Estimation of Petrophysical Properties in Gas Hydrate Bearing Sediments using the 1st Well Data in Ulleung Basin, Offshore Korea

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2010 Vol.47, Issue 1 Preview Page Next Page

Estimation of Petrophysical Properties in Gas Hydrate Bearing Sediments using the 1st Well Data in Ulleung Basin, Offshore Korea 울릉분지 1차 시추공 자료를 이용한 가스하이드레이트 퇴적층 물성 예측: 서광원 , 임종세 , 이재형
Kwangwon Seo, Jong-Se Lim and Jaehyung Lee

28 February 2010. pp. 70-80

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Abstract

In 2007, the 1st drilling was performed at the location having high potential as a gas hydrate bearing sediments in Ulleung basin, Korean East Sea. Well log data were obtained from 5 wells and core data were procured from 3 wells, UBGH1-04, UBGH1-09 and UBGH1-10. In this study, petrophysical properties are estimated using well data from UBGH1-04, UBGH1-09 and UBGH1-10. Porosity is estimated by density log and gas hydrate saturation is calculated by sonic log and resistivity log. Estimated porosity and estimated gas hydrate saturation match well with core porosity and core gas hydrate saturation, respectively. Sedimentary facies are estimated by applying the linear discriminant analysis using both well log and sedimentary facies data from core analysis.

Keywords

Ulleung basin

Well data

Porosity

Gas hydrate saturation

Sedimentary facies

2007년 동해 울릉분지의 가스하이드레이트 부존 유망 지역에 대하여 1차 시추를 수행하여 총 5개의 시추공으로부터 물리검층 자료를 취득하였으며, 이중 UBGH1-04, UBGH1-09, UBGH1-10 시추공에서 코어 자료 를 취득하였다. 이 연구에서는 UBGH1-04, UBGH1-09, UBGH1-10 시추공에서 취득한 시추공 자료를 이용하여 가스하이드레이트 퇴적층의 물성을 예측하였다. 밀도 검층 자료를 사용하여 공극률을 예측하였으며, 전기비저항 검층 및 음파 검층을 이용하여 가스하이드레이트의 포화율을 예측하였다. 공극률 예측 결과와 가스하이드레이트 의 포화율 예측 결과가 코어의 공극률 및 코어 가스하이드레이트 포화율의 이상치 구간과 유사한 경향을 나타냄 을 확인하였다. 또한 물리검층 자료와 코어의 퇴적상 분석 자료를 이용하여 선형 판별 분석 기법을 통해 퇴적상 을 예측하였다.

