Modeling the dispersion of drilling muds using the bblt model: the effects of settling velocity |
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Authors: | Haibo Niu Adam Drozdowski Tahir Husain Brian Veitch Neil Bose Kenneth Lee |
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Institution: | (1) Memorial University of Newfoundland, St. John’s, Newfoundland, A1B 3X5, Canada;(2) Bedford Institute of Oceanography, Dartmouth, Nova Scotia, B2Y 4A2, Canada;(3) Australian Maritime College, Launceston, Tasmania, 7250, Australia |
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Abstract: | The benthic boundary layer transport (bblt) model was widely used in the Atlantic Canadian offshore region to assess the potential
impact zones from drilling wastes discharges from offshore oil and gas drilling. The current version of the bblt uses a single-class
settling velocity scenario, which may affect its performance, as settling velocity is size, shape, and material dependent.
In this study, the effects of settling velocity on bblt predictions were assessed by replacing this single-class settling
velocity scenario with a multi-class size-dependent settling velocity scenario. The new scenario was used in a hypothetical
study to simulate the dispersion of barite and fine-grained drilling cuttings. The study showed that the effects of settling
velocity on bblt predictions are spatial, temporal, and material dependent. |
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Keywords: | |
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