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General Remarks

Classification and Example of Assessment Methodologies for Shale Resources

셰일자원량 평가기법의 분류 및 적용사례

Kyungbook Lee1*
,
Byeong-Kook Son1
,
Won Suk Lee1
,
Hyun Suk Lee1
,
Jiyoung Choi1
,
Sung Kyung Hong1
이 경북1*
,
손 병국1
,
이 원석1
,
이 현석1
,
최 지영1
,
홍 성경1
1한국지질자원연구원 석유해저연구본부
* Corresponding Author
30 April 2017. pp. 185-200
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Abstract

This paper compares assessment methodologies for shale resources to understand the amount of shale resources, which are estimated from various organizations. The ARI and BGS methods, which are a typical bottom-up approach, estimate shale gas and oil resources by volumetrics using fundamental geology and engineering data. However, it introduces subjective success factors and recovery factor to convert the amount of originally in-place into risked technically recoverable resources. On the other hand, the USGS method adapts a top-down approach. Rather than focusing on the basic data, production-based data such as drainage area and expected ultimate recovery are utilized to directly assess productivity of concerned shale resources. This method uses analogue data from US database when available production data are limited. Therefore, we have to figure out features in the methodologies and to choose an appropriate assessment method according to given data.

Keywords
Shale gas
Shale oil
ARI method
USGS method
BGS method

본 해설에서는 여러 기관에서 발표되는 셰일자원량에 대한 이해를 돕기 위해 평가기법을 비교하였다. 평가방식에 따라 상향식 접근법과 하향식 접근법으로 나눌 수 있다. 대표적인 상향식 접근법인 ARI 및 영국지질조사서 방법론은 기초 지질 및 공학 자료를 이용해 용적법을 근간으로 하여 셰일 가스 및 오일 자원량을 평가한다. 하지만 ARI 방법론은 용적법으로 원시부존량을 구한 후, 주관성이 큰 성공률과 회수율 인자를 통해 회수가능위험자원량을 계산하는 문제점이 있다. 이에 반해 미국지질조사서 방법론은 하향식 접근법을 사용한다. 기초자료보다는 개별 유정의 배수구역과 궁극가채량과 같은 생산기반 자료를 이용하여 자원량을 산정한다. 생산자료가 없는 지역은 미국지역의 생산량정보를 유추하여 사용한다. 따라서 각 평가기법의 특징을 파악하고 평가하려는 셰일자원지역의 확보된 자료에 따라 적합한 방법론을 선정해야한다.

키워드
셰일가스
셰일오일
ARI 방법론
미국지질조사서 방법론
영국지질조사서 방법론
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 54
  • No :2
  • Pages :185-200
  • Received Date : 2017-03-21
  • Revised Date : 2017-04-26
  • Accepted Date : 2017-04-26
  • DOI :https://doi.org/10.12972/ksmer.2017.54.2.185
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