耦合相对渗透率、斑块饱和与各向异性渗透率的Chapman模型横波速度频散研究  

Research on shear wave velocity dispersion of Chapman model coupled relative permeability,patch saturation and anisotropic permeability

作　　者：廖建平[1,2,3] 刘祥松 刘和秀 张学娟[3] 罗志坤 张青 周林 吴兆君 LIAO JianPing;LIU XiangSong;LIU HeXiu;ZHANG XueJuan;LUO ZhiKun;ZHANG Qing;ZHOU Lin;WU Zhaojun(School of Earth Science and Spatial Information Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Sinopec Key Laboratory of Geophysics,Sinopec Geophysical Research Institute Co.,Ltd.,Nanjing 211103,China;Chongqing Institute of Unconventional Oil and Gas,Chongqing University of Science and Technology,Chongqing 401331,China;Shengli Oilfield Dayuan Energy-saving Equipment Limited,Dongying 257100,China)

机构地区：[1]湖南科技大学地球科学与空间信息工程学院,湘潭411201 [2]中国石化地球物理重点实验室,中国石化石油物探技术研究院有限公司,南京211103 [3]重庆科技大学重庆非常规油气开发研究院,重庆401331 [4]胜利油田大源节能设备有限公司,东营257100

出　　处：《地球物理学进展》2024年第2期572-579,共8页Progress in Geophysics

基　　金：国家自然科学基金(42074167,41874156,41904116);湖南省自然科学基金(2023JJ30234);湖南省研究生科研创新项目(CX20221087);中国石化地球物理重点实验室开放基金(33550006-22-FW0399-0027,33550006-20-ZC0699-0012-ZR01);重庆科技大学科研项目(ckrc20231101,ckrc20231102)联合资助。

摘　　要：本文基于Chapman模型,在Chapman模型中引入了斑块饱和、相对渗透率模型和各向异性渗透率,研究讨论耦合斑块饱和、相对渗透率和各向异性渗透率这三个效应对横波速度频散的影响及其变化规律,研究发现其与频率有关:在中低频时,各向异性渗透率的影响最大;在高频时,斑块饱和效应的影响最大;而相对渗透率模型的影响在各个频率中都是最小的.理论分析和数值试验证实了部分饱和岩石地震各向异性如何被上述三种耦合效应所影响,提高了对含裂隙储层部分饱和岩石的频变地震各向异性的认识.In this paper,based on the Chapman model,patch saturation,relative permeability model and anisotropic permeability are introduced into the Chapman model.The effects of coupled patch saturation,relative permeability model and anisotropic permeability on shear wave velocity dispersion and their variation rules are researched and found to be frequency-dependent.The influence of anisotropic permeability is the greatest at middle and low frequencies,the influence of patch saturation is the greatest at high frequencies,and the influence of relative permeability model is the least at all frequencies.Theoretical analysis and numerical experiments demonstrate that how the seismic anisotropy of partially saturated rock is affected by the above three coupling effects,thus improving the understanding of the frequency-dependent seismic anisotropy of partially saturated rock with fractured reservoir.

关 键 词：相对渗透率模型 斑块饱和 各向异性渗透率 Chapman模型 横波速度频散 

分 类 号：P631[天文地球—地质矿产勘探]