Featured patents

System and Method for Steering in a Downhole Environment Using Vibration Modulation
US 08844649 B2, Sept. 30, 2014, Natural Vibration Characteristic of an Element of Boring Means Related (1) to Natural Vibration Characteristic of Another Element, or (2) to Frequency of an Imposed Motion, Todd W. Benson / Hunt Advanced Drilling Technologies, L.L.C. (Dallas, US)
A system for using controlled axial vibrations to bias a drilling direction…

Arrangement and a Method for Monitoring an Air Flow in a Drill Rig
US 08813870 B2, Aug. 26, 2014, Measuring or indicating drilling fluid (1) pressure, or (2) rate of flow, Deyi Jiao et al. / Atlas Copco Rock Drills AB (Orebro, SE)
An arrangement in a rock drill rig comprising an inlet valve arranged upstream…

Method and Apparatus for Borehole Positioning
US 08800684 B2, Aug. 12, 2014, Tool position direction or inclination measuring or indicating within the bore, Johannes Witte et al. / Baker Hughes Incorporated (Houston, US)
A method of forming boreholes in an earth formation, the method comprising:…

Fluid Transfer Device Usable in Managed Pressure and Dual-Gradient Drilling
US 08783379 B2, July 22, 2014, Boring a Submerged Formation, Roger Sverre Stave
A fluid transfer device for use in wellbore drilling, comprising:…

Downhole Tools and Parts and Methods of Formation
US 08869920 B2, Oct. 28, 2014, Includes diamond, John H. Stevens et al. / Baker Hughes Incorporated (Houston, US)
A downhole tool, comprising:…

Wellbore Percussion Adapter and Tubular Connection
US 08739901 B2, June 3, 2014, Fluid-operated, Bradley R. Cote / Nov Worldwide C.V. NL
A method for accelerating the drilling penetration of a rotary driven drill bit,…

Sonic Latch Mechanism
US 08668029 B2, March 11, 2014, Sampling of earth formations, Thomas J. Oothoudt et al. / Longyear TM, Inc. (South Jordan, US)
A core barrel head assembly configured to engage with an outer casing, the core…

Ballistic Transfer Delay Device
US 08622149 B2, Jan. 7, 2014, With bore condition firing control, or compensating means, Bennie C. Gill et al. / Schlumberger Technology Corporation (Sugar Land, US)
A ballistic transfer delay device, the device comprising:…

Foot Valve Assembly for a Down Hole Drill
US 08561730 B2, Oct. 22, 2013, With internal-fluid passage, William H. Dell, II et al. / Atlas Copco Secoroc LLC (Grand Prairie, US)
A foot valve assembly for a down-the-hole (“DTH”) drill that includes a drill bit…

Drill Bit With a Flow Interrupter
US 08544567 B2, Oct. 1, 2013, Fluid conduit lining or element, Jeff Janzen et al. / Northbasin Energy Services Inc. (Edmonton, CA)
A drill bit having a distal end and a proximal end, the proximal end of the drill…

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