National Oilwell Varco is an American multinational corporation based in Greater Sharpstown, Houston, Texas. It is a leading worldwide provider of equipment and components used in oil and gas drilling and production operations, oilfield services, and supply chain integration services to the upstream oil and gas industry. The company conducts operations in more than 1,200 locations across six continents.The Company's common stock is traded on the New York Stock Exchange under the symbol "NOV". The company operates through four reporting segments that were reorganized in 2014: Rig Systems, Rig Aftermarket, Completion and Production Solutions, and Wellbore Technologies.Products include all the heavy hardware for oil well drilling as well as drilling instrumentation and controls and drilling power generation and control. A partial list of heavy hardware includes topdrives, rotarys, drawworks, derricks, BOPs , mud pumps, riser equipment, and complete drilling rigs. Products also include instruments and controls required on the rig floor for the drilling operation. This includes sophisticated electronics for precise control, such as the control system Cyberbase. NOV also produces control electronics for power generation and control of drilling motors and motor control centers for AC motor control.In 2008, the Houston Chronicle ranked National Oilwell Varco as the best company in Greater Houston. In 2007, the newspaper ranked National Oilwell Varco number 15.NOV is the Houston area's largest energy employer, with more than 14,500 workers in the region, according to Houston Business Journal research. Wikipedia.
National Oilwell Varco | Date: 2015-03-06
The disclosure relates to a tool for honing a tubular component of a wellsite. The honing tool includes a base operatively connectable to a wellsite component, a honing head supported by the base, honing stones supported about the honing head, and a driver. The honing stones are engageable with an outer surface of the tubular component. The driver rotationally drives the honing head whereby the honing stones hone an outer periphery of the tubular component.
National Oilwell Varco | Date: 2015-01-05
A method and apparatus for estimating the instantaneous rotational speed of a bottom hole assembly at the lower end of a drill string. In one embodiment, a method includes driving the drill string by a drilling mechanism at the upper end of the drill string. A fundamental frequency of stick-slip oscillations suffered by the drill string is estimated. Variations in a drive torque of the drilling mechanism are determined. Known torsional compliance of the drill string is combined with the variations in the drive torque. An output signal representing the instantaneous rotational speed is provided.
National Oilwell Varco | Date: 2015-02-04
A blowout preventer for sealing a tubular of a wellbore is provided. The blowout preventer has a housing having a bore therethrough for receiving the tubular, at least one ram slidably positionable in the housing (each of the rams having a ram block for sealing engagement about the tubular), an actuator for selectively driving the ram block (the actuator comprising a piston slidably positionable in a cylinder), and a monitor for detecting the piston therein. The monitor has a visual indicator on an exterior of the cylinder. The visual indicator is operatively coupled to the piston for displaying a position of the piston as the piston travels within the cylinder whereby a position of the ram may be determined.
National Oilwell Varco | Date: 2015-11-30
A stabilizer for a line may include a guide configured for arrangement on the line to resist and/or damp lateral motions of the line where the guide may include a guide jacket having a static sleeve configured to allow the line to pass through the guide and a fortifying bracket configured to reinforce the guide jacket and configured to interface with a hanging system to support the guide jacket and maintain the guide jacket in position on the line.
National Oilwell Varco | Date: 2015-01-15
A method, process, system, and apparatus for straightening of thin tubular shapes. A method of straightening of thin tubular shapes includes: supporting a tubular product between a plurality of first support members and a plurality of second support members of a bending apparatus; applying loads to the tubular product at respective locations along a length of the tubular product using a plurality of actuators of the bending apparatus; and using a recipe-based program to calculate the loads at the respective locations and control the plurality of actuators to apply the loads.