Blar i UiS Brage på tidsskrift "Geoenergy Science and Engineering"
Viser treff 1-5 av 5
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Hyper-parameter optimization for improving the performance of localization in an iterative ensemble smoother
(Peer reviewed; Journal article, 2023)This work aims to help improve the performance of an iterative ensemble smoother (IES) in reservoir data assimilation problems, by introducing a data-driven procedure to optimize the choice of certain algorithmic ... -
Influence of fluid viscosity hierarchy on the reverse-circulation displacement efficiency
(Peer reviewed; Journal article, 2023)Reverse-circulation cementing is an alternative strategy for well cementing where the cementing fluids are injected directly into the annulus from the surface. This cementing strategy can reduce downhole circulation pressures ... -
Investigation of the hydraulic integrity of cement plug: Oilwell cementitious materials
(Peer reviewed; Journal article, 2023)The loss of hydraulic integrity in oil and gas wells due to the loss of cement sheath sealability can lead to environmental contamination, annular pressure build-up, and safety threats. In this study, we examine the hydraulic ... -
Multiscale insights into mechanical performance of a granite-based geopolymer: Unveiling the micro to macro behavior
(Peer reviewed; Journal article, 2023-09)Geopolymers (GPs), based on rocks and similar (waste) materials, have shown promising features as alternatives to Ordinary Portland Cement (OPC) in many applications. The properties of these materials can be tailored to a ... -
Whirling dynamics of a drill-string with fluid–structure interaction
(Peer reviewed; Journal article, 2023)Fluid–structure interaction models for drill-string vibrations are often of reduced order. However, both the structure and the surrounding fluid are non-linear, which can lead to complex coupled dynamic. In this paper, a ...