Heat transport and pressure buildup during carbon dioxide injection into depleted gas reservoirs (2014)
Journal Article
Mathias, S., McElwaine, J., & Gluyas, J. (2014). Heat transport and pressure buildup during carbon dioxide injection into depleted gas reservoirs. Journal of Fluid Mechanics, 756, 89-109. https://doi.org/10.1017/jfm.2014.348

In this article, a two-layer vertical equilibrium model for the injection of carbon dioxide into a low-pressure porous reservoir containing methane and water is developed. The dependent variables solved for include pressure, temperature and $\def \xm... Read More about Heat transport and pressure buildup during carbon dioxide injection into depleted gas reservoirs.

Dynamic modelling of a UK North Sea saline formation for CO2 sequestration (2014)
Journal Article
Watson, F., Mathias, S., Daniels, S., Jones, R., Davies, R., Hedley, B., & van Hunen, J. (2014). Dynamic modelling of a UK North Sea saline formation for CO2 sequestration. Petroleum Geoscience, 20(2), 169-185. https://doi.org/10.1144/petgeo2012-072

Preliminary dynamic modelling, using TOUGH2/ECO2N, has been carried out to assess the suitability of a site in the UK North Sea for sequestering CO2. The potential storage site is a previously unused saline formation within the Permian Rotliegend san... Read More about Dynamic modelling of a UK North Sea saline formation for CO2 sequestration.

Uncertainty in static CO2 storage capacity estimates: Case study from the North Sea, UK (2013)
Journal Article
Hedley, B., Davies, R., Mathias, S., Hanstock, D., & Gluyas, J. (2013). Uncertainty in static CO2 storage capacity estimates: Case study from the North Sea, UK. Greenhouse Gases: Science and Technology, 3(3), 212-230. https://doi.org/10.1002/ghg.1343

A statistical analysis of well production rates from UK oil and gas fields – Implications for carbon capture and storage (2013)
Journal Article
Mathias, S., Gluyas, J., Mackay, E., & Goldthorpe, W. (2013). A statistical analysis of well production rates from UK oil and gas fields – Implications for carbon capture and storage. International Journal of Greenhouse Gas Control, 19, 510-518. https://doi.org/10.1016/j.ijggc.2013.10.012

The number of wells required to dispose of global CO2 emissions by injection into geological formations is of interest as a key indicator of feasible deployment rate, scale and cost. Estimates have largely been driven by forecasts of sustainable inje... Read More about A statistical analysis of well production rates from UK oil and gas fields – Implications for carbon capture and storage.

On the importance of relative permeability data for estimating CO2 injectivity in brine aquifers (2013)
Journal Article
Mathias, S., Gluyas, J., González Martínez de Miguel, G., Bryant, S., & Wilson, D. (2013). On the importance of relative permeability data for estimating CO2 injectivity in brine aquifers. International Journal of Greenhouse Gas Control, 12, 200-212. https://doi.org/10.1016/j.ijggc.2012.09.017

Performance assessment of possible CO2 storage schemes is often investigated through numerical simulation of the CO2 injection process. An important criterion of interest is the maximum sustainable injection rate. Relevant numerical models generally... Read More about On the importance of relative permeability data for estimating CO2 injectivity in brine aquifers.

Dissolution of CO2 from leaking fractures in saline formations (2012)
Journal Article
Watson, F., Mathias, S., van Hunen, J., Daniels, S., & Jones, R. (2012). Dissolution of CO2 from leaking fractures in saline formations. Transport in Porous Media, 94, 729-745. https://doi.org/10.1007/s11242-012-0021-1

Modelling long-term diffuse nitrate pollution at the catchment-scale: Data, parameter and epistemic uncertainty. (2011)
Journal Article
Howden, N., Burt, T., Mathias, S., Worrall, F., & Whelan, M. (2011). Modelling long-term diffuse nitrate pollution at the catchment-scale: Data, parameter and epistemic uncertainty. Journal of Hydrology, 403(3-4), 337-351. https://doi.org/10.1016/j.jhydrol.2011.04.012

Role of partial miscibility on pressure buildup due to constant rate injection of CO2 into closed and open brine aquifers (2011)
Journal Article
Mathias, S., Gluyas, J., González Martínez de Miguel, G., & Hosseini, S. (2011). Role of partial miscibility on pressure buildup due to constant rate injection of CO2 into closed and open brine aquifers. Water Resources Research, 47(12), Article W12525. https://doi.org/10.1029/2011wr011051

[1] This work extends an existing analytical solution for pressure buildup because of CO2 injection in brine aquifers by incorporating effects associated with partial miscibility. These include evaporation of water into the CO2 rich phase and dissolu... Read More about Role of partial miscibility on pressure buildup due to constant rate injection of CO2 into closed and open brine aquifers.

Analytical solution for Joule-Thomson cooling during CO2 geosequestration in depleted oil and gas reservoirs (2010)
Journal Article
Mathias, S., Gluyas, J., Oldenburg, C., & Tsang, C. (2010). Analytical solution for Joule-Thomson cooling during CO2 geosequestration in depleted oil and gas reservoirs. International Journal of Greenhouse Gas Control, 4(5), 806-810. https://doi.org/10.1016/j.ijggc.2010.05.008

Mathematical tools are needed to screen out sites where Joule–Thomson cooling is a prohibitive factor for CO2 geo-sequestration and to design approaches to mitigate the effect. In this paper, a simple analytical solution is developed by invoking stea... Read More about Analytical solution for Joule-Thomson cooling during CO2 geosequestration in depleted oil and gas reservoirs.