As a completion accessory, a circulation valve 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。

youdao

As a completion accessory, a circulation valve 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。

youdao