Blar i NTNU Open på forfatter "Linga, Harald"
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A new approach to dynamic barite sag analysis on typical Field oil-based drilling fluid
Ofei, Titus Ntow; Lund, Bjørnar; Saasen, Arild; Sangesland, Sigbjørn; Gyland, Knud Richard; Linga, Harald (Chapter, 2019)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. ... -
Laboratory Evaluation of Static and Dynamic Sag in Oil-Based Drilling Fluids
Ofei, Titus Ntow; Kalaga, Dinesh V.; Lund, Bjørnar; Saasen, Arild; Linga, Harald; Sangesland, Sigbjørn; Gyland, Knud Richard; Kawaji, Masahiro (Journal article; Peer reviewed, 2020)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 ...