The Effect of Carbonate Texture and Pore Types on the Pressure Dependence of Acoustic Velocities

Abstract

Carbonate rocks are often characterized by various pore types and depositional textures that result in complex relations between acoustic velocities and other parameters such as differential pressure (Pd). In this paper, we study the effect of texture and pore shape on a set of thirty groups of velocity-Pd trends from 63 carbonate core plug samples. We found that similar compressional velocity-Pd trends are associated with similar carbonate texture, pore shape and size. However, the effect of texture was found to be less predominant on shear velocity-Pd trends which were more influenced by pore shape.