Blar i NTNU Open på forfatter "Skjefstad, Håvard Slettahjell"
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Combined heat and power plant on offshore oil and gas installations
Riboldi, Luca; Skjefstad, Håvard Slettahjell; Nord, Lars O.; Følgesvold, Eirik (Journal article; Peer reviewed, 2016)Implementation of energy efficient technologies is an issue of growing importance for the offshore oil and gas industry. The rising awareness to increasing levels of CO2 in the atmosphere is a major contributor to this ... -
Controller Design and Control Structure Analysis for a Novel Oil–Water Multi-Pipe Separator
Ohrem, Sveinung Johan; Skjefstad, Håvard Slettahjell; Stanko, Milan; Holden, Christian (Journal article; Peer reviewed, 2019)To enable more efficient production of hydrocarbons on the seabed in waters where traditional separator equipment is infeasible, the offshore oil and gas industry is leaning towards more compact separation equipment. A ... -
Development and Assessment of a Multi-Pipe Oil-Water Bulk Separator Concept for Subsea Applications
Skjefstad, Håvard Slettahjell (Doctoral theses at NTNU;2019:306, Doctoral thesis, 2019)Subsea produced water separation has emerged as a viable technology for tackling challenges arising from increased water production rates. Removing produced water at the seabed will free up topside capacity constrained ... -
The effect of upstream inlet choking and surfactant addition on the performance of a novel parallel pipe oil-water separator
Skjefstad, Håvard Slettahjell; Dudek, Marcin; Øye, Gisle; Stanko, Milan (Peer reviewed; Journal article, 2020)This paper reports the effect of inlet choking and addition of surfactant on the performance of a parallel pipe oil-water separator. These two issues can have a strong effect on oil-water separation in real hydrocarbon ...