A Study on 3D DFN Model Using 2D Areal Survey and 1D FMI Well Logging

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2009 Vol.46, Issue 6 Preview Page Next Page

A Study on 3D DFN Model Using 2D Areal Survey and 1D FMI Well Logging 2차원 수평균열자료와 1차원 FMI 공검층 수직균열자료를 통합 적용한 3차원 개별균열망 모델 연구: 이영수, 박정균, 서준우, 김기홍, 성원모
Youngsoo Lee, Jungkyoon Park, Junwoo Seo, Kihong Kim and Wonmo Sung

31 December 2009. pp. 711-720

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Abstract

Youngsoo Lee, Jungkyoon Park, Junwoo Seo, Kihong Kim and Wonmo Sung*Abstract : The characterization of fractured reservoir is very important since the fluid in fractured reservoir flows through complex fracture network. Based on the stochastic discrete fracture network (DFN), one of the fractured reservoir description methods, this study developed the 3D discrete fracture network model applied both 2D horizontal fracture data from seismic survey and 1D vertical fracture data from FMI logging. The heterogeneous fractured area was demonstrated using the weighted average method and the combination of 1D vertical FMI log and 2Dhorizontal area survey, and converting to the racture density P32. As a result, for the entire depth, not only the horizontal heterogeneity of the horizontal fracture density, but vertical heterogeneity of the FMI logging data were reflected well. Moreover, 3D discrete fracture network for the fractured reservoir at the Vietnam offshore was created by applying 2D seismic and FMI logging data to examine the applicability of the model. The integration of the seismic data and FMI logs demonstrated the characteristics of fractured reservoir, such as the heterogeneity with more realistic manner.

Keywords

Fractured reservoir

FMI logging

Seismic Lineament map

Weighted Average method

3D DFN model

균열저류층은 주로 복잡한 균열망을 통하여 유체가 유동되므로 균열망의 형태에 대한 특성화 작업은매우 중요하다. 본 연구에서는 균열저류층 묘사방법 중 통계적 개별균열망 생성기법에 기반하여 2차원 수평방향 의 균열자료에 FMI 공검층으로부터 취득된 1차원 수직균열자료를 적용하여 3차원 개별균열망을 생성하는 모델 을 개발하였다. 이 모델에서는 수평, 수직방향에서 취득된 균열밀도를 P32 체적밀도로 각각 변환한 후, 1D 수직균 열밀도 자료에 평균 수평균열밀도자료를 곱하는 가중평균법을 적용하므로서 불균질한 균열밀집 지역 또는 구간 을 효율적으로 표현하고자 하였다. 본 연구에서 개발된 모델이 수평 및 수직방향 균열분포의 불균질성을 효과적 으로 묘사하는지 확인하기 위하여, 2D 수평균열자료와 1D 수직균열자료를 이용하여 3D 개별균열망을 생성하였 다. 그 결과, 전 심도에 걸쳐서 수평자료의 균열밀도를 따라 수평불균질성이 묘사될 뿐만 아니라, FMI 공검층자료 상의 수직불균질성이 효과적으로 반영됨을 확인하였다. 또한, 본 모델의 응용성을 조사하기 위하여 베트남 해상의 균열저류층을 대상으로 2차원 탄성파 탐사자료와 FMI 공검층자료를 토대로 3D 개별균열망을 생성하였다.

