%0 Journal Article %1 rafavich_etal:1984 %A Rafavich, F. %A Kendall, C. H. S. C. %A Todd, T. P. %D 1984 %I SEG %J Geophysics %K geophysics seismics %N 10 %P 1622--1636 %R 10.1190/1.1441570 %T The relationship between acoustic properties and the petrographic character of carbonate rocks %U http://dx.doi.org/10.1190/1.1441570 %V 49 %X Laboratory studies of the detailed relationships between acoustic properties and the petrographic character of brine- and air-saturated carbonate rocks with a wide range of facies, porosities, lithologies, and rock fabrics indicate that porosity is the major factor influencing both P- and S-wave impedance and velocity. Primary lithology and secondary mineralogy have only a small influence on impedance and velocity. Combined use of P- and S-wave velocity data discriminates porosity changes from lithologic changes. All other variables, including pore-fluid type and petrographic fabric, have no significant influence on velocities. Laboratory measurements of P-wave velocity under simulated in-situ conditions reproduce well-log velocity values reliably. Laboratory porosity-velocity trends agree with the time-average equation when the correct matrix velocities are used. Rock property results were used to interpret porosity/lithology variations for an inverted seismic section from the Williston basin. Where well control was available, the porosity/lithology interpretation was found to be in agreement with the subsurface control.

@article{rafavich_etal:1984, abstract = {Laboratory studies of the detailed relationships between acoustic properties and the petrographic character of brine- and air-saturated carbonate rocks with a wide range of facies, porosities, lithologies, and rock fabrics indicate that porosity is the major factor influencing both P- and S-wave impedance and velocity. Primary lithology and secondary mineralogy have only a small influence on impedance and velocity. Combined use of P- and S-wave velocity data discriminates porosity changes from lithologic changes. All other variables, including pore-fluid type and petrographic fabric, have no significant influence on velocities. Laboratory measurements of P-wave velocity under simulated in-situ conditions reproduce well-log velocity values reliably. Laboratory porosity-velocity trends agree with the time-average equation when the correct matrix velocities are used. Rock property results were used to interpret porosity/lithology variations for an inverted seismic section from the Williston basin. Where well control was available, the porosity/lithology interpretation was found to be in agreement with the subsurface control.}, added-at = {2012-09-01T13:08:21.000+0200}, author = {Rafavich, F. and Kendall, C. H. S. C. and Todd, T. P.}, biburl = {https://www.bibsonomy.org/bibtex/2de1b8f884f3fe46d2fd47a035fe2c61d/nilsma}, doi = {10.1190/1.1441570}, interhash = {ee6a39c269574538979b241d1d8b0ae4}, intrahash = {de1b8f884f3fe46d2fd47a035fe2c61d}, journal = {Geophysics}, keywords = {geophysics seismics}, month = oct, number = 10, pages = {1622--1636}, publisher = {SEG}, timestamp = {2021-02-09T13:23:37.000+0100}, title = {The relationship between acoustic properties and the petrographic character of carbonate rocks}, url = {http://dx.doi.org/10.1190/1.1441570}, volume = 49, year = 1984 }