This paper presents successful applications of the gas lift to heavy oil reservoirs in Intercampo oilfield,Lake Maracaibo. Liquid production rate ranges from 50 to 2000 bbl per day per well,gas lift was selected as the first artificial lift method in the oilfield.The paper expresses the gas lift mechanisms in high water cut with lower API degree in heavy oil reservoirs. The theory analysis showed that injection gas rate of gas lift and GOR of oil well have direct effects on fluid flow state in wellbore.
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