نمایش نتیجه 1 تا 4 از 4 نتیجه یافت شده برای face valve:
شیر نشیمن
n: a poppet spring-loaded subsurface valve run in on wireline, landed in a profile, to shut the well in if injection ceases.
a downhole valve in an injection well designed to prevent backflow if the injection is stopped.
n: (SIBHP) the pressure at the bottom of a well when the surface valves on the well are completely closed. It is caused by formation fluids at the bottom of the well.
the after flow, created by wellbore volume, into a wellbore after the surface valve has been closed.
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