【摘要】 以地震和钻井资料为依据,分析了济阳坳陷古近纪古地貌特点及其对隐蔽油气圈闭储集岩的控制作用。研究结果表明,在箕状断陷背景上,断裂活动、冲刷和侵蚀作用、大型沉积体推进等因素形成的多级地形坡折和不同类型的沟槽、洼地围绕着沉积和沉降中心有序地分布,构成了济阳坳陷古地貌的主要特点,控制了储集岩的类型、发育程度、分布位置和外部形态。盆地古地貌决定了物源和沉积体系的基本格局与发展历史,局部的古地貌单元决定了沉积作用发生的地理位置。其中,多级地形坡折控制了不同相带构造位置的类型及发育程度,古沟槽指示了沉积物搬运的主要方向,古洼地则是沉积作用发生的首选地点。以古地貌分析为出发点,是预测岩性圈闭储集岩的重要途径。更多还原

【Abstract】 Based on seismic and drilling data of Jiyang Depression,the paleogeomorphologic features and their controls on the reservoirs of subtle traps are analyzed.The result indicates that surrounding the deposition or subsidence centers,multi-grade topographic breaks,different types of troughs and low-lying lands which are formed in faulting,eroding or depositing,and developing of large-scale sand systems,distribute orderly as the main paleogeomorphologic components of Paleocene Jiyang dustpan-like depression,and control the type,maturity, position and morphology of reservoir rock.The basin-grade paleogeomorphologies determine the frameworks and their history of provenance and deposition systems,meanwhile,the local units determine location of sedimentation.Among them,multi - grade topographic breaks control the changes of facies belts in type and development,paleo-trenchs determine the mεjor direction of the sediment transportation, and paleo-low-lying land is the preferred location for sedimentation.As an important approach,locating the position of reservoirs of lithololgical traps need study different paleogeomorphologies in the basin.更多还原