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储层孔隙结构的定量表征对于低渗透油藏开发至关重要,目前孔隙结构的获取多依赖于实验分析,周期长且连续性差,制约了孔隙结构的进一步分析及应用。核磁共振测井是储层不同尺度孔隙空间的综合表征,因此在一定程度上可以反映孔隙结构。基于核磁共振测井资料,以压汞参数为刻度,建立了基于T2分布与孔隙结构之间的数理统计模型,并以渤南油田沙三中亚段为例进行了应用分析,达到了单井孔隙结构连续性定量评价的目的,该研究思路可为同类型油藏的孔隙结构研究提供借鉴和参考。
The quantitative characterization of reservoir pore structure is very important for the development of low permeability reservoirs. At present, the acquisition of pore structure is mostly dependent on experimental analysis, with long period and poor continuity, which restrict the further analysis and application of pore structure. NMR logging is a comprehensive characterization of pore space at different scales of the reservoir, so it can reflect the pore structure to a certain extent. Based on NMR logging data and mathematical model of mercury intrusion porosimetry, a mathematical model based on T2 distribution and pore structure was established. By using the analysis of the middle member of Sha 3 in Bonan oilfield as an example, The purpose of quantitative evaluation of the continuity of pore structure is to provide reference and reference for the study of pore structure of the same type of reservoirs.