复杂断裂区深层地震资料成象技术——以大港油田千米桥地区为例  

Seismic Data Imaging Technique in Deep Complex Faulting Area-An example of Qianmiqiao area in Dagang oilfield

作　　者：张建伟[1] 程庆[2] 强芳青[2] 岳伏生[2] 

机构地区：[1]成都理工大学,四川成都610059 [2]中国石油石油勘探开发科学研究院西北分院,甘肃兰州730020

出　　处：《新疆石油地质》2004年第1期44-46,共3页Xinjiang Petroleum Geology

摘　　要：通过对以大港油田为代表的东部深层地震资料进行深入的分析,提出了解决此类问题所采用的关键技术:叠前深度偏移与模型法提高信噪比处理,即在叠前深度偏移的深度域CRP道集(共反射点成象道集)上,利用模型的处理技术(模型法去噪、模型法静校正),实现CRP道集无时差叠加。这项技术是把模型约束思想和地震解释思想紧密结合起来采用处理解释一体化的工作方法,使深层地震资料能够较好地成象,取得了较好的解释结果。A key te ch nique is put forward by analyzing the seismic data from deep strata of Dagang o ilfield in East China.The technique is to combine the prestack depth migration with model processing for improving the signal-to-noise ratio,namely in commo n reflection point (CRP)trace gather of prestack depth migration,realizing it s zero time-shift stacking,by application of the model-based noise attenuatio n and model-based static correction methods.This tight combination between th e model constraint and the seismic interpretation can have the seismic data fro m deep strata better imagined,thus obtaining good results for geologic interpre tation.

关 键 词：地震资料 叠前偏移 深度域 信噪比 信息处理 

分 类 号：P631.44[天文地球—地质矿产勘探] TE132[天文地球—地质学]