Economic Applicability Evaluation of Drainage Gas Production Technology in Tight Sandstone Gas Reservoir

Abstract

Abstract With the development of Sulige gas field, the recovery degree of the gas field increases gradually, the formation energy decreases continuously, the proportion of water-producing gas wells increases year by year, and drainage gas production has gradually become the main technical means to stabilize production and increase production. Under the requirement of low cost, quality improvement, efficiency enhancement and benefit development, according to the production characteristics of gas wells in Sulige gas field, a judgment model of gas well liquid accumulation is established. Sensitivity analysis and model simplification of critical liquid carrying flow method are carried out to analyze the economic applicability of various drainage gas production technologies. The research shows that the early intervention of drainage gas production technology in gas wells at the initial stage of liquid accumulation can effectively prolong the period. Gas well life cycle, improve gas well recovery.