A constant pressure design approach for improving gas lift system injection depth

Abstract

The main constraint in a gas lift system is a limitation on injection volume and surface injection pressure due to the packaging and compressor capabilities available. In an ideal world, the system would have unlimited injection gas volume and unlimited injection pressure. This is often not the case with compressor availability and/or already existing facilities. These constraints can limit the design and efficiency of a gas lift system. This study was conducted to establish a method that would allow deeper injection without increasing compressor discharge pressure.

With limited injection pressure on surface, a gas lift system is limited in the injection depth that can be achieved. The design must conserve as much surface injection pressure as possible, to maximize the lifting depth.

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