Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Figures Only Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Kenter, J. A. M. Articles by van Lanen, X. M. T. Search for Related Content GeoRef GeoRef Citation

Acoustic behavior of sedimentary rocks

Geologic properties versus Poisson's ratios

Chevron Energy Technology Company, Voorburg, The Netherlands

Hendrik Braaksma

Laboratoire de Techtonophysique, Université Montpellier, France

Klaas Verwer and Xavier M. T. van Lanen

Vrije Universiteit, Amsterdam, The Netherlands

Corresponding author: klaas.verwer{at}falw.vu.nl

Velocity transforms are essential for the extraction of geologic information from seismic reflection data sets and/or predicting porosity from wireline logging data. Most commonly used transforms, like the Wyllie time average equation, the Raymer modified time-average equation, and the Gardner equation are all based on empirical relationships extracted from relatively small, "clean" mono- and bimineral and mostly siliciclastic data sets and generally fail to explain the acoustic relationships within multimineral data sets. To extract globally significant relationships between geologic and acoustic parameters, more than 2800 plug measurements were collected. More than two-thirds of the data were our own measurements; the others were from the literature. This data set covers nearly all sedimentary environments and mixtures of those as well as the entire range in petrophysical properties.