含硫气藏钻采同步交叉作业生产井泄漏风险量化研究OA

Safety issues during the development of sour gas reservoirs remain a critical research priority.Due to geological constraints of mountainous areas,simultaneous drilling and production operations are frequent-ly implemented.However,drilling operations can compromise the integrity of production wells,leading to leak-age and fire accidents.To quantify the leakage risks of production wells during simultaneous drilling and pro-duction operations in sour gas reservoirs,this study investigated a simultaneous drilling and production well pad in the Sichuan-Chongqing region.Numerical simulation methods were used to dynamically simulate the leakage and fire processes of production wells under different influencing factors.The results indicated that the leak ori-fice diameter was a decisive factor for the extent of leakage and fire risks,with risk boundaries undergoing quali-tative shifted as the diameter increases.Furthermore,release pressure served as a critical driving factor for the hazard zone.An increase in this variable exerted a nearly proportional expansion effect on the toxic gas disper-sion range,whereas it leaded to a core intensification of fire thermal radiation.Additionally,reducing the H2 S concentration effectively diminished the risk area associated with H2 S poisoning.These findings provide a theo-retical foundation and practical guidance for the safety management of simultaneous drilling and production oper-ations in sour gas fields.