Not sure of that Cosmo (10 or 20 mil bbls, ie) as they'll have...

Not sure of that Cosmo (10 or 20 mil bbls, ie) as they'll have to look for any 'unswept' portion of the field or a newish compartment.

Buffalo was a smallish structure with multiple sands & had 4 Oil producing wells. Buff#3 & B5 were on a good location, so produced bulk of the Oil (15.9 mmbbls) for most of the 5 yrs of production (55 & 58 months to b exact), whilst B7 & B9 produced 3.6 & 1.022 mmbbls each over 30 & 9 month period.

Total prod was 20.5 mmbbls predominantly from B3, 5 & 7. In the last 15 mths of Production the Water cut got to 80% & then 87% & the JV tried 2 months of shut-in but that only got them 3 extra months of oil with not much change in Water cut. At the end Water to Oil cut was too high (85+%) to keep going.

Basically CVN just needs to look for any unswept sweetspot or a Sand & then come up with a plan to flush that oil or drill a well etc etc.