安岳有水凝析气藏开发中后期产能挖潜研究

四川盆地安岳气田须二段致密砂岩气藏开发已取得丰硕的成果，然而通过系统梳理与分析地质资料、单井历史生产数据、气井压力资料、排水采气工艺措施效果，发现气藏开发中后期受气藏水侵严重、油管积液、反凝析油污染、治水效果不佳等多方面影响，导致气田目前产量递减快，单井产能下降，间开井和停产井增多，整体开发效果变差，针对目前存在问题，文章研究提出开发中后期产能挖潜对策：研究水淹规律，确定水侵模式；测井二次解释，弄清赋存模式，找准层间潜能；开展一井一策，判定影响因素，提出可行性实施工艺方案，实现难动用储量的高效开发。

Research on Potential Productivity Exploitation in the Middle and Late Stage of Condensate Gas Reservoir with Water in Anyue Formation

Gas exploration in tight sandstone of the 2nd Member of Anyue Xujiahe formation, Sichuan Basin, has been fruitful. However, through systematic review and analysis of the geological data, historical production data of single well, pressure analysis data and the effect of dewatering gas production, it is found that during the middle and later stages of the development of gas reservoir,the gas field is affected by severe water invasion, liquid accumulation in the oil pipe, contamination of the reverse condensate oil,and poor water control effect etc. , resulting in rapid production decline of gas field, the productivity of single well decreases,the number of intermittent wells and shut-down wells has been increased, and the overall development effect has become worse. According to these problems,countermeasures for potential productivity exploitation has been proposed. Studying the law of water-flooded and determining the pattern of water invasion;Logging secondary interpretation, making clear the mode of occurrence and finding out the potential between layers;Executing “one strategy for one well”, determining the influencing factors, putting forward the feasible implementation process and realizing efficient development of hard-to-get reserves in this formation.