基于数字岩石物理技术的裂隙方向对地震波速度影响规律研究  

Research on the Effect of Fracture Direction on Seismic Wave Velocity Based on Digital Rock Physics Technology

作　　者：许可 高启 杨俊杰 朱伟[1] 郝龙 XU Ke;GAO Qi;YANG JunJie;ZHU Wei;HAO Long(School of Geophysics and Petroleum Resources,Yangtze University,Wuhan 430100,China;Wuhan TerraMagis Energy Technology Co.,Ltd.,Wuhan 430074,China)

机构地区：[1]长江大学地球物理与石油资源学院,湖北武汉430100 [2]武汉拓盟能源科技有限公司,湖北武汉430074

出　　处：《河南科技》2023年第10期114-117,共4页Henan Science and Technology

摘　　要：【目的】研究裂隙方向对地震波传播速度的影响。【方法】基于数字岩石物理技术,建立含裂隙数字岩心,并变化裂隙方向,计算纵、横波速度;研究裂隙为水饱和与干燥时数字岩心的纵、横波速度与裂隙方向之间的关系。【结果】数值模拟研究发现,即使裂隙含量较小的情况下,裂隙方向的变化对地震波的传播速度具有较大的影响。【结论】研究成果对裂隙发育区的地震资料解释具有重要指导意义。[Purposes]The influence of fracture direction on seismic wave propagation velocity is studied.[Methods]Based on the digital rock physics technology,the digital core with fracture was established,and the fracture direction was changed to calculate the longitudinal and transverse wave velocities.The relationship between the P-wave and S-wave velocities of the digital core and the fracture direction whether the fracture is saturated by water or just dry is studied.[Findings]The numerical simulation re-sult shows that even if the crack volume is small,the change of crack-direction has a great influence on the seismic velocity.[Conclusions]The result has important guiding significance for seismic data inter-pretation in areas with cracked formations.

关 键 词：数字岩心 裂隙 各向异性 速度 

分 类 号：P631.4[天文地球—地质矿产勘探]