2-D Seismic Navigation Data Acquisition and Quality Control for Deepwater Hydrocarbon Exploration in the Ulleung Basin, East Sea

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2012 Vol.49, Issue 2 Preview Page Next Page

Technical Report

2-D Seismic Navigation Data Acquisition and Quality Control for Deepwater Hydrocarbon Exploration in the Ulleung Basin, East Sea 동해 울릉분지 심해저 유가스전 탄성파탐사 항측 자료취득 및 품질관리: 김영준·정순홍·구남형·김원식·김진호·이호영
Young-Jun Kim, Snons Cheong, Nam-Hyung Koo, Won-Sik Kim, Jin-Ho Kim and Ho-Young Lee

30 April 2012. pp. 210-225

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Abstract

Based on the results of the 1st drilling, the 2nd drilling was performed for gas hydrate resources evaluation and positioning the pilot production in Ulleung basin, East Sea, Korea in 2010. In this study, porosity and gas hydrate saturation are estimated using well logs and core analysis data from UBGH2-2-1, UBGH2-2-2, UBGH2-6, UBGH2-9, UBGH2-10 and UBGH2-11 which have sandy layer containing relatively high gas hydrate distribution. The results show the average porosity of 63.96～71.35% and the average gas hydrate saturation of 3.35～42.23% depending on the estimating methods. In order to estimate reliable gas hydrate saturation, the related parameters should be determined for the patterns of gas hydrate and the characteristics of the target area.

Keywords

Marine seismic survey

Data acquisition

Navigation system

Tamhae II

동해 울릉분지 가스하이드레이트 부존량 평가 및 시험생산위치 선정을 위하여 1차 시추결과를 바탕으로 2010년 2차 시추를 실시하였다. 이 연구에서는 2차 시추지역 중 가스하이드레이트가 함유된 사질층의 분포가 비교적 많이 나타나는 6개 시추공(UBGH2-2-1, UBGH2-2-2, UBGH2-6, UBGH2-9, UBGH2-10, UBGH2-11)에서의 물리검층 및 코어분석 자료를 이용하여 가스하이드레이트 퇴적층의 공극률과 가스하이드레이트포화율을 추정하였다. 그 결과 공극률은 코어분석 자료와 유사하게 63.96～71.35% 범위의 평균값을 추정하였으며, 가스하이드레이포화율은 각 적용기법 별로 평균값이 3.35～42.23% 범위로 나타남을 확인하였다. 가장 적합한 가스하이드레이포화율 값을 계산하기 위해서는 가스하이드레이트의 부존형태, 대상 지역의 특성에 맞는 관련변수 값을 설정하여야 할 것이다.

키워드

해양탄성파탐사

자료취득

항측시스템

탐해2호

References

강동효, 유동근, 박장준, 류병재, 구남형, 김원식, 박관순, 박근필, 김지수, 2009, “동해 울릉분지의 가스하이드레이트 부존형태,” 지질학회지, 제45권 2호, pp. 143-155.
박근필, 2008, “가스하이드레이트 개발,” 한국지구시스템공학회지, 제45권 5호, pp. 590-600.
서광원, 임종세, 이재형, 2010, “울릉분지 1차 시추공 자료를 이용한 가스하이드레이트 퇴적층 물성 추정,” 한국지구시스템공학회지, 제47권 1호, pp. 70-80.
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, 2009, “가스하이드레이트 생산기술 개발현황 및 미래전망,” 한국지구시스템공학회지, 제46권 3호, pp. 387 -401.
이준석, 황철욱, 김재웅, 장광훈, 2010, “국내 동해 가스하이드레이트 시추작업의 기술적 고찰,” 한국지구시스템공학회지, 제47권 6호, pp. 948-955.
한국지질자원연구원, 2010, 가스하이드레이트 개발생산 연구, 지식경제부, GP2010-016-2010(1).
허대기, 2005, “가스하이드레이트 기술개발 현황,” 한국지구시스템공학회지, 제42권 3호, pp. 206-213.
Archie, G.E., 1942, “The electrical resistivity log as an aid in determining some reservoir characteristics,” AIME, Vol. 146, pp. 54-62.
Hyndman, R.D., Yuan, T. and Morgan, K., 1999, “The concentration of deep sea gas hydrates from downhole electrical resistivity logs and laboratory data,” Earth Planet. Sci. Lett., Vol. 172, No. 1, pp. 167-177.
Kumar, D., Dash, R. and Dewangan, P., 2009, “Methods of gas hydrate concentration estimation with field examples,” Geohorizons, Vol. 14, pp. 76-86.
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., 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.
Lee, M. W., 2011, Connectivity Equation and Shaly-Sand Correction for Electrical Resistivity, U.S. Geological Survey, Scientific Investigations Report 2011-5005.
Lysne, P., 1989, “Investigation of Neutron-Porosity Log Uncertainties: Ocean Drilling Program Hole 642E,” Proceedings of the Ocean Drilling Program, Sci. Results, Vol. 104, pp. 973-977.
Montaron, B., 2008, “Connectivity theory – A new approach to modeling “Non-Archie” rocks,” SPWLA 49th Annual Logging Symposium, Edinburgh, Scotland, May 25-28.
Ojha, M., Sain, K. and Minshull, T.A., 2010, “Assement of gas hydrate saturation in the Makran accretionary prism using the offset dependence of seismic amplitude,” Journal of Geophysics, Vol. 75, No. 2, pp. C1-C6.
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.
Prensky, S., 1995, “A review of gas hydrates and formation evaluation of hydrate-bearing reservoirs,” SPWLA 36th Annual Logging Symposium, Paris, France, June 26-29.
Schultheiss, P., Holland, M., Roberts, J. and Humphrey, G., 2008, “Pressure core analysis The keystone of a gas hydrate investigation,” Proceedings of the 6th International Conference on Gas Hydrates, Vancouver, Canada, July 6-10.
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.
Wood, A.B., 1941, A Textbook of Sound, 2nd Ed., MacMillan, New York, U.S.A., p. 578.
Yi, B.Y., Lee, G.H., Horozal, S., Yoo, D.G., Ryu, B.J., Kang, N.K., Lee S.R. and Kim H.J. 2010, “Qualtitaive assessment of gas hydrate and gas concentrations from the AVO characteristics of the BSR in the Ulleung Basin, East Sea(Japan Sea),” Journal of Marine and Petroleum Geology, Vol. 28, No. 10, pp. 1953-1966.

