Basu, S;
Jones, A;
Mahzari, P;
(2020)
Best Practices for Shale Core Handling: Transportation, Sampling and Storage for Conduction of Analyses.
Journal of Marine Science and Engineering
, 8
(2)
, Article 136. 10.3390/jmse8020136.
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Abstract
Drill core shale samples are critical for palaeoenvironmental studies and potential hydrocarbon reservoirs. They need to be preserved carefully to maximise their retention of reservoir condition properties. However, they are susceptible to alteration due to cooling and depressurisation during retrieval to the surface, resulting in volume expansion and formation of desiccation and micro fractures. This leads to inconsistent measurements of different critical attributes, such as porosity and permeability. Best practices for core handling start during retrieval while extracting from the barrel, followed by correct procedures for transportation and storage. Appropriate preservation measures should be adopted depending on the objectives of the scientific investigation and core coherency, with respect to consolidation and weathering. It is particularly desirable to maintain a constant temperature of 1 to 4 °C and a consistent relative humidity of >75% to minimise any micro fracturing and internal moisture movement in the core. While core re-sampling, it should be ensured that there is no further core compaction, especially while using a hand corer.
Type: | Article |
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Title: | Best Practices for Shale Core Handling: Transportation, Sampling and Storage for Conduction of Analyses |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.3390/jmse8020136 |
Publisher version: | https://doi.org/10.3390/jmse8020136 |
Language: | English |
Additional information: | © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | shale; drill core instability; micro fracture; clay minerals |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences |
URI: | https://discovery.ucl.ac.uk/id/eprint/10093460 |
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