Affiliation:
1. Stanford University, Department of Geophysics, Stanford, California, U.S.A. .
Abstract
Laboratory data supported by granular-medium and inclusion theories indicate that Poisson’s ratio in gas-saturated sand lies within a range of 0–0.25, with typical values of approximately 0.15. However, some well log measurements, especially in slow gas formations, persistently produce a Poisson’s ratio as large as 0.3. If this measurement is not caused by poor-quality data, three in situ situations — patchy saturation, subresolution thin layering, and elastic anisotropy — provide a plausible explanation. In the patchy saturation situation, the well data must be corrected to produce realistic synthetic seismic traces. In the second and third cases, the effect observed in a well is likely to persist at the seismic scale.
Publisher
Society of Exploration Geophysicists
Subject
Geochemistry and Petrology,Geophysics
Reference24 articles.
1. Long-wave elastic anisotropy produced by horizontal layering
2. Fluid mobility and frequency-dependent seismic velocity — Direct measurements
3. Single‐scattering approximations for coefficients in Biot’s equations of poroelasticity
4. Blangy, J. P. , 1992, Integrated seismic lithologic interpretation: The petrophysical basis: Ph.D. dissertation, Stanford University.
5. Brie, A., F. Pampuri, A. F. Marsala, and O. Meazza, 1995, Shear sonic interpretation in gas-bearing sands: Society of Petroleum Engineers 70th Annual Technical Conference and Exhibition, SPE-30595, 701–710.
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