The estimation of CO2 storage potential of a gas-bearing shale succession at the early stage of reservoir characterization: a case study from the Baltic Basin (Poland)

Shale Electrokinetic Property and Colloidal Stability: Potential for Subsurface CO2 Storage

“…Most studies in the literature on the usage of shale reservoirs have recently been on storage via CO 2 adsorption in organic matter and how shale could function as an efficient caprock to inhibit the upward migration of injected gases. ,,, Less consideration is given, nevertheless, to the electrokinetic characteristics of shale and how they govern how shale samples interact with liquids or gases like CO 2 . The shale sample under examination is negatively charged and colloidally unstable in both freshwater and SW environments according to the findings of our studies.…”

“…More so, the literature , is rich with information on the adsorption of CO 2 in shale systems, enhanced gas recovery (EGR) from shale reservoirs, and the effect of organic matter on CO 2 adsorption, etc. Furthermore, literature on shale gas potential storage, ,, its ability to serve as a seal in bulk CO 2 storage, and enhanced gas recovery using CO 2 exists, but less attention is paid to the shale itself other than its physical properties, total organic content (TOC) and pore network.…”