Rock Properties Evaluation of Tight Gas Reservoir using Geophysical Well Logs in Chimney Butte Field, Wyoming

doi:None

All Issue

2007 Vol.44, Issue 5 Preview Page Next Page

Rock Properties Evaluation of Tight Gas Reservoir using Geophysical Well Logs in Chimney Butte Field, Wyoming 물리 검층 자료를 이용한 와이오밍주 침니 뷰트 필드 내 치밀 가스 저류층의 암석 물성 규명 연구: 손혜라, 이원석, 김현태
Hye-Ra Son, Won-Suk Lee and Hyun-Tae Kim

31 October 2007. pp. 418-427

PDF

Abstract

This paper presents the considerations for evaluating the rock physical properties of the tight gas reservoir using geophysical well logs. The results of estimating rock physical properties from well logs were demonstrated through the comparing with the laboratory core test results of the SFE No.4 well in Chimney Butte field. The effect of clay volume should be applied to estimate porosity and water saturation of the tight gas reservoir, and gamma ray log provide the most reliable measurements of clay volume. It is important to consider gas effect in utilizing density log to obtain reliable bulk density. Furthermore, dynamic elastic modulus, which is a crucial parameter for designing hydraulic fracture and predicting fracture propagation, was calculated using density and sonic logs only, and results were proved reasonable through the comparing with laboratory core tests. The proposed methods for evaluating rock physical properties and dynamic elastic modulus will be effectively utilized in analyzing the field data from tight gas reservoir such as the Chimney Butte field.

Keywords

Tight gas reservoir

Well logs

Dynamic elastic modulus

Clay volume

Gas effect

이 연구에서는 저류층 물성 산출에 사용되는 다양한 물리검층법 중에서 치밀 가스저류층의 암석 물성 규명에 효과적으로 사용될 수 있는 방법을 검토하고 제시하였다. 이를 위해 미국 와이오밍주 침니 뷰트 필드 내 치밀 가스저류층의 자료를 적용하여 코어 실험 결과와 비교하였으며, 물리검층법을 통해 산출한 암석 물성 값의 타당성을 검증하였다. 치밀 가스저류층의 공극률 및 수포화도를 산출할 경우에는 점토광물의 양을 고려해 주어야 하며, 이때 점토광물의 양은 감마선검층을 이용하는 것이 가장 타당함을 확인하였다. 치밀 가스저류층의 밀도검층 자료를 사용할 경우, 실제 체적 밀도 계산에는 가스의 영향에 대한 보정이 필요하다. 수압파쇄는 치밀 가스저류층의 생산성 향상을 위해 필수적으로 요구되는 작업으로, 이의 설계 및 결과를 예측하는데 사용되는 동탄성계수를 음파검층과 밀도검층 자료만을 이용하여 산출하였으며, 코어 실험 값과의 비교를 통해 타당한 결과임을 확인 하였다. 본 연구에서 제시된 치밀 가스저류층의 암석물성 및 동탄성계수 산출방법은 침니 뷰트 필드와 같은 치밀 가스저류층 개발을 위한 현장자료 분석에 효과적으로 이용될 수 있을 것으로 판단된다.

키워드

치밀 가스저류층

물리검층

동탄성계수

점토광물의 양

가스 효과

References

한국석유공사, 2005, “치밀가스저류층 연구,” pp. 94-114.
Anderson, T., and Walker, T., 1972, “Log derived rock properties for use in well stimulation design,” paper SPE 4095 presented at the Fall Meeting of the Society of Petroleum Engineers of AIME, San Antonio, Texas, 8-11 October.
Asquith, G. B., 1990, “Log evaluation of shaly sandstones : a practical guide,” AAPG.
Asquith, G. B., and Gibson, C. R., 1982, “Basic well log analysis for geologists,” AAPG.
Atlas, D., 1979, “Log interpretation charts,” Dreesser Industries, Huston, Texas.
Clavier, C., Coates, G., and Dumanoir, 1977, “The theoretical and experimental basis for the ‘Dual water’ model for the interpretation of shaly sands,” presented at the 52nd Annual Fall Technical Conference and Exhibition of the SPE of AIME, Denver, 9-12 October.
Dewan, J. T., 1983, “Essential of modern open hole log interpretation,” PennWell, pp. 227-236.
Edlmann, K., Somerville, J. M., Hamilton, S. A., and Crawford, B. R., 1998, “Predicting rock mechanical properties from wireline porosities,” paper SPE 47344 presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, Trondheim, Norway, 8-10 July.
Fertl, W. H., 1975, “Well logging method using well logging tools run through a drill stem test string for determining in-situ change in formation water saturation,” Continental oil company.
Gas research institute, 1992, “Application of advanced technologies in tight gas sandstones; Frontier formation, Chimney butte field, Sublette county, Wyoming,” Report No. GRI-92/0394.
Gidley, J. L., Holditch, S. A., Nieride, D. E., and Veatch Jr, R. W., 1989, “Recent advances in hydraulic fracturing,” SPE Monograph Series.
Holditch, S. A., 2006, “Tight gas sands,” Journal of Petroleum Technology, Vol. 58, No. 6, pp. 86-93.
Hunt, E. R., and McCain Jr, W. D., 1997, “Fundamentals of log analysis ; Part 10 : Determining rock mechanical property values from log analysis,” WORLD OIL, October.
John, L., 2006, “Advances in unconventional resources technology; assessment methodology,” SPE Distinguished Lecture.
Kowalski, J., 1972, “Formation strength parameters from well logs,” SPWLA Sisteenth Annual Logging Symposium, 4-7 June.
Kithas, B. A., 1976, “Lithology, gas detection, and rock properties from acoustic logging systems,” paper SPE 6467 presented at the SPE Oklahoma City Regional Meeting, Oklahoma City, Oklahoma, 21-22 February
Simandoux, P., 1963, “Dielectric measurements in porous media; application to the measurement of water saturation,” Revue del’Institute Francais du Petrole, Supplementary Issue.
Tittman, J., and Wahl, J.S., 1965, “The physical foundation of formation density logging (gamma-gamma),” Geophysics, Vol. 30, No. 2, pp. 284-294.
Walls, J. D., 1982, “Tight gas sand-permeability, pore structure, and clay,” Journal of Petroleum Technology, Vol. 34, No. 11, pp. 2708-2714.

