Blar i Institutt for geovitenskap og petroleum på tidsskrift "SEG technical program expanded abstracts"
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Anisotropic poroelasticity – Does it apply to shale?
(Journal article; Peer reviewed, 2018)Shale plays an important role as cap rock above oil and gas reservoirs and above e.g. CO2 storage sites, as well as being source and reservoir rock in development of so-called unconventional reserves. Shale anisotropy needs ... -
Burial induced changes in physical sandstone properties: A case-study of North Sea and Norwegian Sea sandstone formations
(Journal article; Peer reviewed, 2017)The changes in physical properties of sandstones with burial depth are a result of mechanical and chemical compaction processes. These processes are affected by rock microstructure, pressure regimes and temperature history. ... -
Overburden geomechanical effects on 4D seismic response - influences of stiffness contrast, anisotropy, and geometry
(Journal article; Peer reviewed, 2014)Petroleum production and CO2 storage induce effective stress changes and deformations in the reservoir, as well as in the overburden. This may be detected by 4D seismic monitoring due to the stress-sensitivity of the seismic ... -
Overburden pore-pressure changes and their influence on 4D seismic
(Journal article; Peer reviewed, 2017)Changes in seismic two-way travel time in the overburden can be attributed to pore pressure changes in the underlying reservoir. Since cap rock permeability is very small, these stress changes occur without drainage on ... -
Stress-path dependence of ultrasonic and seismi velocities in shale
(Journal article, 2016)4D seismic time-shifts are induced by stress changes in the overburden as a result of depletion from or injection into an underlying reservoir. This represents a powerful technique for tracking unrecovered hydrocarbon ...