◉The Weitz gas lock valve is a "U" - shaped valve body that can use the gas lock principle to transport low-level liquids to high places without slipping to the bottom of the well;
◉The pressure controlled drain valve is used to control the opening and closing of the channel between the oil pipe and the annulus through pressure, in order to achieve the function of graded lifting;
◉The throttling and drainage valve is set at the optimal drainage depth, which is a key tool for long-term liquid carrying and stable production of gas wells.

►After the gas lift activates the production capacity, the oil pipe outlet is connected to the production pipeline for pressurized extraction, and the annulus of the oil pipe is connected to the gas source of the pipeline network for continuous liquid carrying production.
►Based on the gas production and liquid production of the formation, as well as the wellhead oil pressure and casing pressure, determine the wellbore fluid accumulation and water and gas production, and ultimately determine the critical liquid carrying flow rate and auxiliary drainage gas consumption, and formulate the gas well production system.
► In order to respond promptly to changes in gas-liquid production during the stable liquid carrying production period of the resuming gas well, an automatic control system is installed in the surface pipeline gas control process to achieve unmanned gas lift.