A systematic capacity assessment and classification of geologic CO2 storage systems in India

Impact of Supercritical CO2 on Shale Reservoirs and Its Implication for CO2 Sequestration

“…27,125 In fact, the enhanced recovery of CH 4 and simultaneous sequestration of CO 2 is seen as the first step for CCS to ease the financial burden with CO 2 capturing and handling. 11,126 The fact that CO 2 displaces CH 4 and is adsorbed by shale pores is similar to the process that operates in coal bed methane systems, and has been proved by both experimental studies and numerical simulations. 124,127−129 In addition to displacing the adsorbed CH 4 from porous structures within the shale reservoirs, pre-existing fractures and created fracture networks also provide additional sites for CO 2 adsorption.…”

“…As already mentioned, one of the advantages of using SC-CO 2 for fracturing shale petroleum systems is the possibility of permanently sequestrating CO 2 in deep shale reservoirs. When injected, CO 2 is preferentially adsorbed over the preadsorbed CH 4 , as both mineral matter and organic matter within shales show more affinity toward CO 2 than CH 4 . , In fact, the enhanced recovery of CH 4 and simultaneous sequestration of CO 2 is seen as the first step for CCS to ease the financial burden with CO 2 capturing and handling. , The fact that CO 2 displaces CH 4 and is adsorbed by shale pores is similar to the process that operates in coal bed methane systems, and has been proved by both experimental studies and numerical simulations. ,− In addition to displacing the adsorbed CH 4 from porous structures within the shale reservoirs, pre-existing fractures and created fracture networks also provide additional sites for CO 2 adsorption …”

“…It is self-explanatory that, for the progress of civilization, utilization of available energy resources cannot be terminated, and to accommodate this with the PCA objective, negative GHG emissions is to be achieved in the coming decades. − Luderer et al estimated that, even after phenomenal efforts by several countries, the fossil fuel contribution to emission until the end of century would remain ∼1000 Gt CO 2 . In this context, carbon capture and storage (CCS) in geological reservoirs has been identified as a feasible near-term option to combat the rising GHG emissions. ,− …”

Filter Cake Removal during the Cementing and Completion Stages in CO2 Storage Wells: Current Developments, Challenges, and Prospects

“…[4,5] In 2015, more than 190 countries signed the Paris Climate Agreement (PCA), which aims to limit global temperature rise to 2 °C above preindustrial levels and strive to stay below 1.5 °C. [6] Fossil fuels currently account for more than 80% of the world's primary energy consumption, and global energy demand is projected to be 40% higher in 2035 compared to 2010. [7] Such dependence will continue to add carbon emissions into the atmosphere.…”

Numerical Simulation Analysis of Carbon Dioxide Storage During Cyclic Steam Stimulation in Heavy Oil Reservoir

“…The CCS technology was first evolved by American oil companies using CO2 to drive oil to improve oil recovery in the 1970s. After more than 50 years of development, CCS technology has gradually developed into a key measure to curb greenhouse gas emissions [1] . CCS includes three links: CO2 capture, transportation and storage, that is, first separate and capture CO2, then select transportation tools to send to appropriate storage sites, and finally use or inject underground, oil (gas) displacement, mineralization and other permanent storage, followed by long-term monitoring and management [2] .…”