【作者】 孙继业；

【导师】 陈汉林； 闫百泉；

【作者基本信息】 浙江大学 ， 地质学， 2009， 博士

【摘要】 在油田开发过程中,很多油层都是复合砂体,随着油田开发的深入,含水增高,层内水洗状况及剩余油分布变得越来越复杂,影响水淹与剩余油分布的单砂体因素研究越显重要,剩余油空间上分布零散,挖潜困难,如何挖潜这些剩余油已成为目前提高采收率的重大难题。从平面沉积微相角度识别单砂体,从平面、层内(小层韵律性)研究非均质性及剩余油分布,能够很好地认识地下复杂单砂体的平面分布、宏观非均质性及剩余油分布规律,所以基于成因单砂体沉积微相研究显得尤为重要。本次研究选择松辽盆地某区对比难度极大的FY油层作为研究对象,精细解剖了各沉积时间单元平面沉积微相分布特征。通过精细对比,将原来的12个小层细分为25个沉积时间单元。在区域沉积背景、垂向相序演化、特别是密井网单砂体解剖等方面精细研究的基础上,认为研究区为保康河流—浅水三角洲沉积体系,并对其进行了储层评价,以砂体发育特征、含油性等为考核指标,将25个沉积时间单元的储层分为4类,在此基础上并对水驱开采提出了建议,为后期开发及单砂体内部建筑结构研究奠定了坚实的基础。同时,通过本次研究总结并提出了一套岩性预测技术,能够很好的解决扶扬油层薄、窄、小、少且复杂多变难于预测的难题。更多还原

【Abstract】 Research of sedimentary microfacies is a very important basic work in process of oilfield development. The planar distribution characteristics of sedimentary microfacies of FY reservoir in SongLiao basin which the character is very complex are studied systematically by this paper. Through the accurate correlation. The original 12 sedimentary layers are broken into 25 sedimentary units, and the reservoir quality are evaluated also. Based on the features of sand body development and oil-bearing, 25 sedimentary units are sorted out 4 types of reservoir. On the basis of these research, this paper also discusses the water fluid drive development of FY reservoir. These resultes provide an important basic for the research of architecture inside sand body and futrue development.更多还原