用地震叠偏剖面编制构造图的原理及方法  

Principle and method for making seismic structural map by stacked migration section

作　　者：秦政[1] 朱克安 

机构地区：[1]成都地质学院物探系,610059

出　　处：《石油地球物理勘探》1994年第1期48-58,共11页Oil Geophysical Prospecting

摘　　要：为了提高地震资料解释结果的精度，本文给出直接利用地震叠偏剖面制作构造图的原理和方注：根据测网交点上共反射点等时的准则，统一纵、横叠偏剖面上的作圈层位；同时利用纵、横测线上观测的视铅垂时间，计算地震层位的真深度；根据断点在观测网上的纵、横偏移量，确定断层真实的空间位置。另外，文章对于线性和非线性连续介质的几种构造和断层模型，在正交测网、斜交测网、沿测线恒速和变速等多种情况下，分别进行了正、反演计算。计算结果和理论模型的吻合程度较高。该法经实际资料检验效果较好，与其它常用的作图方法相比，具有简便、高效率和高精度的优点，并有较广的适用性。The principle and method for making seismic structural map by stacked migration sections are recommended so as to improve .the seismic interpretation accuracy.Involved here are its essential points: 1)correlating the mapped seismic horizon instacked migration sections involved,according to the principle that cross-point reflection times in cross sections are epual; 2)the calculation of horizon depths by apparent vertical reflection times in each seismic section and 3)to determine the accurate locations of faulting points in terms of their shift values in the seismic sections.In addition,forward and inverse computations are performed for several structural and fault models in linear and nonlinear continuous media under the circum.stances:rectangular and nonrectangular seismic grids as well as constant and variedlateral velocities. Real result coincides with theoretical one quite well. This methodis practically proved to be quite effective. It has simpler procedure,higher efficiency,better accruacy and wider applicability than other usual methods do.

关 键 词：叠偏剖面 构造图 地震叠偏剖面 

分 类 号：P631.34[天文地球—地质矿产勘探]