Browsing Institutt for geovitenskap og petroleum by Journals "Geophysics"
Now showing items 21-24 of 24
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The impact of saturation on seismic dispersion in shales — Laboratory measurements
(Journal article; Peer reviewed, 2018)Previous studies found a significant increase of acoustic velocities between seismic and ultrasonic frequencies (seismic dispersion) for shales, which would have to be taken into account when comparing seismic or sonic ... -
Tube-wave monitoring as a method to detect shear modulus changes around boreholes: A case study
(Peer reviewed; Journal article, 2021)Monitoring the shear modulus of formations around boreholes is of interest for various applications, ranging from near-surface investigation to reservoir monitoring. Downhole logging tools and borehole seismic are common ... -
Variable source depth acquisition for improved marine broadband seismic data
(Journal article; Peer reviewed, 2015-05)In marine seismic data acquisition, varying the source depth along a sail line gives diversity in sequential shot gather frequency spectra. Undesired alterations of the frequency spectra are created by the source ghost and ... -
Velocity-attenuation model from check-shot drift trends in North Sea well data
(Peer reviewed; Journal article, 2020)Seismic attenuation distorts phase and narrows bandwidth in seismic surveys. It is also an exploration attribute, as, for example, gas or overpressure, may create attenuation anomalies. Compensating attenuation in imaging ...