Mole, is it feasible that after knowing zone 9 has flowed for 9 years that going deeper may be part of the field development plan to exhaust zone 19 first then having tested 14 and 15 they have the knowledge that the life of the well can be an extra x years as the other zones still have there resource in place therefore elongating the 10 year life cycle of the well to far longer....which would be very benificial all round...