OBC and towing cable data consistency processing method and system

Through amplitude consistency processing, phase frequency consistency processing and compression-perceived data reconstruction, the problem of OBC and streamer data consistency processing is solved, and the impact of non-geological factors on seismic data is eliminated, providing a reliable data basis for time-shift seismic research in oilfields.

CN119667768AActive Publication Date: 2025-03-21ZHANJIANG BRANCH OF CHINA NATIONAL OFFSHORE OIL CORP
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Patent Information

Application Number
CN202411812519.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-21
Estimated Expiration
2044-12-10

AI Technical Summary

Technical Problem

The existing technology is difficult to achieve consistent processing of OBC and streamer data, which leads to the inability to eliminate the impact of environmental and human factors on seismic data, and cannot provide a reliable data basis for subsequent time-shift seismic research in oil fields.

Method used

Through amplitude consistency processing, phase frequency consistency processing and compression-perceptual data reconstruction, the consistency processing between OBC and streamer data is achieved, and the impact of non-geological factors on seismic data is eliminated.

Benefits of technology

The consistent processing of OBC and streamer data was achieved, eliminating the impact of environmental and human factors on seismic data, and providing a reliable data basis for subsequent time-shift seismic research in oil fields.

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Abstract

The invention relates to the technical field of geophysics and oil-gas exploration and development, and provides an OBC and towing cable data consistency processing method and system, and the method comprises the steps: carrying out the amplitude consistency processing of collected OBC data and towing cable data; phase frequency consistency processing is carried out on the OBC data and the towing cable data which are consistent in amplitude; performing compressed sensing data reconstruction on the OBC data and the towing cable data after consistency processing to obtain reconstructed data; and obtaining the CMP gather by using the obtained reconstruction data. According to the scheme of the invention, the method can obtain the seismic attribute difference really caused by the oil-gas-water change of the oil-gas reservoir part, carries out the normalization correction of the time-lapse seismic data of the non-oil-gas reservoir part, and enables the sections of the non-oil-gas reservoir part to be consistent as much as possible.
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