The concepts for two new artificial lift systems were first presented in SPE paper 25422. In the present paper improved designs are presented. The application and the economics of the Hydraulic Gas Pump are compared to the gas lift method that was used in East Quito Fusselman Reservoir, Ward County, Texas. The author concludes that the Hydraulic Gas Pump can be a more economic artificial lift method than gas lift for East Quito Fusselman Reservoir.

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