Numerical Analysis of Dissociation in Gas Hydrate Experimental ProductionSystem using Depressurization

Seong-Min Gil; Hyo-Jin Shin; Sung-Min Lee; Jong-Se Lim; Jaehyoung Lee

doi:10.12972/ksmer.2017.54.3.233

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2017 Vol.54, Issue 3 Preview Page Next Page

Research Paper

Numerical Analysis of Dissociation in Gas Hydrate Experimental ProductionSystem using Depressurization 가스하이드레이트 생산모사 실험시스템 내 감압법 적용에 따른 해리거동 전산분석 연구

30 June 2017. pp. 233-241

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Abstract

In order to develop the gas hydrate(GH) in the Ulleung Basin, East Sea of Korea, the Korea Institute of Geoscience and Mineral Resources created a GH Experimental Production System using depressurization that reflects the sedimentary environment of field production test region to determine the production efficiency and field application. In this study, numerical analysis has been conducted and verified by comparing experimental and simulation results. The results of the numerical simulation showed similar total and dissolved gas production as compared to the experimental result. Also, sensitivity analysis is conducted using the verified simulation model. As a result, absolute permeability and thermal conductivity affect the gas production rate. In the future, simulation model can be used to predict the gas production from the experimental result under the various conditions.

Keywords

Gas hydrate

Experimental production system

Depressurization

Numerical analysis

동해 울릉분지에 부존되어 있는 가스하이드레이트 개발을 위하여 현장 적용성 확장과 생산기법의 효율성을 파악하고자 한국지질자원연구원에서는 감압법을 이용하여 현장시험생산 후보지의 퇴적환경을 모사한 중규모 가스하이드레이트 생산모사 실험 연구를 수행하였다. 이 연구에서는 전산수치 해석을 통해 실험 결과에 대한 검증을 하고자 실험시스템을 모사한 전산수치 모델을 구축하여 실험 결과와의 비교·분석을 수행하였으며, 이를 통해 총 가스 및 용존 가스의 생산경향이 실험 결과와 유사한 양상을 보이는 것을 확인하였다. 또한 구축된 전산수치 모델을 활용하여 퇴적물성에 따른 민감도 분석을 수행하였으며, 절대유체투과도와 열전도도가 증가함에 따라 가스 생산속도에 영향을 미치는 것을 파악할 수 있었다. 향후 구축된 전산수치 모델을 활용하여 다양한 조건의 생산모사 실험시스템에 대한 생산거동을 예측할 수 있을 것으로 사료된다.

키워드

가스하이드레이트

생산모사 실험시스템

감압법

전산수치 해석

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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 :3
Pages :233-241
Received Date : 2017-05-24
Revised Date : 2017-06-26
Accepted Date : 2017-06-22
DOI :https://doi.org/10.12972/ksmer.2017.54.3.233

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

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