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Probabilistic Analysis using Economical Evaluation for Shale Gas Development

셰일가스 개발 시 확률론적 분석 기법을 이용한 경제성 평가

  • Moon, Young-Jun (Dept. of Energy & Resources Engineering, Korea Maritime and Ocean University) ;
  • Moon, Seo-Yoon (Dept. of Energy & Resources Engineering, Korea Maritime and Ocean University) ;
  • Gil, Seong-Min (Dept. of Energy & Resources Engineering, Korea Maritime and Ocean University) ;
  • Shin, Hyo-Jin (Dept. of Energy & Resources Engineering, Korea Maritime and Ocean University) ;
  • Lim, Jong-Se (Dept. of Energy & Resources Engineering, Korea Maritime and Ocean University)
  • 문영준 (한국해양대학교 에너지자원공학과) ;
  • 문서윤 (한국해양대학교 에너지자원공학과) ;
  • 길성민 (한국해양대학교 에너지자원공학과) ;
  • 신효진 (한국해양대학교 에너지자원공학과) ;
  • 임종세 (한국해양대학교 에너지자원공학과)
  • Received : 2017.11.15
  • Accepted : 2018.02.21
  • Published : 2018.04.30

Abstract

In recent years, payability of shale gas production has worsened due to oil and gas price declines resulting from sharply increasing shale gas production. Reliable economic evaluation in shale gas development has become important. In this study, Monte Carlo simulation of probabilistic analysis technique was applied to analyze the economic feasibility considering the uncertainty involved in shale gas development. For this, the range of major variables is set and a random number is generated to derive the probability distribution of Net Present Value(NPV) and Internal Rate of Return(IRR). Consequently, we estimated the probability that the feasibility of the project is evaluated to be positive when developing shale gas in the study area. In addition, sensitivity analysis of major parameters affecting economic efficiency in shale gas development was carried out, and the effect of major variables in economic evaluation for commercial production was identified. In the future, this study could be used to make decision for shale gas production by presenting the range of variation of economic index and probability value.

최근 셰일가스 생산량의 급증에 따른 유 가스 가격 하락이 셰일가스 생산의 채산성 악화를 초래하여 셰일가스 개발 시 신뢰성 있는 경제성 평가가 중요해졌다. 따라서 이 연구에서는 확률론적 분석 기법 중 몬테카를로 시뮬레이션을 적용하여 셰일가스 개발 시 수반되는 불확실성을 고려한 경제성 분석을 수행하고자 하였다. 이를 위해 주요 변수들의 범위를 설정한 후 난수를 발생시켜 순현재가치(Net Present Value, NPV)와 내부수익률(Internal Rate of Return, IRR)의 확률분포를 도출하였고, 연구대상지역에서의 셰일가스 개발 시 사업 타당성이 긍정적으로 판단되는 확률을 추정하였다. 또한 셰일가스 개발 시 경제성에 영향을 미치는 주요 변수에 대한 민감도 분석을 수행하여 상업적인 생산을 위한 경제성 평가 시 주요 변수들의 영향을 파악하였다. 향후 대상지역의 경제성 지표 변동범위와 확률 값을 도출하는 이 연구의 결과는 셰일가스 생산을 위한 의사결정에 활용될 수 있을 것으로 사료된다.

Keywords

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