Well production apparatus with fluid operated valve

Claim 1

A well production apparatus, comprising a pair of tubing strings, a tubing string hanger for connecting to and supporting said tubing strings, means for supporting said tubing hanger in a well bore of a producing well, completion means connecting to said hanger and providing connections extending out of the well bore, pressure responsive valve means mounted in one of said tubing hanger and said completion means and adapted to open and close flow through said tubing strings, means supplying a fluid under pressure to said pressure responsive valve means to remotely actuate said pressure responsive valve means, and means for retaining said valve means in open position during running of said valve means into said well bore which retaining means includes a chamber defined in said completion means and having an inlet and an outlet, the chamber inlet connecting to said supply means, the chamber outlet connecting to said valve means, a piston slidably positioned in said chamber and adapted in one extreme position to shut off communication through said chamber between said inlet and said outlet and in its other extreme position to establish communication between said inlet and said outlet, said piston in said one position trapping fluid in said pressure responsive valve means to hold said valve means open, and means for retaining said piston in said one extreme position and for moving said piston from said one extreme position to said other extreme position to allow said valve means to close.