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Posts under ‘Christopher Ives’

Shell Nigeria recovers 95% spilled oil? Pardon my skepticism

By RestCo Principal Christopher Ives

Shell Nigeria recovers 95% spilled oil (Aug 20, 2018)

My colleague Darry MacMahon wrote – Pardon my skepticism, but how would they know? I’m making some assumptions here, based on typical oil industry and pipeline operation practice.

If you come up with a ratio number, like 95%, you need two underlying numbers: the amount recovered and the amount actually spilled.

The people doing the clean-up might have a reasonable number on how much they picked up. That number will likely be a little inflated, as they will also likely have picked up some water and small debris as part of the clean-up. Big vacuum units are not good at discriminating between oil and other things in and around the oil. So, the numerator is likely overstated. read more and its sister non-profit websites,,,,,, and are owned by John Donovan. There is also a Wikipedia feature.