All wells in Entre Lomas Area, after a initial period ofrnnatural flow, requiered an artifitial lifting system. Gas-Liftrnsystem suited very properly the field characteristic.rnAs the reservoir pressure declined and the water-floodingrnexpanded, it became necessary to change the lifting systemrnprogressively from Gas-Lift to Sucker Rod Pumping (SRP) orrnElectrosubmersible Pumping (ESP).rnWith almost half of the wells already converted, thernremaining did not appear economically attractive forrnconversion at the individual well basis. Therefore, a globalrnconversion project for the remaining wells was considered,rnwhich ultimately yielded additional profit that made totalrnreplacement affordable.
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