濮城—卫城地区复杂小断块高精度三维地震成像技术
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摘要
东濮凹陷濮城—卫城地区构造复杂,勘探对象以断层夹缝、小断块等较破碎复杂断块和岩性油气藏为主,该工区地震资料数据量大、波场复杂、干扰波发育。针对濮城—卫城高精度地震资料特点和工区地质特点,在精细处理方法和高精度地震成像技术上进行了研究,形成了以高精度逐点速度分析、层析反演静校正、叠前时间偏移、叠前干扰波压制等为特色的复杂断块高精度地震资料处理技术,并取得了明显的处理效果。
The structures in Pucheng-Weicheng area of Dongpu sag are complicated and the exploration mainly focuses on the crushing complex fault blocks and lithologic hydrocarbon reservoirs,such as the fault of the narrow space between two adjacent things,and the small fault blocks.The working area features in large-volume seismic data,complex wave field,and interference wave develops.In view of the characteristics of high-precision seismic data of Pucheng-Weicheng area and geological characteristics of the working area,research has been conducted on the fine processing method and high precision seismic imaging technology.High-precision seismic data processing technologies taking high-precision point-to-point velocity analysis,tomographic inversion static correction,prestack time migration,and prestack interference wave suppression as main features are developed.And obvious progress has been made in data processing.
The structures in Pucheng-Weicheng area of Dongpu sag are complicated and the exploration mainly focuses on the crushing complex fault blocks and lithologic hydrocarbon reservoirs,such as the fault of the narrow space between two adjacent things,and the small fault blocks.The working area features in large-volume seismic data,complex wave field,and interference wave develops.In view of the characteristics of high-precision seismic data of Pucheng-Weicheng area and geological characteristics of the working area,research has been conducted on the fine processing method and high precision seismic imaging technology.High-precision seismic data processing technologies taking high-precision point-to-point velocity analysis,tomographic inversion static correction,prestack time migration,and prestack interference wave suppression as main features are developed.And obvious progress has been made in data processing.
引文
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[2]Siliqi R,Bousquie N.Anelliptic time processing based on a shifted hyperbola approach,70th Ann.Internat.Mtg:Soc.of Expl.Geophys.,2000:2245～2248.
[3]高现俊,史英龙,张志国,等.叠前时间偏移特色配套处理技术研究及其在华北探区的应用[J].中国石油勘探,2008,13(2):45～52.
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