论文详情
地质规律约束下的波阻抗反演
石油物探
2002年 41卷 第No. 1期
阅读：92
查看详情
Title
The geology-constrained wave impedance inversion
单位
中国科学院地质与地球物理研究所, 北京100101
Organization
The Research Institute of Geology and Geophysics, Chinese Academe of Science, Beijing 100101,China
摘要
地质规律约束下的波阻抗反演是一种以褶积模型为基础的改进的波阻抗反演方法。针对波阻抗反演中的难点,充分考虑了沉积模式的特征,建立地层波阻抗模型;同时采用贝叶斯估计理论作为地震波阻抗反演的准则,建立目标函数;在约束条件中加入构造倾角的影响,借助于模拟退火算法,在地质规律的约束下利用地震资料求取地层波阻抗。
Abstract
The geology-constrained wave impedance inversion is an improved, convolution model-based approach of wave impedance inversion. To overcome the difficulties of impedance inversion, a model of wave impedance that fully accounts for the characteristics of depositional model is built, and an objective function is constructed based on theory of Bayesian estimation. The effects of structural dip are also accounted in the constraint conditions. Wave impedance is calculated using simulated annealing algorithm on seismic data under constraints of geological rules. The computation results from theoretical model show that the approach is feasible.
关键词：
地质规律;
波阻抗;
贝叶斯估计;
模拟退火;
目标函数;
Keywords:
geological rules;
wave impedance;
Bayesian estimation;
simulated annealing;
objective function;
论文详情