EP 2425089 A2 20120307 - BEARING BLOCKS FOR DRILL BITS, DRILL BIT ASSEMBLIES INCLUDING BEARING BLOCKS AND RELATED METHODS
Title (en)
BEARING BLOCKS FOR DRILL BITS, DRILL BIT ASSEMBLIES INCLUDING BEARING BLOCKS AND RELATED METHODS
Title (de)
LAGERBLÖCKE FÜR BOHRKRONEN, BOHRKRONENANORDNUNGEN MIT LAGERBLÖCKEN UND ZUGEHÖRIGE VERFAHREN
Title (fr)
BLOCS DE SUPPORT POUR TRÉPANS, ENSEMBLES DE TRÉPANS COMPRENANT DES BLOCS DE SUPPORT ET PROCÉDÉS ASSOCIÉS
Publication
Application
Priority
- US 2010032370 W 20100426
- US 17441209 P 20090430
Abstract (en)
[origin: US2010276200A1] Methods of drilling subterranean formations include coupling at least one bearing block having an initial thickness to a drill bit, engaging a formation with the drill bit within an initial depth of cut range, and reducing the initial thickness of the bearing block by contacting the formation to cause the initial depth of cut range to be at least partially increased. Methods of forming drill bits for drilling subterranean formations include forming at least one rubbing surface of at least one bearing block from at least one material exhibiting a reduced coefficient of friction and coupling the at least one bearing block to the drill bit. Drill bit assemblies include at least one bearing block having a distal portion configured to provide an initial depth of cut range and a base portion configured to provide an increased depth of cut range greater than the initial depth of cut range.
IPC 8 full level
E21B 10/42 (2006.01); E21B 10/54 (2006.01); E21B 10/60 (2006.01)
CPC (source: EP US)
E21B 10/43 (2013.01 - EP US); E21B 10/55 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
US 2010276200 A1 20101104; BR PI1014619 A2 20160405; EP 2425089 A2 20120307; EP 2425089 A4 20140604; WO 2010126817 A2 20101104; WO 2010126817 A3 20110303; WO 2010126817 A4 20110421
DOCDB simple family (application)
US 76698810 A 20100426; BR PI1014619 A 20100426; EP 10770172 A 20100426; US 2010032370 W 20100426