초록 ▼

A submergible pump installation for wells comprising a submergible pump assembly adapted to be landed in position within the well bore for pumping well fluids to the surface, together with a safety system for the well including a subsurface valve or valves for maintaining the well under control as t

A submergible pump installation for wells comprising a submergible pump assembly adapted to be landed in position within the well bore for pumping well fluids to the surface, together with a safety system for the well including a subsurface valve or valves for maintaining the well under control as the pump is run into and removed from the well. At least one subsurface valve of the system is hydraulically actuated by the discharge pressure of the pump with the pressure fluid being conducted to the valve by a conducting means located exteriorly of the pump housing. The invention also contemplates the use of a novel poppet-type subsurface valve which may be suitably pressure balanced so that it is capable of being actuated by relatively low hydraulic control pressure supplied by the pump.

대표청구항 ▼

A submergible pump installation for a well having a tubing therein including a landing nipple comprising, a submergible pump having a lower intake and an upper discharge, said pump run in said tubing on means providing communication with the surface, means for mounting and sealing the pump within th

A submergible pump installation for a well having a tubing therein including a landing nipple comprising, a submergible pump having a lower intake and an upper discharge, said pump run in said tubing on means providing communication with the surface, means for mounting and sealing the pump within the tubing, said sealing means being located between the intake end and the discharge end of said pump whereby when the pump is operating, well fluid is pumped into said intake and is discharged from said discharge end, a subsurface safety valve having hydraulically-actuated means for controlling operation thereof, means for independently mounting and sealing said safety valve within the tubing at a point spaced below and having no direct physical connection with the submergible pump other than through the tubing, said valve controlling flow to the inlet of said pump, and means for conducting pressure fluid to the hydraulically-actuated means of said valve to operate said means and maintain said valve in open position when the pump is operating, said valve remaining in the tubing to prevent flow therethrough when the pump is pulled.