基于双相介质简化传播方程的储层参数反演方法  

Reservoir parameter inversion method based on simplified propagation equation of two-phase medium

作　　者：朱童[1] 周单[1] ZHU Tong;ZHOU Shan(Sinopec Geophysical Research Institute,Nanjing 211103,China)

机构地区：[1]中国石油化工股份有限公司石油物探技术研究院,南京211103

出　　处：《地球物理学进展》2021年第6期2654-2666,共13页Progress in Geophysics

基　　金：国家自然科学基金项目(U19B6003)“海相深层油气富集机理与关键工程技术基础研究”资助。

摘　　要：双相介质的传播方程可同时考虑孔隙流体与骨架结构,但因为传播方程较为复杂,难以直接用于储层参数反演.通过推导公式对其进行了简化,将双相介质反射透射方程退化近似为储层参数方程,验证了简化方程的精确度,分析了主要储层参数的影响,并利用最小二乘方法对储层参数进行了反演.数值实验和实际资料表明,利用此简化传播方程进行反演方法可行,精度较高,且具有一定的抗噪能力.The propagation equation of dual-phase media can consider both pore fluid and skeleton structure, but it is difficult to be directly used for reservoir parameter inversion because of its complexity. A new dual-phase reservoir coefficient equation is derived from simplifying the original equations. The accuracy of the simplified equation is verified, and the influence of main reservoir parameters is analyzed, and the reservoir parameters are inverted by using the least square method. Numerical experiments and field data show that this simplified propagation equation inversion method is feasible, with high accuracy and anti noise ability.

关 键 词：双相介质 简化方程 储层参数 反演 

分 类 号：P631[天文地球—地质矿产勘探]