Combined releases of oil and gas under pressure; the influence of live oil and natural gas on initial oil droplet formation

MARINE POLLUTION BULLETIN

卷:140

Article

Brandvik, Per Johan¹  Storey, Chris²  Davies, Emlyn John¹  Johansen, Oistein¹ 

[1] SINTEF Ocean, Marine Environm Technol, Trondheim, Norway

[2] SwRI, Ocean Simulat Labs, San Antonio, TX USA

关键词: Oil droplets;    Subsea;    Experiments;    Dispersants;    High pressure;    Live oil;   

DOI  :  10.1016/j.marpolbul.2019.01.036

来源: Elsevier

【 摘 要 】

Both oil droplets and gas bubbles have simultaneously been quantified in laboratory experiments that simulate deep-water subsea releases of both live oil (saturated with gas) and additional natural gas under high pressure. These data have been used to calculate particle size distributions (50-5000 mu m) for both oil and gas. The experiments showed no significant difference in oil droplet sizes versus pressure (from 5 m to 1750 m) for experiments with live oil. For combined releases of live oil and natural gas, oil droplet sizes showed a clear reduction as a function of increased gas void fraction (increased release velocity) and a weak reduction with increased depth (increased gas density/momentum). Oil droplets were reduced by a factor of 3 to 4 during simulated subsea dispersant injection (SSDI) and no significant effect of pressure was observed. This indicates that SSDI effectiveness is not dependent on water depth or pressure.

【 授权许可】

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