Analysis of the Petroleum System Elements of the Amana Oil Field, East Abu Gharadig Basin, Western Desert, Egypt

Abstract

The petroleum system elements that include source rocks, paths of hydrocarbon migration, reservoirs types, hydrocarbon traps, and seal rocks are essential in characterizing the hydrocarbon accumulation in the sedimentary basins. However, each part of these elements may be of different age and formed in different environment but these elements must meet in space and time in one petroleum system. The available well log and core data for some wells in the Amana oil field were used to perform a comprehensive petrophysical evaluation of the Abu Roach G Member. The evaluation of petroleum system elements in the Amana field shows that the source rock is the Middle Jurassic Khatatba Formation, which was deposited in a transitional environment. It comprises an oil and gas-prone organic matter (type II/III kerogen), that is believed to have entered the oil window defined by 0.6% vitrinite reflectance (Ro). The Interpretation of the available log data was used to evaluate the penetrated rock units in Amana field. The middle zone of the Abu Roash G Member which is sealed laterally at the top by shale intercalations in the Abu Roash G Member and by the Abu Roash F massive carbonates in other areas.