海洋长排列单源单缆准三维窄方位地震资料处理技术  

The processing technology of narrow azimuth Quasi three-dimensional seismic data acquisition by single source and single long streamer system in marine seismic exploration

作　　者：邓桂林 丁龙翔[1,2] 李福元 张宝金 DENG Gui-Lin;DING Long-Xiang;LI Fu-Yuan;ZHANG Bao-Jin(MNR Key Laboratory of Marine Mineral Resources,Guangzhou 510075,China;Guangzhou Marine Geological Survey,Guangzhou 510075,China)

机构地区：[1]自然资源部海底矿产资源重点实验室,广东广州510075 [2]广州海洋地质调查局,广东广州510075

出　　处：《物探与化探》2019年第4期828-834,共7页Geophysical and Geochemical Exploration

基　　金：中国地质调查局项目(DD20189823);国家重点研发计划子课题“天然气水合物高精度三维地震数据处理和成像技术研究”(2017YFC0307405)

摘　　要：南海北部陆坡潮汕凹陷中生界构造复杂,二维地震资料处理解释结果不能满足地质目标要求,而该海域环境复杂不适合常规的多缆三维地震资料的采集。因此,本文根据长排列单源单缆地震资料采集特点,采用二维和三维地震资料处理相结合的方法,完成准三维地震资料的处理。在处理中,针对性地应用了气枪震源气泡效应压制、组合方法多次波压制、高质量多维插值、三维叠前时间偏移成像等关键技术,首次在该区域获得了三维叠前时间偏移成果,解决了以前二维地震资料处理不能解决的问题,在地质上能够准确揭示逆冲构造内幕。The structure of Mesozoic in Chaoshan sag in the north of the South China Sea is quite complex,so two-dimensional seismic data imaging can not accurately reveal the inside of the structure,and the environment in this area is complex and not suitable for conventional multi-cable three-dimensional seismic data acquisition system.Based on the characteristics of quasi three dimensional seismic data acquisition by single source and single long streamer system,the authors used air-gun de-bubble technology in combination with multiple suppression method,Compact Fourier Interpolation technology and three-dimensional prestack time migration technology in the seismic data processing project.It is for the first time that three-dimensional prestack time migration data were obtained in this area,and the quality of the imaging profile is greatly improved relative to that of the two-dimensional data.It can accurately reveal the inner curtain of the thrust structure and solve the problem that can not be solved by the former two-dimensional seismic exploration.

关 键 词：长排列 单源单缆 准三维 三维叠前时间偏移 海洋地质调查 地震资料 

分 类 号：P631.4[天文地球—地质矿产勘探]