Til hovedinnhold

Bjørnar Lund

Seniorforsker

Bjørnar Lund

Seniorforsker

Bjørnar Lund
Telefon: 926 41 877
E-post:
Avdeling: Petroleum
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1832289

In this paper, we present the results of barite sag measurements before and after hot-rolled oil-based drilling fluids (OBDFs) using different approaches for characterization. We characterized the barite sag of a liquid column under static condition using light-scattering (LS) measurements, hydrosta...

Forfattere Ofei Titus Ntow Kalaga Dinesh V. Lund Bjørnar Saasen Arild Linga Harald Sangesland Sigbjørn Gyland Knud Richard Kawaji Masahiro
År 2020
Type Tidsskriftspublikasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1800500

Laboratory and field experiences record that sagging of weighting agents such as barite in drilling fluids is often worse in dynamic conditions, e.g. pumping, tripping or drill pipe rotation, than in static conditions. Barite sag has resulted in problematic wellbore issues including loss of wellbore...

Forfattere Ofei Titus Ntow Lund Bjørnar Saasen Arild Sangesland Sigbjørn Gyland Knud Richard Linga Harald
År 2019
Type Del av bok/rapport
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1774701

In this study, our recent and new approach for detailed tracking of the interface between well fluid and cement by using particles is investigated. The particles can enable us to know the precise location of the interface between two fluids and be sure about displacement efficiency in the annulus. T...

Forfattere Taheri Amir Ytrehus Jan David Taghipour Ali Lund Bjørnar Lavrov Alexandre Torsæter Malin
År 2019
Type Del av bok/rapport
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1774672

In this study, a new approach for detailed tracking of the interface between well fluid and cement by using particles is investigated. This can improve the quality of annular cementing of CO2 wells and thus the storage safety. For this purpose, the displacement mechanisms of Newtonian and non-Newton...

Forfattere Taheri Amir Ytrehus Jan David Taghipour Ali Lund Bjørnar Lavrov Alexandre Torsæter Malin
År 2019
Type Del av bok/rapport