Featured patents

Method and System for Transferring Signals Through a Drill Pipe System
US 08833489 B2, Sept. 16, 2014, With Signaling, Indicating, Testing or Measuring, Espen Alhaug et al. / Reelwell AS NO
A method for transferring signals and or power through a drill pipe system during…

Dual Ball Upper Internal Blow Out Preventer Valve
US 08752653 B2, June 17, 2014, With valve, Arthur W. Braman et al. / National Oilwell Varco, L.P. (Houston, US)
An internal blowout preventer for use in drilling operations, comprising:…

Drill Bit With Continuously Sharp Edge Cutting Elements
US 08720609 B2, May 13, 2014, Cutting edge self-renewable during operation, Eric E. McClain et al. / Baker Hughes Incorporated (Houston, US)
A method of drilling a subterranean earth formation, the method comprising…

Intelligent Controlled Process for Well Lateral Coring
US 08678109 B2, March 25, 2014, With Means Movable Relative to Tool to Receive, Retain, or Sever Undisturbed Core, Claude Joseph Vercaemer et al. / Schlumberger Technology Corporation (Sugar Land, US)
A system for coring an underground formation surrounding a borehole, comprising:…

Method for Controlling Loss of Drilling Fluid
US 08672057 B2, March 18, 2014, Boring with specific fluid, Sabine C. Zeilinger et al. / ExxonMobil Upstream Research Company (Houston, US)
A method for drilling a borehole into a subterranean formation, the method…

Perforating Safety System and Assembly
US 08596378 B2, Dec. 3, 2013, With position orienting or indicating, Justin Lee Mason et al. / Halliburton Energy Services, Inc. (Houston, US)
A perforating assembly capable of being disposed in a bore of a subterranean…

Downhole Drill Bit
US 08590644 B2, Nov. 26, 2013, Insert, Ronald B. Crockett et al. / Schlumberger Technology Corporation (Houston, US)
A drill bit comprising:…

Apparatus and Method to Maintain Constant Fluid Circulation During Drilling
US 08590640 B2, Nov. 26, 2013, With valve, Per Olav Haughom / Baker Hughes Incorporated (Houston, US)
An apparatus for use with a drill string formed of jointed tubulars, comprising:…

Extendable Cutting Tools for Use in a Wellbore
US 08540035 B2, Sept. 24, 2013, With dropped element, David J. Brunnert et al. / Weatherford/Lamb, Inc. (Houston, US)
A tool for use in a well bore, comprising…

Milling Cap for a Polycrystalline Diamond Compact Cutter
US 08517123 B2, Aug. 27, 2013, With Cutting Edge Cover, Michael R. Reese / Varel International, Ind., L.P. (Carrollton, US)
Apparatus, comprising:…

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