济阳坳陷深层地震资料处理技术及应用

Processing technology for seismic data from deep layers of Jiyang depression and its application

中国石化胜利油田有限公司物探公司, 山东东营257100

Geophysical Prospecting Company of Shengli Oilfield Ltd., SINOPEC, Dongying 257100,China

针对深层地震信号能量弱、频率低、可描述性差及信噪比低的特点,对深层地震资料的处理方法开展了研究,提出了采用地表一致性振幅处理技术、多域去噪技术、剩余时差校正技术、主能量优化叠加技术等进行精细处理,并且,将地质模型作为一种约束条件引入深层资料处理的整个环节,提高了叠加成象的精度。通过对BH、DY等地区老资料及LFJ地区深层采集资料的精细处理,总结出了一套提高深层资料信噪比,改善资料叠加成像效果的深层资料精细处理流程。

Seismic data from deep layers features weak in energy and low in frequency and signal to noise ratio. This paper suggests that fine processing results can reached through a series of processing such as surface consistent amplitude processing, denoising in multiple domains, residual moveout correction, and dominant energy optimization stack. In addition, geological models should be used as constraints during the data processing to improve the precision of stacking imaging. A refined processing sequence that can improve the effect of stacking image for data from deep layers was summarized out. Desired results are obtained by applying the sequence to the legacy data from areas of BH and DY, and data acquired from deep layers in LFJ area.