温西南三维叠前时间偏移处理技术及应用效果  

The Processing Technique of 3D Pre-stack Time Migration and Its Application Effect in Southwest Area of Wen Jisang

作　　者：胡建平 陈兴盛 张志更 王小冬 吴文熙 

机构地区：[1]中国石油吐哈石油勘探开发指挥部地质研究院,新疆哈密839009

出　　处：《吐哈油气》2005年第2期182-184,共3页Tuha Oil & Gas

摘　　要：当地层倾角较大时,反射点偏离较大,动校正叠加得到一个零炮检距剖面的假设,与实际情况相差较远,叠后时间偏移很难获得较理想的偏移归位效果。叠前时间偏移方法,从理论上取消了输入数据为零炮检距数据的假设,避免了动校正叠加所产生的畸变,是复杂地区地震数据成像较理想的方法。通过近两年的开发和应用,叠前时间偏移技术已经趋于成熟,在温西南地区,该技术取得了令人满意的效果。When stratigraphic dip is huge, reflection-point offset is obvious. An assumption that zero offset section will be obtained from normal-moveout correction stack differs greatly from actual situation; it is difficult for post-stack time migration to get perfect migration matching effect. Pre-stack time migration method, which theoretically cancels the hypothesis thst input data is zero offset data and avoids distortion resulted from normal-moveout correction stack, is a perfect method for seismic data imaging in complex region. Having been developed and applied for almost two years, pre-stack time migration technique tends to be mature. It has satisfying effect in southwest area of Wen Jisang.

关 键 词：叠前时间偏移 处理技术 应用 三维 零炮检距剖面 地层倾角 偏移归位 偏移方法 数据成像 复杂地区 偏移技术 西南地区 动校正 反射点 数据为 假设 叠加 理想 叠后 地震 

分 类 号：P631.4[天文地球—地质矿产勘探] X703[天文地球—地质学]