Abstract
Hydrate re-formation can lead to the blockage of gas recovery during natural gas hydrates production process. However, the hydrate re-formation induced by fluid migration is ignored. In this work, hydrate re-formation behaviors in porous media were investigated via two types of the fluid migration: gas migration and liquid migration. The gas migration was conducted by the following two ways: migration from top to bottom, and migration from bottom to top. The marine soil from South China sea was utilized to reconstruct hydrate samples. The results indicated that the average temperature rise with liquid migration is twice as large as that of the gas migration. What's more, the maximum temperature increment of decomposed-reservoir reaches 9 K. In addition, it was found that there was a duration of 60 min until hydrate re-formation at the end of the liquid migration process. Surprisingly, the fluid migration had a positive influence on inhibiting hydrate re-formation. The findings of this study suggest that the fluid migration could inhibit the hydrate re-formation in depressurized-decomposed-reservoir.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
