Surfactant Enhanced Oil Recovery

A former industrial site in North London was contaminated with a 100m long plume of NAPL stemming from historical fuel oil storage onsite.

Groundwater pressure was confining the oil beneath a layer of clay across the site, preventing it from being effectively recovered by conventional techniques. Surfactant flushing was selected to mobilise the oils, optimising recovery.

This technique was able to remove approximately 80-85% of the mobile oils within the ground over a two-month period and validation sampling ensured that Geo2

could demonstrate to regulators that the risks had been mitigated





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