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焉耆盆地是我国西部众多中新生代小型含煤盆地之一。 1993年开始进行规模性勘探 ,先后探明了宝浪油气田和本布图油田。该盆地油气藏圈闭成因类型主要为与逆断层有关的背斜、断背斜油气藏 ;油气具有典型煤成烃特征 ,油气藏流体相态类型丰富 ,气油比高 ,流体性质好 ;油气藏几何类型以层状边水为主 ;油气聚集层位主要为侏罗系三工河组 ,油气层分布集中 ,单井油气层厚度大 ,埋深适中 ;侏罗系储集层主要为低孔低渗的孔隙型碎屑岩 ;压力系数较高 ,产能中等 ;单储系数低 ,储量丰度中等。通过烃源岩生排烃史、圈闭发育史和成藏史分析 ,研究了油气藏的形成机理 ,探讨了成藏模式
Yanqi Basin is one of the many Meso-Cenozoic small-scale coal-bearing basins in western China. 1993 began a large-scale exploration, has proven Baolang oil and gas fields and the cloth map. The genetic types of oil and gas traps in the basin are mainly anticorrosion and anticline anticlinal reservoirs. Oil and gas have typical characteristics of hydrocarbon generation. Oil and gas reservoirs are characterized by abundant phase facies, high gas-oil ratio and good fluid properties. The main type of reservoir is the laminar side water. The hydrocarbon accumulation layer is mainly composed of the Sangonghe Formation of Jurassic. The distribution of oil and gas layers is concentrated. The thickness of single well is large and the depth is moderate. The Jurassic reservoirs are mainly low porosity Low-permeability pore-type clastic rocks; high pressure coefficient, medium capacity; low single-reservoir coefficient, medium abundance reserves. Based on the hydrocarbon generation and expulsion history of hydrocarbon source rocks, the history of traps and the history of hydrocarbon accumulation, the formation mechanism of oil and gas reservoirs was studied, and the model of hydrocarbon accumulation