核磁技术在轮南奥陶系碳酸盐岩储层评价中的应用

APPLICATION OF NMR LOGGING TECHNOLOGY IN ORDOVICIAN CARBONATE RESERVOIR EVALUATION IN LUNLAN

现代核磁共振测井技术的发展为提高利用测井资料进行油气层评价解释的精度提供了一种新的有效的手段；对于碳酸盐岩等复杂岩性油气藏，由于其储集空间复杂、非均质性强等因素，用常规测井技术难以进行准确描述。岩心核磁共振基础实验分析研究是核磁测井资料采集、处理解释分析及应用的基础。本文从岩心核磁实验资料入手并结合核磁测井实例探索了核磁技术在碳酸盐岩的应用，并很好地解决了在储层评价及储层参数研究中存在的难点：含烃饱和度的计算、确定孔隙度下限值和区分束缚孔隙流体和可动孔隙流体，在复杂多样的碳酸盐岩储层中效果不错。

Development of NMR logging technology provides a new method to improve the interpretation accuracy of hydrocarbon reservoir evaluation with well logging data.It is difficult to describe reservoirs of complicated lithology like carbonate rock accurately with conventional logging due to complex reservoir space and heterogeneity.The experimental analysis about core nuclear magnetic resonance is the foundation of data acquisition,processing,interpretation,and application of NMR logging.Application of NMR technology in carbonate rocks is discussed in the paper with some NMR logging cases.It has solved the problems in reservoir evaluation and reservoir parameter study including calculation of hydrocarbon saturation,determination of the lower value of porosity and discrimination of bound pore fluids and movable pore fluids. It has gained good result in various complicated carbonate reservoirs.