COMPOSITIONAL DATA : GAS : GAS PROPERTIES Puffin Fm RFT ...

DEPOSITIONAL ENVIRONMENT:FORMATION TOP (mKB):POROSITY:PERMEABILITY:Pearce Member: Calcilutite/Calcarenite, white to offwhite,fine to medium, angular to subangular,recrystallised in part, patchy off-white argillaceousmatrix, trace of bryozoan and spinose fragments.Tern Member: lower to upper shoreface. Possibly adistributary mouth bar, channel or intradistributary baydeposit.Dombey Member: deltaic to shallow marine withrestricted sediment supply.Cape Hay Member: regressive phase with environment ofdeposition shallowing from lower to upper delta plain.2,293.5 mKB (Tern Member)15% (average log porosity)8.8 - 27.9 mD (MSCT data)10.4 mD (average log permeability)TEST DATA FROM THE DISCOVERY WELL (Fishburn-1):RFT 1, 2,323 m,Recovered 2.7 m 3 of gas, 5.2 litres offiltrate with a trace of oil/condensate.RFT 2, 2,373 m,Recovered 0.09 m 3 of gas and 46.5 litresof filtrate.Hyland Bay Formation (Tern Member)Hyland Bay Formation (Pearce Member)REMARKS:The low hydrocarbon saturations observed in the reservoir are thought to be due to a combination ofdeep filtrate invasion and the presence of pyrite (seen in cuttings) making log interpretation difficult.