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作 者:朱平[1]
机构地区:[1]中国石油大学
出 处:《石油实验地质》2007年第6期549-553,共5页Petroleum Geology & Experiment
基 金:中国石油化工股份有限公司科技项目(P02067)
摘 要:北部凹陷位于南黄海盆地北部坳陷北部,是一个在中生代—古近纪强烈块断裂陷作用下形成的北断南超式箕状凹陷,泰州组和阜宁组2期湖泊相沉积的暗色泥岩是凹陷内的主要烃源岩;仪征运动、吴堡运动等多期具有旋回性的构造运动作用,沉积上导致多种储集体、生油岩互相叠置形成了多套生储盖组合,构造上产生了如背斜、断鼻和断块等圈闭类型。深凹中泰州组等烃源岩生成的油气,沿着断层、不整合面上的风化带和砂质岩运载层等,自深凹向上、向南、向斜坡运移,形成岩性、背斜、断鼻等多种类型的油气藏。凹陷自成一独立的含油气系统,平面上含油气圈闭沿千里岩断裂带和斜坡枢纽带呈串珠状展布,是南黄海盆地最有利的勘探地区。There is a graben-like sag with fault in the north and overlap in the south caused by severe block faulting effect from Mesozoic to Palaeogene in the north of the Northern Depression of the Southern Yellow Sea Basin.Lacustrine facies dark mudstone deposited during Taizhou and Funing periods is the main hydrocarbon source rock in the sag.Cyclic movements such as Yizheng and Wupu movements result in superposition of reservoir and source rock,forming multiple sets of source,reservoir and cap formation.Traps as anticline,fault nose and fault block are generated.Oil and gas in Taizhou Formation migrates through weathered zone in fault and unconformity and sandstone carrier bed to the up,the south and the slope,forming types of accumulations as lithologic,anticline and fault nose.The sag is an independent petroleum system.Petroleum bearing traps distribute like a string of beads along the Qianliyan Fault Belt and the Slope Pivot Belt,which are the most favorable regions for exploration in the Southern Yellow Sea Basin.
关 键 词:构造运动 油气勘探 含油气系统 北部凹陷 南黄海盆地
分 类 号:TE122.1[石油与天然气工程—油气勘探]
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