| Title | Investigation for CO2 adsorption and wettability of reservoir rocks |
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| Author | Wang, J ; Samara,
H; Jaeger, P; Ko, V; Rodgers, D; Ryan, D |
| Source | Energy & Fuels vol. 36, 2022 p. 1626-1634, https://doi.org/10.1021/acs.energyfuels.1c03366 |
| Image |  |
| Year | 2022 |
| Alt Series | Natural Resources Canada, Contribution Series 20210683 |
| Publisher | American Chemical Society |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Canada; Canada; British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon;
Nunavut |
| NTS | 1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65;
66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560 |
| Subjects | fossil fuels; general geology; carbon dioxide; underground gas storage; gas storage; reservoirs; pore pressures |
| Illustrations | photographs; photomicrographs; schematic diagrams; plots |
| Program | Clean Fossil Fuels |
| Released | 2022 01 19 |
| Abstract | CO2 adsorption under pressure and temperature conditions for geological storage of CO2 is evaluated for two non-shale reservoirs in Canada. One is the Weyburn carbonate reservoir, where the world's
largest CO2 storage project is carrying on, and the other is a tight sandstone reservoir. Wettability of reservoir rock under high-pressure CO2 is also evaluated. Rocks from both reservoirs show a significant mass increase as a result of CO2
adsorption but distinctly different behaviors. A method for estimating the density of the adsorbed CO2 phase from gravimetric adsorption data is developed, and the result is in fair agreement with the expectation from analogy of adsorption with
liquid condensation. A formula is proposed to predict CO2 storage capacity of reservoir rocks based on directly measured adsorption data. It is shown that CO2 adsorption could substantially increase the storage capacity and decrease leaking potential
by decreasing overpressure to the reservoir caprock. Nearly 30 and 40% more CO2 could be stored by adsorption in the carbonate and tight sandstone rocks, respectively. Rock wettability reflected by the water contact angle suggests that CO2 could
enter small rock pores to increase adsorption and utilization of reservoir capacity. The results can contribute to the evaluation of the impact of adsorption on CO2 storage. |
| Summary | (Plain Language Summary, not published)
CO2 adsorption on rocks has been evaluated for two Canadian reservoirs. The results show that adsorption can play an important role in geological storage
of CO2, in terms of increasing storage capacity and reducing overpressure. It is also shown that CO2 can change the wettability of the rocks and improve reservoir utilization. This investigation is the first kind in CO2 storage. |
| GEOSCAN ID | 329679 |
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