Blar i Institutt for sirkulasjon og bildediagnostikk på emneord "VDP::Electromagnetism, acoustics, optics: 434"
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Determining Inner Geometry Properties From Eccentered Pulse-Echo Measurements in a Pipe
(Chapter, 2021)In the petroleum industry, well integrity evaluation is an essential part of maintaining the safety and sustainability of hydrocarbon production. Ultrasonic pulse-echo cased hole logging is a widely used type of measurement ... -
A fast semi-analytical method for propagating leaky Lamb wavefields
(Chapter, 2021)A fast method is presented for calculating the wavefields from initialized leaky Lamb waves on plates immersed in sufficiently light fluids. The method works by precomputing the dispersion relation and attenuation, and ... -
Getting started with acoustic well log data using the dlisio Python library on the Volve Data Village dataset
(Chapter, 2020)Three issues have long impeded academic research and teaching on well logging. First, real measured data has been hard to come by. This has now been alleviated by Equinor's 2018 release of the Volve Data Village dataset. ... -
Inhomogeneous P- and S-wavefields radiated into isotropic elastic solids
(Chapter, 2022)A vibrating surface in contact with a solid material will generate P- and S-waves in the solid. When the surface vibration is spatially attenuated, we must take into account that the generated waves are always inhomogeneous. ... -
Modelling acoustic radiation from vibrating surfaces around coincidence: Radiation into fluids
(Peer reviewed; Journal article, 2023)It is well-known that vibrating surfaces generate sound waves in adjacent fluids. According to the classical radiation model, the nature of these waves depends on whether the vibration’s phase speed cv is above (supersonic) ...