摘要
普通底阀无防砂和定压开启功能,对出砂严重的井况常出现层窜、返砂等问题。研制的新型调压底阀具有启闭压力可调、依靠液力启闭、液力缓冲和定压开启功能,能够及时开启定压开启机构,完成反洗井作业,保证洗井效果,有效防止了关井后地层返吐造成的出砂现象,保证了分层注水质量。
Usual foot-valve often present flowing from one stratum to another and returning sands, etc. for the well of returning sands seriously without sands prevention and opening in a constant. For the adjustable shut-open pressure, opening or shutting by hydraulic pressure, cushioning by hydraulic pressure and opening by constant pressure, our adjustable foot-valve in pressure can open in time so as to finish the work of reverse circulation washing well, and ensure a good effect, and prevent sands well since the well is shut. This ensures the quality of the stratified flow pouring water into.
出处
《石油矿场机械》
2007年第1期60-62,共3页
Oil Field Equipment
关键词
调压
底阀
分层注水
定压开启
防砂
adjustable pressure
foot valve
delaminating injection
constant pressure turn on
prevention grit
