Subterranean well valve with lock open mechanism

作者： Michael A. Carmody

DOI:

关键词: Structural engineering 、 Plunger 、 Fluid pressure 、 Lock (firearm) 、 Mandrel 、 Mechanical engineering 、 Groove (engineering) 、 Mechanism (engineering) 、 Geology

摘要: A subterranean well valve assembly includes a mounted within an annular housing which is actuated by plunger co-axially the housing. The longitudinally shiftable to open valve, in response fluid pressure signal. Within housing, releasable latches are provided for engaging groove, thereby temporarily locking its lower position. also permanent lock mechanism comprising mandrel, including latch element. Longitudinal movement of mandrel locks place, interfering with subsequent retraction from locked