【摘要】 以钻井、测井资料和岩心(岩屑)资料为基础,结合三维地震资料,利用高精度层序地层学理论知识和方法,针对本地区目标层系开展研究,将沙河街组地层划分出三个三级层序、六个体系域,总结了不同层序地层在横向上的展布特点;分析各层序不同体系域的沉积充填特征,并总结出各层序沉积模式;以层序格架和沉积体系域为基础,分析目标层储盖组合,并对有利成藏区带进行预测,指出各层序储层可能发育的油藏类型和方位,对油气勘探具有重要的指导意义。更多还原

【Abstract】 On basis of drilling data,well logging data,well core data and 3-D seismic data,high accuracy sequence stratigraghy of the intended formations is studied,utilizing relative high resolution sequence stratigraghy knowledge and methods.Ultimately,3third-order sequences which contain 6system tracts are recognized and the distributional characters of which are described.The depositional characteristics of all tracts in different sequences are analyzed and depositional models are summarized of each sequence.Thereon,seals and reservoir sands are analyzed as a whole on the base of sequences and their tracts to help predicting where there most likely are petroleum accumulations.Reservoir types and their growing circumstances are also predicted,which will do good to oil and gas exploration.更多还原