基于固体声弹理论的地震反射透射研究进展  

Research progress on seismic reflection and transmission based on solid acoustoelasticity theory

作　　者：陈阜斌 宗兆云[1,2] 印兴耀 Chen Fubin;Zong Zhaoyun;Yin Xingyao(National Key Laboratory of Deep Oil and Gas,China University of Petroleum(East China),Qingdao 266580,China;Laoshan Laboratory,Qingdao 266580,China;Centre for Exploration Geophysics,Curtin University,Perth 6845,Australia)

机构地区：[1]深层油气全国重点实验室(中国石油大学(华东)),青岛266580 [2]崂山实验室,青岛266580 [3]澳大利亚科廷大学勘探地球物理中心,珀斯6845

出　　处：《地球与行星物理论评（中英文）》2024年第3期344-357,共14页Reviews of Geophysics and Planetary Physics

基　　金：国家自然科学基金资助项目(42174139,41974119,42030103);崂山实验室科技创新项目(LSKJ202203406);中国国家留学基金委资助项目(202206450050);中国石油大学(华东)研究生创新基金项目(23CX04003A)。

摘　　要：多期沉积埋深及成岩过程使地下储层介质具有复杂初始地应力,应力范围跨度大且分布方向复杂.初始地应力对储层介质岩石物理与地震波传播响应具有显著影响.地震反射透射系数方程可以量化储层性质与地球物理观测数据的关系,构建考虑初始地应力作用的地震反射透射系数方程有利于更好理解深部储层界面处地震波传播特征,为深层油气勘探奠定理论基础,正逐渐受到国内外学者的关注.当前已提出的相关理论模型主要从固体声弹理论出发,考虑初始应力与地震波扰动引起的微小固体应变,聚焦岩石物理与地震反射透射参数化的理论方法研究,在应力诱导各向异性参数反演、地应力预测、油气储层识别等方面开展了初步实际应用探索.本文首先介绍固体声弹理论核心内容,然后介绍了基于声弹理论的地震反射透射模型、基本假设及其阶段性应用进展,讨论了方程的局限性以及在地震勘探领域的发展方向.Multi-stage sedimentation and diagenetic processes lead to complex in situ stresses in subsurface hydrocarbon reservoirs.The in situ stresses have a broad magnitude range and their distribution directions are complicated,significantly impacting the rock physics properties and seismic propagation response in reservoirs.Seismic reflection and transmission(R/T)coefficient equations can quantify the relationship between reservoir properties and observed geophysical data.Therefore,seismic R/T coefficient equations considering the effects of in situ stresses can help to better understand the characteristics of wave propagation on deep-strata stratigraphic interfaces,laying a theoretical foundation for exploring deep-strata hydrocarbon.This research topic is attracting the attention of international scholars.Most reported stress-dependent wave R/T coefficient equations consider the infinitesimal deformations induced by the in situ stress and wave perturbation based on the theory of acoustoelasticity;these approaches have been preliminarily applied in several theoretical and practical scenarios such as seismic inversion for stress-induced anisotropy parameters,in situ stress detection,and discrimination of oil and gas reservoirs.In this paper,we introduce the main body of solid acoustoelasticity theory and the stress-dependent seismic R/T coefficient equations based on acoustoelasticity theory,along with their basic assumptions,preliminary applications,limitations,and prospects in seismic exploration.

关 键 词：地震反射透射系数 固体声弹理论 初始地应力 深部储层 

分 类 号：P315.0[天文地球—地震学]