Assessing reservoir properties and knowing the relationship between different reservoir parameters can significantly help to plan for production from a reservoir. In this study, which was carried out on the gas reservoir of the Triassic Dahram Group at the South Pars Gas Field, in southern Iran, petrophysical parameters such as porosity, shale volume, saturation of water and hydrocarbon, as well as amount of different minerals in the reservoir sequence, were first calculated using the probabilistic evaluation method. In the second step, for the separation of the sequential electrofacies, the multi-resolution chart-based clustering method was used resulting in recognition of five electrofacies with different reservoir geological properties. The results obtained from the first and second steps showed that the no. 5 electrofacies (EF-5), which has clean lime lithology and has the lowest water saturation, good porosity and high gas volume, was considered as the best reservoir facies in the studied sequence. Therefore, by separation of electrofacies, a suitable relationship can be found between different geological facies and petrophysical parameters of the reservoir.

中文翻译：

---

用于分离碳酸盐岩气藏层序电相的岩石物理参数和地质参数的聚类分析

评估储层特性并了解不同储层参数之间的关系可以显着帮助规划储层的生产。在伊朗南部南帕尔斯气田的三叠纪达赫拉姆组气藏中进行了这项研究，研究了岩石物理参数，例如孔隙度，页岩体积，水和碳氢化合物的饱和度以及不同矿物的数量在储层序列中，首先使用概率评估方法进行计算。在第二步中，为了分离连续的电相，使用了基于多分辨率图的聚类方法，从而识别出具有不同储层地质特性的五个电相。从第一步和第二步获得的结果表明没有。5个电相（EF-5），石灰岩岩性干净，含水饱和度最低，孔隙率高，瓦斯量大的油气藏被认为是研究序列中最好的储层相。因此，通过电相的分离，可以在不同的地质相和储层的岩石物理参数之间找到合适的关系。