FAR Ltd shrugs off oil sector woes with ambitious Senegal venture, page-28

Found it. Chris Burnside answered the question on recovery factors at their capital markets day presentation.

In terms of recovery factor, we have a wide range at this point of time and as I say that also depends on the nature of the sands. We expect very high recovery factor in the blocky sands, with a favourable mobility ratio with the light oil and water you’d expect good recovery. In the thinner sands we might get less efficient recovery and so we’ve deliberately discounted our overall recovery for that until we collect some more information in the appraisal programme.

It doesn't say they have given different recovery factors for thin and blocky sands. It just says they expect different recovery factors in the thin and blocky sands. They have discounted the overall recovery until they have more info. So we might have some upside after these wells just by applying a more relevant recovery factor to the blocky sands.