陈家洼陷沙三段油气藏成藏条件研究

Forming Conditions of the Third Section of Sandstone Reservori in Chenjia Depression

陈家洼陷是辽河断陷盆地西部凹陷内的一个生油洼陷。该洼陷地处兴隆台油田、曙北油田、冷东油田和高升油田之间 ,是几大油田的主要油源区。洼陷内在沙三段发育有多套浊积砂体和巨厚暗色泥岩 ,油气成藏条件十分优越。除自身具有良好的油源条件和储盖条件外 ,其构造和浊积砂体的空间配制关系是本区油气成藏的决定性因素 ,即 :断裂活动控制着圈闭 ;沉积相带控制着储层的发育及分布 ;

Chenjia depression lies in the west sag faulted of Liaohe basin among the xinglongtai Oilfield,Shubei Oilfield,Longdeng Oilfield and Gaosheng Oilfield,Which is the main oil source area.Many serious of turbidite sandbodies and huge thick dead color mudstone are developed in the depression.The spatial preparation relationship between the structure and turbidite is the dey factors for determining the forming of the oil and gas reservoir,that is ,fracturing activity control the trap,the sedimentary facies zones control the devlopment and distribution of reservoir,advantageous structrual lithofacies zone control the distribution of oil and gas.\;