论文部分内容阅读
核磁测井技术的出现和应用,为测井解释研究孔隙结构提供了一种有效方法。而通过研究核磁T2分布与压汞毛管压力曲线之间的关系,可以建立起二者之间的相互计算方法。本文结合多种核磁测井资料计算毛管压力曲线方法的优点,对核磁测井T2分布数据直接计算毛管压力曲线的方法进行改进,消除了致密砂岩储层孔隙结构和非均质性等影响因素对计算结果的影响,提高了致密砂岩储层核磁计算毛管压力曲线的精度,从而为核磁T2分布研究致密砂岩储层孔隙结构提供了可靠的理论和方法上的支持,拓宽了测井资料的应用范围。
The emergence and application of NMR logging technology provides an effective method for logging interpretation and study of pore structure. By studying the relationship between T2 distribution and capillary pressure curve, we can establish the mutual calculation method between them. Combining the advantages of capillary pressure curve method with many kinds of NMR logging data, this paper improves the method of calculating capillary pressure curve directly in T2 distribution data of NMR logging, and eliminates the influencing factors such as pore structure and heterogeneity of tight sandstone reservoir The accuracy of the capillary pressure curve of the tight sandstone reservoir is improved by the calculation results, which provides reliable theoretical and methodological support for studying the pore structure of the tight sandstone reservoirs with the T2 distribution of nuclear magnetic resonance, and widens the application range of logging data .