摘要
叠前三参数同步反演的优势是可以同时获得地层的纵波、横波和密度信息,进而定量描述储层的流体饱和度。提出了一种叠前三参数同步反演的新方法。该方法基于Zoeppritz近似方程和贝叶斯参数估计理论,用协方差矩阵来描述参数间的相关程度,然后用参数间的岩石物理关系对反演结果进行约束,从而得到稳定、准确、可靠的解。仿真实验和实际应用表明,该反演方法鲁棒性好,为储层的进一步识别提供了更多的物性参数。
The prestaek three-term simultaneous inversion method can be used to simultaneously acquire the information of P-wave impedance, S-wave impedance and density to quantify fluid saturation of reservoir. A new prestack three-term simultaneous inversion method was developed on the linearized approximation of the Zoeppritz equation and Bayesian parameter estimation theory. The covariance matrix was used to describe the degree of the correlation between parameters. The petrophysical relations of parameters were used to constrain the inversion results. The more steady, accurate and reliable solutions were obtained. The simulation test and practical application of this method show that all inverted parameters are almost perfectly retrieved for reservoir description.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2009年第2期232-236,共5页
Acta Petrolei Sinica
基金
国家重点基础研究发展规划(973)项目(2007CB209605)资助
关键词
三参数同步反演方法
协方差矩阵
贝叶斯参数估计理论
岩石物理约束
仿真实验
three-term simultaneous inversion method
covariance matrix
Bayesian parameter estimation theory
petrophysical constraint
simulation test
