The lithological characteristics of natural gas hydrates in permafrost on the Qinghai of China
Abstract The environment is seriously threatened by the methane emitted as permafrost melts. Studying deposits of natural gas hydrates that include methane is therefore important. This study presents a novel approach based on the rock Archie formula to discover the porosity and saturation of gas hyd...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Nature Portfolio
2022
|
Subjects: | |
Online Access: | https://doi.org/10.1038/s41598-022-17475-7 https://doaj.org/article/c84f93dacc2545ef9be24ac5698315dc |
id |
ftdoajarticles:oai:doaj.org/article:c84f93dacc2545ef9be24ac5698315dc |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:c84f93dacc2545ef9be24ac5698315dc 2023-05-15T17:56:15+02:00 The lithological characteristics of natural gas hydrates in permafrost on the Qinghai of China Da Lei Changmin Fu Qihui Zhen Zhongxing Wang Ruo Wang 2022-08-01T00:00:00Z https://doi.org/10.1038/s41598-022-17475-7 https://doaj.org/article/c84f93dacc2545ef9be24ac5698315dc EN eng Nature Portfolio https://doi.org/10.1038/s41598-022-17475-7 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-022-17475-7 2045-2322 https://doaj.org/article/c84f93dacc2545ef9be24ac5698315dc Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022) Medicine R Science Q article 2022 ftdoajarticles https://doi.org/10.1038/s41598-022-17475-7 2022-12-31T01:00:13Z Abstract The environment is seriously threatened by the methane emitted as permafrost melts. Studying deposits of natural gas hydrates that include methane is therefore important. This study presents a novel approach based on the rock Archie formula to discover the porosity and saturation of gas hydrates. The relationship between resistivity and porosity and the porosity of hydrates was studied, and the results showed that the resistivity of hydrate reservoirs was closely related to porosity and hydrate saturation, and the polarization rate was only related to the concentration of natural gas hydrates and had nothing to do with porosity. Using the multi-channel time domain induced polarization (MTIP) method, the profile with five boreholes in the Muli area of the permafrost area of the Qinghai-Tibet Plateau was observed, and the thickness of the shallow permafrost distribution and the underground structure were inferred based on the resistivity of the MTIP data. The polarization rate and hydrate saturation of the inversion assessed the presence of hydrates in the Muli region. The results show that the MTIP method can be used to detect the thickness of permafrost distribution, determine fault boundaries, reveal the distribution of natural gas transport paths, and evaluate the presence of natural gas hydrates. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Scientific Reports 12 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Da Lei Changmin Fu Qihui Zhen Zhongxing Wang Ruo Wang The lithological characteristics of natural gas hydrates in permafrost on the Qinghai of China |
topic_facet |
Medicine R Science Q |
description |
Abstract The environment is seriously threatened by the methane emitted as permafrost melts. Studying deposits of natural gas hydrates that include methane is therefore important. This study presents a novel approach based on the rock Archie formula to discover the porosity and saturation of gas hydrates. The relationship between resistivity and porosity and the porosity of hydrates was studied, and the results showed that the resistivity of hydrate reservoirs was closely related to porosity and hydrate saturation, and the polarization rate was only related to the concentration of natural gas hydrates and had nothing to do with porosity. Using the multi-channel time domain induced polarization (MTIP) method, the profile with five boreholes in the Muli area of the permafrost area of the Qinghai-Tibet Plateau was observed, and the thickness of the shallow permafrost distribution and the underground structure were inferred based on the resistivity of the MTIP data. The polarization rate and hydrate saturation of the inversion assessed the presence of hydrates in the Muli region. The results show that the MTIP method can be used to detect the thickness of permafrost distribution, determine fault boundaries, reveal the distribution of natural gas transport paths, and evaluate the presence of natural gas hydrates. |
format |
Article in Journal/Newspaper |
author |
Da Lei Changmin Fu Qihui Zhen Zhongxing Wang Ruo Wang |
author_facet |
Da Lei Changmin Fu Qihui Zhen Zhongxing Wang Ruo Wang |
author_sort |
Da Lei |
title |
The lithological characteristics of natural gas hydrates in permafrost on the Qinghai of China |
title_short |
The lithological characteristics of natural gas hydrates in permafrost on the Qinghai of China |
title_full |
The lithological characteristics of natural gas hydrates in permafrost on the Qinghai of China |
title_fullStr |
The lithological characteristics of natural gas hydrates in permafrost on the Qinghai of China |
title_full_unstemmed |
The lithological characteristics of natural gas hydrates in permafrost on the Qinghai of China |
title_sort |
lithological characteristics of natural gas hydrates in permafrost on the qinghai of china |
publisher |
Nature Portfolio |
publishDate |
2022 |
url |
https://doi.org/10.1038/s41598-022-17475-7 https://doaj.org/article/c84f93dacc2545ef9be24ac5698315dc |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022) |
op_relation |
https://doi.org/10.1038/s41598-022-17475-7 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-022-17475-7 2045-2322 https://doaj.org/article/c84f93dacc2545ef9be24ac5698315dc |
op_doi |
https://doi.org/10.1038/s41598-022-17475-7 |
container_title |
Scientific Reports |
container_volume |
12 |
container_issue |
1 |
_version_ |
1766164378792493056 |