Determination of Biot's Effective-Stress Coefficient for Permeability of Nikanassin Sandstone
- L.P. Qiao (University of Calgary) | R.C.K. Wong (University of Calgary) | R. Aguilera (University of Calgary) | A. Kantzas (University of Calgary)
- Document ID
- Society of Petroleum Engineers
- Journal of Canadian Petroleum Technology
- Publication Date
- May 2012
- Document Type
- Journal Paper
- 2012. Society of Petroleum Engineers
- 5.8.1 Tight Gas
- permeability, stress parameter, s effective stress coefficient, Biot&apos, tight gas formation
- 4 in the last 30 days
- 991 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 12.00|
|SPE Non-Member Price:||USD 35.00|
In Alberta and British Columbia, a huge amount of tight gas is trapped inrelatively low-permeability rock formations. Physical fracturing of theseformations could enhance the overall formation permeability and thus improvetight gas extraction. One of the outstanding issues in rock fracturing is todetermine the magnitude of applied effective stress. The generaleffective-stress law is defined as seff =sc - asp, where sc andsp are total confining stress and fluid pore pressure,respectively. Each physical quantity of rock responds to total stress and porepressure in a different way, and thus each quantity has its own unique Biot'seffective-stress coefficient. The main objective of this study is toexperimentally determine the Biot's coefficient for permeability of Nikanassinsandstone. A series of permeability measurements was conducted on Nikanassinsandstone core samples from the Lick Creek region in British Columbia undervarious combinations of confining stress and pore pressure. In addition,permeability values were measured both along and across bedding planes toinvestigate any anisotropy in the Biot's coefficient.
|File Size||766 KB||Number of Pages||5|
Bernabe, Y. 1986. The effective pressure law for permeability in Chelmsfordgranite and Barre granite. International Journal of Rock Mechanics andMining Sciences & Geomechanics Abstracts 23 (3): 267-275.http://dx.doi.org/10.1016/0148-9062(86)90972-1.
Berryman, J.G. 1992. Effective Stress for Transport Properties ofInhomogeneous Porous Rock. J. Geophys. Res. 97 (B12):17,409-17,424. http://dx.doi.org/10.1029/92jb01593.
Biot, M.A. 1941. General theory of three-dimensional consolidation. J.Appl. Phys. 12 (2): 155-164. http://dx.doi.org/10.1063/1.1712886.
Carroll, M.M. 1979. An effective stress law for anisotropic elasticdeformation. J. Geophys. Res. 84 (B13): 7510-7512.
Cheng, A.H.-D. 1997. Material coefficients of anisotropic poroelasticity.International Journal of Rock Mechanics and Mining Sciences &Geomechanics Abstracts 34 (2): 199-205. http://dx.doi.org/10.1016/S0148-9062(96)00055-1.
Garg, S.K. and Nur, A. 1973. Effective Stress Laws for Fluid-SaturatedPorous Rocks. J. Geophys. Res. 78 (26): 5911-5921. http://dx.doi.org/10.1029/JB078i026p05911.
Keaney, G.M., Meredith, P., Murrell, S., and Barker, J. 2004. Determinationof the Effective Stress Laws for Permeability and Specific Storage in a LowPorosity Sandstone. Paper 04-534 presented at Gulf Rocks 2004, the 6th NorthAmerica Rock Mechanics Symposium (NARMS), Houston, 5-9 June.
Robin, P.-Y.F. 1973. Note on Effective Pressure. J. Geophys. Res. 78 (14): 2434-2437. http://dx.doi.org/10.1029/JB078i014p02434.
Rosenthal, L. 1999. Depositional facies and stratigraphic framework of theJurassic-Lower Cretaceous clastic wedge(Fernie/Kootenay/Nikanassin/Blairmore/Mannville Groups), West Central Alberta.Presented at the CSPG and Petroleum Society of CIM Joint Convention, Calgary,14-18 June.
Shafer, J.L., Boitnott, G.N., and Ewy, R.T. 2008. Effective Stress Laws forPetrophysical Rock Properties. Paper 2008-GG presented at the 49th AnnualLogging Symposium, Austin, Texas, USA, 25-28 May.
Solano, N., Zambrano, L. , and Aguilera, R. 2010. Cumulative Gas ProductionDistribution on the Nikanassin Tight Gas Formation, Alberta and BritishColumbia, Canada. Paper SPE 132923 presented at the SPE Trinidad and TobagoEnergy Resources Conference, Port of Spain, Trinidad, 27-30 June. http://dx.doi.org/10.2118/132923-MS.
Terzaghi, K.v. 1924. Die Theorie der hydrodynamischen Spannungserscheinungenund ihr erdbautechnisches Anwendungsgebiet. Proc., First InternationalCongress for Applied Mechanics, Delft, The Netherlands, 22-26 April,288-294.
Terzaghi, K.v. 1936. The shearing resistance of saturated soils and theangle between the planes of shear. Proc., 1st International Conferenceon Soil Mechanics and Foundation Engineering, Cambridge, Massachusetts, USA, 22June, Vol. 1, 54-56.
Walls, J. and Nur, A. 1979. Pore pressure and confining pressure dependenceof permeability in sandstone. Paper O presented at the 7th Formation EvaluationSymposium of the CWLS, Calgary, 5-7 May.
Walsh, J.B. 1981. Effect of pore pressure and confining pressure on fracturepermeability. International Journal of Rock Mechanics and Mining Sciences& Geomechanics Abstracts 18 (5): 429-435. http://dx.doi.org/10.1016/0148-9062(81)90006-1.
Warpinski, N.R. and Teufel, L.W. 1992. Determination of the Effective-StressLaw for Permeability and Deformation in Low-Permeability Rocks. SPE FormEval 7 (2): 123-131. SPE-20572-PA. http://dx.doi.org/10.2118/20572-PA.
Zoback, M.D. and Byerlee, J.D. 1975. Permeability and Effective Stress.AAPG Bull. 59 (1): 154-158.