Determination of permafrost thickness in wells in northern Canada
Accurate interpretation of geophysical data, design of safe casing strings for drilling and production operations, and determination of the potential for existence of gas hydrates in and immediately below the permafrost zone are only possible if the thickness of the permafrost zone can be accurately...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1977
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Online Access: | http://dx.doi.org/10.1139/e77-038 http://www.nrcresearchpress.com/doi/pdf/10.1139/e77-038 |
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crcansciencepubl:10.1139/e77-038 2023-12-17T10:48:22+01:00 Determination of permafrost thickness in wells in northern Canada Hnatiuk, J. Randall, A. G. 1977 http://dx.doi.org/10.1139/e77-038 http://www.nrcresearchpress.com/doi/pdf/10.1139/e77-038 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 14, issue 3, page 375-383 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1977 crcansciencepubl https://doi.org/10.1139/e77-038 2023-11-19T13:39:04Z Accurate interpretation of geophysical data, design of safe casing strings for drilling and production operations, and determination of the potential for existence of gas hydrates in and immediately below the permafrost zone are only possible if the thickness of the permafrost zone can be accurately determined.Freezing of interstitial water in soils has little effect on many of the physical properties of the soil, however, large changes in elastic properties and electrical resistivity do result. This makes it feasible to determine the thickness of the permafrost zone using techniques which measure changes in acoustic and electrical properties of the soils adjacent to the wellbore. This paper discusses the characteristic response which occurs as the borehole logging tool passes upwards from unfrozen sediments into the permafrost zone. It is this response which indicates the base of the permafrost zone and allows determination of permafrost thickness.Conclusive evidence of permafrost thickness and confirmation of permafrost thickness inferred from acoustic and electrical data is obtained from temperature data obtained subsequent to well suspension. Techniques utilized to obtain these temperature data are outlined in this paper. Article in Journal/Newspaper permafrost Canadian Science Publishing (via Crossref) Canada Canadian Journal of Earth Sciences 14 3 375 383 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Hnatiuk, J. Randall, A. G. Determination of permafrost thickness in wells in northern Canada |
topic_facet |
General Earth and Planetary Sciences |
description |
Accurate interpretation of geophysical data, design of safe casing strings for drilling and production operations, and determination of the potential for existence of gas hydrates in and immediately below the permafrost zone are only possible if the thickness of the permafrost zone can be accurately determined.Freezing of interstitial water in soils has little effect on many of the physical properties of the soil, however, large changes in elastic properties and electrical resistivity do result. This makes it feasible to determine the thickness of the permafrost zone using techniques which measure changes in acoustic and electrical properties of the soils adjacent to the wellbore. This paper discusses the characteristic response which occurs as the borehole logging tool passes upwards from unfrozen sediments into the permafrost zone. It is this response which indicates the base of the permafrost zone and allows determination of permafrost thickness.Conclusive evidence of permafrost thickness and confirmation of permafrost thickness inferred from acoustic and electrical data is obtained from temperature data obtained subsequent to well suspension. Techniques utilized to obtain these temperature data are outlined in this paper. |
format |
Article in Journal/Newspaper |
author |
Hnatiuk, J. Randall, A. G. |
author_facet |
Hnatiuk, J. Randall, A. G. |
author_sort |
Hnatiuk, J. |
title |
Determination of permafrost thickness in wells in northern Canada |
title_short |
Determination of permafrost thickness in wells in northern Canada |
title_full |
Determination of permafrost thickness in wells in northern Canada |
title_fullStr |
Determination of permafrost thickness in wells in northern Canada |
title_full_unstemmed |
Determination of permafrost thickness in wells in northern Canada |
title_sort |
determination of permafrost thickness in wells in northern canada |
publisher |
Canadian Science Publishing |
publishDate |
1977 |
url |
http://dx.doi.org/10.1139/e77-038 http://www.nrcresearchpress.com/doi/pdf/10.1139/e77-038 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Canadian Journal of Earth Sciences volume 14, issue 3, page 375-383 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e77-038 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
14 |
container_issue |
3 |
container_start_page |
375 |
op_container_end_page |
383 |
_version_ |
1785572505519390720 |