c0f687e6-2217-1954-e054-002128a47908 English dataset British Geological Survey +44 115 936 3100 Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-05-24 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13607744 WGS 84 (EPSG::4326) Isotope compositions in a network of groundwater wells impaired by an underground blowout 2021-04-21 creation http://data.bgs.ac.uk/id/dataHolding/13607744 During the drilling of an exploration well in the 1960s, an underground blowout occurred near Sleen, The Netherlands. During approximately 25 months, near-continuous leakage of large amounts of natural gas was released into the subsurface. After the blowout, the local drinking water production company installed a network of groundwater monitoring wells to monitor for possible adverse effects on groundwater quality at the blowout site. Today, more than 50 years after the blowout, the groundwater is still impaired. Data has been correlated with previously published data by Schout et al. (2018) covering description of geology and well depths. During two fieldtrips (November 2019 & October 2020) water samples were collected from several wells covering: - Bulk gas compositions (methane, ethane, propane, oxygen, nitrogen, CO2, Argon). Bulk isotope compositions of methane (δ13C & δH), carbon dioxide (δ13C) and nitrogen (δ15N). - Methane clumped isotope compositions (ΔCD & ΔDD). - Inorganic parameters (hydrocarbons, anions, cations, DOC, alkalinity, nitrate and ammonium). The dataset was created within SECURe project (Subsurface Evaluation of CCS and Unconventional Risks) - https://www.securegeoenergy.eu/. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 764531. Jurgen Foeken TNO Postbus 80015, 3508 TA Utrecht not available originator Enquiries British Geological Survey United Kingdom not available distributor Enquiries British Geological Survey United Kingdom not available pointOfContact notApplicable https://resources.bgs.ac.uk/images/geonetworkThumbs/c0f687e6-2217-1954-e054-002128a47908.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Carbon dioxide Methane Isotopes BGS Thesaurus of Geosciences 2022 revision NGDC Deposited Data UKCCS 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]" textTable English geoscientificInformation British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation NETHERLANDS [id=202000] ISO 3166_1 alpha-2 2009 revision NL ISO 3166_1 alpha-3 2009 revision NLD 6.8400 6.8400 52.8000 52.8000 2019-10-29 2020-10-30 Microsoft Excel witheld Enquiries British Geological Survey United Kingdom not available distributor https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item164846 WWW:DOWNLOAD-1.0-http--download Data download https://doi.org/10.5285/2ecdbe4f-6fe2-4a10-8474-d7bc94d3b66c WWW:LINK-1.0-http--related Citation Information - Digital Object Identifier (DOI) Foeken, J., de Boer, C., Bech, T. (2022): Isotope compositions in a network of groundwater wells impaired by an underground blowout. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/2ecdbe4f-6fe2-4a10-8474-d7bc94d3b66c information 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 Analysis of trace metal and major cations was conducted with inductively coupled plasma mass spectrometry (ICP-MS). Large volume (>30L) groundwater samples with dissolved methane gas were collected in pressurised cannisters. In the laboratory, cannisters were depressurised for methane degassing from the water. Headspace methane gas was collected in all metal cannisters for methane clumped isotope analyses. Seperate, small volume (~200ml) gas & water samples were collected in Isoflasks for bulk methane isotope analyses and inorganic parameters. Natural gas composition and bulk methane and CO2 isotope analyses were analysed a Agilent GC. Carbon isotopes of methane on an Agilent 6890N GC interfaced to a Thermo Delta S IRMS. Methane isotopes on an Agilent 7890A GC interfaced to a MAT 253 IRMS. Methane clumped isotope analyses are conducted on a Thermo Scientific IRMS-253 Ultra.