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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。
Based on the data of earthquakes and drilling, the palaeogeomorphology of Jiyang Depression and its control on the subtle trap of oil and gas trapped reservoirs are analyzed. The results show that on the background of the half-graben faulting, there are multilevel terrain slope fractures and different types of trenches formed by faults, erosion and erosion, large-scale sediment propulsion and other factors. The depressions around the sedimentary and sedimentary centers are orderly Distribution, constitute the main features of the ancient geomorphology of Jiyang depression, controlling the type, degree of development, distribution location and external shape of the reservoir rock. The paleogeomorphology of the basin determines the basic pattern and development history of the provenance and sedimentary systems. The local paleogeomorphic units determine the geographical location where sedimentation takes place. Among them, the multi-level terrain slope control the type and degree of development of different facies belts, the ancient trench indicates the main direction of sediment transport, paleo depression is the deposition of the preferred place. Based on palaeogeomorphology analysis, it is an important way to predict lithologic trap reservoir rocks.