An improved correlation to determine minimum miscibility pressure of CO2–oil system

作     者：Guangying Chen Hongxia Gao Kaiyun Fu Haiyan Zhang Zhiwu Liang Paitoon Tontiwachwuthikul Guangying Chen;Hongxia Gao;Kaiyun Fu;Haiyan Zhang;Zhiwu Liang;Paitoon Tontiwachwuthikul

作者机构：Department of Chemistry&Chemical EngineeringZhoukou Normal UniversityHenanZhoukou466001China Joint International Center for CO2 Capture and Storage(iCCS)Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing Carbon-dioxide EmissionsCollege of Chemistry and Chemical EngineeringHunan UniversityChangshaHunan410082China Department of Petroleum and Chemical EngineeringQinzhou UniversityQinzhouGuangxi535000China Faculty of Engineering and Applied ScienceUniversity of ReginaReginaSaskatchewanS4S 0A2Canada 

出 版 物：《Green Energy & Environment》 (绿色能源与环境（英文版）)

年 卷 期：2020年第5卷第1期

页      面：97-104页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：The financial supports from the Scientific research start-up funding of Zhoukou Normal University (ZKNUC2016022) National Natural Science Foundation of China (21536003, 21706057, and 21606078) the Natural Science Foundation of Guangxi Province (2016GXNSFAA380190) are gratefully acknowledged 

主　　题：Minimum miscibility pressure Correlation CO2 miscible flooding Enhanced oil recovery 

摘      要：An accurate and reliable estimation of minimum miscibility pressure(MMP) of CO2-oil system is a critical task for the design and implementation of CO2 miscible displacement *** this study,an improved CO2-oil MMP correlation was developed to predict the MMP values for both pure and impure CO2 injection cases based on ten influential factors,*** temperature(TR),molecular weight of C7+oil components(MWC7+),mole fraction of volatile oil components(xvol),mole fraction of C2-C4 oil components(xC2-C4),mole fraction of C5-C6 oil components(xCs-5-C6),and the gas stream mole fractions of CO2(yCO2),H2S(yH2S),C1(yC1),hydrocarbons(yHC)and N2(yN2).The accuracy of the improved correlation was evaluated against experimental data reported in literature concurrently with those estimated by several renowned *** was found that the improved correlation provided higher prediction accuracy and consistency with literature experimental data than other literature *** addition,the predictive capability of the improved correlation was further validated by predicting an experimentally measured CO2-Oil MMP data,and it showed an accurate result with the absolute deviation of 4.15%.Besides,the differential analysis of the improved correlation was analyzed to estimate the impact of parameters uncertainty in the original MMP data on the calculated ***,sensitivity analysis was performed to analyze the influence of each parameter on MMP qualitatively and *** results revealed that the increase of xC2-C4,xC5-C6 and yH2 S lead to the decrease of MMP,while the increase of TR,MWC7+,xvol,yCO2,YC1,yHC and yN2 tend to increase the ***,the relevance of each parameter with MMP follows the order of TR xC5-C6 MWC7+ xvol yH2 S yHC yCO2yC1yN2xC2-C4.