에너지공학 (Journal of Energy Engineering)

  • 제24권4호
  • /
  • Pages.1-10
  • /
  • 2015
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  • 1598-7981(pISSN)
  • /
  • 2713-7074(eISSN)
한국에너지학회 (The Korean Society for Energy)
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수공법 주입량 최적설계를 위한 Well Allocation Factor 적용 연구

Application of Well Allocation Factor for Injection Optimization of Waterflooding

  • 윤수진 (한국해양대학교 에너지자원공학과) ;
  • 강판상 (한국해양대학교 에너지자원공학과) ;
  • 임종세 (한국해양대학교 에너지자원공학과)
  • Yoon, Su-Jin (Department of Energy and Resources Engineering, Korea Maritime and Ocean University) ;
  • Kang, Pan-Sang (Department of Energy and Resources Engineering, Korea Maritime and Ocean University) ;
  • Lim, Jong-Se (Department of Energy and Resources Engineering, Korea Maritime and Ocean University)
  • 투고 : 2015.10.28
  • 심사 : 2015.12.10
  • 발행 : 2015.12.31
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초록

석유생산을 증진시키기 위해 널리 사용되는 대표적인 방법 중 하나인 수공법을 성공적으로 수행하기 위해서는 적절한 물주입량을 정하는 것이 중요하다. 일반적으로 수공법의 주입유량을 할당하기 위하여 생산정과 주입정사이 관계를 정량화하는 well allocation factor(WAF)를 이용한다. 수공법 배열의 기하학적 구조에 따라 WAF를 도출하는 정적(static) WAF는 저류층 물성 및 현장 조건에 대해 고려하지 않기 때문에 부정확한 값을 도출하는 한계가 있어 이를 보완하기 위해 주입 유량, 생산정과 주입정 사이 거리, 주입정 반경 등을 고려한 modified WAF 방법이 제안되었다. 이 연구에서는 정적 WAF와 modified WAF를 적용하여 수공법의 물 주입량을 최적설계하고 결과를 비교 분석하였다. 현장 조건을 고려하지 않는 정적 WAF 보다 modified WAF 방법을 이용하여 물 주입유량을 설계한 경우 적은 양의 물이 주입되면서 생산되는 물의 양이 감소함과 동시에 추가로 생산할 수 있는 석유의 양이 증가하는 것을 확인하였다. 특히 modified WAF 방법은 주입정과 생산정 사이 거리의 변화가 클 경우 주입 유량 최적설계에 효과적임을 확인할 수 있었다.

For successful operation of waterflooding which is one of secondary recovery methods, suitable water injection allocation is important to increase oil recovery. Well allocation factor(WAF) which is one way to quantify the injector and producer connectivity, is utilized to allocate water injection of waterflooding. Static WAF cannot represent the field condition and can induce incorrect value. To compensate for limitation of static WAF, modified WAF which includes several parameters that affect patterns including well radius, distance between wells, and injection rates is proposed. In this study, static and modified WAFs were applied to injection optimization of waterflooding and results by each WAF were compared. In case of modified WAFs, produced water were less and produced oil were more than case of static WAF especially in big change of distance between producer and injector. Therefore, modified WAFs can allocate water injection more efficiently than static WAF.

키워드

참고문헌

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