物探化探计算技术2016，Vol.38Issue(3)：353-360,8.DOI:10.3969/j.issn.1001-1749.2016.03.10
基于改进粒子群算法的叠前弹性阻抗反演
Application of particle swarm optimization in prestack elastic impedance inversion
摘要
Abstract
Elastic impedance inversion is a combination technology of acoustic impedance inversion and AVO inversion, which can overcome the defects of post-stack impedance inversion and reflect the amplitude variation with offset.Elastic im-pedance inversion has been widely used to identify lithology and fluid.While conventional linear elastic impedance inversion methods strongly depend on the initial model and easily fall into local minimum,a nonlinear elastic impedance inversion based on improved particle swarm optimization is presented,which has been verified by model test.Finally,we applied this new in-version algorithm to the prestack seismic data in Shengli oilfield and achieved several elastic parameter profiles,which are con-sistent with the drilling results.The method has been proved to be a feasible and effective way for complex reservoir explora-tion.关键词
弹性阻抗反演/粒子群算法/非线性反演Key words
elastic impedance inversion/particle swarm optimization/nonlinear inversion分类
天文与地球科学引用本文复制引用
张进,陈晓琦,邢磊,安玲芳,赵玺,安振芳..基于改进粒子群算法的叠前弹性阻抗反演[J].物探化探计算技术,2016,38(3):353-360,8.基金项目
国家自然科学基金(41004046,41230318) （41004046,41230318）
