叠前逆时深度偏移技术在江苏高陡构造地区的应用  

The application of prestack depth reverse-time migration in steep dip structures area of the Jiangsu oilfield

作　　者：王丽[1] 王芳琳[1] 赵传雪[1] 陈海洋[1] 秦艳艳[1] 

机构地区：[1]江苏油田物探技术研究院,南京210046

出　　处：《物探化探计算技术》2015年第5期634-638,共5页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：叠前深度逆时偏移技术是一种基于精确波动方程的偏移技术,不受地下倾角和介质横向速度变化的影响。江苏油田苏北盆地地下地质构造复杂,断裂系统发育,用常归Kirchhoff叠前深度偏移技术很难准确成像,针对此实际情况,对陈堡三维进行了叠前逆时深度偏移处理,结果表明,在高陡倾角处断面成像上,叠前逆时深度偏移剖面较Kirchhoff叠前深度偏移剖面的品质有很大提高,断面清晰,断层归位准确,为后续解释工作打下了良好的基础。Prestack depth reverse-time migration is a new migration method based on accurate wave equation,it has no dip restriction or velocity variation restricition.The Subei basin in Jiangsu oilfield has complex structure.,The general seismic data of kirchhoff prestack depth migration are difficult to acquire the geological information exactly,for solving the seismic imaging problem.Using processing software Tsuanmi,process the seismic data in CB area of Suibei basin,The migration results with correct position and significant improvement on imaging steep dip structures complicated.The results provide an important basis for interpretation of the seismic data.

关 键 词：叠前深度逆时偏移 高陡倾角构造 速度模型 

分 类 号：P631.4[天文地球—地质矿产勘探]