Model trace improvement in residual static corrections
Wu Bo1, Pan Shulin2, Wang Jian1
1. Research Institute of Exploration and Development, Southwest Oil and Gas Branch Co., SINOPEC, Chengdu, Sichuan 610041, China; 2. School of Resources and Environment Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
Abstract：In the conventional maximum stack-power method for residual static corrections,the model trace usually is inaccurate.To solve this problem we propose in this paper a model trace improvement method.In the preprocessing stage,traces with serious wavelet distortion are eliminated to avoid influences on the model trace.On the other hand,the adaptive decentralized superposition algorithm is adopted to weaken influences of wavelet less-similarity traces on the model trace,and further strengthen the influence of efficient signals on model stack.Applications to seismic data prove that the proposed method can effectively improve residual static corrections of low signal-to-noise ratio data in complicated mountainous areas.
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