摘要
目前中国陆上油田综合含水达 81% ,产量出现递减 ,发展注气提高采收率技术成为陆上石油工业发展的迫切战略性任务。由于CO2 混相驱在油田小范围的应用非常成功 ,开始进一步研究CO2 混相机理指导油田大规模开采。CO2 混相驱静混相机理 ,如CO2 在油中膨胀并降低原油粘度很完善 ,但动混相机理即CO2 混相多级接触过程中气液两相物性参数变化未详尽研究。建立计算CO2 多级接触过程流体物性参数的一维数值模拟方法 ,结合中原油田井流物数据对混相前缘及后缘气液相组成、密度、粘度等参数动态变化进行研究 。
Nowadays, synthetic water cut in on-shore oil fields reaches 81%. Outputs begin decreasing, as a result, developing enhanced oil recovery by injecting gas becomes a tactic task for sustainable development of on-shore oil industry. The wide range application of CO 2 injection based on the success of field test requires further study of mechanism of CO 2 miscible flooding procedure. Though it is well known that CO 2 decrease oil viscosity by swelling in it, the variation of physical parameters of each phase in the procedure of multiple contact is not well studied. In this paper, the author established a one-dimensional simulation method considering Zhong Yuan oil field to calculate and analyze such parameters as composition, density, viscosity and interfacial tension.
出处
《西南石油学院学报》
CSCD
2001年第2期33-36,共4页
Journal of Southwest Petroleum Institute
关键词
二氧化碳混相驱
接触过程
数值模拟
物性参数
采油
miscible flooding, contact procedure, numerical simulation, physical parameter
