ANALYSIS AND DESIGN OF CO 2-ACETONE MIXTURE INJECTION FOR LIGHT OIL EXTRACTION PROCESSES BACHELOR THESIS Alfanda Kurnia Widi 12216060 submitted as partial fulfillment of the requirements for the degree of BACHELOR OF ENGINEERING in Petroleum Engineering Study Program PETROLEUM ENGINEERING STUDY PROGRAM FACULTY OF MINING AND PETROLEUM ENGINEERING INSTITUT TEKNOLOGI BANDUNG 2020 ANALYSIS AND DESIGN OF CO 2-ACETONE MIXTURE INJECTION FOR LIGHT OIL EXTRACTION PROCESSES BACHELOR THESIS Alfanda Kurnia Widi 12216060 submitted as partial fulfillment of the requirements for the degree of BACHELOR OF ENGINEERING in Petroleum Engineering Study Program Approved by: Thesis Adviser, ………………………… Prof. Ir. Asep Kurnia Permadi, M.Sc., Ph.D. NIP 19631112 199001 1 001 Bandung, 19 Agustus 2020 1 ANALYSIS AND DESIGN OF CO 2-ACETONE MIXTURE INJECTION FOR LIGHT OIL EXTRACTION PROCESSES Alfanda Kurnia Widi* and Asep Kurnia Permadi** Copyright 2020, Institut Teknologi Bandung Abstract With increasing energy demands and insignificant addition of oil reserve, CO 2 EOR is able to answer the challenges by increasing 15-20 % more oil recovery. However, oil reservoirs in Indonesia are classified into high temperature reservoirs that cause high CO 2-oil MMP. As a result, CO2 miscible flooding implementation becomes difficult. Altering composition of CO 2 by co-solvent addition in certain concentration is one of the solutions. By this study, there are two objectives. They are identifying effect of acetone as co-solvent for CO 2 in extracting crude oil through comparative study and performing sensitivity study to find the most favorable acetone concentration for reducing MMP. Comparative study, used gas chromatography results, had been performed by comparing results from three cases (without extraction, CO 2 extraction, and CO2-acetone mixture extraction) and then analyzing those effects in crude oil. WINPROP, Computer Modelling Group software, was used for building M-Fluid phase behaviour and determining CO 2-oil MMP through sensitivity study. It was performed by taking five different acetone concentrations (0 %, 2.5 %, 5 %, 7.5 %, and 10 %) to be determined their MMP value. From comparative study, acetone assists CO 2 in extracting polar, heavy, and straight chain hydrocarbons because solvent extraction is based on “like dissolves like” or it can be said that polar compounds are soluble in polar solvent and vice versa. Acetone, a compound which is classified as non associative polar compound, is more soluble in CO 2 than other polar co-solvents. So, it assists to reduce CO2-oil MMP.