Abstract:
This study is a geochemical evaluation of the Makhbaz Formation in the offshore well K137, Sabratah Basin, NW Libya. The TOC content indicated that the Makhbaz Shale is an excellent source rock. The organic matter is thermally mature and characterized by the sovereignty of type II kerogen. The most abundant gas in the petroleum inclusions of the Makhbaz Limestone (reservoir) is C1 with lesser amounts of C2, C3, nC4, iC4, N2, CO2 and H2S. There are two oil families in the petroleum inclusions. The Makhbaz Shale is the main source rock of Family I oils (heavy oils), whereas Family II oils (light oils) were probably derived from the Bilal Formation. All oils are thermally mature. There are two episodes of oil charging took place in the Makhbaz Reservoir.
