By the study of anatomy of oil spatial matching reservoirs and space matching relation between oil reservoirs and oil accumulation conditions, accumulation laws of Kin5 in main central depression zones of Haita Basin was studied. It is considered that there are seven oil reservoirs sealed by antithetic fault, small anticline updip pinchout of lithology, sandstone lens, fault-lithology and sandstone lens fault, small Anticline updip pinchout of lithology, Sandstone lens, fault-lithology and structure-litholo-gy. Oil accumulation and distribution are controlled by the following factors: sourcerock areas controls oil accumulation and distribution areas; caprocks control horizons of oil accumulation and distribution, antithetic fault tilting provides favourable places for oil to accumulate; front sandbody of fan delta provides favorable reservoir space for oil to accumulate; early extend fault provide sealing conditions for oil to accumulate. Oil accumulation model is flat oil from migration and accumulates in complex traps on antithetic fault tilting, complex traps on uplift in sag lithology traps in sag.%为研究海塔盆地中部主要断陷带南一段油分布规律,采用油藏解剖和油藏与成藏条件叠合的方法,分析油成藏规律.结果表明:南一段油成藏与分布主要受到4方面因素控制:(1)源岩区控制油成藏与分布的范围;(2)反向断裂翘倾隆起是油聚集成藏的最有利部位;(3)扇三角洲前缘亚相砂体为油聚集提供有利储集空间;(4)早期伸展断裂为油聚集提供遮挡条件.为南一段源岩生成的油向反向断层翘倾隆起复合圈闭、洼中隆复合圈闭和洼槽岩性圈闭中运移聚集形成不同类型油藏模式.
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