注气吞吐解除近井地层反凝析的可行性  

Feasibility of eliminating retrograde condensation in near-wellbore formation by cyclic gas injection

作　　者：赵习森 柳春云 张云 罗云 徐久龙 

机构地区：[1]中石化西北油田分公司雅克拉采气厂,新疆库车842017

出　　处：《石油钻采工艺》2010年第B11期50-53,共4页Oil Drilling & Production Technology

基　　金：中石化先导项目"深层高含凝析油气藏提高采收率技术与对策(编号:yc2006-106)

摘　　要：衰竭式开发凝析气藏,当井底流压低于露点压力之后,会发生反凝析油的析出,这将导致气井产能的急剧下降。近井带反凝析污染比地层中的反凝析污染早得多,严重得多。利用相平衡理论,通过实验研究、模型的建立及数值模拟,研究了大涝坝凝析气藏单位注气吞吐解除反凝析污染的可行性,给出了凝析气藏衰竭开发的一种技术思路。For depleted condensate gas reservior,when the bottomhole flow pressure in gas condensate well is below the dew point pressure,the retrograde gas condensation will occur,normally resulting in sharp decline of gas well productivity.Retrograde condensa-tion pollution in near wellbore area occurs much earlier and severer than that in formation.By using phase equilibrium theory and based on the experiments,model establishment and numerical simulation,the feasibility of eliminating retrograde condensation by cyclic gas injection was studied,which offers a technical idea for development of depleted condensate gas reservoirs.

关 键 词：凝析气藏 注气吞吐 反凝析 大涝坝 

分 类 号：TE258[石油与天然气工程—油气井工程]