Formation gas is gas that is entrained in the drilling fluid during the tripping of drill pipe (pulling pipe out of the hole). Formation gas is not expected to be producible from the shallow carbonate or Lunz formations, however the formation gas is evidence of an active petroleum system at the Welchau-1 well locationthat may result in a producible gas zone deeper in the well where the target reservoirs are expected to be encountered.
evidence of an active petroleum system at the Welchau-1 well location
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