【摘要】 东濮凹陷中央隆起带南部地区油气分布零星。油气成藏受主干断裂、烃源岩类型、生烃期次等因素控制。主要发育3种成藏模式:深层地垒带以石炭～二叠系为烃源岩,聚集早期(早第三纪)煤系生成的气形成古生新储煤成气藏;复杂断阶带发育反向正断、屋脊状圈闭,形成多期反向断阶油藏,具有反向断块成藏、高点富集的“一把刷子”的成藏特点;近洼斜坡带构造简单,临近油气源,但埋藏深度大,储层物性差,聚集晚期(晚第三纪)葛岗集洼陷生成的气形成斜坡带深层湿气藏。更多还原

【Abstract】 Small faulted blocks and scattered oil and gas are distrib-uted in the south of central uplift zone, Dongpu depression. Oil and gas reservoir-forming is controlled by the factors such as main faults, type of hydrocarbon source rock and times of hydrocarbon generation. There are three main reservoir-forming models in this ar-ea. In the deep horst belt, the gas source is the coal and mudstone in Carboniferous and Permian,gas which was generated early from coal-series accumulated to form coal-formed gas reservoir; in the complex step-faulted belt,reservoir is accumulated at the top of the en-echelon blocks by many times of hydrocarbon migration; in the slope near sag, structure is simple and near to hydrocarbon rocks, but reservoir permeability is low because of deep buried depth, gas generating and migrating lately from Gegangji sag accumulated to form wet gas reservoir in the slope belt.更多还原