One-Dimensional Analytical Solution for flow equations for CO2 Injection in the Presence of Multiple Impurities
Abstract:
The injected CO₂ stream often contains impurities that influence injectivity, well integrity, and plume behavior through complex interactions with in-situ fluids, including chromatographic partitioning as observed experimentally (Bachu and Benion, 2009) and numerically (Bachu et al., 2009).
While analytical solutions for impurity propagation are limited, Hosseini et al. (2012) provided a key study on CO₂–CH₄ systems using the method of characteristics (MOC) originally developed for gas injection theory (Orr, 2007).
Building on this, the current study extends the analysis to CO₂ streams with multiple impurities, integrating Yan et al.’s (2014) simplified approach for determining tie-lines with Orr’s semi-analytical 1D gas injection solution to generate representative saturation and composition profiles.