ESTIMASI KAPASITAS PENYIMPANAN CO2 PADA LAPANGAN X DENGAN MENGGUNAKAN SIMULATOR KONVENSIONAL

• Main Author: Maududi Ismail Sidik, Raihan
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/54704
• Institution: Institut Teknologi Bandung

Carbon Capture Storage can be considered as one of solution to reduce Carbon Dioxide emission which can cause Green House Effect. CCS consists of gathering and compression, transporting, and saving CO2 in underground storage. The processes must be conducted safely. Preliminary study must be held to know technical uncertainty and possibility will be caused by event. Field X is pilot project of Carbon Capture Storage in Indonesia. This study purpose is to estimate CO2 capacity that can be injected to reservoir without causing fracture and leak through fault. Based on Leak of Test (LOT) data, fracture pressure gradient can be predicted and considered as safety standard. There are two injection scenarios, constant injection rate and constant bottom hole pressure, to predict CO2 capacity storage. CO2 gas is injected by constant injection rate for seven cases (570, 1140, 1710, 3420,4560,5700,6840 MSCFD) and injected by constant bottom hole pressure for each well. The bottom hole pressure value is obtained by subtracting fracture pressure each well with 150 psi to prevent fracture. Optimum well number has been analyzed and get 8 wells. Conventional simulation includes geomechanics parameters (Rock Density, Poisson’s Ratio, Modulus Young, and Biot’s Constant). Trapping Mechanism in this study are Solubility Trapping and Residual Trapping. Based on simulation using constant injection rate, the safest injection rate without causing fracture and no CO2 reach the fault in reservoir is 3420 MSCFD for each well and resulting 5.5 million ton of CO2 injected in 10 years. Simulating with bottom hole constant gives about 9.9 million ton of CO2 in 10 years injection without causing fracture. But CO2 reach fault after 20 years