A continuous-flow gas-lift installation design for injection-pressure-operated gas-lift valves is outlined on the basis of tubing capacity and daily injection-gas rate. The maximum daily production rate by gas lift decreases with a required increase in the depth of lift. The reservoir inflow performance of the producing formation is not considered in the installation design procedure. This valve spacing method is suited for gas-lift installations in wells with unknown productivity and/or changing reservoir pressure.

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