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作 者:胡素云[1] 陶士振[1] 王民[2] 庞正炼[1] 白斌[1] 陈燕燕[1] 卢双舫[2] 陈悦 杨怡青 金旭[1] 贾进华[1] 王建 张天舒[1] 林森虎[1] 吴因业[1] HU Suyun;TAO Shizhen;WANG Min;PANG Zhenglian;BAI Bin;CHEN Yanyan;LU Shuangfang;CHEN Yue;YANG Yiqing;JIN Xu;JIA Jinhua;WANG Jian;ZHANG Tianshu;LIN Senhu;WU Yinye(Research Institute of Petroleum Exploration&Development,PetroChina,Beijing 100083,China;China University of Petrolum(Hua Dong),Qingdao 266580,China)
机构地区:[1]中国石油勘探开发研究院,北京100083 [2]中国石油大学(华东),山东青岛266580
出 处:《石油勘探与开发》2023年第3期481-490,529,共11页Petroleum Exploration and Development
基 金:国家科技重大专项“致密油形成条件、富集规律与资源潜力”(2016ZX05046-001)。
摘 要:通过中国陆上不同类型致密油典型实例解剖,开展烃源岩、储集层、原油等样品测试分析,运用核磁-驱替物理模拟、格子玻尔兹曼数值模拟等技术方法,研究了中国陆相湖盆致密油充注运聚机理与富集主控因素。研究表明陆相湖盆致密油充注运聚机理:优质烃源岩生排烃动力是决定致密油充注效率和聚集效果的动力基础,原油运移阻力是影响致密油充注效率和聚集效果的关键要素,充注动力与致密储集层孔喉阻力耦合作用控制聚集效果及富集程度。陆相湖盆致密油富集程度主要受烃源岩、储集层孔喉大小、储集层结构各向异性及裂缝4大因素控制:优质烃源岩控制致密油近源分布,储集层物性及孔喉大小与致密油富集程度呈正相关,储集层结构各向异性揭示顺层运移速率最高,层内裂缝提高运聚效率与含油饱和度。Based on the typical dissection of various onshore tight oil fields in China,the tight oil migration and accumulation mechanism and enrichment-controlling factors in continental lake basins are analyzed through nuclear magnetic resonance(NMR)displacement physical simulation and Lattice Boltzmann numerical simulation by using the samples of source rock,reservoir rock and crude oil.In continental lake basins,the dynamic forces driving hydrocarbon generation and expulsion of high-quality source rocks are the foundational power that determines the charging efficiency and accumulation effect of tight oil,the oil migration resistance is a key element that influences the charging efficiency and accumulation effect of tight oil,and the coupling of charging force with pore-throat resistance in tight reservoir controls the tight oil accumulation and sweet spot enrichment.The degree of tight oil enrichment in continental lake basins is controlled by four factors:source rock,reservoir pore-throat size,anisotropy of reservoir structure,and fractures.The high-quality source rocks control the near-source distribution of tight oil,reservoir physical properties and pore-throat size are positively correlated with the degree of tight oil enrichment,the anisotropy of reservoir structure reveals that the parallel migration rate is the highest,and intralayer fractures can improve the migration and accumulation efficiency and the oil saturation.
关 键 词:致密油 核磁-驱替物理模拟 格子玻尔兹曼数值模拟 充注运聚机理 富集因素 陆相湖盆 致密储集层
分 类 号:TE122.1[石油与天然气工程—油气勘探]
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