Study on Hydrate Risk in the Water Drainage Pipeline for Offshore Natural Gas Hydrate Pilot Production
Hydrate plug in the drainage line is a serious flow assurance problem for the pilot production of offshore natural gas hydrates. Current research focuses on hydrate deposition in the annular flow and the oil-dominated system. The multiphase flow system in the drainage line is a water-dominated syste...
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ftdoajarticles:oai:doaj.org/article:b595ecb498db42bdbbd95585e5b3e110 2023-05-15T17:11:51+02:00 Study on Hydrate Risk in the Water Drainage Pipeline for Offshore Natural Gas Hydrate Pilot Production Yu Guimin Jin Hao Kong Qingwen 2022-02-01T00:00:00Z https://doi.org/10.3389/feart.2021.816873 https://doaj.org/article/b595ecb498db42bdbbd95585e5b3e110 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2021.816873/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2021.816873 https://doaj.org/article/b595ecb498db42bdbbd95585e5b3e110 Frontiers in Earth Science, Vol 9 (2022) methane hydrate drainage line hydrate formation bubbly flow risk Science Q article 2022 ftdoajarticles https://doi.org/10.3389/feart.2021.816873 2022-12-30T20:23:50Z Hydrate plug in the drainage line is a serious flow assurance problem for the pilot production of offshore natural gas hydrates. Current research focuses on hydrate deposition in the annular flow and the oil-dominated system. The multiphase flow system in the drainage line is a water-dominated system which is normally a bubbly flow. In this work, a new model is developed to study the temperature and pressure field in the drainage line considering that the flow pattern is bubbly flow. Combining with the methane hydrate phase equilibrium curve, the hydrate formation region in the drainage line can be established. The hydrate formation region is enlarged with the ESP pressure increasing and the water production rate decreasing, since the ESP can supply extra pressures in the drainage line and the heat transfer phenomenon is enhanced between the drainage line and environment under the low water production rate condition. The model pointed out that the risk of hydrate formation rises up as the hydrate concentration increases beyond 6%. This study can lay a theoretical foundation for the efficient prevention of gas hydrates in the drainage line during offshore natural gas hydrate pilot or long-term production. Article in Journal/Newspaper Methane hydrate Directory of Open Access Journals: DOAJ Articles Frontiers in Earth Science 9 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
methane hydrate drainage line hydrate formation bubbly flow risk Science Q |
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methane hydrate drainage line hydrate formation bubbly flow risk Science Q Yu Guimin Jin Hao Kong Qingwen Study on Hydrate Risk in the Water Drainage Pipeline for Offshore Natural Gas Hydrate Pilot Production |
topic_facet |
methane hydrate drainage line hydrate formation bubbly flow risk Science Q |
description |
Hydrate plug in the drainage line is a serious flow assurance problem for the pilot production of offshore natural gas hydrates. Current research focuses on hydrate deposition in the annular flow and the oil-dominated system. The multiphase flow system in the drainage line is a water-dominated system which is normally a bubbly flow. In this work, a new model is developed to study the temperature and pressure field in the drainage line considering that the flow pattern is bubbly flow. Combining with the methane hydrate phase equilibrium curve, the hydrate formation region in the drainage line can be established. The hydrate formation region is enlarged with the ESP pressure increasing and the water production rate decreasing, since the ESP can supply extra pressures in the drainage line and the heat transfer phenomenon is enhanced between the drainage line and environment under the low water production rate condition. The model pointed out that the risk of hydrate formation rises up as the hydrate concentration increases beyond 6%. This study can lay a theoretical foundation for the efficient prevention of gas hydrates in the drainage line during offshore natural gas hydrate pilot or long-term production. |
format |
Article in Journal/Newspaper |
author |
Yu Guimin Jin Hao Kong Qingwen |
author_facet |
Yu Guimin Jin Hao Kong Qingwen |
author_sort |
Yu Guimin |
title |
Study on Hydrate Risk in the Water Drainage Pipeline for Offshore Natural Gas Hydrate Pilot Production |
title_short |
Study on Hydrate Risk in the Water Drainage Pipeline for Offshore Natural Gas Hydrate Pilot Production |
title_full |
Study on Hydrate Risk in the Water Drainage Pipeline for Offshore Natural Gas Hydrate Pilot Production |
title_fullStr |
Study on Hydrate Risk in the Water Drainage Pipeline for Offshore Natural Gas Hydrate Pilot Production |
title_full_unstemmed |
Study on Hydrate Risk in the Water Drainage Pipeline for Offshore Natural Gas Hydrate Pilot Production |
title_sort |
study on hydrate risk in the water drainage pipeline for offshore natural gas hydrate pilot production |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/feart.2021.816873 https://doaj.org/article/b595ecb498db42bdbbd95585e5b3e110 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Frontiers in Earth Science, Vol 9 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2021.816873/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2021.816873 https://doaj.org/article/b595ecb498db42bdbbd95585e5b3e110 |
op_doi |
https://doi.org/10.3389/feart.2021.816873 |
container_title |
Frontiers in Earth Science |
container_volume |
9 |
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1766068606626430976 |