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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+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+1622743

There is an upcoming "P&A wave" of wells that need to be permanently plugged and abandoned, especially in mature, offshore areas such as the North Sea and Gulf of Mexico. It is important to ensure that plugged wells do not leak after abandonment, as there could be several potential lea...

Authors Vrålstad Torbjørn Saasen Arild Fjær Erling Øia Thomas Ytrehus Jan David Khalifeh Mahmoud
Year 2018
Type Journal publication