Abstract:
The aim of this study is to analyze water levels in the X oil field in Libya, with a particular focus on reducing unwanted water production and enhancing oil recovery. Petrophysical data extracted from well logs, including Gamma Ray, Spontaneous Potential, Sonic, Bulk Density, and Deep Induction Resistivity, were used to analyze two selected wells. The analysis concentrated on determining the average depths of water occurrence zones and evaluating their corresponding water saturation levels. The results of the analysis indicate the presence of water at approximately 8830 feet, with water saturation levels varying between wells, ranging from 0.14% to 0.94%. The interpretation of the log readings, using the cross-plot method for each well, was performed using Schlumberger Tech-log 2015 software.
The shale volume was determined based on the gamma ray log and the results showed that the Shale volume in the Wells formation ranges from about 17% to 40 % and this value increases toward the top of the formation. By identifying these depths and water entry zones, the study provides insights into water control techniques that can be implemented to improve well productivity and extend the productive life of wells.
