摘要
针对苏里格气田开发特点,从降低成本考虑,开发应用了一种可直接用于压裂的不压井换阀采气井口。该采气井口将常规的11阀简化为6阀,在油管头四通两侧旁通及油管悬挂器上加工有内置背压阀螺纹,当采气井口主控阀门漏气需要更换时,通过专用工具将背压阀送入背压阀螺纹,从而实现封堵进行不压井换阀施工作业。另外,还配套开发应用了液压式堵塞器换阀方法,该方法可用于任何类型的采气井口带压换阀作业。不压井换阀采气井口目前已在苏里格气田大规模推广使用,2种带压换阀方法解决了采气井口更换阀门问题,经济效益和社会效益十分显著。
According to the development feature in Sulige Gas Field,considering reducing cost,a kind of non-well-killing valve-replacing gas production wellhead directly for fracturing is developed and applied.In the new wellhead,the common 11 valves are simplified as 6 valves and the built-in counter balance valve thread is processed in the bypass along the tubing head cross joint and tubing hanger,thus realizing the isolation operation with non-well-killing and valve replacement.In addition,a hydraulic plug valve replacement method is also developed for all kinds of operation.The new wellhead has been widely used in the gas field and the valve replacement problem solved with significant economic benefit.
出处
《石油机械》
北大核心
2008年第12期51-53,66,共4页
China Petroleum Machinery
基金
辽河石油勘探局项目"苏10区块天然气经济有效开发综合配套技术研究"(2007GG-12)
关键词
苏里格气田
压裂
采气井口
不压井换阀
Sulige Gas Field,fracturing,gas production wellhead,non-well-killing valve replacement
