大连理工大学学报2017，Vol.57Issue(2)：119-125,7.DOI:10.7511/dllgxb201702002
储层条件下超临界二氧化碳与原油体系最小混相压力研究
Research on minimum miscible pressure of supercritical carbon dioxide and crude oil system under reservoir condition
摘要
Abstract
Developing oil by inj ecting carbon dioxide has become the important enhanced oil recovery technology for the ultra-low permeability oil field and extra-low permeability oil field in the current world.The ideal displacement is to form carbon dioxide miscible flooding in the process of oil displacement.The minimum miscible pressure is one of the key factors to form miscible flooding.So it is an important part of the realization of miscible flooding to predict the minimum miscible pressure quickly and accurately.The minimum miscible pressure prediction of the supercritical carbon dioxide and crude oil system under reservoir condition of the test area is studied through the long slim tube displacement experiment method and a variety of empirical formula methods.The minimum miscible pressure predicted by the long slim tube displacement experiment method is applied to analyze the relative error of the result of the empirical formula methods.The research results show that the minimum miscible pressure predicted by the long slim tube displacement experiment method is 29.15 MPa;the minimum miscible pressure values calculated by the various empirical formula methods are quite different:the maximum is 42.60 MPa,the minimum is 10.34 MPa,and the average value is 26.83 MPa;the average relative error to the long slim tube displacement experiment method is 7.96%.The relative error of PRIⅠ method proposed by Petroleum Recovery Institute is 1.26%, which is the smallest relative error among all of the empirical formula methods.关键词
最小混相压力/超临界二氧化碳/混相驱/长细管驱替实验法/经验公式法Key words
minimum miscible pressure/supercritical carbon dioxide/miscible flooding/long slim tube displacement experiment method/empirical formula method分类
能源科技引用本文复制引用
赵跃军,宋考平,范广娟..储层条件下超临界二氧化碳与原油体系最小混相压力研究[J].大连理工大学学报,2017,57(2):119-125,7.基金项目
国家重大科技专项(2011ZX05009) （2011ZX05009）
国家自然科学基金资助项目(51404070). （51404070）
