Acta Geodaetica et Geophysica Hungarica
Volume/Issue:
Volume 47: Issue 2
The pressure dependence of acoustic velocity and quality factor — New petrophysical models
Authors:
M. Dobróka

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J. Somogyi Molnár University of Miskolc Department of Geophysics H-3515 Miskolc-Egyetemváros Hungary

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Pages:
149–160
Online Publication Date:
27 Apr 2012
Publication Date:
01 Jun 2012
Article Category:
Journal Article
DOI:
https://doi.org/10.1556/ageod.47.2012.2.4
Keywords (English):
acoustic velocity; microcrack; petrophysical model; pressure; quality factor
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In this study we introduce new rock physical models which describe the pressure dependence of seismic velocity and quality factor. The models are based on the idea (accepted in the literature) that microcracks in rocks are opened and closed under the change of pressure. The models were applied to acoustic P wave velocity data measured on core samples originated from oil-drilling wells (27 samples) and also seismic velocity and quality factor data sets published in international literature. During the measurements the pulse transmission and the spectral ratio techniques were used. Measurements were carried out at various incremental pressures and parameters of the models were determined by linearized inversion methods. The calculated data matched accurately with measured data proving that the new rock physical models apply well in practice.

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Cover Acta Geodaetica et Geophysica Hungarica
Acta Geodaetica et Geophysica Hungarica
Print ISSN:
1217-8977
Online ISSN:
1587-1037

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Acta Geodaetica et Geophysica
Language English
Size B5
Year of
Foundation		 2013
Volumes
per Year		 1
Issues
per Year		 4
Founder Magyar Tudományos Akadémia
Founder's
Address		 H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó Springer
Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 2213-5812 (Print)
ISSN 2213-5820 (Online)

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