对三侧向测井视电阻率校正问题的评论

1.根据对图版数据的分析,强调定量解释不能直接引用深三侧向视电阻率; 2.对国产三侧向测井电极系Ⅱ,提出一种厚层侵入经验校正公式,它不同于建筑在传统几何因子近似基础上的校正公式,有助于对三侧向测井视电阻率校正问题作分析; 3.对侧向测井视电阻率只作侵入校正而无有效的层厚、围岩校正是不可取的。

COMMENT UPON THE CORRECTION PROBLEMS FOR THE APARENT RESISTIVITIES OF LATEROLOG

1. It is emphasized by an analysis of the data of the charts that quantitative interpretation cannot be based directly on the aparent resistivites of depth-laterolog of three electrode system without a correction.2. We propose here an empirical correction formula for formations with an unlimited thickness that is made for the sonde II of three-electrode system laterolog and is different from the traditional correction formula based on the geometeric factor approximations. It is helpful for investigating the problems concerning the correction of a.parent resistivities.3. We think that it is inadvisable if correction is made only on intrusion and is not effectively made also on the influences of both the bed thickness and the surrounding rock.