Development of Gas Hydrate Experimental Production System Combined With X-ray CT

Hwasoo Suk; Taewoong Ahn; Jaehyoung Lee; Minhui Lee; Joo Yong Lee

doi:10.32390/ksmer.2018.55.3.226

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2018 Vol.55, Issue 3 Preview Page Next Page

Technical Report

Development of Gas Hydrate Experimental Production System Combined With X-ray CT X-ray CT를 결합한 가스하이드레이트 생산모사 실험시스템 개발

29 June 2018. pp. 226-237

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Abstract

Gas hydrate, which has a huge volume, is an attractive resource for next generation but it’s production technology faces problems related with efficiency and stability for commercialization. Research has been conducted to resolve these problems. However, a lot of conventional core analysis have limitation on identifying the solid and fluid distribution in cell. This paper suggests a gas hydrate experimental production system combined with X-ray CT to simulate onsite and to conduct the depressurization. The X-ray CT images acquired during the entire experiment show that not only location of sediment, but also the distribution of hydrate, water, and gas in pores can be visualized. The new system is also able to quantify phase’s change through normalized CT value. The proposed experimental system is expected to be useful for optimizing main depressurization parameters for future test production in the field.

Keywords

Gas hydrate

Depressurization

X-ray CT

Core analysis

막대한 부존량을 가진 가스하이드레이트는 차세대 에너지원으로 주목받고 있으나, 상업화를 위하여 생산기술의 효율성 제고 및 안정성 확보 문제에 당면하고 있다. 이를 위하여 새로운 생산기법 적용과 그에 따른 생산거동을 분석하는 연구가 활발히 진행되고 있으나, 기존의 코어유동분석 실험연구는 시료 내 고체 및 유체의 분포를 파악하는데 한계가 있었다. 본 연구는 X-ray CT를 결합한 가스하이드레이트 생산모사 실험시스템을 개발하여 실제 가스하이드레이트가 부존하고 있는 환경을 모사하고, 감압생산 실험을 수행하였다. 실험 전 과정에서 획득한 X-ray CT 영상으로 퇴적시료의 위치분포뿐만 아니라, 공극 내 분포하는 하이드레이트, 물, 가스의 분포까지 가시화할 수 있었다. 또한 정규화 CT 값을 통해 상 변화의 정량분석 가능성을 확인하였다. 개발한 실험시스템은 향후 시험생산을 위한 주요 감압변수 규명 실험에 유용할 것으로 기대된다.

키워드

가스하이드레이트

감압생산

X-ray CT

코어유동분석

References

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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 : 55
No :3
Pages :226-237
Received Date : 2018-06-01
Revised Date : 2018-06-21
Accepted Date : 2018-06-22
DOI :https://doi.org/10.32390/ksmer.2018.55.3.226

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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