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Thermal and Economic Analysis of Heat Exchangers as Part of a Geothermal District Heating Scheme in the Cheshire Basin, UK (2022)
Journal Article
Brown, C. S., Cassidy, N. J., Egan, S. S., & Griffiths, D. (2022). Thermal and Economic Analysis of Heat Exchangers as Part of a Geothermal District Heating Scheme in the Cheshire Basin, UK. Energies, 15(6), https://doi.org/10.3390/en15061983

Heat exchangers are vital to any geothermal system looking to use direct heat supplied via a district heat network. Attention on geothermal schemes in the UK has been growing, with minimal attention on the performance of heat exchangers. In this stud... Read More about Thermal and Economic Analysis of Heat Exchangers as Part of a Geothermal District Heating Scheme in the Cheshire Basin, UK.

A sensitivity analysis of a single extraction well from deep geothermal aquifers in the Cheshire Basin, UK (2022)
Journal Article
Cassidy, N. J., Egan, S. S., Griffiths, D., & Brown, C. S. (2022). A sensitivity analysis of a single extraction well from deep geothermal aquifers in the Cheshire Basin, UK. Quarterly Journal of Engineering Geology and Hydrogeology, 55(3), Article qjegh2021-131. https://doi.org/10.1144/qjegh2021-131

Deep hot sedimentary aquifers (HSAs) are targeted for geothermal exploitation in the Cheshire Basin, UK. In this study, a single extraction well targeting the Collyhurst Sandstone Formation was modelled on MATLAB coupling heat and fluid flux. The Col... Read More about A sensitivity analysis of a single extraction well from deep geothermal aquifers in the Cheshire Basin, UK.

‘Block and basin’ style rift basins: sedimentological insights from the Mississippian Fell Sandstone Formation (2021)
Journal Article
Howell, L. P., Priddy, C., Mitten, A. J., Jeffery, A. J., Egan, S. S., Leslie, G., …Kearsey, T. I. (2021). ‘Block and basin’ style rift basins: sedimentological insights from the Mississippian Fell Sandstone Formation. Journal of the Geological Society, 179(4), jgs2021 - 083. https://doi.org/10.1144/jgs2021-083

The block and basin tectonostratigraphic framework for the northern Pennine (rift) Basin, within which buoyant granite intrusions core intra-basin fault-bounded blocks, has long held traction. However, many of the elements of this framework are roote... Read More about ‘Block and basin’ style rift basins: sedimentological insights from the Mississippian Fell Sandstone Formation.

Numerical modelling of deep coaxial borehole heat exchangers in the Cheshire Basin, UK (2021)
Journal Article
Brown, C., Cassidy, N., Egan, S., & Griffiths, D. (2021). Numerical modelling of deep coaxial borehole heat exchangers in the Cheshire Basin, UK. Computers and Geosciences, 104752 - 104752. https://doi.org/10.1016/j.cageo.2021.104752

Few deep geothermal wells have been drilled in the Cheshire Basin resulting in high geological and financial risks of such developments. In recent years the focus of exploiting deep geothermal resources in the UK has moved towards lower risk strategi... Read More about Numerical modelling of deep coaxial borehole heat exchangers in the Cheshire Basin, UK.

Deep geothermal energy in northern England: Insights from 3D finite difference temperature modelling (2021)
Journal Article
Howell, L., Brown, C., & Egan, S. (2021). Deep geothermal energy in northern England: Insights from 3D finite difference temperature modelling. Computers and Geosciences, 104661 - 104661. https://doi.org/10.1016/j.cageo.2020.104661

Many of the most widely used deep geothermal resource maps for the UK are produced by contouring around sparsely distributed and often unreliable data points. We thus present a MATLAB-based 3D finite difference temperature modelling methodology, whic... Read More about Deep geothermal energy in northern England: Insights from 3D finite difference temperature modelling.

Seismic and borehole-based mapping of the late Carboniferous succession in the Canonbie Coalfield, SW Scotland: evidence for a ‘broken’ Variscan foreland? (2020)
Journal Article
Howell, L., Besly, B., Sooriyathasan, S., Egan, S., & Leslie, G. (2020). Seismic and borehole-based mapping of the late Carboniferous succession in the Canonbie Coalfield, SW Scotland: evidence for a ‘broken’ Variscan foreland?. Scottish Journal of Geology, https://doi.org/10.1144/sjg2020-007

Local seismic and borehole-based mapping of the Carboniferous Pennine Coal Measures and Warwickshire Group successions in the Canonbie Coalfield (SW Scotland) provides evidence of repeated episodes of positive inversion, syn-depositional folding and... Read More about Seismic and borehole-based mapping of the late Carboniferous succession in the Canonbie Coalfield, SW Scotland: evidence for a ‘broken’ Variscan foreland?.

The influence of low-density granite bodies on extensional basins (2020)
Journal Article
Howell, L., Leslie, G., Clarke, S., Mitten, A., Pringle, J., & Egan, S. (2020). The influence of low-density granite bodies on extensional basins. Geology Today, https://doi.org/10.1111/gto.12297

The Carboniferous North Pennine Basin remains the type locality for the ‘block and basin’ tectonic framework model. It has been widely believed that during periods of tectonic extension, large low-density bodies within the basement permit buoyant blo... Read More about The influence of low-density granite bodies on extensional basins.

