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A Case Study of Test Production of Gas from Hydrate Bearing Sediments on Nankai Trough in Japan

일본 난카이 해구 가스하이드레이트 퇴적층으로부터의 가스 시험생산 사례분석

  • 김아람 (세종대학교 공과대학 에너지자원공학과) ;
  • 이종원 (세종대학교 공과대학 에너지자원공학과) ;
  • 김형목 (세종대학교 에너지자원공학과)
  • Received : 2015.04.07
  • Accepted : 2015.04.24
  • Published : 2015.04.30

Abstract

Gas hydrate is a solid substance composed of natural gas constrained in water molecules under low temperature and high pressure conditions. The existence of hydrates has been reported to be world-widely distributed, mainly at permafrost and deep ocean floor. Test productions of small amount of natural gas from the on-shore permafrost have been accomplished in U.S.A and Canada, but, world-first and the only production case from off-shore hydrate bearing sediments was in Nankai trough, Japan. In this study, we introduce key technologies in gas production from hydrates by analyzing the Japanese off-shore gas production project in Nankai trough in terms of depressurization- induced dissociation so as to utilize planned domestic gas production test in Ulleung basin.

가스하이드레이트는 천연가스가 저온 고압 상태에서 물과 결합하여 형성되는 고체 물질로 전세계 영구동토 및 심해저 퇴적층에 광범위하게 분포하는 것으로 파악되고 있다. 미국과 캐나다의 육상 영구동토에서 소량의 가스 생산 실증시험 사례가 보고된 바 있으나 심해저 가스하이드레이트로부터의 해상 가스 생산 사례는 일본 난카이 해구에서의 시험 생산이 유일하다. 본 연구에서는 일본 난카이 해구에서 실시된 해저 가스하이드레이트 함유층으로부터 감암법을 이용한 해리 가스 생산 사례를 분석하고 관련 핵심기술을 파악함으로써 국내에서 준비 중인 동해 울릉분지 유망 부지에서의 가스 시험생산에 활용코자 하였다.

Keywords

References

  1. JOGMEC, 2008, "Japan's Methane Hydrate R&D Program ; Phase 1 Conpregensive Report of Reserch Results", August 2008 Edition.
  2. Kim, A.R., Cho, G.C., Kim, S.J., Lee, J.Y., 2014, "Geomechanical response of hydrate-bearing sediments in the Ulleung basin", Proc. 8th Int. Conf. Gas Hydrates, July 2014, Beijing, China.
  3. Kim, H. M., Rutqvist, J., 2014, "Geomechanical model analysis for the evaluation of mechanical stability of unconsolidated sediments during gas hydrate development and production", Tunnel & Underground Space, Vol. 24, No.2, pp. 143-154. https://doi.org/10.7474/TUS.2014.24.2.143
  4. Lee, D.G., Shin, H.J., Lim, J.S., 2013, 3D spatial distribution modeling for petrophysical property of gas hydrate-bearing sediment using well data in Ulleung basin, Journal of Energy Engineering, Vol. 22, No. 2, pp.156-168. https://doi.org/10.5855/ENERGY.2013.22.2.156
  5. Lim, Dae-hee, 2013, "Numerical analysis for prediction of mechanical behavior of marine sediment during depressurization process of gas hydrate", MSc Thesis, Seoul National University.
  6. Qiu, K., Yamamoto, K., Birchwood, R., Chen, Y., 2014, "Well Integrity Evaluation for Methane Hydrate Production in the Deepwater Nankai Trough", International Petroleum Technology Conference, Kuala Lumpur, Malaysia, 10-12 December 2014, IPTC-17792-MS.
  7. Qiu, K., Yamamoto, K., Birchwood, R., Chen, Y., Wu, C., Tan, C.P., Singh, V., 2012, "Evaluation of Fault Reactivation Potential During Offshore Methane Hydrate Production in Nankai Trough, Japan", Offshore Technology Conference, Texas, USA, 30 April-3 May 2012, OTC-22890.
  8. Shin, H.J., Lim, J.S., Kim, S.J., 2012, Estimation of porosity and saturation in gas hydrate bearing sediments using well logs and core analysis data of the 2nd wells in Ulleung basin, East Sea, Korea, J. the Korean Society of Mineral and Energy Resources Engineers, Vol. 49, No. 2, pp.175-185.
  9. Veeken, C.A., Wahleitner, J.p., and Keedy, C.R. 1994. Experimental Modelling of Casing Deformation in a Compacting Reservoir, Eurock SPE/ISRM Rock Mechanics in Petroleum Engineering Conference, Delft, The Netherlands, 29-31 Aug 1994, SPE 28090.
  10. Xu, E., Soga, K., Zhou, M., Yamamoto, K., 2014, "Numerical simulation of wellbore behavior during methane hydrate gas production", Proc. 8th Int. Conf. Gas Hydrates, July 2014, Beijing, China.
  11. Yamamoto, K., 2015, "Overview and introduction: Pressure core-sampling and analyses in the 2012-2013 MH21 offshore test of gas production form methane hydrates in the eastern Nankai Trough", Marine and Petroleum Geology, pp. 1-14.
  12. Yamamoto, K., Terao, Y., Fujii, T., Ikawa, T., Seki, M., Matsuzawa, M., Kanno, T., 2014, "Operational overview of the first offshore production test of methane hydrates in the Eastern Nankai Trough", Offshore Technology Conference, Texas, USA, 5-8 May 2014, OTC-25243-MS.
  13. Zhou, M., Soga, K., Xu, E., Yamamoto, K., 2014, "Numerical Study on the History Matching of Eastern Nankai Trough Hydrate Gas Production Test", Proc. 8th Int. Conf. Gas Hydrates, July 2014, Beijing, China.
  14. 山本晃司, 2014, 海洋生産試験:成果の概要と今後の計畵, メタンハイドレートフォーラム2014, 東京大學 伊藤國際學術センター, 2014.11.25.
  15. 송종우, 송재준, 2015, 가스하이드레이트 생산 시 사질생산 측정을 위한 수치해석모델 개발 및 적용성 연구, 2015 한국암반공학회 춘계학술발표회, 서울대학교 호암컨벤션센터, 2015. 03. 26.

Cited by

  1. Numerical Analysis for Fault Reactivation during Gas Hydrate Production vol.26, pp.2, 2016, https://doi.org/10.7474/TUS.2016.26.2.059