中国石油大学学报（自然科学版）2013，Vol.37Issue(2)：81-88,8.DOI:10.3969/j.issn.1673-5005.2013.02.014
修正混合规则的BWRS型状态方程及其在CO2-原油体系相态计算中的应用
A BWRS type EOS based on modified mixing-rule and its application in phase behavior of CO2-crude system
摘要
Abstract
CO2-crude systems are rich in non-hydrocarbon gases and are typical non-ideal systems at conditions of high pressure and high temperature in reservoirs. BWRS-EOS well applied in non-ideal system was chosen, \ as basement, and the mixing-rules of the EOS was modified to establish a new calculation method suitable for phase behavior of CO2-crude system. With the insitu petroleum samples data of vapor and liquid phase components from actual measurement, the calculation precision was compared between the components and density parameters by the new method and the common EOS. The results show that this method could be revised to the dependency relationship of virial coefficients which means a theoretical strictness. The accuracy of the equation is improved significantly. It is suitable for nonhydrocarbon gas and heavy constituent and can meet the industrial requirement.关键词
CO2-原油体系/BWRS状态方程/混合规则/逸度计算Key words
CO2-crude system/ BWRS equation of state/ mixing-rules/ fugacity calculation分类
能源科技引用本文复制引用
廉黎明,秦积舜,刘同敬,李实,姬泽敏,第五鹏翔..修正混合规则的BWRS型状态方程及其在CO2-原油体系相态计算中的应用[J].中国石油大学学报（自然科学版）,2013,37(2):81-88,8.基金项目
国家"973计划"课题(2011CB707304) （2011CB707304）
