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OBC水陆检数据合并处理技术

Oil Geophysical Prospecting(2018)

Cited 9|Views12
Abstract
估算标定因子、海水深度和海底反射系数三个参数是OBC水陆检数据合并处理技术的关键步骤.针对常规方法确定这三个参数费时和精度低的缺陷,本文采用相关特征匹配法匹配水陆检数据、相关函数特征法直接计算标定因子、波场延迟特征法直接计算海底反射系数、分段归一化相关谱法直接计算海水深度和海水双程旅行时,对水中检波器数据和陆地检波器数据进行合并处理.合并后数据不但消除了海水鸣震多次波干扰,而且保留了陆检数据的低频成分和水检数据的高频成分,有效拓宽了海底电缆数据的有效频带,提高了地震资料的信噪比和分辨率.实例处理结果说明了方法的有效性和实用性.
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