Modelling Long Term CO2 Storage in Saline Aquifers

Abstract

Deep saline aquifers provide a large storage for CO2. To ensure for long timescale storage, CO2 is usually injected into the saline aquifers. It is important to understand how a storage will behave based on the injection rate of the CO2, such as knowledge of the gas migration pattern, saturation pattern among others. Selection of simulation tools usually depends partly on software capabilities. In this work, three computational applications (Eclipse 300, CO2STORE module, and Front Sim) were used with flow simulation of a ten year period at an injection rate of over 140,000 sm3 /day. A recommendation is made of the application suitable for an oil field with likelihood of large pressure variation, gas breakout, hysteresis and imbibition.