核磁共振实验渗透率模型调整方法探讨  

Discussion on the permeability model adjustment method in NMR experiment

作　　者：高瑞琴 鞠江慧 熊孝云 王慧 剡慧君 温淑萍 郑波 Gao Ruiqin;Ju Jianghui;Xiong Xiaoyun;Wang Hui;Shan Huijun;Wen Shuping;Zheng Bo

机构地区：[1]中油测井华北分公司

出　　处：《国外测井技术》2024年第3期45-48,2,共5页World Well Logging Technology

摘　　要：Coates模型是常规储层饱和岩心核磁实验最经典的渗透率模型。该模型应用较为灵活,模型中关键参数有其区域的特征,在实际应用中可依据实际情况对参数进行调整。本文从三个区块T2谱特征出发,分析其岩性影响因素,确定各自的T2截止值以及关键系数,完善各区块的渗透率模型。针对特殊区块(L区块),依据T2谱数据的实际特点,完善渗透率计算模型。提高了核磁实验渗透率的计算精度。Coates model is the most classical permeability model in conventional reservoir saturated cores.The application of the model is relatively flexible,and the key parameters in the model have their own regional characteristics.In practical application,the parameters can be adjusted according to the actual situation.In this paper,starting from the T2 spectral characteristics of the three blocks,we analyze the lithology influencing factors,determine the respective T2 cutoff value and the key coefficient,and improve the permeability model of each block.According to the special block(L block),improve the calculation model of the permeability according to the actual characteristics of T2 spectrum data.Improved the calculation accuracy of permeability in Nmagnetic experiments.

关 键 词：核磁共振实验 T2谱 T2截止值 束缚流体 渗透率 

分 类 号：G63[文化科学—教育学]