Geochemical modeling of changes in caprock permeability caused by CO2–brine–rock interactions under the diffusion mechanism | Oil & Gas Science and Technology

Subsurface Fluid Injection and Energy Storage

Open Access

Table 6

Initial mineral volume fractions and possible secondary mineral phases used in the simulations [31].

Mineral classification	Mineral name	Chemical composition	Reservoirs (volume fraction)	Caprock (volume fraction)
Clay minerals	Illite	K_0.6Mg_0.25Al_1.8(Al_0.5Si_3.5O₁₀)(OH)₂	0.15	0.653
	Kaolinite	Al₂Si₂O₅(OH)	0.03	0.0111
	Smectite-Ca	Ca_0.145Mg_0.26Al_1.77Si_3.97O₁₀(OH)₂	0	0.0696
	Chlorite	Mg_2.5Fe_2.5Al₂Si₃O₁₀(OH)₈	0.10	0.064
Non-clay mineral	Quartz	SiO₂	0.35	0.08
	K-feldspar	KAlSi₃O₈	0.20	0.028
	Albite	NaAlSi₃O₈	0	0.032
	Anhydrite	CaSO₄	0	0.04
	Calcite	CaCO₃	0.10	0.008
	Pyrite	FeS₂	0	0.004
	Oligoclase	CaNa₄Al₆Si₁₄O₄₀	0.05	0
	Hematite	Fe₂O₃	0.005	0
	Siderite	FeCO₃	0	0
	Ankerite	CaMg_0.3Fe_0.7(CO₃)₂	0	0
	Dawsonite	NaAlCO₃(OH)₂	0	0
	Magnesite	MgCO₃	0	0
	Dolomite	CaMg(CO₃)₂	0	0
	Halite	NaCl	0	0

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.