Blar i SINTEF Open på forfatter "Detournay, Emmanuel"
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Influence of Weight-on-Bit on Percussive Drilling Performance
Song, Xianfeng; Aamo, Ole Morten; Kane, Pascal-Alexandre; Detournay, Emmanuel (Peer reviewed; Journal article, 2020)A phenomenological model for percussive drilling systems is proposed in this paper to explain the experimentally demonstrated existence of an optimal weight-on-bit (WOB), for which the rate of penetration (ROP) is maximized. ... -
Time-dependent closure of a borehole in a viscoplastic rock
Xie, Xiyang; Fjær, Erling; Detournay, Emmanuel (Peer reviewed; Journal article, 2019)The paper describes a model to predict and analyze the time-dependent closure of a borehole drilled in a soft rock subjected to an initial isotropic stress, and the build-up of stress on a rigid casing after contact with ...