Ahmed Abd El- Gawad Sultan
Tharwa Petroleum Company, Egypt
Title: Hydrocarbon potentialities evaluation for upper Bahariya reservoir at Horus oil field and its implications in field productivity, North Western Desert, Egypt
Biography
Biography: Ahmed Abd El- Gawad Sultan
Abstract
The cenomanian upper Bahariya member is an attractive petroleum exploration target in north western desert. The present work deals mainly with the interpretation of Well Logs, geological and geophysical data to evaluate the hydrocarbon potential of the upper Bahariya member in the Horus oil field. This achieved by constructing subsurface maps (isopach, sandstone isolith, siltstone isolith, triangle facies, clastic/non clastic ratio and sandstone/shale ratio) to show the areal variation of the lithostratigraphic unit and interpretation of environmental condition of the study area and the seismic data to determine the subsurface structure of the study area and the data obtained from 17 wells scattered in the area of study. The structural evaluation is represented by construction of time and depth structural contour maps on top of the upper Bahariya member. All the results of petro-physical parameters are represented vertically as litho-saturation cross plots and laterally in different iso-parametric maps, such as effective porosity, shale content, net pay thickness and hydrocarbon saturation variation maps. These maps revealed that the promising hydrocarbon bearing zones are characterized by their clay content ranges 15 to 23%, effective porosity ranges from 15 to 19%, net pay thickness ranges from 6 to 15 feet and hydrocarbon saturation ranges from 20 to 45%. The end results and the gain of this integration is a significantly better accuracy in reserve estimation and field productivity. It’s recommended to re-visit all well (17 Wells) which drilled before.