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Seismic velocity changes in the Groningen reservoir associated with distant drilling

In this study, we show that passively recorded data of nearby passing trains by a deep borehole geophone array could be linked to fluctuations of the gas-water contact in the Groningen reservoir in The Netherlands. During a period of 1.5 months, changes of inter-geophone P-wave travel times were det...

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Autores principales: Zhou, Wen, Paulssen, Hanneke
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9585063/
https://www.ncbi.nlm.nih.gov/pubmed/36266405
http://dx.doi.org/10.1038/s41598-022-22351-5
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author Zhou, Wen
Paulssen, Hanneke
author_facet Zhou, Wen
Paulssen, Hanneke
author_sort Zhou, Wen
collection PubMed
description In this study, we show that passively recorded data of nearby passing trains by a deep borehole geophone array could be linked to fluctuations of the gas-water contact in the Groningen reservoir in The Netherlands. During a period of 1.5 months, changes of inter-geophone P-wave travel times were detected by deconvolution interferometry of the recorded train signals. P-to-S converted waves, obtained by deconvolution of the horizontal component by the vertical component at individual geophones, showed simultaneous variations. The observed travel-time changes could be related to fluctuations of the gas-water contact in the observation well caused by pressure variations at a well drilling 4.5 km away. The [Formula: see text] 3.5 day delay between drilling in the reservoir and the seismic response yields a hydraulic diffusivity of approximately 5 m[Formula: see text] /s and suggests that the pressure front is effectively propagated over such a long distance. Our observations illustrate that downhole geophone arrays can be used to monitor changes in the subsurface if repeating noise sources are available, and that unexpected effects may occur due to drilling.
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spelling pubmed-95850632022-10-22 Seismic velocity changes in the Groningen reservoir associated with distant drilling Zhou, Wen Paulssen, Hanneke Sci Rep Article In this study, we show that passively recorded data of nearby passing trains by a deep borehole geophone array could be linked to fluctuations of the gas-water contact in the Groningen reservoir in The Netherlands. During a period of 1.5 months, changes of inter-geophone P-wave travel times were detected by deconvolution interferometry of the recorded train signals. P-to-S converted waves, obtained by deconvolution of the horizontal component by the vertical component at individual geophones, showed simultaneous variations. The observed travel-time changes could be related to fluctuations of the gas-water contact in the observation well caused by pressure variations at a well drilling 4.5 km away. The [Formula: see text] 3.5 day delay between drilling in the reservoir and the seismic response yields a hydraulic diffusivity of approximately 5 m[Formula: see text] /s and suggests that the pressure front is effectively propagated over such a long distance. Our observations illustrate that downhole geophone arrays can be used to monitor changes in the subsurface if repeating noise sources are available, and that unexpected effects may occur due to drilling. Nature Publishing Group UK 2022-10-20 /pmc/articles/PMC9585063/ /pubmed/36266405 http://dx.doi.org/10.1038/s41598-022-22351-5 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Zhou, Wen
Paulssen, Hanneke
Seismic velocity changes in the Groningen reservoir associated with distant drilling
title Seismic velocity changes in the Groningen reservoir associated with distant drilling
title_full Seismic velocity changes in the Groningen reservoir associated with distant drilling
title_fullStr Seismic velocity changes in the Groningen reservoir associated with distant drilling
title_full_unstemmed Seismic velocity changes in the Groningen reservoir associated with distant drilling
title_short Seismic velocity changes in the Groningen reservoir associated with distant drilling
title_sort seismic velocity changes in the groningen reservoir associated with distant drilling
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9585063/
https://www.ncbi.nlm.nih.gov/pubmed/36266405
http://dx.doi.org/10.1038/s41598-022-22351-5
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