【作者】 张元逊；

【导师】 邹乐君； 杨民瑜；

【作者基本信息】 浙江大学 ， 地质学， 2010， 硕士

【摘要】 目前头台油田台1区块开发面临着从易开发趋向难开发区和边远地区,从部分高含水向全面进入高含水、高采出程度,从储采基本平衡向严重不平衡过渡的严峻形势。地下油水分布情况发生了巨大的变化,呈现出高度分散、局部集中,剩余油多分布在差、薄、边部位,开采难度增大等特点,需要对储层进行全面深入的研究。本文对研究区——台1区块开展了沉积单元划分与对比、沉积微相与砂体展布形态等方面研究：沉积单元划分与对比研究遵循标准井→骨架剖面→外推横纵剖面的原则,优选关键井形成联井骨架剖面,以关键井为重点划分沉积单元,确定沉积单元的划分个数及界线；将关键井划分结果外推到骨架剖面,再由骨架剖面外推至与其联结的横、纵剖面上。共编制对比横剖面(东西向)69条,对比纵剖面57条(南北向),对研究区492口井进行了沉积单元划分及油层对比。沉积微相研究是依据对岩心的观察及研究区内钻井剖面所反映出的岩性组合和电性特征,并结合区域沉积背景分析,认为头台油田台1区块扶余油层属于三角洲相沉积,可分为三角洲前缘亚相和三角洲分流平原亚相沉积两种亚相和分流河道等10种沉积微相,对研究区分沉积单元绘制了沉积微相平面分布图,并对每个单元的砂体展布特征进行了详细描述。更多还原

【Abstract】 Many researches such as structure, dividing and correlation of the Sedimentary Unit, sedimentary microfacies, Sandbody Surface Shape, reservoir evaluation have been done in Tai 1 block in this paper:Dividing and correlation of the Sedimentary unit:a principle was followed, that was selecting key wells→making up main framework→other framework. The first step was to divide the sedimentary unit using key wells, the second was to make up main frameworks including these key wells, and the third was to make up oher frameworks. As a result,69 horizontal frameworks and 57 vertical frameworks were made up.Sedimentary microfacies study:the conclusion that delta facies were developed was summarized in the block after the study of core, Lithologica feature and electrical properties. The delta facies in the block were divided in to Delta distributary plain facies, delta front facies, and other ten microfacies such as distributary channel. Sedimentary microfacies pictures were drew with a detailed description to the sandbody feature in every sedimentary unit.更多还原