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Audun Bakk

Senior Research Scientist

Audun Bakk

Senior Research Scientist

Audun Bakk
Phone: 473 18 656
Department: Petroleum
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1754224

Rocks surrounding a depleting oil or gas reservoir, or an inflating CO2 storage reservoir, are characterized by extremely low permeability in order to provide seals over geological time. It is well established that pore pressure change in a reservoir leads to stress changes around it, however, it is...

Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1718238

Depletion or injection into a reservoir implies stress and strain changes in the reservoir and its surroundings. This may lead to measurable time-shifts for seismic waves propagating in the subsurface. We have measured multidirectional ultrasonic P-wave velocity changes for three different field sha...

Authors Bakk Audun Holt Rune Martin Bauer Andreas Dupuy Bastien Romdhane Mohamed Anouar
Year 2019
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1703597

Time-lapse (4D) seismic is often used for monitoring hydrocarbon fields during depletion and injection processes (hydrocarbon production, enhanced oil recovery, or CO2 storage operations). When the reservoir pore pressure changes during production or injection, the formation stresses in reservoir an...

Authors Lozovyi Serhii Bauer Andreas Rørheim Stian Bakk Audun Chakraborty Samarjit
Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1703594

Depletion or injection into a reservoir implies stress and strain changes in the reservoir and its surroundings. This may lead to measurable time-shifts for seismic waves propagating in the subsurface. We have measured multi-directional ultrasonic P-wave velocity changes for three different field sh...

Authors Bakk Audun Holt Rune Martin Bauer Andreas Dupuy Bastien Romdhane Mohamed Anouar
Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1620694

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 to be accounted for in geophysical as well as geomechanical applications. Th...

Authors Holt Rune Martin Bakk Audun Bauer Andreas
Year 2018
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1611800

Shale rock physics may be used for improved monitoring of subsurface changes in and around a depleting reservoir. It is shown how rock physics plays a key role in interpreting time-lapse (4D) seismic into geomechanical attributes as changed stresses, strains and pore pressure. This knowledge is of i...

Authors Bakk Audun Stenebråten Jørn Lozovyi Serhii Bauer Andreas Bhuiyan Mohammad Hossain Fjær Erling Holt Rune Martin Sønstebø Eyvind Frode
Year 2018
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1609983

Fluid production from or injection into a subsurface reservoir leads to stress pressure changes inside and outside the reservoir. The overburden often consists of low permeability shale, and the undrained pore pressure response may be estimated from Skempton’s empirical equations. The key parameters...

Year 2018
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1602341

Since shales are the far most abundant overburden formation, understanding the geomechanical and rock physics behavior of shales is essential. We discuss a particular deep overburden shale in light of a thorough static and dynamic multi-directional data acquisition, as a basis for complete static an...

Authors Bakk Audun Stenebråten Jørn Lozovyi Serhii Bauer Andreas Sønstebø Eyvind Frode Fjær Erling Bhuiyan Mohammad Hossain Chakraborty Samarjit Holt Rune Martin
Year 2018
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1597720

In time-lapse (4D) seismic, slow-down in the overburden is often seen as a footprint of depletion in subsurface reservoirs. The work presented in this lecture has demonstrated that for stress changes around the in situ stress, laboratory measured stress and strain sensitivity of a field shale core d...

Authors Holt Rune Martin Bauer Andreas Bakk Audun
Year 2018
Type Media contribution
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1594649

Fluid production from or injection into a subsurface reservoir leads to stress pressure changes inside and outside the reservoir. The overburden often consists of low permeability shale, and the undrained pore pressure response may be estimated from Skempton’s empirical equations. The key parameters...

Year 2018
Type Conference lecture and academic presentation