利用T2谱评价板桥潜山油气藏

由于碳酸盐岩储集层岩性复杂、孔隙类型多、非均质性强等原因，用常规测井资料进行评价存在许多困难，而核磁共振测量井资料则为解廖该类问题提供了中有利的手段。利用核磁共振测井横向驰豫时间Ｔ２分布谱可直接反映岩石孔隙半径大小的特性对板桥潜山碳酸盐岩储层类型进行了划分，其结果在ＦＭＩ成像图上表现出很好的一致性。另一方面，利用核磁共振测井的移谱法、差谱法、Ｔ２标准谱，结合电阻测井进行了储层流体性质识别，并划分出

Evaluation of Banqiao Buried Hill Reservoir with T2 Spectrum

Due to complex lithology, various pore types and serious heterogeneity of carbonate reservoir, it is difficult to use conventional logging data to evaluate the reservoir. But NMR logging provides a means for solving this kind of problem. Using NMR characteristic that transverse relaxation T_2 distribution can directly reflect the sizes of rock pores, Banqiao carbonate buried hill reservoirs are classified into different types, which show good consistency with FMI images. On the other hand, Banqiao reservoir effectiveness classification and its fluid type identification are made by T_2 spectrum shift, T_2 spectrum difference, T_2 distribution and conventional resistivity log.