Reservoir Quality of Gargaf Formation in Belhedan Field by Used the Petrophysics properties &Repeat Formation Test & its Effect on Production, Sirt Basin, Libya

Abstract

This study is focused on the Gargaf Formation which represents the main reservoir production in the Belhedan Field with gross thickness that ranges from 130 to 187 feet. The aim of this study to determine the fluid contact with identifies the hydrocarbon zone. The gathered data that were utilized in performing this study are the petrophysical analysis of three wells (01-59, 02-59 & 03-59), using well log data such as (Gamma Ray Log, Resistivity Log, Neutron Log , Sonic Log and Density Log). The applications that were used are Techlog software for analyzing the log data, whereas the surfer software for mapping.

From analyzing the petrophysics data of the subjected reservoir, the results identify the reservoir contain column of hydrocarbon and water. Besides by integrating the results of petrphysics with RFT data for defining the reservoir fluid type and contacts. Moreover, the pressure profiles of Gargaf reservoir in subjected wells were constructed. Through the pressure profile and petrophysics data, most dominated hydrocarbon in the reservoir are mainly two phases Gas and Oil Zones.