ENHANCED GAS RECOVERY SIMULATION STUDY: ADSORPTION OF CO 2 FOR SEQUESTRATION WHILE INCREASING THE HYDROCARBON RECOVERY BACHELOR THESIS RIFANI LUTFIYYA SULE 12218073 Submitted as partial fulfilment 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 2022 ENHANCED GAS RECOVERY SIMULATION STUDY: ADSORPTION OF CO 2 FOR SEQUESTRATION WHILE INCREASING THE HYDROCARBON RECOVERY BACHELOR THESIS RIFANI LUTFIYYA SULE 12218073 Submitted as partial fulfilment of the requirements for the degree of BACHELOR OF ENGINEERING in Petroleum Engineering study program Approved by: Thesis Adviser, Prof. Ir. Doddy Abdassah, M.Sc., Ph.D. NIP. 195205101978031001 Billal Maydika Aslam, S.T., M.T. NIP. 119110056 1 ENHANCED GAS RECOVERY SIMULATION STUDY: ADSORPTION OF CO 2 FOR SEQUESTRATION WHILE INCREASING THE HYDROCARBON RECOVERY Rifani Lutfiyya Sule*, Doddy Abdassah**, Billal Maydika Aslam*** and Dedy Irawan**** Copyright 2022, Institut Teknologi Bandung Abstract The effect of adsorption is generally not considered in CCUS (Carbon Capture Utilization and Storage) projects, especially related to Enhanced Gas Recovery (EGR). The reason is because the addition of adsorption parameter to the reservoir simulation data input will make the reservoir model more complex in terms of reservoir model properties. Moreover, the duration of running the reservoir simulation model will be much longer. This study showed the effect of adsorption during EGR, although it is implemented to a simple input model and simple reservoir parameters that are taken from published data. The size of the model is about 2,639.7 x 2,639.7 x 650 ft 3 , and the model is divided into regular grid sizes of 293.3 ft (for x and y directions) and varies depth sizes, namely 50 ft for the first two cells, 30 ft for the next two cells, and the rest cells are 25 ft. Therefore, the total depth is 650 ft (for z direction). Four (4) injection wells are situated on the edges of the model, with a CO 2 injection rate of 2.5 MMSCFD per day for each well. The production well is situated on the centre of the model. The simulation is started on 1 January 2022 and duration of the simulation is 228 years with a time interval variation of every month (2022 – 2025), every minute (only on 1 – 2 May 2025 in order to see the precise breakthrough time to the production well), and every year (implemented to the rest of simulation periods). The results of this study show the adsorption effect quite clearly, in which higher hydrocarbon gas production is obtained (due to EGR), whereas the production of CO 2 is smaller than if the simulation is not incorporated adsorption effect. Thus, the lack of CO 2 gas in the production well is caused by adsorption effects. In other word it could be said that the higher yield of hydrocarbon gas is caused by smaller CO 2 gas that is being produced due to adsorption, although smaller CH 4 is also adsorbed. It is believed that some of the injected CO 2 is adsorbed by the clay minerals in the reservoir. The ability of clay minerals to adsorb CO 2 and CH4 will differ depending on the level of purity of the clay.