Reservoirs Distribution and Hydrocarbon Accumulation of Ordovician Carbonate in Tazhong Uplift, Tarim Basin

Abstract

Many types of marine carbonate reservoirs are discorvered in Tazhong Uplift, and the later alteration is obvious. The marine sources rock including the Cambrian-lower Ordovician and the mid-upper Ordovician provided a great deal of hydrocarbon for the hudrcarbon accumulation. The hydrocarbon filled into all kinds of reservoirs many times to form the different types of reservoirs in later Caledonian to early Hercynian epoch, later Hercynian to early Indo-Chinese epoch, later Yanshanian to Himalayan epoch. All these made the characteristics of hydrocarbon accumulation complex very much.