An Objective Function Optimization Method Based on Multi-frequency Wavelets for Receiver Combination in Seismic Acquisition

doi:10.11885/j.issn.1674-5086.2020.12.14.02

Abstract

Abstract: The traditional objective function used to design geophone array parameters often takes single-frequency simple harmonic as the research object, and investigates the local information such as zero point position and suppression band, which does not conform to the actual frequency composition and spatial continuity distribution characteristics of seismic wavelet. Based on the combined energy response of broadband wavelets, using the property that the main bodies of interference waves and seismic reflection signals are continuously distributed in different regions of space, four objective functions with statistical significance are established, each of which has its own emphasis on noise suppression and effective signal protection. Through theoretical analysis, numerical simulation and actual data trial calculation, the differences of different objective functions in noise suppression, reflected signal damage, signal spectrum change and AVO distortion are compared. The analysis shows that the objective function protecting the effective signal, as it has more advantages first can reduce the combined low-pass filtering effect, and has less impact on AVO distortion.

Key words: objective function, geophone array parameters, signal-to-noise ratio, low-pass filtering, AVO distortion

CLC Number:

TE132

PENG Gengxin, XU Feng, XU Kaichi, LIU Fulie, LI Yongjun. An Objective Function Optimization Method Based on Multi-frequency Wavelets for Receiver Combination in Seismic Acquisition[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2023, 45(2): 32-42.

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