CN-119620184-B - Interference noise processing method and device, electronic equipment and storage medium

CN119620184BCN 119620184 BCN119620184 BCN 119620184BCN-119620184-B

Abstract

The embodiment of the invention provides an interference noise processing method, an interference noise processing device, electronic equipment and a storage medium, wherein the method comprises the steps of carrying out data domain conversion processing on initial seismic data in a first data domain to obtain intermediate seismic data in a second data domain, determining first interference noise data in the second data domain according to a preset interference filtering scanning mode based on the intermediate seismic data, carrying out data domain inversion processing on the first interference noise data to obtain second interference noise data in the first data domain, and carrying out interference noise processing on the initial seismic data based on the second interference noise data to obtain the processed effective seismic data. The method realizes the effective suppression of the external interference noise, has better amplitude-preserving fidelity, can protect low-frequency effective signals, improves the signal-to-noise ratio of the seismic data, has self-adaptability, can efficiently process the seismic data with huge data volume compared with the traditional external interference suppression algorithm, and effectively improves the suppression effect.

Inventors

Miao Junqian
SHAO WENCHAO
LI HAIQIANG

Assignees

中国石油化工股份有限公司
中石化石油物探技术研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20230912

Claims (9)

1. A method for processing interference noise in seismic data, comprising: performing data domain conversion processing on the initial seismic data in the first data domain to obtain intermediate seismic data in the second data domain, wherein the initial seismic data is acquired by marine seismic data; based on the intermediate seismic data, determining first interference noise data in the second data domain according to a preset interference filtering scanning mode; performing data domain inversion processing on the first interference noise data to obtain second interference noise data in the first data domain; Performing interference noise processing on the initial seismic data based on the second interference noise data to obtain processed effective seismic data; The interference filtering scanning mode comprises a random splitting mode and a median filtering mode, the first interference noise data in the second data domain is determined according to the preset interference filtering scanning mode based on the middle seismic data, the range and the increment of a common shot gather are determined based on the middle seismic data, the common shot gather is split into a plurality of cross subsets according to the random splitting mode, filters corresponding to the cross subsets are determined according to the median filtering mode, noise suppression is conducted on the middle seismic data according to the filters corresponding to the cross subsets, noise suppressed seismic data are obtained, and the first interference noise data are obtained according to the middle seismic data and the noise suppressed seismic data.
2. The method of claim 1, wherein the first data field comprises a time field or a frequency field, and wherein the second data field comprises a Tao Pu map field.
3. The method for processing interference noise according to claim 2, wherein the performing data domain conversion processing on the initial seismic data in the first data domain to obtain intermediate seismic data in the second data domain includes: Determining seismic wave observation coordinates according to the initial seismic data; and generating the intermediate seismic data according to the slope and intercept of corresponding tangent lines of all points in the seismic wave observation coordinates.
4. A method of processing interference noise according to claim 3, wherein said generating said intermediate seismic data from the slope and intercept of corresponding tangents to all points in said seismic observation coordinates comprises: Determining a linear motion correction time difference threshold according to the slope and intercept of the corresponding tangent lines of all points; And generating the intermediate seismic data according to the slope and the intercept of the tangent corresponding to all points in the seismic wave observation coordinates only when the linear dynamic correction time difference range corresponding to the seismic wave observation coordinates is smaller than or equal to the linear dynamic correction time difference threshold.
5. The method of processing interference noise according to claim 2, wherein said performing data domain inversion processing on the first interference noise data to obtain second interference noise data in the first data domain includes: determining the position coordinates of the noise data in the first data domain according to the slope and intercept of the noise data in the first interference noise data; and generating the second interference noise data according to the position coordinates of the noise data.
6. The method of claim 5, further comprising, prior to said determining the location coordinates of noise data within said first data domain based on the slope and intercept of noise data in said first interference noise data: Acquiring a channel number threshold value of a common gun channel set and an actual channel number value of the first interference noise data; and determining the position coordinates of the noise data in the first data domain according to the slope and the intercept of the noise data in the first interference noise data only when the actual channel value is greater than or equal to the channel number threshold value.
7. An apparatus for processing interference noise in seismic data, comprising: The first module is used for carrying out data domain conversion processing on the initial seismic data in the first data domain to obtain intermediate seismic data in the second data domain, wherein the initial seismic data is acquired by marine seismic data; The second module is used for determining first interference noise data in the second data domain according to a preset interference filtering scanning mode based on the middle seismic data; a third module, configured to perform data domain inversion processing on the first interference noise data to obtain second interference noise data in the first data domain; A fourth module, configured to perform interference noise processing on the initial seismic data based on the second interference noise data, to obtain processed effective seismic data; The interference filtering scanning mode comprises a random splitting mode and a median filtering mode, the second module is further used for determining the range and increment of a common shot gather based on the middle seismic data, splitting the common shot gather into a plurality of cross subsets according to the random splitting mode, determining filters corresponding to the cross subsets according to the median filtering mode, performing noise suppression on the middle seismic data according to the filters corresponding to the cross subsets to obtain noise suppressed seismic data, and obtaining the first interference noise data according to the middle seismic data and the noise suppressed seismic data.
8. An electronic device comprising a memory and a processor, wherein the memory has stored thereon a computer program which, when executed by the processor, implements the method of any of claims 1 to 6.
9. A computer readable storage medium, having stored thereon a computer program which, when executed by one or more processors, implements the method of any of claims 1 to 6.

