倾斜电缆地震资料处理关键技术及其效果分析  

Key technology for slant streamer seismic data processing and its application analysis

作　　者：许自强 李添才 王用军 但志伟 顾汉明[2] 刘杰明 李三福 

机构地区：[1]中海油能源发展工程技术物探技术研究所,广东湛江524057 [2]中国地质大学(武汉)地球物理与空间信息学院,湖北武汉430074

出　　处：《中国海上油气》2015年第6期10-18,共9页China Offshore Oil and Gas

基　　金："十二五"国家科技重大专项"莺琼盆地高温高压区高精度地震资料采集处理技术(编号:2011ZX05023-004-001)";中国海洋石油总公司科技发展课题"倾斜电缆地震资料处理技术研究(编号:CNOOC-KJ 125 2011ZX05023 NFCJF2013-02)"部分研究成果

摘　　要：近年来发展的倾斜电缆采集技术具有宽频带采集和成像质量兼顾浅、中、深层等优势;相对于常规等浮拖缆采集,斜缆每一道的陷波特征都在变化,必须研发相应的处理技术。结合南海荔湾深水区倾斜电缆资料处理效果,详细阐述了倾斜电缆地震资料关键处理技术,包括波场延拓缆深校正技术、逆滤波器法震源鬼波压制技术、基于超高斯时空变电缆鬼波压制技术,并总结出了海上宽频处理的技术流程,处理后的频带宽度达2.5~140.0Hz。本文研究成果有力地推动了倾斜电缆地震资料处理技术的国产化。The slant streamer acquisition technology developed in recent years has the advantages of broad- band acquisition and good imaging quality in shallow, medium and deep layers. Compared with the conven- tional streamer acquisition, the notch characteristics vary with channels for slant streamer acquisition, so new processing technology should be developed. Based on the application analysis in Liwan deep water area in the South China Sea, such key processing techniques for slant streamer seismic data processing as streamer depth correction with wave field extrapolation, source ghost suppression with inverse filter, and receiver ghost suppression with super-Gaussian time-space variable are developed. The corresponding work flow of broadband processing is summarized and the bandwidth after processing is up to 2.5-140 Hz. The proposed technology can effectively promote the localization of seismic data processing for slant streamer seismic data.

关 键 词：倾斜电缆 波场延拓 震源鬼波压制 电缆鬼波压制 宽频处理 技术流程 处理效果 

分 类 号：P631.44[天文地球—地质矿产勘探] P631.42[天文地球—地质学]