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

PETROLEUM BEARING UNIT No.2: Langfield Group (Weaber-1)CONTENTS:GasFORMATION:Enga SandstoneAGE:Early Carboniferous (Mid Tournasian)LITHOLOGY:‘13.0 Sand’ : Off-white to pale yellow-brown, very finegrained, subangular to subrounded with calcareouscement. Poor visual porosity.‘14.0 Sand’ : Sandstone, predominantly off-white towhite, very fine to medium grained, angular tosubrounded, poorly sorted with dolomitic and calcareouscement and occasional silty matrix, interbedded withsiltstone.DEPOSITIONAL ENVIRONMENT: Shallow marine, shoreface environment.NET PAY:‘13.0 Sand’ : 1.5 m‘14.0 Sand’ : 15 mGROSS PAY:‘14.0 Sand’ : 18 mNET TO GROSS RATIO: ‘14.0 Sand’ : 83%WATER SATURATION:‘13.0 Sand’ : 35.6% (average from logs)‘14.0 Sand’ : 23.6% (average from logs)POROSITY:‘13.0 Sand’ : 9.9% (average from logs)‘14.0 Sand’ : 10.3% (average from logs)TEST DATA FROM THE DISCOVERY WELL (Weaber-1):DST 1, 1,281-1,313 m,Flowed gas at 56,600 m 3 /day througha 12.7 mm choke.DST 4, 1,273-1,421 m,Flowed gas at 127,420 m 3 /day througha 12.7 mm choke.Enga Sandstone’(‘13.0 Sand’)Enga Sandstone (‘13.0’ and ‘14.0 Sands’)TEST DATA FROM THE DISCOVERY WELL (Weaber-2A):DST 1, 1,016-1,044 m,Gas to surface at a rate too small tomeasure in 76 minutes. Recovered 17.7 mof rathole mud.DST 2, 1,020-1,037 m,Flowed gas to surface in 14 minutes at3,790 m 3 /day through a 12.7 mm choke.Recovered 1.4 bbls of slightly gas cutmud.Milligans FormationMilligans FormationAPPRAISAL AND DEVELOPMENT DRILLING :Weaber-2 was plugged and abandoned at 445 mKB due to severe hole problems. The well was redrilledas Weaber-2A.Weaber-2A flowed gas from the Milligans Formation. This gas sand is not developed in the nearbyWeaber-1 well. The Enga Sandstone reservoir encountered in Weaber-1 proved to be water wet inWeaber-2A