The oil reservoir in the Liubei Block of Jidong Oilfield is deeply buried. After adopting the natural gas flooding development mode, the gas-liquid ratio of responsive oil wells increased sharply, making conventional rod pump lifting unable to meet the entire lifting demand throughout the injection-production cycle.This paper modifies current multiphase flow and inflow performance models and conducts laboratory experiments to determine suitable multiphase flow and inflow performance models for Liubei natural gas flooding wells. Based on these models, research is carried out on casing-controlled lifting, conversion from pumping to gas lift, and prediction of natural flow timing. This forms a full-cycle efficient lifting technology for natural gas flooding wells in deep reservoirs, providing technical support for efficient lifting in Jidong Oilfield's natural gas flooding reservoirs.