키워드

울릉분지

시추공 자료

공극률

가스하이드레이트 포화율

퇴적상

References

박근필, 2008, “가스하이드레이트 개발,” 한국지구시스템공학회지, 제45권 5호, pp. 590-600.
이동건, 이주용, 이재형, 2009, “다공성 매질에서 가스하이드레이트 치환생산기법 이용 시 배가스 주입유속 효과에 대한 실험적 연구,” 한국지구시스템공학회지, 제46권 1호, pp. 79-86.
이재형, 김현태, 허대기, 류병재, 2004, “다공성 매질에서 주입유속에 따른 메탄 하이드레이트 생성조건,” 한국지구시스템공학회지, 제41권 2호, pp. 118-124.
이정환, 박승수, 주우성, 신창훈, 이영수, 2009, “에너지자원으로서의 가스하이드레이트 개발가능성 및 가치,” 한국지구시스템공학회지, 제46권 4호, pp. 490-497.
한국지질자원연구원, 2008, 가스하이드레이트 심부시추시료 분석 및 안정성･지질재해 연구, 지식경제부, NP2008-003-2008(1).
Akihisa, K., Tezuka, K., Senoh, O., and Uchida, T., 2002, “Well log evaluation of gas hydrate saturation in the MITI Nankai-trough well, offshore south east Japan,” paper BB presented at the SPWLA 43rd Annual Logging Symposium, Oiso, Japan, June 2-5.
Archie, G.E., 1942, “The electrical resistivity log as an aid in determining some reservoir characteristics,” AIME, Vol. 146, pp. 54-62.
Castagna, J.P., Batzle, M.L., and Eastwood, R.L., 1985, “Relationship between compressional-wave and shear-wave velocities in clastic silicate rocks,” Journal of Geophysics, Vol. 50, No. 4, pp. 571-581.
Eberhart-Phillips, D., Han, D.H., and Zoback, M.D., 1989, “Empirical relationships among seismic velocity, effective pressure, porosity, and clay content in sandstone,” Journal of Geophysics, Vol. 54, No. 1, pp. 82-89.
Fisher, R.A., 1938, “The Statistical Utilization of Multiple Measurements,” Annals of Eugenics, Vol. 8, pp. 376-386.
Jose, M.C. and Davide, G., 2004, “Gas-hydrate concentration estimated from P- and S-wave velocities at the Mallik 2L-38 research well, Mackenzie Delta, Canada,” Journal of Applied Geophysics, Vol. 56, No. 1, pp. 73-78.
Lee, M.W., Hutchinson, D.R., Dillon, W.P., Miller, J.J., Agena, W.F., and Swift, B.A., 1993, “Method of estimating the amount of in situ gas hydrate in deep marine sediments,” Journal of Marine and Petroleum Geology, Vol. 10, No. 5, pp. 493-506.
Lee, M.W., Hutchinson, D.R., Collett, T.S., and Dillon, W.P., 1996, “Seismic velocities for hydrate-bearing sediments using weighted equation,” Journal of Geophysical Research, Vol. 101, No. B9, pp. 20347-20358.
Lee, M.W. and Collett, T.S., 2005, “Assessments of gas hydrate concentrations estimated from sonic logs in the JAPEX/JNOC/GSC et al. Mallik 5L-38 gas hydrate research production well,” Geological Survey of Canada Bulletin, Vol. 585, p. 10.
Lee, M.W. and Collett, T.S., 2006, A method of shaly sand correction for estimating gas hydrate saturations using downhole electrical resistivity log data, U.S. Geological Survey, Scientific Investigations Report 2006-5121.
Lee, M.W. and Collett, T.S., 2009, “In-situ gas hydrate saturations estimated from various well logs at the Mount Elbert well, Alaska North Slope,” Journal of Marine and Petroleum Geology, Vol. 30, No. 7, pp. 1-11.
Pearson, C.F., Halleck, P.M., McGuire, P.L., Hermes, R., and Mathoew, M., 1983, “Natural gas hydrate deposit: A review of in-situ properties,” Journal of Physical Chemistry, Vol. 87, No. 21, pp. 4180-4185.
Pickett, G.R., 1966, “A Review of Current Techniques for Determination of Water Saturation from Logs,” Journal of Petroleum Technology, Vol. 18, No. 1, pp. 1425-1433.
Simandoux, P., 1963, “Dielectric measurements in porous media and application to shaly formation,” Revue de L’Institut Francais du Petrole, Vol. 18, Supplementary Issue, pp. 193-215.
Timur, A., 1968, “Velocity of compressional waves in porous media at permafrost temperature,” Journal of Geophysics, Vol. 33, No. 4, pp. 584-595.
Wood, A.B., 1941, A Textbook of Sound, 2nd Ed., MacMillan, New York, U.S.A., p. 578.
Wyllie, M.R.J., Gregory, A.R., and Gardner, G.H.F., 1958, “An experimental investigation of factors affecting elastic wave velocities in porous media,” Journal of Geophysics, Vol. 23, No. 3, pp. 459-493.

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 : 47
No :1
Pages :70-80

[1] 박근필, 2008, “가스하이드레이트 개발,” 한국지구시스템공학회지, 제45권 5호, pp. 590-600.

[2] 이동건, 이주용, 이재형, 2009, “다공성 매질에서 가스하이드레이트 치환생산기법 이용 시 배가스 주입유속 효과에 대한 실험적 연구,” 한국지구시스템공학회지, 제46권 1호, pp. 79-86.

[3] 이재형, 김현태, 허대기, 류병재, 2004, “다공성 매질에서 주입유속에 따른 메탄 하이드레이트 생성조건,” 한국지구시스템공학회지, 제41권 2호, pp. 118-124.

[4] 이정환, 박승수, 주우성, 신창훈, 이영수, 2009, “에너지자원으로서의 가스하이드레이트 개발가능성 및 가치,” 한국지구시스템공학회지, 제46권 4호, pp. 490-497.

