Abstract
Reservoir characterization is a process of describing various reservoir properties using all the available data to provide reliable reservoir models for accurate reservoir performance prediction. This process requires the use of proper methods for characterization to avoid many prominent errors in the prediction of reservoir performance. Fluid substitution is an important process which provides a tool for fluid identification and quantification in a reservoir. In the present study, petrophysical, cross-plot and Gassmann fluid substitution analysis is applied for the characterization of reservoir of Fimkassar area, Pakistan. The data used for this purpose consist of suite of wireline logs from two wells and laboratory data showing typical rock properties for water-saturated limestone. Our results show that cross-plot analysis performed in this study can provide a qualitative method for the identification of type (water or hydrocarbons) of fluid present within the reservoir. The results of Gassmann fluid substitution at Sakesar limestone level indicate variation in acoustic properties (velocity and density) at different water saturation levels which can be modeled in terms of synthetic seismograms and may help in determining future optimum well locations.
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References
Kamel M.H., Mabrouk W.M.: An equation for estimating water saturation in clean formations utilizing resistivity and sonic logs: theory and application. J. Pet. Sci. Eng. 36(3), 159–168 (2002)
Dandekar A.Y.: Petroleum Reservoir Rock and Fluid Properties. CRC Press, Boca Raton (2013)
Alimoradi A., Moradzadeh A., Bakhtiari M.R.: Methods of water saturation estimation: historical perspective. J. Pet. Gas Eng. 2(3), 45–53 (2011)
Asquith G.B., Krygowski D., Gibson C.R.: Basic Well Log Analysis. American Association of Petroleum Geologists, Tulsa (2004)
Han D.H.: Effects of porosity and clay content on wave velocities in sandstones. Geophysics 51, 2093–2107 (1986)
Zhu, X.; McMechan, G.A.: Direct estimation of the bulk modulus of the frame in fluid saturated elastic medium by Biot theory. In: 60th Annual International Meeting, Society of Exploration Geophysics, Expanded Abstract, pp. 787–790 (1990)
Russell B.R., Hedlin K., Hilterman F.J., Lines L.R.: Fluid-property discrimination with AVO: a Biot-Gassmann perspective. Geophysics 68, 29–39 (2003)
Smith T.M., Sondergeld C.H., Rai C.S.: Gassmann fluid substitutions: a tutorial. Geophysics 68, 430–440 (2003)
Han D.H., Batzle M.L.: Gassmann’s equation and fluid-saturation effects on seismic velocities. Geophysics 69, 398–405 (2004)
Avseth P., Mukerji T., Mavko G.: Quantitative Seismic Interpretation: Applying Rock Physics Tools to Reduce Interpretation Risk. Cambridge University Press, Cambridge (2005)
Kumar, D.: A tutorial on Gassmann fluid substitution: formulation, algorithm and Matlab code. Geohorizons, pp. 4–12 (2006)
Mavko G., Mukerji T., Dvorkin J.: The Rock Physics Handbook, Tools for Seismic Analysis in Porous Media. Cambridge University Press, Cambridge (2009)
Gassmann F.: Uber die elastizität poröser medien. Vierteljahrsschriftder Naturforschenden Gesellschaft in Zürich 96, 1–23 (1951)
Artola F.A., Alvarado V.: Sensitivity analysis of Gassmann’s fluid substitution equations: some implications in feasibility studies of time-lapse seismic reservoir monitoring. J. Appl. Geophys. 59(1), 47–62 (2006)
Nguyen P.K., Nam M.J.: A review on methods for constructing rock physics model of saturated reservoir rock for time-lapse seismic. Geosyst. Eng. 14(2), 95–107 (2011)
Aamir, M.; Siddiqui, M.M.: Interpretation and visualization of thrust sheets in a triangle zone in Eastern Potwar, Pakistan. Lead. Edge 25(1), 24–37 (2006)
Kazmi, A.H.; Rana, R.A.: Tectonic map of Pakistan. Geological Survey of Pakistan (1982)