Evaluating the Response of Geothermal Reservoirs in the Cheshire Basin: A Parameter Sensitivity Analysis (2019)
Presentation / Conference
Griffiths, D., Cassidy, N., Egan, S., & Brown, C. (2019, May). Evaluating the Response of Geothermal Reservoirs in the Cheshire Basin: A Parameter Sensitivity Analysis. Presented at 2019 AAPG Annual Convention and Exhibition, San Antonio, Texas

Deep geothermal reservoirs (>2 km) from both low- to medium-enthalpy resources are considered as an alternative energy source to fossil fuels in the UK. Geothermal energy can be explored using existing technology from the oil industry and, unlike oth... Read More about Evaluating the Response of Geothermal Reservoirs in the Cheshire Basin: A Parameter Sensitivity Analysis.

Structural and geodynamic modelling of the influence of granite bodies during lithospheric extension: application to the Carboniferous basins of northern England (2019)
Journal Article
Howell, L., Egan, S., Leslie, G., & Clarke, S. (2019). Structural and geodynamic modelling of the influence of granite bodies during lithospheric extension: application to the Carboniferous basins of northern England. Tectonophysics, 47-63. https://doi.org/10.1016/j.tecto.2019.02.008

Intra-basinal highs within classic ‘block and basin’ style tectonic frameworks are underpinned by large granite bodies. This is widely believed to relate to the relative ‘rigidity’ and ‘buoyancy’ of granite in relation to accommodating basement. It h... Read More about Structural and geodynamic modelling of the influence of granite bodies during lithospheric extension: application to the Carboniferous basins of northern England.

Tracking Sustainability Concepts in Geology and Earth Science Teaching and Learning, Keele University, UK (2018)
Journal Article
Rogers, S., Egan, S., & Stimpson, I. (2018). Tracking Sustainability Concepts in Geology and Earth Science Teaching and Learning, Keele University, UK. The Journal of Academic Development and Education, https://doi.org/10.21252/KEELE-0000028

Sustainability of the planet is fundamental to our common future, and geologists and geoscientists are key stakeholders in this process. Better understanding of the Earth, its processes and utilisation of its resources, through successful science com... Read More about Tracking Sustainability Concepts in Geology and Earth Science Teaching and Learning, Keele University, UK.

Geophysical surveys to help map buried igneous intrusions, Snowdonia, North Wales, UK (2015)
Journal Article
Moseley, D., Pringle, J., Haslam, R., Egan, S., Rogers, S., Gertisser, R., …Stimpson, I. (2015). Geophysical surveys to help map buried igneous intrusions, Snowdonia, North Wales, UK. Geology Today, 109 -115 (6). https://doi.org/10.1111/gto.12096

The geology of the Snowdonia National Park in North Wales comprises a mixture of Lower Palaeozoic shallow marine sediments, acidic igneous rocks and basic intrusions of the Welsh Basin that were subsequently deformed during the Caledonian Orogeny. Th... Read More about Geophysical surveys to help map buried igneous intrusions, Snowdonia, North Wales, UK.

Modelling low-enthalpy deep geothermal reservoirs in the Cheshire Basin,UK as a future renewable energy source.
Journal Article
Brown, C., Griffiths, D., Egan, S., & Cassidy, N. Modelling low-enthalpy deep geothermal reservoirs in the Cheshire Basin,UK as a future renewable energy source

Geothermal energy is considered a potential replacement for fossil fuel due to the possibility of high energy yields, geographically wide-spread resources and the ability to deliver a constant, weather independent base load of heat. Deep, hydrotherma... Read More about Modelling low-enthalpy deep geothermal reservoirs in the Cheshire Basin,UK as a future renewable energy source..

Rheological, thermal and isostatic constraints on continental lithosphere extension and compression
Thesis
Egan, S. (1988). Rheological, thermal and isostatic constraints on continental lithosphere extension and compression

Deep seismic reflection data has shown the importance of low angle faults and detachments in continental extensional tectonics. A quantitative model of continental lithosphere extension is presented, incorporating geometric, thermal and isostatic com... Read More about Rheological, thermal and isostatic constraints on continental lithosphere extension and compression.

epurposing Britain’s Coal Measures: insights from seismic and borehole-based mapping, and geothermal modelling
Presentation / Conference
Egan. epurposing Britain’s Coal Measures: insights from seismic and borehole-based mapping, and geothermal modelling. Presented at EGU General Assembly 2020

<jats:p> &amp;lt;p&amp;gt;As a consequence of 19&amp;lt;sup&amp;gt;th&amp;lt;/sup&amp;gt; and 20&amp;lt;sup&amp;gt;th&amp;lt;/sup&amp;gt; century coal mining, a vast quantity of subsurface data has been accumulated on Britain&amp;amp;#8217;s late Car... Read More about epurposing Britain’s Coal Measures: insights from seismic and borehole-based mapping, and geothermal modelling.