#TITLE_ALTERNATIVE#

• Main Author: RIFQI SAFIRALDI (NIM : 12213092), PRAYUDHA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23704
• Institution: Institut Teknologi Bandung

KF offshore field is located in the Natuna waters territory. Reservoir of this field is lie on the three formation namely Arang, Keras, and Lower Gabus Formation. The type of reservoir rock is sandstone that contains light oil (52° API). 14 production wells was used to produced reservoir fluid since 1989. The peak production occurred in 1991 with oil peak about 42000 STBD and gas peak about 51 MMSCFD. In 1992, the gas re-injection project was started using 2 injection wells in order to prevent larger declining pressure. Until 2015, the cumulative oil production was 53.7 MMSTB and the cumulative gas production was 165.3 BSCF. Based on volumetric calculation, it is predicted that there is still 124.7 MMSTB remaining oil in place in the reservoir. <br /> <br /> <br /> <br /> The goal of this study is to simulate the oil production with immiscible CO2 flooding project for KF Field. There are some production wells that will be used as injection well with variated rate of injection. Initialization and history matching are conducted to validate the reservoir model. Injection of pure carbondioxide is variated from 5 – 40 MMSCFD for 12 years. It is resulting the increasing of oil recovery between 1.94 – 9.36% of OOIP. The highest recovery factor occurred by injecting 40 MMSCFD pure carbondioxide to the reservoir. It is also concluded that the increasing of injection rate will not always give increasing oil recovery significantly. In this case, the range of optimum injection rate is 22 – 25 MMSCFD.