【摘要】 提出了一种基于岩石物理模型与混合优化算法同时反演孔隙度和饱和度的新方法。将孔隙度和饱和度的取值范围加入反演过程作为约束,能提高反演的稳定性和精度。基于地震纵、横波速度反演结果,直接得到油藏参数值。该方法也可以推广到直接利用地震振幅属性来进行反演。分析了不同属性组合对孔隙度和饱和度反演结果的影响。模型计算结果表明,该方法具有精度高、稳定性好等优点,同时易于推广到多种岩石物理模型、多地震属性组合与多参数定量反演中。更多还原

【Abstract】 A new method for simultaneous inversion of porosity and saturation based on rock-physics model and hybrid optimization method was presented.The principles of rock-physics model and hybrid optimization method and the inversion process were introduced.The valued range of porosity and saturation were entered into the inversion process and taken as the constraint of inversion to enhance the precision and stabilization of inversion.The seismic data used in the inversion were based on the inversion of seismic velocity.The influence of seismic attributes combination on inversion result was discussed.The forward modeling data show that the proposed method has some advantages of more precise inversion result and stable inversion process and can be generalized to the inversions using other rock-physics model,reservoir parameters and multiple seismic attributes.更多还原