키워드

균열저류층

1D FMI 공검층 수직균열자료

2D 탄성파 탐사 수평균열자료

가중평균법

3D 개별균 열망 모델

References

서준우, 이태훈, 이영수, 성원모, 이정환, 2009, “사각균열 형태의 3차원 개별균열망 생성모델 개발,” 한국지구시스템공학회지, 제46권, 3호, pp. 279-288.
Clayton, V.D., 2002, Geostatistical Reservoir Modeling, 1st Ed., Oxford University Press, New York, USA, pp. 182-192.
Dershowitz, W.S., 1985, Rock Joint System, Ph.D. Dissertation, MIT, Cambridge, Massachusetts.
Dershowitz, W.S. and Herda, H.H., 1992, “Interpretation of Fracture Spacing and Intensity,” Proceedings of the 33rd U.S. Symposium on Rock Mechanics, Rotterdam, June 1-4, pp. 757-766.
Goovaerts, P., 1997, Geostatistics for Natural Resources Evaluation, Oxford University Press, New York, USA.
Kazemi, H., Seth, M.S., and Thomas, G.W., 1969, “The Interpretation of Interference Tests in Naturally Fractured Reservoirs with Uniform Fracture Distribution,” SPEJ, Vol. 9, No. 4, pp. 463-472.
Long, J.C.S., Karasiki, K., Davey, A., Peterson, J., Landfeld, M., Kemeny, J., and Martel, S., 1991, “Inverse Approach to the Construction of Fracture Hydrology Models Conditioned by Geophysical Data. An Example from the Validation Exercises at Stripa Mine,” International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, Vol. 28, No. 2-3, pp. 121-142.
Mauldon, M., 1994, “Intersection probabilities of impersistent joints,” International Journal Mechanics and Mining Science & Geomechanics Abstracts, Vol. 31, No. 2, pp. 107-115.
Najurieta, H.L., 1980, “A Theory for Pressure Transient Analysis in Naturally Fractured Reservoirs,” JPT, pp. 1241-1250.
Nelson, R.A., 2001, Geologic Analysis of Naturally Fractured Reservoirs, 2nd Ed., Gulf Professional Publishing, Boston, USA.
Odeh, A.S., 1965, “Unsteady-State Behavior of Naturally Fractured Reservoirs,” SPEJ, Vol. 5. No. 1, pp. 60-66.
Ozkaya, S.I. and Mattner, J., 2003, “Fracture Connectivity From Fracture Intersections in Borihole Image Logs,” Computer & Sciences, Vol. 29, No. 2, pp. 143-155.
Priest, S.D., 1993, Discontinuity Analysis of Rock Engineering, Champman & Hall.
Sung, W.M. and Park, J.H., 2004, “Characterization of Fractured Basement Using Statistical and Fractal Method,” SPE Annual Technical Conference and Exhibition, Houston, Texas, September 26-29, SPE 90337.
Terzaghi, R.D., 1965, “Sources of Errors in Joint Survey,” Geotechinque, Vol. 4, No. 3, pp. 287-304.
Wang, X., 2005, Stereological Interpretation of Rock Fracture Traces on Borehole walls and other Cylindrical Surface, Ph.D. Dissertation, Virginia Polytechnic Institute & State University.
Warren, J.E. and Root, P.J., 1963, “The Behavior of Naturally Fractured Reservoirs,” SPEJ, Vol. 3, No. 3, pp. 245-255.

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 : 46
No :6
Pages :711-720

[1] 서준우, 이태훈, 이영수, 성원모, 이정환, 2009, “사각균열 형태의 3차원 개별균열망 생성모델 개발,” 한국지구시스템공학회지, 제46권, 3호, pp. 279-288.

[2] Clayton, V.D., 2002, Geostatistical Reservoir Modeling, 1st Ed., Oxford University Press, New York, USA, pp. 182-192.

[3] Dershowitz, W.S., 1985, Rock Joint System, Ph.D. Dissertation, MIT, Cambridge, Massachusetts.

[4] Dershowitz, W.S. and Herda, H.H., 1992, “Interpretation of Fracture Spacing and Intensity,” Proceedings of the 33rd U.S. Symposium on Rock Mechanics, Rotterdam, June 1-4, pp. 757-766.

[5] Goovaerts, P., 1997, Geostatistics for Natural Resources Evaluation, Oxford University Press, New York, USA.

[6] Kazemi, H., Seth, M.S., and Thomas, G.W., 1969, “The Interpretation of Interference Tests in Naturally Fractured Reservoirs with Uniform Fracture Distribution,” SPEJ, Vol. 9, No. 4, pp. 463-472.

[7] Long, J.C.S., Karasiki, K., Davey, A., Peterson, J., Landfeld, M., Kemeny, J., and Martel, S., 1991, “Inverse Approach to the Construction of Fracture Hydrology Models Conditioned by Geophysical Data. An Example from the Validation Exercises at Stripa Mine,” International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, Vol. 28, No. 2-3, pp. 121-142.

[8] Mauldon, M., 1994, “Intersection probabilities of impersistent joints,” International Journal Mechanics and Mining Science & Geomechanics Abstracts, Vol. 31, No. 2, pp. 107-115.

[9] Najurieta, H.L., 1980, “A Theory for Pressure Transient Analysis in Naturally Fractured Reservoirs,” JPT, pp. 1241-1250.

[10] Nelson, R.A., 2001, Geologic Analysis of Naturally Fractured Reservoirs, 2nd Ed., Gulf Professional Publishing, Boston, USA.

[11] Odeh, A.S., 1965, “Unsteady-State Behavior of Naturally Fractured Reservoirs,” SPEJ, Vol. 5. No. 1, pp. 60-66.

[12] Ozkaya, S.I. and Mattner, J., 2003, “Fracture Connectivity From Fracture Intersections in Borihole Image Logs,” Computer & Sciences, Vol. 29, No. 2, pp. 143-155.

[13] Priest, S.D., 1993, Discontinuity Analysis of Rock Engineering, Champman & Hall.

[14] Sung, W.M. and Park, J.H., 2004, “Characterization of Fractured Basement Using Statistical and Fractal Method,” SPE Annual Technical Conference and Exhibition, Houston, Texas, September 26-29, SPE 90337.

[15] Terzaghi, R.D., 1965, “Sources of Errors in Joint Survey,” Geotechinque, Vol. 4, No. 3, pp. 287-304.

[16] Wang, X., 2005, Stereological Interpretation of Rock Fracture Traces on Borehole walls and other Cylindrical Surface, Ph.D. Dissertation, Virginia Polytechnic Institute & State University.

[17] Warren, J.E. and Root, P.J., 1963, “The Behavior of Naturally Fractured Reservoirs,” SPEJ, Vol. 3, No. 3, pp. 245-255.

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

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