Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Productivity Analysis for Multi-Wells Depressurization of Gas Hydrate Bearing Sediments in Ulleung Basin, East Sea of Korea

동해 울릉분지 가스하이드레이트 퇴적층 내 다중정 감압에 따른 생산성 분석

  • Moon, Seo-Yoon (EIP Asset Management Co., Ltd.) ;
  • Shin, Hyo-Jin (Department of Energy and Resources Engineering, College of Ocean Science and Technology, Korea Maritime and Ocean University) ;
  • Lim, Jong-Se (Department of Energy and Resources Engineering, College of Ocean Science and Technology, Korea Maritime and Ocean University)
  • 문서윤 (이아이피자산운용(주)) ;
  • 신효진 (한국해양대학교 해양과학기술대학 에너지자원공학) ;
  • 임종세 (한국해양대학교 해양과학기술대학 에너지자원공학)
  • Received : 2021.09.10
  • Accepted : 2021.11.15
  • Published : 2021.12.30
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Abstract

A field scale productivity analysis is required for the development of gas hydrate in marine sedimentary layers to verify the field applicability of production techniques and to improve productivity. In this study, the productivity resulting from the application of depressurization using multi-wells for the development of gas hydrate in the Ulleung Basin, East Sea of Korea, was determined. A numerical analysis model reflecting the conditions of candidate sites for the Ulleung Basin was constructed, and the productivity and dissociation behavior were comparatively analyzed. The pressure propagation and gas hydrate dissociation region by the multi-wells were wider and the productivity was higher than that of a single well. Different depressurization effects according to the spacing of multi-wells affected productivity. The results provide basic data for productivity analysis when establishing a field test production plan for the Ulleung Basin.

Keywords

Acknowledgement

이 논문은 2021년도 산업통상자원부의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구입니다(No. 20216110100050).

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