[5] 한국지질자원연구원, 2008, 가스하이드레이트 심부시추시료 분석 및 안정성･지질재해 연구, 지식경제부, NP2008-003-2008(1).

[6] Akihisa, K., Tezuka, K., Senoh, O., and Uchida, T., 2002, “Well log evaluation of gas hydrate saturation in the MITI Nankai-trough well, offshore south east Japan,” paper BB presented at the SPWLA 43rd Annual Logging Symposium, Oiso, Japan, June 2-5.

[7] Archie, G.E., 1942, “The electrical resistivity log as an aid in determining some reservoir characteristics,” AIME, Vol. 146, pp. 54-62.

[8] Castagna, J.P., Batzle, M.L., and Eastwood, R.L., 1985, “Relationship between compressional-wave and shear-wave velocities in clastic silicate rocks,” Journal of Geophysics, Vol. 50, No. 4, pp. 571-581.

[9] Eberhart-Phillips, D., Han, D.H., and Zoback, M.D., 1989, “Empirical relationships among seismic velocity, effective pressure, porosity, and clay content in sandstone,” Journal of Geophysics, Vol. 54, No. 1, pp. 82-89.

[10] Fisher, R.A., 1938, “The Statistical Utilization of Multiple Measurements,” Annals of Eugenics, Vol. 8, pp. 376-386.

[11] Jose, M.C. and Davide, G., 2004, “Gas-hydrate concentration estimated from P- and S-wave velocities at the Mallik 2L-38 research well, Mackenzie Delta, Canada,” Journal of Applied Geophysics, Vol. 56, No. 1, pp. 73-78.

[12] Lee, M.W., Hutchinson, D.R., Dillon, W.P., Miller, J.J., Agena, W.F., and Swift, B.A., 1993, “Method of estimating the amount of in situ gas hydrate in deep marine sediments,” Journal of Marine and Petroleum Geology, Vol. 10, No. 5, pp. 493-506.

[13] Lee, M.W., Hutchinson, D.R., Collett, T.S., and Dillon, W.P., 1996, “Seismic velocities for hydrate-bearing sediments using weighted equation,” Journal of Geophysical Research, Vol. 101, No. B9, pp. 20347-20358.

[14] Lee, M.W. and Collett, T.S., 2005, “Assessments of gas hydrate concentrations estimated from sonic logs in the JAPEX/JNOC/GSC et al. Mallik 5L-38 gas hydrate research production well,” Geological Survey of Canada Bulletin, Vol. 585, p. 10.

[15] Lee, M.W. and Collett, T.S., 2006, A method of shaly sand correction for estimating gas hydrate saturations using downhole electrical resistivity log data, U.S. Geological Survey, Scientific Investigations Report 2006-5121.

[16] Lee, M.W. and Collett, T.S., 2009, “In-situ gas hydrate saturations estimated from various well logs at the Mount Elbert well, Alaska North Slope,” Journal of Marine and Petroleum Geology, Vol. 30, No. 7, pp. 1-11.

[17] Pearson, C.F., Halleck, P.M., McGuire, P.L., Hermes, R., and Mathoew, M., 1983, “Natural gas hydrate deposit: A review of in-situ properties,” Journal of Physical Chemistry, Vol. 87, No. 21, pp. 4180-4185.

[18] Pickett, G.R., 1966, “A Review of Current Techniques for Determination of Water Saturation from Logs,” Journal of Petroleum Technology, Vol. 18, No. 1, pp. 1425-1433.

[19] Simandoux, P., 1963, “Dielectric measurements in porous media and application to shaly formation,” Revue de L’Institut Francais du Petrole, Vol. 18, Supplementary Issue, pp. 193-215.

[20] Timur, A., 1968, “Velocity of compressional waves in porous media at permafrost temperature,” Journal of Geophysics, Vol. 33, No. 4, pp. 584-595.

[21] Wood, A.B., 1941, A Textbook of Sound, 2nd Ed., MacMillan, New York, U.S.A., p. 578.

[22] Wyllie, M.R.J., Gregory, A.R., and Gardner, G.H.F., 1958, “An experimental investigation of factors affecting elastic wave velocities in porous media,” Journal of Geophysics, Vol. 23, No. 3, pp. 459-493.

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