Since oil is of great importance in the economy of Iran and the world, it is important to find hydrocarbon reservoirs and study their condition, which is done by geologists and reservoir engineers by various equipments and methods. Well charting or well surveying is a set of methods that provides continuous information about the various characteristics of the reservoir. In well drilling operations, with the help of different methods, information about the physical nature of the reservoir, including the various properties of the reservoir rocks as well as the fluids in it, is obtained. Well drilling plays a very important role in the oil industry and is called the eye of the oil industry because of the valuable information it provides. Due to this increasing importance, various tools and methods have been created and developed in this field. Especially with the advancement of human knowledge, the use of electronic and telecommunication technologies in the field of well surveying has expanded. Also, analysis of electrical facies is a reliable method in clustering well surveying diagrams that can show changes in geological and reservoir characteristics of different stratigraphic units. Electrical facies are one of the most important methods in the final evaluation of hydrocarbon reservoirs. Determining high quality reservoir zones can play an important role in the production of hydrocarbon reservoirs and field development. Electrical facies are defined based on data clustering. The basis of clustering is to place similar well surveying diagrams in the same groups and distinguish them from other groups. The present study has been carried out on Asmari Formation in one of the wells of Abuzar Square located in the northwest of the Persian Gulf. Separation of the reservoir into homogeneous sections in terms of petrophysical properties such as porosity and permeability is called rock type identification. There are several methods and equations for determining the type of rock. It is necessary to identify and separate reservoir zones based on these characteristics, but in most oil wells and even in all depths of a well, core extraction is not possible, but in almost all wells, mapping is done continuously. That is why it is important to find ways to estimate porosity using other available reservoir information. In general, by interpreting well surveying data as well as determining electrical facies and determining the type of reservoir rock, reliable results can be achieved for the evaluation of hydrocarbon reservoirs. In this study, all three methods have been implemented. In the study, the separation of reservoir zones was evaluated using well surveying data, and also the analysis of electrical facies and the determination of the type of rock were performed using core data, the results of which were compared.