【摘要】 莱阳凹陷发现了大量的油气显示和油砂,说明该盆地有油气生成和油气的聚集,但钻孔未取得突破。为改变此现状,充分应用盆地内钻井取心资料,编制了岩心单井相分析柱状图。结合水南段沉积期特点,将莱阳盆地白垩系莱阳组水南段的沉积相划分为冲积扇、辫状河、扇三角洲、滨浅湖、深湖半深湖、近岸水下扇6种沉积相类型。在层序地层学理论指导下,将地质研究与地球物理手段相结合,对莱阳组地震资料进行综合解释、对地震相进行分析及对地震属性进行提取,再综合考虑原型盆地类型和区域构造背景,得出水南段的沉积相分布特征,对取得勘探突破具有重要意义。更多还原

【Abstract】 A great deal of oil and gas and oil sand are found in Laiyang Sag,which shows that oil and gas were generated and accumulated in the basin.However,drilling doesn’t indicate the existence of oil and gas.In order to solve this problem,coring data are fully applied to compile column diagram of facies analyses of a single well.The sedimentary facies of Shuinan Member of Laiyang Formation of the Cretaceous System of Laiyang Sag is classified into 6 facieses by combining the sedimentary properties of Shuinan Member,namely,alluvial fan,braided river,fan delta,shallow shore lacustrine,deep lake and semi-deep lacustrine and near-shore subaqueous fan.Based on the theory of sequence stratigraphy and the combination of geology study with geophysics,the seismic data of Laiyang Formation are comprehensively interpreted,seismic facies is analyzed and seismic attribute is picked up.Based on the work done above and the consideration of the prototype of the basin and the regional structure background,the distribution features of sedimentary facies of Shuinan Member are derived and are significant to the exploration breakthrough of Shuinan Member.更多还原