The Control Of Arabian Plate Evolution On Oil And Gas Enrichment

The Middle East,especially the Persian Gulf and its surrounding areas,is the area endowed with the most abundant oil and gas resources in the world.Based on the data of public literatures,commercial database and previous research results,this research conducts a comprehensive regional geological study of the Arabian plate,and studies the petroleum systems,and main control factors for oil and gas enrichment.The Arabian plate has experienced five stages of evolution,which are the Pre-Cambrian basement amalgamation,the late Precambrian-early Silurian proto-Tethys ocean craton,the late Silurian-Middle Permian Paleo-tethys ocean margin craton,the Late Permian-early Late Cretaceous Neo-tethys ocean passive margin and the Late Cretaceous-present foreland basin evolution.Regional tectonic evolution has controlled the enrichment of oil and gas,and the superposition development of the inner shelf depression in the Arabian basin has resulted in the superposition of a number of petroleum systems.The tectonic activity plays a constructive role in hydrocarbon accumulation and enrichment.Its functions mainly include the development of hydrocarbon source rocks such as salt basin and intra-shelf depression,the formation of large-scale paleo-uplifts and local structures(anticlinal structures formed by basement uplift,anticlinal structures formed by salt activity and anticlinal structures formed by compression),and the improvement of petro-physical properties following fracturing of reservoir(such as Asmari Limestone in the Zagros basin).