Featured patents

Drainage Method for Multilayer Reservoirs
US 08776914 B2, July 15, 2014, Boring horizontal bores, Ashok Belani et al. / Schlumberger Technology Corporation (Sugar Land, US)
A method, comprising:…

Drill String Valve and Method
US 08727040 B2, May 20, 2014, With Means Movable Relative to Tool Below Ground to Stop Flow Toward Bore Bottom, Derryl Schroeder et al. / Hydril USA Distribution LLC (Houston, US)
A drill string valve, comprising:…

Downhole Tools Having Activation Members for Moving Movable Bodies Thereof and Methods of Using Such Tools
US 08746371 B2, June 10, 2014, With latch operated by fluid pressure or dropped element, Steven Richard Gentry / Baker Hughes Incorporated (Houston, US)
A downhole tool for use in forming a borehole in a subterranean formation,…

Hybrid Drill Bit and Design Method
US 08678111 B2, March 25, 2014, Rolling cutter bit with fixed cutter, Ronny D. McCormick et al. / Baker Hughes Incorporated (Houston, US)
A method of varying a cutting rate of a bit used during drilling a well…

Underwater Drilling Arrangement and Method for Introducing a Tubular Foundation Element Into the Bed of a Body of Water
US 08668028 B2, March 11, 2014, Boring from floating support with submerged independent anchored guide base, Stefan Michael Finkenzeller / Bauer Maschinen GmbH (Schrobenhausen, DE)
Underwater drilling arrangement for introducing a tubular foundation element…

Expandable Reamer Apparatus Including Stabilizers
US 08657038 B2, Feb. 25, 2014, Cutter Element Laterally Shiftable Below Ground, Mark A. Jenkins et al. / Baker Hughes Incorporated (Houston, US)
An expandable reamer apparatus for enlarging a borehole in a subterranean…

Backfilled Polycrystalline Diamond Cutter With High Thermal Conductivity
US 08662209 B2, March 4, 2014, Having a specified thermal property, Michael R. Reese et al. / Varel International, Ind., L.P. (Carrollton, US)
A PDC cutter, comprising:…

Pressure Reversing Valve Assembly for a Down-The-Hole Percussive Drilling Apparatus
US 08631884 B2, Jan. 21, 2014, Fluid-operated, Leland H. Lyon et al. / Center Rock Inc. (Berlin, US)
A down-the-hole drilling apparatus comprising:…

Polycrystalline Diamond Compacts, Method of Fabricating Same, and Various Applications
US 08616306 B2, Dec. 31, 2013, Includes diamond, Kenneth E. Bertagnolli et al. / US Synthetic Corporation (Orem, US)
A polycrystalline diamond compact, comprising:…

Resonance Enhanced Drilling: Method and Apparatus
US 08453761 B2, June 4, 2013, 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, Marian Wiercigroch / University Court of the University of Aberdeen (Aberdeen, GB)
A drilling module comprising:…

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