中子测井矿化度、井径、岩性校正经验公式的建立及应用

Experiential Formulas for Neutron Porosity and Lithology Corrections and Their Applications

中子测井孔隙度受多方面环境因素的影响。其中矿化度、井径、岩性是进行校正时需考虑的最基本的 3个因素。依据美国阿特拉斯公司的 2 435补偿中子测井孔隙度的校正图版 ,介绍如何利用图版数据绘出关系曲线 ,再对曲线进行拟合 ,从而建立对视孔隙度进行矿化度、井径、岩性校正的经验公式并进行验证 ;介绍如何利用经验公式编程实现校正 ,以提高校正的准确性。

Experiential Formulas for Neutron Porosity and Lithology Corrections and Their Application. WLT, 2001, 25(4):298-302 Neutron porosity is often affected by several environmental factors, among which salinity, caliper and lithology are the most essential. Based on Atlas 2435 CN Response chart, the empirical formulas have been set up of correcting apparent porosity for salinity, caliper and lithology through drawing and fitting their relation curves. Formulization of CN Response makes it easy to correct porosity only by program.