2007•Xinjiang shiyou dizhiRequires access

Migration Directions of Silurian Crude Oil in Tazhong Area

Chen Yuan-zhuang

Abstract

Carbazole non-hydrocarbon compounds are used as tracers for investigation of Silurian oil migration direction in Tazhong area,Tarim basin.The results from their abundances,parameter variations indicate that the movable oil has unremarkable distillation efficiency of lateral migration and proximal feature similar to the Cambrian-Ordovician source rocks in Manxi area and slope of northern Tazhong area,with lateral migration directions towards Tazhong 47 from SE to S,and then Tazhong 11,Tazhong12-50 and Tazhong 16 structures.Vertically,the movable oil migration of Silurian has a tendency from lower to upper sections.The process of the oil migration is controlled by regional structures and the direction of the oil migration is consistent with the strike of major faults of Silurian.

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Key concepts: Geology, Tarim basin, Ordovician, Geochemistry, Petrology, Hydrocarbon, Source rock, Geomorphology