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2021 Vol.43, Issue 4 Preview Page

Article

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

Seo-Yoon Moon1
,
Hyo-Jin Shin2
,
Jong-Se Lim2*
문 서윤1
,
신 효진2
,
임 종세2*
1EIP Asset Management Co., Ltd., Seoul 07326, Korea
2Department of Energy and Resources Engineering, College of Ocean Science and Technology, Korea Maritime and Ocean University, Busan 49112, Korea
1이아이피자산운용㈜ (07326) 서울특별시 영등포구 국제금융로 10
2한국해양대학교 해양과학기술대학 에너지자원공학과 (49112) 부산광역시 영도구 태종로 727
*Corresponding Author
30 December 2021. pp. 295-306
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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
gas hydrate
depressurization
multi-wells
numerical analysis
Ulleung Basin
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Information
  • Publisher :Korea Institute of Ocean Science and Technology
  • Publisher(Ko) :한국해양과학기술원
  • Journal Title :Ocean and Polar Research
  • Journal Title(Ko) :Ocean and Polar Research
  • Volume : 43
  • No :4
  • Pages :295-306
  • Received Date : 2021-08-10
  • Revised Date : 2021-11-10
  • Accepted Date : 2021-11-15
  • DOI :https://doi.org/10.4217/OPR.2021.43.4.295
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