“三低”储层岩电关系研究
Study of the Lithology-Electric Property Relation in "Three-low Reservoir
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摘要: 通过对“三低”储层的研究,发现“三低”储层的岩电关系为一三次非线性的函数关系。分析了这种关系式与阿尔奇关系式的区别与联系,指出孔隙结构是决定岩电关系的主要因素。由于在“三低”储层情况下,矿化度的变化对岩电关系具有明显的影响,因此文中还给出了形成这种影响的解释及岩电关系与地层水电阻率之间的近似定量关系.Abstract: The study shows that the lithology-electric property relation in "three-low reservoir"(low porosity,permeability and formation water mineralization)is a cubic nonliner function. This paper suggests that pore structure is the main factor of determining the relation,and mineralization has clcar influencc too. Then gives the explanation of influence and relational expression between lithology and formation water resistivity.