After the melting cavity of the salt cavern gas storage in Jiangsu Jintan gas storage is completed, gas injection and brine removal operations are required. During this process, the compressor displacement is about 300,000 standard cubic meters per day, and the gas injection compression for the Jintan gas storage The exhaust capacity of a single machine is about 1.5 million standard cubic meters per day. If another compressor with a small displacement is installed, it will inevitably increase a lot of costs. Therefore, how to use the existing equipment conditions of the gas storage to adjust the displacement of the compressor and improve the economic benefits of gas injection and brine discharge has become the focus.

　　Through professional calculations, repeated adjustments, and adopting a new adjustment plan, Prehaote Energy has adjusted the compressor displacement from 270,000 standard cubic meters to 940,000 standard cubic meters within the range of inlet pressure of 3.0-6.0Mpa. The demand for gas volume adjustment at the compressor gas injection and brine discharge stage of Jintan Gas Storage has achieved significant economic benefits.