In the second ad (scroll down to number 4) there was an additional exploration property (PEDL 129)being marketed with the package. This property may have been sold elsewhere as the announcement indicates KEY have purchased the whole of the subsidary.
If KEY have purchased the entire subsidary then they should also benefit from transfer of the 1,000,000 pound in usable tax losses that would go with the business.
In the second ad they have a combined production of 120 bopd.