Real-Time Detection of Karstification Hazards While Drilling in Carbonates
The nature of carbonate deposition can cause the development of unique geological features such as cavities and vugs called karsts. Encountering karsts while drilling can lead to serious consequences. To improve drilling safety in intervals of karstification, it is important to detect karsts as earl...
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ftdoajarticles:oai:doaj.org/article:093ef17bd2ea478e8828a763883354b5 2023-05-15T15:38:57+02:00 Real-Time Detection of Karstification Hazards While Drilling in Carbonates Danil Maksimov Alexey Pavlov Sigbjørn Sangesland 2022-07-01T00:00:00Z https://doi.org/10.3390/en15144951 https://doaj.org/article/093ef17bd2ea478e8828a763883354b5 EN eng MDPI AG https://www.mdpi.com/1996-1073/15/14/4951 https://doaj.org/toc/1996-1073 doi:10.3390/en15144951 1996-1073 https://doaj.org/article/093ef17bd2ea478e8828a763883354b5 Energies, Vol 15, Iss 4951, p 4951 (2022) carbonate karst geophysics hazards mapping karst prediction Technology T article 2022 ftdoajarticles https://doi.org/10.3390/en15144951 2022-12-30T22:10:05Z The nature of carbonate deposition can cause the development of unique geological features such as cavities and vugs called karsts. Encountering karsts while drilling can lead to serious consequences. To improve drilling safety in intervals of karstification, it is important to detect karsts as early as possible. The use of state-of-the-art geophysical methods cannot guarantee early or even real-time detection of karsts or karstification zones. In this paper we demonstrate, based on an analysis of 20 wells drilled in karstified carbonates in the Barents Sea, that a karst that is dangerous for drilling is often surrounded by one or more other karstification objects, thus forming a karstification zone. These zones can be detected in real time through certain patterns in drillstring mechanics and mud flow measurements. They can serve as indicators of intervals with a high likelihood of encountering karsts. The identified patterns corresponding to various karstification objects are summarized in a table and can be used by drilling engineers. Apart from that, these patterns can also be utilized for training machine learning algorithms for the automatic detection of karstification zones. Article in Journal/Newspaper Barents Sea Directory of Open Access Journals: DOAJ Articles Barents Sea Energies 15 14 4951 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
carbonate karst geophysics hazards mapping karst prediction Technology T |
spellingShingle |
carbonate karst geophysics hazards mapping karst prediction Technology T Danil Maksimov Alexey Pavlov Sigbjørn Sangesland Real-Time Detection of Karstification Hazards While Drilling in Carbonates |
topic_facet |
carbonate karst geophysics hazards mapping karst prediction Technology T |
description |
The nature of carbonate deposition can cause the development of unique geological features such as cavities and vugs called karsts. Encountering karsts while drilling can lead to serious consequences. To improve drilling safety in intervals of karstification, it is important to detect karsts as early as possible. The use of state-of-the-art geophysical methods cannot guarantee early or even real-time detection of karsts or karstification zones. In this paper we demonstrate, based on an analysis of 20 wells drilled in karstified carbonates in the Barents Sea, that a karst that is dangerous for drilling is often surrounded by one or more other karstification objects, thus forming a karstification zone. These zones can be detected in real time through certain patterns in drillstring mechanics and mud flow measurements. They can serve as indicators of intervals with a high likelihood of encountering karsts. The identified patterns corresponding to various karstification objects are summarized in a table and can be used by drilling engineers. Apart from that, these patterns can also be utilized for training machine learning algorithms for the automatic detection of karstification zones. |
format |
Article in Journal/Newspaper |
author |
Danil Maksimov Alexey Pavlov Sigbjørn Sangesland |
author_facet |
Danil Maksimov Alexey Pavlov Sigbjørn Sangesland |
author_sort |
Danil Maksimov |
title |
Real-Time Detection of Karstification Hazards While Drilling in Carbonates |
title_short |
Real-Time Detection of Karstification Hazards While Drilling in Carbonates |
title_full |
Real-Time Detection of Karstification Hazards While Drilling in Carbonates |
title_fullStr |
Real-Time Detection of Karstification Hazards While Drilling in Carbonates |
title_full_unstemmed |
Real-Time Detection of Karstification Hazards While Drilling in Carbonates |
title_sort |
real-time detection of karstification hazards while drilling in carbonates |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/en15144951 https://doaj.org/article/093ef17bd2ea478e8828a763883354b5 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_source |
Energies, Vol 15, Iss 4951, p 4951 (2022) |
op_relation |
https://www.mdpi.com/1996-1073/15/14/4951 https://doaj.org/toc/1996-1073 doi:10.3390/en15144951 1996-1073 https://doaj.org/article/093ef17bd2ea478e8828a763883354b5 |
op_doi |
https://doi.org/10.3390/en15144951 |
container_title |
Energies |
container_volume |
15 |
container_issue |
14 |
container_start_page |
4951 |
_version_ |
1766370380953419776 |