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Erling Fjær

Chief Scientist

Erling Fjær

Chief Scientist

Erling Fjær
Phone: 928 15 142
Department: Petroleum
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1791328

In anisotropic materials Skempton's B parameter becomes a second order tensor. It is well established from laboratory experiments that the Skempton B tensor may deviate significantly from isotropy, which will influence the pore pressure response. The anisotropy of B in essence results from the aniso...

Year 2019
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1772643

Borehole collapse during drilling operations in shale formations is a well-known and costly problem within the petroleum industry. Recently it has become evident that shales may also form sealing barriers around the casing, reducing the need for cement jobs on new wells, and reducing costs for plugg...

Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1758099

Several field observations by cement bond logs (a technique used to detect substance behind casing) indicate progressive borehole closure in soft rock such as shale. This study considers the problem of progressive borehole closure in an elasto-viscoplastic rock mass. The behavior of the rock mass is...

Authors Xie Xiyang Fjær Erling Detournay Christine
Year 2019
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1758057

Several field observations by cement bond logs (a technique used to detect substance behind casing) indicate progressive borehole closure in soft rock such as shale. This study considers the problem of progressive borehole closure in an elasto-viscoplastic rock mass. The behavior of the rock mass is...

Authors Xie Xiyang Fjær Erling Detournay Christine
Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1619081

Static moduli of rocks are usually different from the corresponding dynamic moduli. The ratio between them is generally complex and depends on several conditions, including stress state and stress history. Different drainage conditions, dispersion - often associated with pore fluid effects – heterog...

Authors Fjær Erling
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1618696

Creep, the time-dependent deformation of rock, has a promising application in petroleum engineering, as it may contribute to establish a physical barrier preventing leakage from the reservoir through the casing annulus. The contact between the rock and the casing is the first step to establish such ...

Authors Xie Xiyang Detournay Emmanuel Fjær Erling
Year 2019
Type Part of a book/report