Research on Dynamic Evaluation and Management Strategies for the Whole Life Cycle of Block X in Sulige Gas Field

After years of development, the number of gas wells in production in Sulige gas field is large, and the area of concentrated well distribution is gradually decreasing, the proportion of liquid gas wells and low-production gas wells is gradually increasing, the production rate decline rate is increasing, and the demand for stable production of old wells is becoming more and more urgent. To slow down the decline trend of various gas wells in Block X of Sulige gas field and improve the final recovery rate of gas wells, Based on the current production status of various gas wells, they are divided into five life cycle stages: new investment stage, natural continuous production stage, continuous production stage, intermittent production stage, and shutdown stage. The prominent problems affecting stable production in each life cycle stage of various gas wells are summarized, and scientific and reasonable management strategies for different life cycle stages of X block in Sulige gas field are explored. The management countermeasures of the new investment stage and the natural continuous production stage are based on the principle of rational production allocation, the measures are taken as the focus of “liquid accumulation investigation-drainage and gas recovery” in the continuous production stage, the optimization of the intermittent system is the goal in the intermittent production stage, and the potential is tapped as the focus in the shutdown stage, so as to effectively guide the production management of gas wells and help gas wells stabilize production.