Experimental study on acid injection for enhanced gas recovery from gas hydrate reservoir

Yusuke Nakano, Fuyuki Kaneko, Kengo Nakamura, Yasuhide Sakamoto, Takeshi Komai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In-situ dissociation process of gas hydrate by Partial-oxidation and heating through acid or oxidant injection into the reservoir has been proposed. However, it was only evaluated by simulator based on the calorific value of acid. In this study, we carried out gas hydrate dissociation experiments in laboratory scale, by acid injection for the evaluation of this process. From the results, we clarified that the equilibrium temperature shifts to low temperature. In the case of acid injection, the equilibrium temperature decreased from 6.6 °C to 3.5 °C. The gas production rate was enhanced to more than twice due to the effects of exothermic reaction and inhibitor.

Original languageEnglish
Title of host publicationProceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018
PublisherInternational Society of Offshore and Polar Engineers
Pages199-204
Number of pages6
ISBN (Print)9781880653876
Publication statusPublished - 2018 Jan 1
Event28th International Ocean and Polar Engineering Conference, ISOPE 2018 - Sapporo, Japan
Duration: 2018 Jun 102018 Jun 15

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume2018-June
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other28th International Ocean and Polar Engineering Conference, ISOPE 2018
Country/TerritoryJapan
CitySapporo
Period18/6/1018/6/15

Keywords

  • Acid injection
  • Dissociation
  • Dissolution
  • Gas hydrate
  • Heating
  • Inhibitor
  • Methane hydrate

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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