对子长油田安定地区延长组长6 油层油气成藏条件进行了研究，认为该区长6 油层属典型的低渗—超低渗储层，生、储、盖组合单一；湖相烃源岩为油气的生成提供了物质保障；泛滥平原相、沼泽相泥岩为油气成藏提供了良好的盖层条件；长6 油藏属于典型岩性圈闭油气藏，油气富集主要受物性、岩性及岩相等因素影响。有利的沉积相带和储层物性共同控制了长6 油藏的油气分布。

The forming conditions of Chang 6 reservoir in Anding area of Zichang Oilfield are studied. Chang 6 reservoir is typical low and ultra-low permeability reservoir, with single source-reservoir-seal assemblage. Lacustrine source rocks provided resource for the oil and gas generation, and flood plain facies and paludal facies mudstone supplied cap rock for the reservoir accumulation. The results show that Chang 6 reservoir is typical lithologic reservoir, and the hydrocarbon enrichment is dominated by reservoir properties, lithologies and lithofacies. Both the sedimentary facies zones and reservoir properties control the hydrocarbon distribution of Chang 6 reservoir.