Optimal Productivity Index from Gas Pay Zones with FAF Test
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Abstract
Gas Condensate reservoirs are hydrocarbon liquid dissolved in saturated natural gas that comes out of solution when the pressure drops below the dew point. Condensate liquid saturation can build up near a well because of draw down below the dew point pressure, ultimately restricting the flow of gas. This phenomenon is called as “condensate blockage or banking”. This improves the mobility of the gas with respect to the oil. If the gas does not have sufficient energy to carry the liquid to surface, then “liquid loading” in the wellbore occurs. If liquid falls back down the wellbore, the liquid percentage will increase and may eventually restrict the production that at this time. Besides, water-shutoff treatments in gas wells suffering from water influx are to reduce water production. In this paper it has been concluded that Artificial Lift technologies as the best selection in gas condensate reservoirs for more CGR recovery method can be used to solve this problem. To help this matter, as well, the Flow After Flow (FAF) well testing has been done for a gas condensate reservoir data to obtain some important outputs.
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