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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.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | National Oilwell Varco Norway As-related inventors


 new patent  Winch drum with internal wire storage

The winch drum device may be incorporated into a winch.... 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... 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... 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... National Oilwell Varco Norway As

Chain stopper

A chain stopper is connectable to a support structure, such as a platform, and comprises: a chain locking portion for automatically engaging a first chain link of a chain so as to prevent the chain from being pulled in a first direction and; an activation portion connected to the chain... National Oilwell Varco Norway As

Drilling rig

A system comprising a drilling rig having a rig floor, a derrick, a master control computer system and at least one camera, the at least one camera capturing a master image of at least a portion of the rig floor, sending the master image to the master control computer, the... National Oilwell Varco Norway As

A 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... 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... National Oilwell Varco Norway As








ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009



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