核磁共振测井在储层孔隙结构评价中的应用  

The Application of NMR Log Data in Evaluation of Reservoir Pore Structure

作　　者：邵维志[1,2] 丁娱娇 刘亚 刘诗琼[2] 李玉泉 赵金河 

机构地区：[1]中国石油渤海钻探工程有限公司测井分公司,天津300280 [2]西南石油大学,四川成都610500

出　　处：《测井技术》2009年第1期52-56,共5页Well Logging Technology

摘　　要：通过大量的实验室核磁共振T2谱和压汞曲线的对比分析,提出了利用二维分段等面积法计算T2谱与压汞曲线之间刻度转换系数横向刻度系数,以及大、小孔径的纵向刻度系数,使计算得到的伪毛细管压力曲线与实验室压汞测量的毛细管压力曲线的一致性得以大大提高。同时,建立了这些转换系数与现场核磁共振测井间的函数关系,实现了利用现场核磁共振测井资料获得定量的、连续的、高精度的伪毛细管压力曲线和孔隙结构特征参数曲线目的。将研究成果用于复杂储层评价中,取得了很好的效果。Based on comparison between mercury penetration and NMR logging data, proposed is a method to calculate the transverse graduate conversion coefficient and the longitudinal conversion coefficient of big and small aperture between T2 spectrum and intrusive mercury curve using 2D division coordinator and equal volume calculation method. Calculated fake capillary pressure curve almost accords with the result measured by intrusive mercury curve in lab. Established are function relation between NMR logging data and the conversion coefficients. The method can acquire quantitative and continuous and high precision fake capillary pressure and pore structure parameter curve with NMR logging data. The method is applied in complex reservoir evaluation. The application effect is good.

关 键 词：核磁共振测井 孔隙结构 毛细管压力曲线 T2谱 孔径分布 等面积刻度 转换系数 

分 类 号：P631.24[天文地球—地质矿产勘探]