Houston, TX, United States
Houston, TX, United States

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.


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Patent
National Oilwell Varco | Date: 2016-12-01

A rotator mechanism for rotating an elongate member that is coupled to a reciprocating member of a pumping system includes: a body having a through-hole for receiving a portion of the elongate member; a first freewheel clutch configured to cause the elongate member to rotate incrementally about the body axis in a predetermined direction when the reciprocating member reciprocates; and a second freewheel clutch spaced from the first clutch and configured to prevent the elongate member from rotating opposite the predetermined direction when the reciprocating member reciprocates. One or both of the clutches includes circumferentially-spaced clutch elements, that may include rollers or sprags or both.


Patent
National Oilwell Varco | Date: 2017-01-11

There is described a bearing arrangement (1) for a bearing wheel (16) in a rotatable offshore structure, such as in a turret, said bearing arrangement being providable between the bearing wheel and a wheel shaft (18) around which the bearing wheel is rotatably connectable, wherein said bearing arrangement comprises a slide bearing (28) enabling said bearing wheel to slide axially on said shaft, wherein said bearing arrangement further comprises a roller bearing (34, 34). There is also described a bearing system comprising a plurality of bearing arrangements, a turret comprising such a bearing system as well as a vessel comprising such a turret. Finally there is described a method for mounting a bearing arrangement in a bearings system


Patent
National Oilwell Varco | Date: 2016-08-22

A pipe gripping assembly to selectively engage and disengage a pipe segment includes first and second jaws configured to clamp together around the pipe segment, at least one splined shaft fixedly housed in each of the first and second jaws; and at least one self-aligning piston housed in each of the first and second jaws and configured to slide and to rotate along the splined shaft. The self-aligning pistons each include a piston body, a cam, and a roller assembly coupled to the piston body and to the splined shaft. Each one of the roller assembly is configured to rotate relative to one of the cams.


Patent
National Oilwell Varco | Date: 2016-05-11

A drilling rig mast erection system includes a mast support shoe that is fixedly attached to a drilling rig substructure and has a support shoe pinned connection. A bottom mast section has a first mast pinned connection that is adapted to be pivotably connected to the support shoe pinned connection. A mast positioning apparatus is adapted to pivotably position the bottom mast section so that the first mast pinned connection is positioned adjacent to the support shoe pinned connection. The mast positioning apparatus includes a bottom mast support spreader having a first end that is adapted to be pivotably connected to the bottom mast section at a first spreader end pinned connection and a mast erection apparatus having a first end that is adapted to be pivotably connected to the bottom mast support spreader at a first mast erection apparatus pinned connection.


Patent
National Oilwell Varco | Date: 2016-10-05

There is described a draw-works (1) comprising:- a first drum (4) for storing and reeling an elongated hoisting member (10);- a second drum (8) for storing and reeling said elongated hoisting member (10); and- a rotation means (24, 28) for rotating said first drum (4) and said second drum (8); wherein- at least one of said first drum (4) and said second drum (8) is selectively connectable to and disconnectable from said rotation means (24, 28). There is also described a method for operating a draw-works (1).


Patent
National Oilwell Varco | Date: 2016-08-10

A drilling rig mast erection system is described that comprises a mast support shoe (210) fixedly attached to a drilling rig substructure (100), said mast support shoe (210) comprising a support shoe pinned connection (210p), a bottom mast section (220) of a drilling rig mast (200), said bottom mast section (220) comprising a first mast pinned connection (221 p) that is adapted to be pivotably connected to said first pinned connection (210p) of said mast support shoe (210), and a mast positioning apparatus (550) that is adapted to pivotably position said bottom mast section (220) so that said first mast pinned connection (221 p) is positioned adjacent to said support shoe pinned connection (210p), said mast positioning apparatus (550) comprising a bottom mast support spreader (502) having a first end that is adapted to be pivotably connected to said bottom mast section (220) at a first spreader end pinned connection (220p) and a mast erection apparatus (501) having a first end that is adapted to be pivotably connected to said bottom mast support spreader (502) at a first mast erection apparatus pinned connection (502p).


Patent
National Oilwell Varco | Date: 2016-03-18

Disclosed is a draw-works and a method of operation. The draw-works includes a first drum configured to store and reel in an elongated hoisting member, such as a hoisting cable, a second drum configured to store and reel in the elongated hoisting member, and a rotation device configured to rotate the first and second drums, wherein at least one of the drums is selectively connectable to and disconnectable from the rotation device.


Patent
National Oilwell Varco | Date: 2016-11-23

A coiled tubing handler lifts and extends outwardly over wellhead a support platform 42 on which a coiled tubing injector 12 is mounted. The handler collapses into a compact arrangement that allows it and the coiled tubing injector to be transported to a well site on a vehicle or trailer 18, and then used at the well site to raise, position and support the coiled tubing injector connected to a blow out preventer 76 and riser assembly 72 for connection to a well head. The support platform may be tilted backward and torward, shifted from side-to-side, and raised and lowered on the platform.


Patent
National Oilwell Varco | Date: 2016-09-12

A crane including an inner boom, an outer boom, a plurality of guide assemblies arranged along the length of the inner and outer boom and adapted for guiding a plurality of lines, and a multi-line material handling system including a first line having an outgoing portion extending to a sheave block, and an incoming portion returning from the sheave block to a supported anchor device, and a second line having an outgoing portion extending to the sheave block, and an incoming portion returning from the sheave block to the supported anchor device.


Patent
National Oilwell Varco | Date: 2016-06-22

An apparatus and method for separating solids from solids laden drilling fluid and selectively sizing the solids, the apparatus comprising a basket (312), a vibratory mechanism (314), a first screen deck (318b) and a second screen deck (318c) mounted below said first screen deck and a directing device for selecting a parallel or series mode of operation in which flow of solids laden drilling fluid is divided between the first deck and the second deck and a series mode of operation in which solids laden drilling fluid is directed on to the first screen deck and then drilling fluid screened thereby is directed on to said second screen deck, wherein the apparatus further comprises a moveable diverter tray for selecting parallel or series mode of operation, wherein said moveable diverter tray (320) is slideably arranged in rails (320a) having an expandable element (320p,320s) to selectively fix said moveable diverter tray (320) in said rails (320a).

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