【摘要】 通过对 5条剖面和野外 1 1口井的岩心观察和室内资料分析整理 ,利用判别分析建立沉积相判别数学模型 ,为沉积相研究提供了科学有效的方法。以延长组 6段为研究目标 ,经分析断定靖安油田三叠系为三角洲沉积体系。构成主体的是三角洲前缘亚相 ,其中水下分支河道和河口砂坝最为发育 ,是含油气性最好的砂体 ,已具备了形成大规模油气藏的地质条件 ,应引起勘探上的注意。更多还原

【Abstract】 According to the observation of five sections and eleven wells outdoor and the analysis of materials indoor,discrimination mathematical model of division of sedimentary is set up in order to provide scientific and effective method research.The article chose chang 6 as study objective.After research,we think Jingan oilfield is system of delta.The main part of delta structure is in front of delta.The underwater branches and river mouth bars are skeletal sand bodies,which are composed of best paces for oil-gas gathering.更多还原