碳酸盐岩地层中双孔隙结构对电阻率及胶结指数的影响

The Effect of Double Pores System on Resistivity and Cementation Factor in Carbonate Formation

论述了双孔隙结构地层的导电机理,分析了次生孔隙度对电阻率值的影响。采用Maxwell- Garnet电导率模型评价双孔隙结构对电阻率的影响,从而求解出次生孔隙度,并推导出了可变胶结指数,它可以提高在碳酸盐岩双孔隙结构地层中应用阿尔奇公式计算饱和度时的精度。

Discussed is the conductive mechanism of do ub le pores system and analyzed is the effect of secondary porosity on resistivity . The MaxwellGarnet conducive model is used to evaluate the effect of the dou ble pores system on resistivity. In addition to this, we also introduce the co ncept of variable cementation factor which can improve the accuracy of oil satur ation calculation using Archie’s law in carbonate formation.