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Subsea dispersants injection (SSDI), effectiveness of different dispersant injection techniques – An experimental approach

Subsea dispersants injection (SSDI), effectiveness of different dispersant injection techniques – An experimental approach

Category
Journal publication
Abstract
The main objective with this study has been to study injection techniques for subsea dispersant injection (SSDI) to recommend techniques relevant for both laboratory studies and operational response equipment. The most significant factor was the injection point of the dispersant in relation to the release of the oil. The dispersant should be injected immediately before or after the oil is released. Then the dispersant will mix into the oil and reduce IFT before the oil enters the turbulent zone where initial droplet formation occurs. All injection techniques tested gave significant reductions in oil droplet sizes. However, due to the rapid oil droplet formation in turbulent jets and possible formation of surfactant aggregates in the oil, premixing of dispersants should not be used for experimental studies of subsea dispersant injection. This could underestimate dispersant effectiveness and produce results that might not be representative for up-scaled field conditions.
Language
English
Affiliation
  • SINTEF Ocean / Miljø og nye ressurser
Year
2018
Published in
Marine Pollution Bulletin
ISSN
0025-326X
Volume
136
Page(s)
385 - 393