流花油田礁灰岩储层微观性质及驱替特征研究

发布时间：2018-01-23 18:26

  本文关键词： 流花油田 礁灰岩储层 微观性质 驱替特征 微观孔隙结构　出处：《西南石油大学学报(自然科学版)》2017年06期 　论文类型：期刊论文

【摘要】：与碎屑岩储层相比,礁灰岩储层的微观孔隙结构复杂且具有油湿性,其水驱油机理主控因素尚不明确。采用"岩芯扫描电镜、铸体薄片、压汞、润湿性"等静态资料与"微观驱替及岩芯驱替实验"等动态测试相结合的分析方法,建立了"静态数据动态化"的渗流机理研究新方法,明确了礁灰岩储层的微观性质与流体驱替特征的关系以及不同孔隙结构的剩余油分布规律。研究表明,流花礁灰岩储层微观孔隙结构可分为4类,其中,Ⅰ、Ⅱ、Ⅲ类为有利储层,具有低排驱压力、低退汞效率及强非均质性的特点,储层渗流能力与储层类型关系密切,主控因素有储层类型、孔喉半径比和润湿性3个关键因素。水驱前后的油水分布特点及不同岩芯驱替动态与驱替效果受储层微观性质控制并有直接的相关性。
[Abstract]:Compared with clastic reservoir, the pore structure of reef limestone reservoir is complex and oil wettability, and the main controlling factors of water flooding mechanism are not clear. By combining the static data such as wettability "with the dynamic test of micro-displacement and core displacement", a new method for studying the seepage mechanism of "static data dynamic" is established. The relationship between the microcosmic properties of reef limestone reservoir and fluid displacement characteristics and the distribution of residual oil with different pore structures are clarified. The study shows that the micro pore structure of Lihua reef limestone reservoir can be divided into 4 categories, among which, I. Class 鈪，

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