Comprehensive analysis and effective treatment of plugging in shale gas wells: From composition identification to removal agent optimization.

ABSTRACT: With the extensive exploitation of shale gas fields in southern Sichuan, China, the Weiyuan Area - a key production zone within this region - has experinced a growing gas well plugging problem, which significantly hampers production efficiency. This study presents a comprehensive analysis of plugging problems in this area. Plugging samples were obtained from typically affected gas wells and subjected to a suite of analytical techniques. Results indicated that plugging materials were predominantly inorganic, primarily comprising iron-based impurities and mineral scale deposits, while organic components-present in minor proportions-primarily composed of long-chain alkanes. The formation of these plugs is attributed to downhole corrosion, high-salinity formation water, and complex chemical in

SUBMITTER: Xiong Y 

PROVIDER: S-EPMC12530535 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature