摘要
运用综合地质分析方法结合岩心资料和测井资料,对柴达木盆地油砂山油田滩坝相沉积体系的岩性特征、沉积构造、沉积微相的划分和分布规律开展了深入的研究。从层内非均质性、层间非均质性、平面非均质性入手、探讨了油砂山油田滩坝相储集体的储集物性特点、单砂体的分布特点和控制作用。研究表明本区油砂体分布复杂、单砂体联通性较差,但剩余油相对富集,仍然有较大的勘探开发潜力。
For the sedimentary system of beach-bar facies in Youshashan oilfield,Qaidam Basin,its lithological features,depositional structure,and both classification and distribution of sedimentary microfacies are further studied by means of geological analysis combining core with well-logging data.Moreover,starting with heterogeneity in layers,among layers and in plane,some aspects of beach-bar reservoirs are discussed,such as their physical property,single sandbody's distribution and controlling factors.Results show that for the oil sandbody in the study area,(1) its distribution is very complex;(2)single sandbody is characterized by poor connectivity;and(3) there is still relatively abundant residual oil,resulting in a potential for exploration and development.
出处
《天然气勘探与开发》
2013年第4期17-21,6,共5页
Natural Gas Exploration and Development
关键词
油砂山
滩坝相
沉积特征
非均质性
Youshashan
beach-bar facies
sedimentary feature
heterogeneity