Advances and performance of seismic exploration experiments in the western Yin′e Basin
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摘要: 为提高银额盆地上古生界地震探测效果, 以银额盆地西部居延海坳陷为试验区, 调研了该区以往地震采集特点及资料处理技术现状, 开展了地震野外采集试验和室内处理攻关, 探索总结了银额盆地上古生界的地震探测技术。结果表明, 该区地震激发应因地制宜采用井炮及可控震源相组合的方式; 接收方面应首先满足排列长度的前提下再考虑增加接收密度; 采取配套的各向异性处理、谱约束反褶积、楔形变换自适应去噪等针对性处理技术可有效提升深层地震成像质量。本研究为相似地区开展工作提供了经验和借鉴。Abstract: This study aims to improve the seismic exploration effects in the Upper Paleozoic strata of the Yin′e Basin.With the Juyanhai depression in the western Yin′e Basin as an experimental area, it investigated the previous seismic acquisition characteristics and current data processing techniques of the area.Through field seismic acquisition experiments and data processing research in the laboratory, it explored and summarized the seismic exploration techniques for the Upper Paleozoic strata in the Yin′e Basin.Key findings are as follows:(1)The combination of shot holes and seismic vibrators is recommended for seismic excitation in the area according to local conditions; (2)The receiving array length takes precedence over the receiving density; (3)Targeted processing techniques including anisotropy processing, spectral-constrained deconvolution, and wedge transform adaptive denoising can effectively improve the quality of deep seismic imaging.This study provides a reference for relevant research in similar areas.
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