Description

Interference noise processing method and device, electronic equipment and storage medium Technical Field The invention relates to the technical field of geophysical exploration seismic data processing, in particular to an interference noise processing method, an interference noise processing device, electronic equipment and a storage medium. Background In marine seismic data acquisition, there are often a variety of noise, such as surge interference, direct wave, oblique interference, multiple, and exogenous interference. With the increase of offshore facilities and the development of fishery, the interference signal sources for offshore data acquisition are increasing. Therefore, special exogenous interference suppression work is required for the seismic section with strong exogenous interference energy of the offshore data. In the marine seismic data acquisition process, when an external source passes, noise caused in the motion process of the marine seismic data acquisition process can be expressed in different modes in the seismic data recording process, but the characteristics of the marine seismic data acquisition process are generally similar to those of normal reflection signals, the frequency range is overlapped with effective signals from the frequency spectrum, and the marine seismic time interval curve rule is met, so that the external source interference cannot be identified and suppressed by a common noise suppression method. Therefore, the current seismic data processing technology has the technical problems of poor suppression effect on external interference noise and low efficiency. Disclosure of Invention In order to solve the technical problems of poor suppression effect and low efficiency of external interference noise in the current seismic data processing technology, the embodiment of the invention provides an interference noise processing method, an interference noise processing device, electronic equipment and a storage medium. In a first aspect, an embodiment of the present invention provides a method for processing interference noise in seismic data, where the method includes: Performing data domain conversion processing on the initial seismic data in the first data domain to obtain intermediate seismic data in the second data domain; based on the intermediate seismic data, determining first interference noise data in the second data domain according to a preset interference filtering scanning mode; performing data domain inversion processing on the first interference noise data to obtain second interference noise data in the first data domain; and performing interference noise processing on the initial seismic data based on the second interference noise data to obtain processed effective seismic data. In some embodiments, the first data field comprises a time field or a frequency field and the second data field comprises a Tao Pu map field. In some embodiments, the performing data domain conversion processing on the initial seismic data in the first data domain to obtain intermediate seismic data in the second data domain includes: Determining seismic wave observation coordinates according to the initial seismic data; and generating the intermediate seismic data according to the slope and intercept of corresponding tangent lines of all points in the seismic wave observation coordinates. In some embodiments, the generating the intermediate seismic data from the slope and intercept of corresponding tangents to all points in the seismic observation coordinates includes: Determining a linear motion correction time difference threshold according to the slope and intercept of the corresponding tangent lines of all points; And generating the intermediate seismic data according to the slope and the intercept of the tangent corresponding to all points in the seismic wave observation coordinates only when the linear dynamic correction time difference range corresponding to the seismic wave observation coordinates is smaller than or equal to the linear dynamic correction time difference threshold. In some embodiments, the performing data domain inversion processing on the first interference noise data to obtain second interference noise data in the first data domain includes: determining the position coordinates of the noise data in the first data domain according to the slope and intercept of the noise data in the first interference noise data; and generating the second interference noise data according to the position coordinates of the noise data. In some embodiments, before determining the position coordinates of the noise data in the first data domain according to the slope and intercept of the noise data in the first interference noise data, the method further comprises: Acquiring a channel number threshold value of a common gun channel set and an actual channel number value of the first interference noise data; and determining the position coordinates of the noise data in the first da