Application of Boosted Drainage Gas Extraction Technology in Deep Tight Gas Reservoir

In response to issues such as bottom hole liquid accumulation, water lock damage, and high pressure in the gathering system in the deep tight gas reservoir of Block SS9H in the D Oilfield, some wells exhibit characteristics of high pressure and low production. This paper explores the application effects of boosted drainage gas extraction technology in this area by combining field tests with equipment analysis. Through regional boosting process optimization and integration with production dynamics, the technical effects are systematically evaluated. After 106 days of field testing, it was found that the wellhead pressure increased from 2.5 MPa to 6.0 MPa, and the daily gas production rose from 0.54× 10^4 m3 before the experiment to 1.38 × 10^4 m3, with a recovery rate of 70%–90% and a cumulative gas increase of over 308.6 × 10^4 m3. The liquid carrying efficiency in the wellbore increased by 3.5 times, and the open well rate of the gas wells significantly improved with economic benefits increasing by 15%. This technology provides a replicable technical pathway for the efficient development of tight gas reservoirs.