Browsing SINTEF Open by Author "Lozovyi, Serhii"
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From Static to Dynamic Stiffness of Shales: Frequency and Stress Dependence
Lozovyi, Serhii; Bauer, Andreas (Peer reviewed; Journal article, 2019)The relation between static and dynamic stiffness in shales is important for many engineering applications. Dynamic stiffness, calculated from wave velocities, is often related to static stiffness through simple empirical ... -
Stimulating relative permeability changes by low-frequency elastic waves: Theory and lab experiments
Rozhko, Alexander; Lozovyi, Serhii; Naumann, Marcel; Hansteen, Fredrik; Ravasi, Matteo (Peer reviewed; Journal article, 2022)A model is presented to describe how low-frequency vibrations can induce changes to relative permeabilities in dual-porosity dual-permeability rocks. We show that a combination of two physical processes may cause this ... -
Velocity dispersion in rocks: A laboratory technique for direct measurement of P-wave modulus at seismic frequencies
Lozovyi, Serhii; Bauer, Andreas (Peer reviewed; Journal article, 2019)Fluid saturated rocks exhibit a dependence of acoustic velocities on frequency, which is called velocity dispersion. For some rocks, e.g., shales, velocity dispersion is rather strong and has to be taken into account when ...