基于模型反演及其在STRATA软件中的应用

基于模型反演技术,是在精确层位标定、层序划分及储层精细对比的基础上,用地质统计技术建立储层格架模型,并利用测井资料垂向分辨率高和地震资料横向分辨率高的特点,对反映储层变化的波阻抗参数进行求取,以研究储层的分布及其变化细节。加拿大Hampson-Russellg公司研制的STRATA反演软件为一套交互2D/3D模型和反演软件,其功能是将叠后的地震道转换成波阻抗地震道,是目前广泛使用的一套地震数据反演软件。它提供了基于模型反演、宽带约束反演和稀疏脉冲反演等波阻抗反演方法。本文介绍了基于模型反演在STRATA反演软件中的实现。

Seismic inversion is playing an increasingly important role in reservoir charaeterization. On the basis of accurate horizone calibration, sequence classification, and fine reservoir correlation, a reservoir frame model was established by geostatisties. Reservoir parameters were calculated on logging and seismic data. STRATA which is usde populerly is made by Hampson--Russellg Company. It in cludes model based inversion, band limited inversion, sparse spike inversion.