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Estimation of stress-dependent anisotropy from P-wave measurements on a spherical sample
- 1.0363147 - GLÚ 2012 RIV US eng J - Journal Article
Nadri, D. - Bóna, A. - Brajanovski, M. - Lokajíček, Tomáš
Estimation of stress-dependent anisotropy from P-wave measurements on a spherical sample.
Geophysics. Roč. 76, č. 3 (2011), WA91-WA100. ISSN 0016-8033. E-ISSN 1942-2156
Institutional research plan: CEZ:AV0Z30130516
Keywords : P-wave elastic anisotropy * high confining stress * Thomsen anisotropy
Subject RIV: DB - Geology ; Mineralogy
Impact factor: 1.418, year: 2011
Stress-dependent seismic anisotropy of the overburden shale in an oil field was studied. The dependency of P-wave velocity, a, on pressure has exponential and linear components, which can be contributed to the compliant and stiff porosities. It was found that Thomsen anisotropy parameters and decrease exponentially with pressure and possibly reach to the intrinsic anisotropy of the clay minerals at 400 MPa.
Permanent Link: http://hdl.handle.net/11104/0199210
Number of the records: 1