The Feasibility Study for CO2 Sequestration into Deep Saline Aquifer at Gorae-V Structure in Korea

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2008 Vol.45, Issue 4 Preview Page Next Page

The Feasibility Study for CO2 Sequestration into Deep Saline Aquifer at Gorae-V Structure in Korea 국내 대륙붕 고래 V 구조 대염수층에의 CO2 저장 타당성 분석 연구: 이영수, 박용찬, 권순일, 성원모
Young-Soo Lee, Yong-Chan Park, Sun-Il Kwon and Won-Mo Sung

31 August 2008. pp. 381-393

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Abstract

This paper presents the numerical modelling study to investigate the feasibility of CO2 sequestion in deep saline aquifer at Gorae-V structure, Korea. This structure includes the Donghae-1 gas field which is the only one on producing in Korea and the CO2 injection simulation was conducted on B3/B4 layers which have relatively good values of both porosity and permeability in Gorae-V structure. The NE section of the formation is bounded by fault as a no-flow boundary, while SW boundary of the system is assigned as a constant pressure boundary representing the extension of the aquifer. A simulation for 30 years of injection and 2000 years of monitoring was conducted by using TOUGH2/ECO2N which can simulate the flow of the CO2-NaCl-water mixture to verify a major trapping mechanisms and injection/sequestration characteristics in this system. By a number of simulations in reservoir condition, the optimum injection rate was obtained within the limits of the rock fracturing pressure and a change of dominant trapping mechanism among structural, solubility and residual trapping mechanism with time was examined. Finally, if water pumping well is added beside the CO2 injection well, average pressure could be lowered and therefore injection rates can be increased in this system.

Keywords

saline aquifer

trapping mechanism

optimum injection rate

water pumping well

본 연구에서는 국내 대륙붕 제 6-1 광구내 고래 V 구조의 CO2 저장 타당성을 조사하기 위한 시뮬레이션 연구를 수행하였다. 이 구조는 국내 유일의 생산광구인 동해-1 가스전을 포함하고 있으며, 총 5개의 층 중에서 투과도와 공극율이 양호한 B4/B4층을 대상으로 CO2를 주입하였고 구조의 북동 방향은 단층으로 주변과 단절, 남서방향은 대염수층으로 연장되어 있는 구조이다. 본 구조의 주요한 CO2 격리메커니즘 확인과 주입 및 저장특성을 살펴보기 위해 물-염분-CO2의 유동을 모사할 수 있는 TOUGH2/ECO2N 모델을 사용하여 30년간 주입하고 2000년간 모니터링하는 시뮬레이션을 수행하였다. 저류층 조건하에서의 암석파괴압력을 조사하여 이를 초과하지 않는 범위에서의 적정주입량을 산출하고, 시간에 따른 구조트랩, 용해트랩, 잔류트랩간의 주요 격리메카니즘의 변화양상을 관찰하였다. 또한 주입량 증대를 위한 물펌핑정 시뮬레이션을 수행한 결과, CO2 주입정과 함께 물펌핑정을 설치하게 되면 저류층 압력을 낮출 수 있어 주입량을 증대시킬 수 있을 것으로 예측되었다.

