【作者】 刘洋；

【导师】 张明学； 吴海波；

【作者基本信息】 大庆石油学院 ， 地球探测与信息技术， 2008， 硕士

【摘要】 肇源南地区位于朝阳沟阶地和长春岭背斜带之间。主要产油层位为扶余油层一、二组。储层以河流相为主。由于扶余油层特定的地质沉积条件,造成河道砂体横向上连通性极差、纵向多层错迭连片。传统的砂对砂、泥对泥的地层对比方式常常造成地震解释层位的不一致,给识别和预测河道砂体带来很大的难题。本次研究以肇源南地区为研究区,开展扶余油层一、二组高分辨率层序地层学解释,建立河流相高精度等时地层格架,在时间地层格架内开展精细地震建模反演与储层预测。本次研究在大量观察岩芯的基础上识别出了研究区扶余油层六种沉积微相类型,即曲流河道相、决口河道相、决口扇复合体、冲积平原、河间湖泊和开阔湖泊边缘相六种微相类型。并以大量岩心观察和岩-电对比为基础,建立了不同微相类型的岩心和测井识别标志。在河流相旋回界面识别标志的基础上运用多级次基准面旋回划分技术可以将扶余油层一二组划分为三个中期基准面旋回(四级层序)和五个短期基准面旋回(五级层序)。建立了扶余油层钻井等时间地层对比格架。在沉积微相及地层格架地基础上建立了研究区沉积模式、储集体的发育及演化模式。与此同时高分辨率层序地层分析与地球物理地层反演技术、属性提取技术、储层特征重构反演等技术相结合,完成储层分布的综合预测。在此基础上对研究区有利勘探区带提出建议。更多还原

【Abstract】 The south area of Zhaoyuan is situated at between terrace Chaoyanggou and anticlinal belt Changchunling. The main oil producing formations are the first and second groups of Fuyu oil reservoir. The main reservoir is fluvial face. The bad horizontal communication and longitudinal stack of channel sand is because of the particular condition of geologic sedimentation of Fuyu oil reservoir. The traditional stratum correlation method of sand with sand and shale with shale usually makes the seismic interpretational horizon discordant, and this makes the recognition and prediction of channel sand difficult. The south area of Zhaoyuan is target area of this research, and established developing interpretation of high resolution sequence stratigraphy of he first and second groups of Fuyu oil reservoir, and established high precision and isochronal stratigraphic framework of fluvial face, developing delicate seismic model building inversion and predication of reservoir in temporal stratigraphic framework.We identify six types sedimentary microfacies of Fuyu oil reservoir on the basis of great observation of rock core, as meandering river face, crevasse channel face, complex of crevasse splay, alluvial plain, interstream lake, widen lake fringe. At the same time, we established identification mark of different types of microfacies of rock core and well logging on the basis of considerable observation of rock core and correlation of lithology and electrical property. We divided the first and second groups of Fuyu oil reservoir into three middle basal level cycles (four-stage sequence) and five short basal level cycles (five-stage sequence)by using divided technique of multigrade basal level cycle on the basis of identification mark of fluvial face basal level cycle. We established the isochronal stratigraphic framework of Fuyu oil reservoir. We established sedimentary model and developing and evolving model of target area. At the same time, we completed the comprehensive prediction of distribution of reservoir using the combination of analysis high resolution sequence stratigraphy and many geophysical technologies. We proposed some suggestions about the beneficial belt exploration of target area on the basis of comprehensive prediction.更多还原