed by the processor to cause the electronic device to implement any one of the wavefield imaging methods described above. In another aspect, there is provided a computer readable storage medium having stored therein at least one computer program loaded and executed by a processor to cause an electronic device to implement any of the wavefield imaging methods described above. In another aspect, there is provided a computer program, the computer program being at least one, the at least one computer program being loaded and executed by a processor to cause an electronic device to implement any of the wave field imaging methods described above. In another aspect, there is also provided a computer program product having at least one computer program stored therein, the at least one computer program being load