39f350ce-7ef2-d48b-e063-3050940a3955 English dataset British Geological Survey +44 115 936 3100 Environmental Science Centre, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-05-06 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13608437 OSGB 1936 / British National Grid (EPSG::27700) Thermal conductivity data on core samples from selected boreholes from UK sites 2025 2025-07-11 creation http://data.bgs.ac.uk/id/dataHolding/13608437 This data set consists of thermal property testing results including thermal conductivity, thermal diffusivity, porosity, permeability and density. The data is presented in an excel spreadsheet with two tabs, one containing the data itself and one containing a description of each column. The testing was carried out on behalf of the BGS Geothermal and energy storage programs between 2020 and 2025. The samples were predominantly plugs (24x38mm) or wedges (usually quarter core of various lengths) taken from borehole core. The following boreholes were sampled as part of the project. • UKGEOS CHESHIRE A-101 • Frodsham Marsh • Stanlow • Killingholme DG1 • Speke Reservoir • Carnaby • UKGEOS GGC01 • KEYWORTH D (GSHP 3) • SUTTON BONINGTON SB4 These sites were chosen to support characterisation activities around BGS projects such as the UK GeoEnergy Observatories project and the drilling of a ground source heat well on site at BGS Keyworth. Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk distributor Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk pointOfContact unknown https://resources.bgs.ac.uk/images/geonetworkThumbs/39f350ce-7ef2-d48b-e063-3050940a3955.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Mudstone Porosity Sandstone Permeability Density Thermal conductivity BGS Thesaurus of Geosciences 2022 revision UKGEOS UK Location (INSPIRE) NGDC Deposited Data Citable Data dataCentre NERC_DDC otherRestrictions licenceOGL Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]" otherRestrictions 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. Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]" vector English geoscientificInformation ISO 3166_1 alpha-3 2009 revision GB British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation UK [id=139300] ISO 3166_2 2009 revision UKM -4.0437 -0.1615 52.8217 55.8456 2020-01-01 2025-05-31 Microsoft Excel witheld Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk distributor https://doi.org/10.5285/06f90e3b-4587-4bd2-bf6f-86c44f664846 WWW:LINK-1.0-http--related Citation Information - Digital Object Identifier (DOI) BGS Thermal Conductivity Lab. (2025). Thermal conductivity data on core samples from selected boreholes from UK sites 2025. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/06f90e3b-4587-4bd2-bf6f-86c44f664846 information https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item188981 WWW:DOWNLOAD-1.0-http--download Thermal conductivity data on core samples from selected boreholes from UK sites 2025 This data set consists of thermal property testing results including thermal conductivity, thermal diffusivity, porosity, permeability and density. The data is presented in an excel spreadsheet with two tabs, one containing the data itself and one containing a description of each column. The testing was carried out on behalf of the BGS Geothermal and energy storage programs between 2020 and 2025. The samples were predominantly plugs (24x38mm) or wedges (usually quarter core of various lengths) taken from borehole core. download dataset dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 publication See the referenced specification false 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 2010-12-08 publication See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false The samples, predominantly plugs or wedges taken from borehole core, were tested in the following conditions; Air dry – the samples were left to dry naturally at room temperature. Fully vacuum resaturated - the samples were prepared by saturation with deaired deionised water using a vacuum chamber. The saturated samples remained under vacuum overnight as a minimum and then remained in deaired deionised water until tested. Oven dry – the samples were dried in an oven at 105°C for a minimum of 24 hours. Fresh, natural moisture content – the samples were removed soon after the core was extracted from the ground and were wrapped to ensure they retained natural moisture content until they were tested. 1. Thermal conductivity - the samples were tested using the following techniques; Modified Transient Plane Source (MTPS) – this is a sensor used with the C-therm Trident Conductivity Analyzer. The sample is placed on top of the sensor and a weight is placed on top to ensure good contact. The sensor contains a coil through which it induces a current and uses the change in voltage as a proxy for movement of heat through the sample (see Trident Thermal Conductivity Instrument – C-Therm Technologies Ltd. for more detail). The sensor requires a contact agent to sit between the sample and the sensor, for fully saturated and fresh samples this is water, for dry samples this is thermal grease as noted in the dataset. High resolution optical scanning High-precision non-contact measurement that optically scans the sample’s surface with a focused, mobile and continuously operated heat source in combination with two infrared temperature sensors. After warming up the instrument, the sensors were calibrated with a reference sample. The measurements were made on a 2 cm wide black mark made on the plane surface of each sample. All the measurements were repeated three times from which mean values were calculated.” 2. Porosity and permeability Porosity and permeability values were obtained for some samples. A standard liquid resaturation method was used to determine effective porosity, bulk density and grain density (Bloomfield et al. 1995). Gas permeability was determined using nitrogen under steady state conditions and an equivalent liquid permeability calculated on the basis of a previous empirical correlation (Bloomfield and Williams 1995). Probe permeametry was performed using nitrogen as the permeant under steady state flow conditions and assuming radial flow geometry. Details of each of the methods are given in the methodology document Wallingford Poroperm methodology Peter Williams Where grain size is referred to in the data, this is based on the BGS RCS modified Wentworth scheme, see https://webapps.bgs.ac.uk/data/vocabularies/dictionary.cfm?name=DIC_GRAIN_SIZE_BGS