As a completion accessory, a circulationvalve is included to circulate fluid for well kill or kickoff.
作业完井的一个辅助工具，循环阀用于在压井或启动时循环流体。
2
International Circulation: it seems with the percutaneous valve replacement its... is that something that is being discussed here at ACC?
国际循环：经皮瓣膜置换，这也是此次ACC讨论的话题么？
3
Nominal diameter and flow valves, basically the same breath for full-bore type, Circulation than nominal diameter valve is given. it small called non-reducing type.