Patent application number | Description | Published |
20090183923 | Top drive drilling system and other applications using a low speed direct drive AC motor - A low speed alternating current motor having motor shaft speeds of about 300 is provided, and such motor has application in numerous industries and devices, such as, for example, in top drive drilling systems. Because of the low shaft speed, mechanical speed reduction equipment may not be necessary. In addition, the motor shaft may be hollow to facilitate the flow of fluid, such as, for example, drilling mud. | 07-23-2009 |
20100314168 | FLYWHEEL-BASED ENERGY STORAGE ON A HEAVE-COMPENSATING DRAWWORKS - A system for managing energy consumption in a heave-compensating drawworks includes a power supply, a winch drum connected to the power supply so as to receive power from the power supply, a flywheel connected to the winch drum and to the power supply, and a controller connected to the power supply and to the winch drum for passing energy to and from the flywheel during an operation of the winch drum. The flywheel includes a disk rotatably coupled to an AC motor. The power supply includes a first pair of AC motors operatively connected on one side of the winch drum and a second pair of AC motors operatively connected on an opposite side of the winch drum. | 12-16-2010 |
20100329905 | PERMANENT MAGNET DIRECT DRIVE MUD PUMP - A permanent magnet direct drive mud pump has a permanent magnet motor, a shaft connected to the permanent magnet motor, and a pump head connected to the end of the shaft opposite the permanent magnet motor. The permanent magnet motor has a housing, a stator positioned within the housing, and a rotor cooperative with the stator and positioned interior of the stator within the housing. The rotor is interconnectable with the shaft so that the rotational motion created by the permanent magnet motor can be directly imparted to the shaft and, accordingly, to the pump head without the use of a transmission. | 12-30-2010 |
20110073297 | PERMANENT MAGNET DIRECT DRIVE DRAWWORKS - A direct drive drawworks has a permanent magnet motor, a shaft extending from the permanent magnet motor so that the permanent magnet motor directly rotates the shaft, and a drum connected to the shaft away from the permanent magnet motor such that the rotation of the shaft causes a corresponding rotation of the drum. The permanent magnet motor has a housing, a stator positioned in the housing, and a rotor cooperative with the stator. The rotor has a drive plate affixed thereto. The shaft is directly connected to the drive plate. A bearing housing rotatably supports the shaft. | 03-31-2011 |
20110148209 | ENERGY STORAGE SYSTEM FOR PEAK-SHAVING OF DRILLING RIG POWER USAGE - An energy storage means for a drilling rig has a source of power, an AC bus connected to the source of power, a DC bus, a load connected to the DC bus, a rectifier connected to the AC bus and to the DC bus for converting AC power from the source of power to DC power to the load, and an energy storage system connected to the DC bus. The energy storage system can be batteries, capacitors or combinations thereof. A diode is connected between the energy storage means and the DC bus so as to supply power to the load when the DC voltage is less than a DC source voltage. The energy storage system has a nominal voltage slightly lower than a voltage of a AC-to-DC conversion by the rectifier. | 06-23-2011 |
20110253455 | PERMANENT MAGNET DIRECT DRIVE TOP DRIVE - A drive system ( | 10-20-2011 |
20110309315 | TWO SPEED DIRECT DRIVE DRAWWORKS - A direct drive drawworks has a permanent magnet motor with a first set of windings and a second set of windings, a shaft extending from the permanent magnet motor such that the permanent magnet motor directly rotates the shaft, a drum connected to the shaft away from the permanent magnet motor such that the rotation of the shaft causes a corresponding rotation of the drum, and a switch cooperative with the first set of windings and the second set of windings so as to cause the sets of windings to be selectively connected in parallel or in series. | 12-22-2011 |
20120223524 | SYSTEM AND METHOD OF SUPPLYING POWER TO LOADS OF A DRILLING RIG - A system for providing power to a load of a drilling rig has a natural gas engine/generator and an energy storage system. The load is switchably connected to one or both of the natural engine/generator and the energy storage system. The natural gas engine/generator and the energy storage system have a capacity suitable for supplying requisite power to the load. A rectifier is connected to an output line of the engine/generator so as to convert the AC power to DC power. This rectifier is a phase-controlled silicon-controlled rectifier so as to be responsive to a power requirement of the load. The energy storage system is a battery. | 09-06-2012 |
20120292992 | DUAL FUEL SYSTEM AND METHOD OF SUPPLYING POWER TO LOADS OF A DRILLING RIG - A system for providing power to a load of a drilling rig has a dual fuel engine/generator and an energy storage system. The load is switchably connected to one or both of the dual fuel engine/generator and the energy storage system. The dual fuel engine/generator and the energy storage system have a capacity suitable for supplying requisite power to the load. A rectifier is connected to an output line of the engine/generator so as to convert the AC power to DC power. The energy storage system is a battery. The dual fuel engine/generator can be either a dedicated duel fuel system or a fumigation system. | 11-22-2012 |
20130240808 | TWO SPEED DIRECT DRIVE DRAWWORKS - A direct drive drawworks ( | 09-19-2013 |
20130271083 | ENERGY STORAGE SYSTEM FOR SUPPLYING POWER TO LOADS OF A DRILLING RIG - A system for supplying power to a drilling rig has an engine/generator with an output line so as to transfer power therefrom, an energy storage system connected to the engine/generator, and a load connected to the energy storage system such that power from the energy storage system is directly transferred to the load and such that power from the engine/generator is electrically isolated from the load. The engine/generator has a capacity greater than an maximum power requirement of the load. The energy storage system can include at least one battery. | 10-17-2013 |