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 : 49
No :2
Pages :210-225

[1] 강동효, 유동근, 박장준, 류병재, 구남형, 김원식, 박관순, 박근필, 김지수, 2009, “동해 울릉분지의 가스하이드레이트 부존형태,” 지질학회지, 제45권 2호, pp. 143-155.

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

[3] 서광원, 임종세, 이재형, 2010, “울릉분지 1차 시추공 자료를 이용한 가스하이드레이트 퇴적층 물성 추정,” 한국지구시스템공학회지, 제47권 1호, pp. 70-80.

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

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

[6] 이정환, 2009, “가스하이드레이트 생산기술 개발현황 및 미래전망,” 한국지구시스템공학회지, 제46권 3호, pp. 387 -401.

[7] 이준석, 황철욱, 김재웅, 장광훈, 2010, “국내 동해 가스하이드레이트 시추작업의 기술적 고찰,” 한국지구시스템공학회지, 제47권 6호, pp. 948-955.

[8] 한국지질자원연구원, 2010, 가스하이드레이트 개발생산 연구, 지식경제부, GP2010-016-2010(1).

[9] 허대기, 2005, “가스하이드레이트 기술개발 현황,” 한국지구시스템공학회지, 제42권 3호, pp. 206-213.

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

[11] Hyndman, R.D., Yuan, T. and Morgan, K., 1999, “The concentration of deep sea gas hydrates from downhole electrical resistivity logs and laboratory data,” Earth Planet. Sci. Lett., Vol. 172, No. 1, pp. 167-177.

[12] Kumar, D., Dash, R. and Dewangan, P., 2009, “Methods of gas hydrate concentration estimation with field examples,” Geohorizons, Vol. 14, pp. 76-86.

[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., 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.

[15] 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.

[16] Lee, M. W., 2011, Connectivity Equation and Shaly-Sand Correction for Electrical Resistivity, U.S. Geological Survey, Scientific Investigations Report 2011-5005.

[17] Lysne, P., 1989, “Investigation of Neutron-Porosity Log Uncertainties: Ocean Drilling Program Hole 642E,” Proceedings of the Ocean Drilling Program, Sci. Results, Vol. 104, pp. 973-977.

[18] Montaron, B., 2008, “Connectivity theory – A new approach to modeling “Non-Archie” rocks,” SPWLA 49th Annual Logging Symposium, Edinburgh, Scotland, May 25-28.

[19] Ojha, M., Sain, K. and Minshull, T.A., 2010, “Assement of gas hydrate saturation in the Makran accretionary prism using the offset dependence of seismic amplitude,” Journal of Geophysics, Vol. 75, No. 2, pp. C1-C6.

[20] 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.

[21] Prensky, S., 1995, “A review of gas hydrates and formation evaluation of hydrate-bearing reservoirs,” SPWLA 36th Annual Logging Symposium, Paris, France, June 26-29.

[22] Schultheiss, P., Holland, M., Roberts, J. and Humphrey, G., 2008, “Pressure core analysis The keystone of a gas hydrate investigation,” Proceedings of the 6th International Conference on Gas Hydrates, Vancouver, Canada, July 6-10.

[23] 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.

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

[25] Yi, B.Y., Lee, G.H., Horozal, S., Yoo, D.G., Ryu, B.J., Kang, N.K., Lee S.R. and Kim H.J. 2010, “Qualtitaive assessment of gas hydrate and gas concentrations from the AVO characteristics of the BSR in the Ulleung Basin, East Sea(Japan Sea),” Journal of Marine and Petroleum Geology, Vol. 28, No. 10, pp. 1953-1966.

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