照明分析中面向目标的波场延拓算法  

Target-Oriented Wave Field Continuation Method for Illumination Analysis

作　　者：首皓[1] 孙鲁平[1] 刘红伟[2] 首晓洁 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国科学院地质与地球物理研究所,北京100029 [3]西安长庆科技工程有限责任公司,西安710018

出　　处：《新疆石油地质》2009年第6期764-766,共3页Xinjiang Petroleum Geology

基　　金：国家重点基础研究发展计划(2007CB209505);教育部博士后科研基金(20080430527)联合资助

摘　　要：利用照明分析设计观测系统,可以避免常规观测系统设计中因地下介质均匀假设带来的误差。对波动方程正演算法中的单程波方法进行了近似,提出了一种适合三维复杂介质且面向目标区域的快速波场延拓算法,可以直接对目标区域进行照明分析,无需从地表逐层延拓,计算精度与常规单程波方法相当。通过三维模型进行检验,证明了该方法的可行性。The seismometer pattern layout design with illumination analysis can avoid the errors from hypothesis of homogeneous media in its conventional system design. The approximated analysis of one-way wave method in forward algorithm of wave equation is conducted, and a quick wave-field continuation algorithm for 3-D complex media and target-oriented area is proposed to directly make an analysis of target area without bed-by-bed continuation from the surface. The precision of this method is similar to the conventional one-way wave method. The verification of 3-D model indicates that this method is feasible.

关 键 词：观测系统 波场延拓 单程波 照明分析 

分 类 号：P631.22[天文地球—地质矿产勘探]