한국신재생에너지학회:학술대회논문집

한국신·재생에너지학회 (Korean Society for New and Renewable Energy)
권호 표지

가스하이드레이트 형성 과정의 비저항 모니터링

Electrical Resistivity Monitoring of Gas Hydrate Formation

  • Lee, J.Y. (Korea Institute of Geoscience and Mineralogy) ;
  • Lee, J.H. (Korea Institute of Geoscience and Mineralogy) ;
  • Lee, D.S. (Korea Institute of Geoscience and Mineralogy) ;
  • Lee, W.S. (Korea Institute of Geoscience and Mineralogy) ;
  • Kim, S.J. (Korea Institute of Geoscience and Mineralogy) ;
  • Huh, D.G. (Korea Institute of Geoscience and Mineralogy) ;
  • Kim, H.T. (Korea Institute of Geoscience and Mineralogy)
  • 발행 : 2008.10.16
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Electrical resistivity in hydrate-bearing sediments is sensitive to porosity, gas hydrate saturation, gas content, pore fluid composition, and temperature, so electrical measurements such as well logs and electromagnetic surveys have been used to explore gas hydrate-bearing formation. The high pressure tomography cell is designed considering the effect of electrode configuration and electrical shielding on tomography measurements and the safety. The evolution of electrical conductivity during $CO_2$ hydrate formation and dissociation reflects the combined effects of concurrent changes that include ionization of dissolved $CO_2$, temperature-dependent ionic mobility, changes in the degree of saturation, ion exclusion, surface conduction, and porosity changes. Measurements during hydrate formation and dissociation require careful analysis to properly interpret signatures, in particular when out-of plane conductivity anomalies prevail.

키워드