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National Oilwell Varco Norway As patents


Recent patent applications related to National Oilwell Varco Norway As. National Oilwell Varco Norway As is listed as an Agent/Assignee. Note: National Oilwell Varco Norway As may have other listings under different names/spellings. We're not affiliated with National Oilwell Varco Norway As, we're just tracking patents.

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 new patent  National Oilwell Varco Norway As

. . ... National Oilwell Varco Norway As

Offshore lifting crane

Described is an offshore lifting crane, as for a vessel or platform, that includes a support structure, a crane boom connected to the support structure, a winch drum rotatable around its longitudinal axis, a winch drum drive means, and an elongated hoisting member. The hoisting member includes a first end connected to the winch drum and a second end connectable to a load. ... National Oilwell Varco Norway As

National Oilwell Varco Norway As

. . ... National Oilwell Varco Norway As

Pipe storage and handling

A system for storing and handling pipes between a pipe rack and a derrick includes pipe-receiving chambers that are positioned around a centre region, and an elevator for lifting and descending the pipes into the chambers. The elevator, located in the centre region in between the receiving chambers, is configured for selecting one of the receiving chambers and for lifting and descending a respective pipe into the selected chamber.. ... National Oilwell Varco Norway As

System for hoisting a load on a drilling rig

A system for hoisting a load on a drilling rig includes: a hoisting means having an elongated hoisting member and an elongated hoisting member drive means; a drill string rotation means suspended from an end of the elongated hoisting member; a support structure having a first side and a second side and being adapted to support at least a portion of the weight the drill string rotation means; a first elongated hoisting member guiding means connected to the support structure; and a counterweight connected to the elongated hoisting member at the second side of the support structure. The elongated hoisting member is reeved over the first elongated hoisting member guiding means from the first to the second side of the support structure. ... National Oilwell Varco Norway As

Rig floor for a drilling rig

A system for moving items on a rig floor (2), the system comprising a plurality of skids (30-35) and a network of rails (10) for guiding the plurality of skids, each skid of said plurality of skids for supporting an item, and each skid having rail engagement members for engaging at least one rail of said network of rails. The rig floor may form part of a drilling rig such as a drill ship (1) used in the construction of oil and gas wells.. ... National Oilwell Varco Norway As

A method for placing and removing pipe from a finger rack

A system for placing and removing pipe from a finger rack of a drilling rig, the system comprising a pipe handling apparatus (140) and a finger rack (139) having at least one finger board (102) having at least two fingers (103 to 106) defining a slot (107 to 109) and a multiplicity of latches (114) arranged therebetween defining a space for a pipe, each latch (114) of the multiplicity of latches selectively movable between an open position and a closed position, the system further comprising at least one camera (101) having said at least one latch (114) of said multiplicity of latches in a field of view, capturing an image of said latch and sending said image to a master control computer (12′), said master computer control computer (12′) programmed with a set of instructions to analyse said image for details indicative of the latch (114) being in an open position or closed position, concluding the latch (114) to be in an open position or closed position and allowing or disallowing a pipe handling apparatus to place or remove a pipe in the finger rack (139) based on said conclusion.. . ... National Oilwell Varco Norway As

Method and device for estimating downhole string variables

A method for estimating downhole speed and force variables at an arbitrary location of a moving drill string based on surface measurements of the same variables. The method includes a) using properties of said drill string to calculate transfer functions describing frequency-dependent amplitude and phase relations between cross combinations of said speed and force variables at the surface and downhole; b) selecting a base time period; c) measuring surface speed and force variables, conditioning the measured data by applying anti-aliasing and/or decimation filters, and storing the conditioned data, and d) calculating the downhole variables in the frequency domain by applying an integral transform, such as fourier transform, of the surface variables, multiplying the results with said transfer functions, applying the inverse integral transform to sums of coherent terms and picking points in said base time periods to get time-delayed estimates of the dynamic speed and force variables.. ... National Oilwell Varco Norway As








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