SUBMERSIBLE PUMP INSTALLATION, METHODS AND SAFETY SYSTEM

摘要

A landing nipple and safety system for installation in wells having a submersible pump for pumping formation fluids to the well surface plus a subsurface safety valve for maintwining the well under control during installation and removal of the pump from the well. The subsurface safety valve may be hydraulically actuated by either the discharge pressure of the pump or input power fluid for hydraulically powered pumps. The landing nipple to which the pump is attached and in which the safety valve is installed can be retrieved from the flow condoctor by conventional wire line techniques.