Blar i NTNU Open på forfatter "Larsen, Idar"
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Comparing mechanical and ultrasonic behaviour of a brittle and a ductile shale: Relevance to prediction of borehole stability and verification of shale barriers
Holt, Rune Martin; Larsen, Idar; Fjær, Erling; Stenebråten, Jørn (Peer reviewed; Journal article, 2019)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, ... -
Hydraulic Fracturing for Enhanced Geothermal Systems
Rongved, Mats (Master thesis, 2015)Finding new energy sources to provide base load electricity supply on a global scale is of increasing importance. Enhanced Geothermal Systems (EGS) has been identified as capable of playing an important role in the future ... -
Laboratory experiments on ultrasonic logging through casing for barrier integrity validation
Talberg, Andreas Sørbrøden; Johansen, Tonni Franke; Larsen, Idar (Chapter, 2017)Verification of annular barriers is essential for well integrity, with ultrasonic methods being central in well integrity testing for many decades. By doing ultrasonic pitch-catch measurements on a bench top laboratory ... -
Ultrasonic Evaluation of Clay Behind Casing
Storås, Fredrik (Master thesis, 2017)There's an increasing number of oil fields on the Norwegian continental shelf that will go out of production in the coming years, resulting in a big demand for permanent plugging and abandonment (P&A) services. There are ...