The drill penetrated the top of the reservoir...and hit the gas cap, exactly as MEO had predicated. The fact that it was "high background gas readings" ..means pressure, indicates likely filling of the zone....in the secondary reservoir.
Two weeks ago, MEO said they would only test the top primary zone....its been successfully cased in a 7 inch liner and should flow very strongly.
Here is some old, but relevant research on the shale, mentioned today (one poster today suggesting shale gas??)...flow rates and wet nature of the gas.
________________________________________ ARUN Gas Fields
The gas reservoir is carbonate of Early and Middle Miocene age, underlain by a clastic sequence resting on basement rock of pre-Tertiary age. The reservoir is effectively enclosed in shales which, together with the organic material in the reef, are probably also the sources of hydrocarbons. The reservoir covers an area of about 17,000 ha. The average depth of the formation is about 3,048 metres, while the net pay thickness varies from 102 to 316 metres.
Gas produced from the reservoir has a methane content of 72 per cent, a carbon dioxide content of nearly 15 per cent, a small nitrogen content and a trace of hydrogen sulphide. The high potential of the reservoir is indicated by well productivities of over a billion cu. ft per day, with significant quantities of condensate. Wet gas-in-place has been calculated at 17.15 trillion standard cu. Ft., or the equivalent of 3 billion barrels of oil. This will be sufficient to produce 2 billion cu. Ft. per day of gas for a twenty-year period (Ooi Jin Bee, 1982, pp. 165- 66).
--------------------------------------- More older info re Arun LNG ....probably for keen investors only, shows just how close MEO fields are to this massive discovery from 30 years ago.
