| STELLARTON TECHNOLOGIES INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120080196 | PLUNGER LIFT AND SAFETY VALVE SYSTEM - A plunger lift production system uses a production string including a bottom hole assembly, a production tubing having an inside diameter and including a safety valve having an inside diameter, and a plunger with an outside diameter which closely matches the inside diameter of the safety valve, and an expandable lug and pad assembly, which when expanded closely matches the inside diameter of the production tubing, and when not expanded closely matches the inside diameter of the safety valve. | 04-05-2012 |
| 20090272522 | MASTER BALL VALVE WITH INTEGRATED HANGER - A master ball valve with an integrated main hanger below the valve which may be used to hang jointed tubing, coil tubing, or electrified coil tubing for connection with an electric submersible pump. | 11-05-2009 |
| 20090242210 | DOWNHOLE FLUID RECIRCULATION VALVE - A downhole valve for insertion in a production tubing string permits recirculation of fluid pumped into the casing annulus. The valve includes a cylindrical housing defining an opening, an internal mandrel disposed within the housing, defining a central bore and defining an opening, a valve between the housing and the mandrel, wherein said valve opens to allow fluid communication from the mandrel central bore to the annulus space in response to a pressure differential between the mandrel central bore and the annular space, and biasing means for biasing the valve in a closed position. The valve may be set within a completion string by wireline techniques | 10-01-2009 |
| 20090142207 | BOTTOM HOLE HOLLOW CORE ELECTRIC SUBMERSIBLE PUMPING SYSTEM - An electric submersible pumping system includes a motor comprising an inner hollow core rotor and an outer stator, a gearbox comprising a hollow core input shaft connected to the motor rotor, and a hollow core output shaft, and a pump driven by the gearbox output shaft, the pump having an intake, and wherein the pump output is directed through the hollow core output shaft and into the hollow core motor rotor. The motor section is disposed above the gearbox and pump. | 06-04-2009 |
