EP 2452035 A2 20120516 - BACKUP CUTTING ELEMENTS ON NON-CONCENTRIC REAMING TOOLS
Title (en)
BACKUP CUTTING ELEMENTS ON NON-CONCENTRIC REAMING TOOLS
Title (de)
ERSATZSCHNEIDEELEMENTE AUF NICHT KONZENTRISCHEN REIBWERKZEUGEN
Title (fr)
ÉLÉMENTS DE COUPE DE RÉSERVE OU OUTILS D'ALÉSAGE NON CONCENTRIQUES
Publication
Application
Priority
- US 2010041084 W 20100706
- US 49851609 A 20090707
Abstract (en)
[origin: US2011005841A1] An apparatus for reaming or enlarging a borehole comprising a bi-center drill bit having backup cutters thereon.
IPC 8 full level
E21B 10/26 (2006.01); E21B 10/43 (2006.01)
CPC (source: EP US)
E21B 10/265 (2020.05 - EP US); E21B 10/62 (2013.01 - EP US)
Designated contracting state (EPC)
AL 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 2011005841 A1 20110113; BR 112012000466 A2 20160216; EP 2452035 A2 20120516; EP 2452035 A4 20150826; RU 2012103936 A 20130820; WO 2011005774 A2 20110113; WO 2011005774 A3 20110505; WO 2011005774 A4 20110603
DOCDB simple family (application)
US 49851609 A 20090707; BR 112012000466 A 20100706; EP 10797731 A 20100706; RU 2012103936 A 20100706; US 2010041084 W 20100706