RE: Seismic11 Dec 2018 18:41
COS is incredibly complicated. Bizarrely the actual successs rate of a drill is only loosely connected to the cos.
The cos is a statistical occurrence.
I’ve just put something on Twitter. Cos is to do with trap, source, migration. They can all be 50% but the cos comes out at 15%.
Importantly cos is also affected by distance from nearest hole that has drilled that zone and how many holes drilled in the license area. Type of strata etc.
Given all of this even with an 80% chance of a good source rock etc the best your going to get is about 35%.
Sounds weird but.