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 : 44
No :5
Pages :418-427

[1] 한국석유공사, 2005, “치밀가스저류층 연구,” pp. 94-114.

[2] Anderson, T., and Walker, T., 1972, “Log derived rock properties for use in well stimulation design,” paper SPE 4095 presented at the Fall Meeting of the Society of Petroleum Engineers of AIME, San Antonio, Texas, 8-11 October.

[3] Asquith, G. B., 1990, “Log evaluation of shaly sandstones : a practical guide,” AAPG.

[4] Asquith, G. B., and Gibson, C. R., 1982, “Basic well log analysis for geologists,” AAPG.

[5] Atlas, D., 1979, “Log interpretation charts,” Dreesser Industries, Huston, Texas.

[6] Clavier, C., Coates, G., and Dumanoir, 1977, “The theoretical and experimental basis for the ‘Dual water’ model for the interpretation of shaly sands,” presented at the 52nd Annual Fall Technical Conference and Exhibition of the SPE of AIME, Denver, 9-12 October.

[7] Dewan, J. T., 1983, “Essential of modern open hole log interpretation,” PennWell, pp. 227-236.

[8] Edlmann, K., Somerville, J. M., Hamilton, S. A., and Crawford, B. R., 1998, “Predicting rock mechanical properties from wireline porosities,” paper SPE 47344 presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, Trondheim, Norway, 8-10 July.

[9] Fertl, W. H., 1975, “Well logging method using well logging tools run through a drill stem test string for determining in-situ change in formation water saturation,” Continental oil company.

[10] Gas research institute, 1992, “Application of advanced technologies in tight gas sandstones; Frontier formation, Chimney butte field, Sublette county, Wyoming,” Report No. GRI-92/0394.

[11] Gidley, J. L., Holditch, S. A., Nieride, D. E., and Veatch Jr, R. W., 1989, “Recent advances in hydraulic fracturing,” SPE Monograph Series.

[12] Holditch, S. A., 2006, “Tight gas sands,” Journal of Petroleum Technology, Vol. 58, No. 6, pp. 86-93.

[13] Hunt, E. R., and McCain Jr, W. D., 1997, “Fundamentals of log analysis ; Part 10 : Determining rock mechanical property values from log analysis,” WORLD OIL, October.

[14] John, L., 2006, “Advances in unconventional resources technology; assessment methodology,” SPE Distinguished Lecture.

[15] Kowalski, J., 1972, “Formation strength parameters from well logs,” SPWLA Sisteenth Annual Logging Symposium, 4-7 June.

[16] Kithas, B. A., 1976, “Lithology, gas detection, and rock properties from acoustic logging systems,” paper SPE 6467 presented at the SPE Oklahoma City Regional Meeting, Oklahoma City, Oklahoma, 21-22 February

[17] Simandoux, P., 1963, “Dielectric measurements in porous media; application to the measurement of water saturation,” Revue del’Institute Francais du Petrole, Supplementary Issue.

[18] Tittman, J., and Wahl, J.S., 1965, “The physical foundation of formation density logging (gamma-gamma),” Geophysics, Vol. 30, No. 2, pp. 284-294.

[19] Walls, J. D., 1982, “Tight gas sand-permeability, pore structure, and clay,” Journal of Petroleum Technology, Vol. 34, No. 11, pp. 2708-2714.

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

All Issue