Laboratory measurements of acoustic and geomechanical properties of bitumen sandstones

Abstract

© 2018 EAGE. This work is devoted to the study of the acoustic and elastic geomechanical properties of bituminous sandstones under reservoir simulation conditions, as well as to the study of changes in these parameters with increasing temperature. In addition, the relationship between acoustic parameters and filter-capacitance properties was studied. The experiments were based on equipment that made it possible to determine the velocity of transmission of a longitudinal and transverse ultrasonic wave and dynamic elastic constants: Young's modulus and Poisson's ratio. As a result of laboratory studies of bitumen-saturated sandstones, the following results were obtained: - The values of the velocity of longitudinal and transverse waves, as well as the filter-capacitance characteristics for samples of bituminous sandstones were obtained; - The dependence of the longitudinal ultrasonic wave propagation velocity and open porosity was studied, as a result of which the method of studying acoustic parameters was proposed as an express method for estimating the porosity coefficient; - The behavior of the velocity of a longitudinal wave with increasing temperature was studied; - A linear relationship between the rate of change in acoustic properties and the values of open porosity is revealed.