Emerging advances in CO2 storativity and trappability within shale reservoirs

Abstract

Geological carbon storage and utilization is widely regarded as the most realistic method of reducing carbon emissions throughout the energy transition era. In recent times, the implementation of carbon dioxide (CO₂) injection has emerged as a potential method for increasing the recovery of hydrocarbon and facilitating the interaction of CO₂ in shale reservoirs. This methodology enables the mitigation of total carbon emissions released into the earth's atmosphere. The concept of using CO₂ geological sequestration in unconventional shale formations seems to be a prudent approach in responding to both the growing energy demand and mandating environmental requirements simultaneously. Shale reservoirs have received significant interest in the global context because to their substantial reserves and widespread distribution. This research offers a comprehensive analysis of the essential components involved in the sequestration of CO₂ in shales, therefore improving the trapping and long-term storage of CO₂. In addition, it explores the extraction of hydrocarbons in this context. Gaining a comprehensive understanding of the fundamental factors that contribute to the storativity and trappability of CO₂ is crucial for improving the displacement of methane gas (CH₄) during shale gas recovery. This is particularly relevant in depleted the reservoirs of shale gas, where the aim is to enhance the effectiveness of in situ CO₂ sequestration while reducing the leakage risk.