摘要
混相驱是采收率较高的开采方法之一，其采收率可达９０％以上。混相驱的关键是根据原油组份确定混相压力，以筛选相适应的注入溶剂和油藏类型。该文收集了近期国外混相驱的研究成果，并加以系统筛选、归纳，从混相原理入手，详细分析了不同溶剂的混相机理及混相条件、抑制溶剂“指进”的注入参数，并推荐了确定混相压力的室内试验仪器及试验方法、程序，推荐了有发展前景的混相驱类型。这对我们开展混相驱研究和矿场推广应用有一定的参考和借鉴价值。
Miscible displacement is one of the EOR, its recovery percent can be more than 90%. The key of miscible displacement is determination of miscible pressure based on the crude components and injected solvent. This paper collected recent foreign research achievement on miscible displacement, analyzed miscible mechanism and conditions for different solvents, recommended apparatus, method and procedure for lab experiment, and recommended prospective miscible type.
