Effect of texture on acoustic velocity in Jurassic carbonate rocks

Abstract

The main object of this research is to study the effect of texture on acoustic velocity of Jurassic carbonate rocks, which are from Late Jurassic Arab D member. 21 carbonate samples were studied, including 8 packstones, 3 wackestones, 3 mudstones and 2 dolostones. The dominant pore type of the limestone samples in this study are interparticle macropores, which are partly filled with some sparry and microsparry cements and micropores. The samples were characterized through thin section and Scanning Electron Microscopy (SEM) image analysis, porosity, permeability, and Nuclear Magnetic Resonance (NMR) measurements. By correlating the porosity and permeability with thin section and SEM observation of samples, it can be inferred that for these samples generally the porosity range of the samples is related to pore type: Low porosity (&phis; 20%) samples contain relative big macropores. Permeability is related to the pore throat size and rock fabric (Dunham's classification): low permeability (permeability

Date of Award	2016
Original language	American English
Supervisor	Sandra Vega (Supervisor)