Gabor Takacs, Zoltan Turzo
University of Miskolc
Changes in parameters such as tubing size, wellhead type, and gas lift pressures can improve the profitability of gas-lifted oil wells.
As an example, using field data and computer calculations, optimum tubing size and injection pressure were determined for the largest oil field in Hungary, the Algy" field, near Szeged.
Most wells in the field are on continuous-flow gas lift designed in the late 1960s with unique features dictated by the economics and technology of those times.
Proper operation was maintained until recently, but changes in reservoir parameters because of depl...