키워드

대염수층

격리 메카니즘

적정주입량

물펌핑정

References

손혜윤, 권순일, 성원모, 2006, “심부피압대염수층에의 이산화탄소 격리에 대한 해석적 연구,” 한국지구시스템공학회지, Vol. 43, No. 4, pp. 275-281.
이영수, 최해원, 이정환, 한정민, 류상수, 노정용, 성원모, 2007, “고갈가스전에의 적정 가스저장시스템 분석을 위한 시뮬레이션 연구,” 한국화학공학회지, Vol. 45, No. 5, pp. 514-522.
Coats, K. H., 1977, “Geothermal Reservoir modeling,” SPE 6892, presented at the Annual Technical Conference and Exhibition of the Society of Petroleum Engineers, Denver, Colorado, October 9-12.
House, N. J., Faulder, D. D., Olson, G. L. and Fanchi., J. R., 2003, “Simulation study of CO2 Sequestration in a North Sea formation,” SPE 81202, presented at the SPE/EPA/DOE Exploration and Production Environmental Conference, San Antonio, Texas, March 10-12.
IEA (International Energy Agency)., 2004, Prospects for CO2 Capture and Storage, OECD/IEA, Paris, France, p. 249.
Kumar, A., Noh, M., Pope, G. A., Sepehrnoori K., Bryant, S. and Lake, L. W., 2004, “Reservoir simulation of CO2 stroage in deep saline aquifers,” SPE 89343, presented at the SPE/DOE Fourteenth Symposium on Improved Oil Recovery, Tulsa, Oklahoma, April 17-21.
Law, D. H. and Bachu, S., 1996, “Hydrogeological and Numerical Analysis of CO2 Disposal in Deep Aquifers in the Alberta Sedimentary Basin,” Energy Convers. Mgmt, Vol. 37, pp. 1167-1174.
Metz, B., Davidson, O., Coninck, H. C., Loos, M. and Mayer, L. A., 2005, IPCC (Intergovernmental Panel on Climate Change) Special Report on Carbon Dioxide Capture and Stroage, Cambridge University Press, Cambridge, U.K., and New York, NY, U.S.A., p. 442.
Pruess, K. and Spycher, N., 2006, “ECO2N-A new TOUGH2 fluid property module for studies of CO2 storage in saline aquifers,” TOUGH Symposium, LBNL, Berkeley, California, May 1-4.
Pruess, K., Xu, T., Apps, J. and Garcia, J., 2001, “Numerical modeling of aquifer disposal of CO2,” SPE 66537, presented at the SPE/EPA/DOE Exploration and Production Environmental Conference, San Antonio, Texas, February 26-28.
Sengul, M., 2006, “CO2-Sequestration-A safe transition technology,” SPE 98617, presented at the SPE International Health, Safety & Environment Conference, Abu Dhabi, UAE, April 2-4.
Watson, R. T. and the Core Writing Team, 2001, Climate Change 2001: Synthesis Report, Cambridge University Press, Cambridge, U.K., and New York, NY, U.S.A., p. 397.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society for Geosystem Engineering
Journal Title(Ko) :한국지구시스템공학회지
Volume : 45
No :4
Pages :381-393

[1] 손혜윤, 권순일, 성원모, 2006, “심부피압대염수층에의 이산화탄소 격리에 대한 해석적 연구,” 한국지구시스템공학회지, Vol. 43, No. 4, pp. 275-281.

[2] 이영수, 최해원, 이정환, 한정민, 류상수, 노정용, 성원모, 2007, “고갈가스전에의 적정 가스저장시스템 분석을 위한 시뮬레이션 연구,” 한국화학공학회지, Vol. 45, No. 5, pp. 514-522.

[3] Coats, K. H., 1977, “Geothermal Reservoir modeling,” SPE 6892, presented at the Annual Technical Conference and Exhibition of the Society of Petroleum Engineers, Denver, Colorado, October 9-12.

[4] House, N. J., Faulder, D. D., Olson, G. L. and Fanchi., J. R., 2003, “Simulation study of CO2 Sequestration in a North Sea formation,” SPE 81202, presented at the SPE/EPA/DOE Exploration and Production Environmental Conference, San Antonio, Texas, March 10-12.

[5] IEA (International Energy Agency)., 2004, Prospects for CO2 Capture and Storage, OECD/IEA, Paris, France, p. 249.

[6] Kumar, A., Noh, M., Pope, G. A., Sepehrnoori K., Bryant, S. and Lake, L. W., 2004, “Reservoir simulation of CO2 stroage in deep saline aquifers,” SPE 89343, presented at the SPE/DOE Fourteenth Symposium on Improved Oil Recovery, Tulsa, Oklahoma, April 17-21.

[7] Law, D. H. and Bachu, S., 1996, “Hydrogeological and Numerical Analysis of CO2 Disposal in Deep Aquifers in the Alberta Sedimentary Basin,” Energy Convers. Mgmt, Vol. 37, pp. 1167-1174.

[8] Metz, B., Davidson, O., Coninck, H. C., Loos, M. and Mayer, L. A., 2005, IPCC (Intergovernmental Panel on Climate Change) Special Report on Carbon Dioxide Capture and Stroage, Cambridge University Press, Cambridge, U.K., and New York, NY, U.S.A., p. 442.

[9] Pruess, K. and Spycher, N., 2006, “ECO2N-A new TOUGH2 fluid property module for studies of CO2 storage in saline aquifers,” TOUGH Symposium, LBNL, Berkeley, California, May 1-4.

[10] Pruess, K., Xu, T., Apps, J. and Garcia, J., 2001, “Numerical modeling of aquifer disposal of CO2,” SPE 66537, presented at the SPE/EPA/DOE Exploration and Production Environmental Conference, San Antonio, Texas, February 26-28.

[11] Sengul, M., 2006, “CO2-Sequestration-A safe transition technology,” SPE 98617, presented at the SPE International Health, Safety & Environment Conference, Abu Dhabi, UAE, April 2-4.

[12] Watson, R. T. and the Core Writing Team, 2001, Climate Change 2001: Synthesis Report, Cambridge University Press, Cambridge, U.K., and New York, NY, U.S.A., p. 397.

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

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