人们对岩石导电模型的认识大体上经历了,从只考虑自由孔隙的阿尔奇公式到考虑黏土孔隙的双水模型,但进一步的实验研究发现,在某些纯砂岩中,出现了I-Sw弯曲现象,此时,只有将微孔隙单独考虑才能解释实验现象。结果发现,当含水饱和度较高时(约>60%),新模型计算效果较好,而当含水饱和度较低时(约<60%)效果不好。 People’s understanding of the rock conductivity model has generally gone through Archie’s formula that considers only free pores to double water models that consider clay pores. However, further experimental studies have found that in some pure sandstone, I-Sw bending occurs Phenomenon, this time, only the micro-pore alone can explain the experimental phenomena. The results show that the new model is better at high water saturation (about> 60%), but not good at low water saturation (about <60%).