Method and apparatus for the downhole metering and control of fl

Method and installation for pumping an oil-well effluent

Method and system of fluid analysis and control in...

Oil production trip control ball

Oil well monitoring device

Oil well production system

Outdoor well depth indicator

Plunger lift controller and method

Polymer flow control apparatus

Pressure responsive safety system for fluid lines

Pressure test method for permanent downhole wells and apparatus

Pumping well blow-out preventer

Real-time pump optimization system

Real-time pump optimization system

Recovery and control system for leachate collection

Remote control for well tool

Safety switching system for clamping devices for pipes

Shut-in tools

Shut-in tools

Shut-off control system for oil/gas wells