Asquith, G.; Gibson, C.: Basic well log analysis for geologists. AAPG (1982)
Bateman R.M.: Open-Hole Log Analysis and Formation Evaluation. IHRDC Publishers, Boston (1985)
Schlumberger: Log Interpretation Principles/Applications. Schlumberger Educational Services (1991)
Rider, M.H.: The Petrophysical Interpretation of Well Logs. Rider-French Consulting Ltd., pp. 42–66 (2002)
Kuster G.T., Toksoz M.N.: Velocity and attenuation of seismic waves in two-phase media: Part 1. Theoretical formulations. Geophysics 39, 587–606 (1974)
Dvorkin J., Nur A., Yin H.: Effective properties of cemented granular materials. Mech. Mater. 18, 351–366 (1994)
Dvorkin J., Nur A.: Elasticity of high-porosity sandstones: theory for two North Sea datasets. Geophysics 61, 1363–1370 (1996)
Dvorkin J., Moos D., Packwood J., Nur A.: Identifying patchy saturation from well logs. Geophysics 64, 1756–1759 (1999)
Avseth P., Mukerji T., Jorstad A., Mavko G., Veggeland T.: Seismic reservoir mapping from 3-D AVO in a North Sea turbidite system. Geophysics 66, 1157–1176 (2001)
Misaghi A., Negahban S., Landrø M., Javaherian A.: A comparison of rock physics models for fluid substitution in carbonate rocks. Explor. Geophys. 41, 146–154 (2010)
Berryman J., Berge P., Bonner B.: Estimating rock porosity and fluid saturation using only seismic velocities. Geophysics 67, 391–404 (2002)
Pickett G.R.: Acoustic character logs and their application in formation evaluation. J. Pet. Technol. 15, 650–667 (1963)
Wood A.W.: A Textbook of Sound. The Macmillan Co., New York (1955)
Batzle M.L., Wang Z.: Seismic properties of pore fluids. Geophysics 64, 1396–1408 (1992)
Lucet, N.: Vitesse et Attenuation des Ondes E’lastiques Soniques et Ultrasoniques dans les Roches sous Pression de Confinement. Ph.D. dissertation, University of Paris (1989)
Cadoret, T.: Effet de la Saturation Eau/Gaz sur les Proprie’te’s Acoustiques des Roches. Ph.D. dissertation, University of Paris, VII (1993)
Yale, D.P.; Jameison, W.H.: Static and dynamic rock mechanical properties in the Hugoton and Panoma fields. Kansas Society of Petroleum Engineers, Paper 27939, Society of Petroleum Engineers Mid-Continent Gas Symposium, Amarillo, TX, May (1994)
Gue’guen Y., Palciauskas V.: Introduction to the Physics of Rocks. Princeton University Press, Princeton (1994)
Wang Z.: Fundamentals of seismic rock physics. Geophysics 66, 398–412 (2001)
Adam L., Batzle M.: Elastic properties of carbonates from laboratory measurements at seismic and ultrasonic frequencies. Lead. Edge 27, 1026–1032 (2008)
Baechle G.T., Weger R.J., Eberli G.P., Massaferro J.L., Sun Y.F.: Changes of shear moduli in carbonate rocks: implications for Gassmann applicability. Lead. Edge 24, 507–510 (2005)
Wyllie M.R.J., Gardner G.H.F., Gregory A.R.: Addendum to ‘Studies of elastic wave attenuation in porous media’. Geophysics 28, 1074 (1963)
Berryman J.G.: Origin of Gassmann’s equations. Geophysics 64, 1627–1629 (1999)
Japsen, P.; Høier, C.; Rasmussen, K.B.; Fabricius, I.L.; Mavko, G.; Pedersen, J.M.: Effect of fluid substitution on ultrasonic velocities in chalk plugs, South Arne field, North Sea. In: 72nd SEG Annual Meeting, pp. 1181–1184 (2002)
Adam L., Batzle M., Brevik I.: Gassmann’s fluid substitution and shear modulus variability in carbonates at laboratory seismic and ultrasonic frequencies. Geophysics 71, F173–F183 (2006)
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Ali, A., Kashif, M., Hussain, M. et al. An Integrated Analysis of Petrophysics, Cross-Plots and Gassmann Fluid Substitution for Characterization of Fimkassar Area, Pakistan: A Case Study. Arab J Sci Eng 40, 181–193 (2015). https://doi.org/10.1007/s13369-014-1500-1
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DOI: https://doi.org/10.1007/s13369-014-1500-1