Legacy BGS geothermal models: theoretical potential 'heat-in-place' for the early Carboniferous limestone (hot sedimentary aquifer resources) in northern and southern England

This raster dataset shows the modelled P50 distribution of the theoretical potential 'heat-in-place' (HIP) across the northern and southern early Carboniferous limestone in Great Britain (PJ/km2), at a resolution of 2500 m x 2500 m. The HIP is calculated for resource temperatures greater than 50°C, which represents the minimum temperature required for direct use of heat from hot sedimentary aquifer resources. The HIP characterises the heat resource available in an aquifer according to the USGS definition described in e.g. Muffler and Cataldi (1978). Its calculation is part of the research published by D J.R. Jones, T. Randles, T. Kearsey, T.C. Pharaoh, A. Newell (2023). https://doi.org/10.1016/j.geothermics.2023.102649. Areas of high uncertainty are delineated in the published paper.

Date (Publication): 2023

Citation identifier: http://data.bgs.ac.uk/id/dataHolding/13608361

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	enquiries@bgs.ac.uk	Distributor
British Geological Survey	Enquiries	enquiries@bgs.ac.uk	Point of contact

Maintenance and update frequency: Not planned

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

UK Location (INSPIRE)
Aquifers
Geothermal maps
Geothermal energy
Limestone
Carboniferous

dataCentre

UK Location (INSPIRE)

Keywords

NERC_DDC

Access constraints: Other restrictions

Other constraints: no limitations

Other constraints: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Use constraints: Other restrictions

Other constraints: The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Other constraints: Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Other constraints: The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section ( iprdigital@bgs.ac.uk) if further advice is required with regard to permitted usage.

Spatial representation type: Grid

Distance: 2500 urn:ogc:def:uom:EPSG::9001

Language: English

Topic category

Geoscientific information

Geographic identifier: NORTHERN ENGLAND [id=151000]
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation

Geographic identifier: SOUTHERN ENGLAND [id=158800]
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation

Begin date: 2022

End date: 2025

Unique resource identifier: OSGB 1936 / British National Grid (EPSG::27700)

Distribution format

Name	Version

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	enquiries@bgs.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://ukgtp.bgs.ac.uk	UK Geothermal Platform Web Map

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://ukgeothermalplatform.org	UK Geothermal Platform

Hierarchy level: Dataset

Other: dataset

Conformance result

Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication): 2010-12-08

Explanation: See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Pass: No

Statement: The study was conducted to assess the theoretical potential of the geothermal resource from the early Carboniferous limestone (ECL) in Great Britain. The theoretical potential 'heat-in-place' was calculated using the 3DHIP tool (Piris et al., 2021), which is based on the USGS volumetric 'heat-in-place' method developed by Muffler and Cataldi (1978). The method uses a Monte Carlo simulation to calculate the P50 probability distribution function for the HIP using the P50 distribution of reservoir volume and rock density derived from the 3D geological models of the ECL lithofacies for each study area, gridded at an XYZ spatial resolution of 2500 × 2500 × 50 m, and the temperature distribution. The model assumes a triangular porosity distribution, a constant fluid density (1040 kg/m3), fluid specific heat capacity (3.8 kJ/kg°C), and rock specific heat capacity (0.86 kJ/kg°C) and a reference/reinjection temperature of 21°C. Geothermal gradient and mean surface temperature were defined as constants for each model. An upper depth cut-off of 1000 m and 1200 m was applied to northern and southern models respectively, which corresponds to a reservoir temperature of 50°C and is judged to be the minimum temperature required for direct-use applications of geothermal energy. The heat-in-place is highly sensitive to the thickness, which is influenced by the depth to the top (well constrained by seismic interpretation and well picks) and base (less/no well coverage and poor constrained in some areas) of the base Carboniferous.