【摘要】 蕴含丰富油气的碳酸盐岩孔洞型储层由于独特的非均质特性,使其地震横向预测成为油气地球物理勘探的一个难题。为此,应用物理模型技术模拟碳酸盐岩孔洞型储层,设计了包含孔洞大小、形状和洞内填充物变化的三种物理模型,在物理模型实验数据的基础上分析了碳酸盐岩孔洞型储层的地震波响应特征。实验分析结果表明:有一定发育规模的孔洞能形成强反射特征,在叠加剖面上表现为绕射双曲线,绕射双曲线的形态主要受孔洞埋深的影响;在偏移剖面上表现为背景差异明显的强短反射,且反射强度与洞体的大小、形状、洞内所含流体等各种因素有关;孔洞大小对反射能量的影响大于孔洞形状的影响。更多还原

【Abstract】 Because of the unique non-homogeneity in oil/gas-abundant carbonate reservoir,the lateral prediction of which is always the difficulty of oil/gas geophysical prospecting.For that reason,we applied the physical model technique to simulate carbonate reservoir,designed three physical models including pore-cave size,shape and variation of the material filled in the cave and analyzed seismic response of carbonate reservoir on the basis of experimental data of physical models.The analysis of experimental results showed that the strong reflection feature can be formed for the pore-cave with a certain development scale,showing diffraction hyperbola on stack section,the shape of which is mainly affected by buried depth of pore-cave;showing a strong short reflection with large background contrast on migration section,and the reflection strength is relative to various factors,such as pore-cave size,shape and variation of the material filled in the cave etc,in which the influence of pore-cave size on reflection energy is larger than the influence of pore-cave shape.更多还原