滨南地区沙三段重力流沉积特征及含油气性分析

Depositional characteristics and gas/oil distribution of gravity flow of third Member
of Shahejie Formation in Binnan Area

徐冠华 蔡进功 盖蓓 郑德顺 闫建平

中国石化胜利油田分公司西部新区研究中心，山东 东营 257045 同济大学海洋地质国家重点实验室，上海 200092 山东省东营市广饶县
质监局，山东 东营 257000 河南理工大学资源环境学院，河南 焦作 454000 西南石油大学资源与环境学院，四川 成都 610500

利用岩心、测井曲线及地震等资料，总结了东营凹陷滨南地区沙河街组三段重力流沉积特征，并将研究区重力流沉积类型划分为近岸水下扇及滑塌浊积岩，滑塌浊积岩又可分为远岸滑塌浊积扇及三角洲前滑塌浊积岩。在总结不同沉积相成因模式的基础上，建立了该区重力流沉积模式。结合油源、运移及圈闭条件，分析了各微相砂体的含油气性，结果表明，近岸水下扇滑塌形成的浊积扇体及近岸水下扇中扇辫状水道微相是最有利的储集相带。

Based on core, laboratory analysis, well logging and seismic data, the sediment characteristics of the gravity flow of the third Member of Shahejie Formation in Binnan Area of Dongying Sag are summarized. The gravity flow deposits are divided into two types, nearshore subaqueous fan and fluxoturbidite. Fluxoturbidite can be further classified into far?鄄shore slumping turbidite and front delta fluxoturbidite. Using the genetic models of different sedimentary facies, the gravity flow deposit model is also established. On the conditions of oil source, migration and trap, oil potentials of various types of microfacies sandbody are analyzed. The result shows that fluxoturbidite that is slided by nearshore subaqueous fan and braided river channel in nearshore subaqueous fan are the most favorable sedimentary facies belts in the Block。

10.6056/dkyqt201503003