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Figure  3.16  -  Typical  performance  from  a  solution  gas
          drive  system.  At  the  initial  production  with  a  solution-drive
          mechanism, the well produces oil (green) with a low gas/oil ratio
          (GOR)  (blue).  As  oil  is  extracted,  the  reservoir  pressure  (black)
          drops,  gas  comes  out  of  solution,  and  the  GOR  rises  sharply;
          consequently, oil production drops.




















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