Uniqueness, repeatability analysis and comparative evaluation of experimentally determined MMPs

摘要: Abstract Miscible gas injection processes like CO2 flooding are recommended to be carried out at minimum miscibility pressure (MMP) for effective enhanced recovery of trapped oil. There several methods MMP determination, but slim tube and vanishing interfacial tension (VIT) deployed experimental techniques in this study. Uniqueness repeatability determined was tested by conducting 55 runs three different Omani crude oil samples (L-721, MZE N) using coil lengths constant diameter rates. VIT technique accuracy reliability evaluated comparing MMPs, same considered samples, with aforementioned systems MMPs. A trend decrease increase length found. No unique found between rate. Lowest highest were observed lowest It may attributed more stable displacement process which results earlier developed almost complete remaining retained Therefore, both design procedure need standardized. PVT software predicted close lower system sample L-721 higher measured MZE. approach MMPs lie the medium longer samples. Since estimated match liable can utilized as a reliable cheap alternative compared expensive time consuming accurate determination without any potential significant error.