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通过对岔路河断陷双二段致密储层岩石学特征、储层物性特征、孔隙结构特征、成岩演化史及次生孔隙成因研究的基础上,分析气源岩及生烃演化、储层及分布特征,气源断裂形成演化、致密储层充注动力,确定致密砂岩气藏形成机制并建立天然气运聚模型。确定富气规律和控制因素,进行有利区带优选、归纳致密气藏分布规律,指出有利勘探区。
Based on the study of petrological characteristics, reservoir physical properties, pore structure characteristics, diagenetic evolutionary history and secondary porosity of the Shuanghe section of the Chaluhe fault depression, the gas source rocks, hydrocarbon generation and evolution, Distribution characteristics, formation and evolution of gas source fractures, dynamic charge of tight reservoirs, the formation mechanism of tight sandstone gas reservoirs and the establishment of a natural gas migration and accumulation model. Determine the law of rich gas and control factors, to carry out favorable zone optimization, summarized the distribution of tight gas reservoirs, pointed out that the favorable exploration area.