叠前时间偏移技术在河南BMZ地区的应用  

The application of prestack time migration technology in BMZ Area

作　　者：张亚斌[1] 郑祝堂[1] 杜贤[1] 边建民[1] 

机构地区：[1]中国石化河南油田勘探开发研究院

出　　处：《油气地球物理》2008年第3期25-29,共5页Petroleum Geophysics

摘　　要：BMZ地区为一系列断鼻背斜构造控制油气的聚集和分布,小断块发育,构造破碎,储层很薄。油藏类型为断鼻断块、砂岩上倾尖灭、断层—岩性复合。以往的资料信噪比和分辨率不能满足构造和断层精细解释的需要。为此,在该区开展了叠前时间偏移成像技术研究,以落实局部构造、查明断层及岩性圈闭。文中介绍了叠前时间偏移基础资料的准备工作,讨论了主要偏移参数的测试和选取方法,给出了实际生产中的处理流程。处理结果表明,利用高精度三维叠前时间偏移处理技术能改善成像质量、提高地震资料分辨率和信噪比。The accumulation and distribution of oil and gas controlled by fault nose structure in BMZ Area, its minor fault blocks developed, its structure is crushing and its reservoir is thin. Reservoir type contents faulted noses and blocks, upward thin-out and fault-lithologic. The previous signal-tonoise ratio and resolution is low, and can＇t meet the requirement of structure and fault fine interpretation. So doing pre-stack time migration technology research in this area is to investigate detailed local structure and found out fault and lithologic trap. This paper introduced the basin data of pre-stack time migration. Main migration parameter test and selection method was discussed, and the practical processing flow was given. The result shows that, high-precision 3D pre-stack time migration technology improved image quality. The signal-to-noise ratio and resolution has been improved.

关 键 词：BMZ地区预处理 叠前时间偏移 速度分析 偏移参数测试 

分 类 号：P631.4[天文地球—地质矿产勘探] P618.110.2[天文地球—地质学]