CT理论与应用研究2024，Vol.33Issue(3)：273-288,16.DOI:10.15953/j.ctta.2023.185
基于岩石物理模型的碳酸盐岩物性参数替换方法
Carbonate Rock Physical Property Parameter Substitution Method Based on Rock Physics Models
摘要
Abstract
The physical properties of carbonate rocks play a crucial role in the exploration and development of oil and gas.Carbonate rocks are characterized by multiple types of porosity,and the complex porosity types result in a highly discrete relationship between porosity and elastic parameters.In this paper,a method based on rock physics models for substituting the physical property parameters of carbonate rocks is proposed.Initially,rock physics modeling is conducted on carbonate rock reservoirs,and inversion of the equivalent pore aspect ratio in the model is performed.During the substitution,all other parameters are kept constant,and only one of the porosity,calcite content,water saturation,or volumetric fraction of pore shapes is changed.In combination with amplitude versus offset(AVO)theory,forward modeling simulations are performed.The simulations reveal that the impacts of changes in porosity and pore shapes on seismic response are more significant,far exceeding the influences of variations in calcite content and water saturation,which have a weaker effect on seismic response.Application of actual data demonstrates that the method for substituting the physical property parameters of carbonate rocks proposed in this article can effectively analyze the impact of changes in physical property parameters and pore shapes,characterize the physical properties of rocks,and determine the types of rock porosity.关键词
岩石物理反演/碳酸盐岩/孔隙结构/物性参数Key words
rock physics inversion/carbonate rocks/pore structure/physical property parameters分类
天文与地球科学引用本文复制引用
马凌波,张佳佳,张广智,谷一鹏..基于岩石物理模型的碳酸盐岩物性参数替换方法[J].CT理论与应用研究,2024,33(3):273-288,16.基金项目
国家自然科学基金(碳酸盐岩储层孔隙结构与物性参数地震非线性反演研究(42174146)). （碳酸盐岩储层孔隙结构与物性参数地震非线性反演研究(42174146）
