论文部分内容阅读
储层储量评价是石油勘探开发中的关键问题,而饱和多相流体岩石的电传输特性是储层储量评价的基础.通常这种电传输特性表现为Archie公式,但是在低孔、低渗复杂储层的研究中发现大量不符合Archie公式的非Archie现象.针对这一问题,利用数值模拟的方法,从微观角度研究孔隙结构、流体特性等因素对电传输特性的影响,揭示非Archie现象的成因.研究表明Archie公式中的饱和度指数是饱和度、孔隙度的函数,通过结合岩石物理实验,提出新的岩电关系模型,新模型与实验数据吻合得很好,表明新模型的有效性.
The evaluation of reservoir reserves is a key issue in petroleum exploration and development, and the electrical transmission characteristics of saturated multiphase fluid rocks are the basis of reservoir evaluation. Generally, this electrical transmission performance is represented by Archie’s formula, but in the low porosity and low permeability complex A large number of non-Archie phenomena that do not fit the Archie’s formula are found in reservoir research.In order to solve this problem, numerical simulation is used to study the influence of pore structure and fluid properties on the electrical transmission properties from a microscopic point of view, The research shows that the saturation index in Archie formula is a function of saturation and porosity. By combining with the rock physics experiment, a new model of rock and electricity relationship is proposed. The new model is in good agreement with the experimental data, indicating the validity of the new model .