New Proposals for Supercritical Fluids Applications

Deep fluids and their role in hydrocarbon migration and oil deposit formation exemplified by supercritical СO2

“…Due to the high dissolving capacity of supercritical media, the introduction of deep fluid into the reservoir rock will be accompanied by the absorption or dissolution of water contained in the pores of the rock. This is because supercritical СО 2 is capable of dissolving both water and hydrocarbons (Lifshits & Chalaya 2010; Rzoska & Rzoska 2010; Lifshits et al . 2012; Makaryan et al .…”

“…The conditions (temperature and pressure) for the pass to the supercritical state of CO 2 (tcrit 31.0 °C and Pcrit 72.9 atm) and methane (tcrit 82.4 °C and Pcrit 46.9 atm) are achievable under the ‘oil window’ (temperature 110 ± 45 °C, depth 1.5 ÷ 3.5 km). Other components of deep fluids, water, or hydrogen can easily dissolve in a supercritical medium, thus acquiring high chemical activity (Rzoska & Rzoska 2010; Makaryan et al . 2020).…”