EP 2257686 A2 20101208 - DOWNHOLE TOOL BEARING SYSTEM CONTAINING DIAMOND ENHANCED MATERIALS
Title (en)
DOWNHOLE TOOL BEARING SYSTEM CONTAINING DIAMOND ENHANCED MATERIALS
Title (de)
DIAMANTVERSTÄRKTE MATERIALIEN ENTHALTENDES BOHRLOCHWERKZEUGLAGERSYSTEM
Title (fr)
SYSTÈME DE PALIER D'OUTIL DE FOND DE TROU CONTENANT DES MATÉRIAUX AMÉLIORÉS AU DIAMANT
Publication
Application
Priority
- US 2009034271 W 20090217
- US 2971908 P 20080219
Abstract (en)
[origin: US2009205873A1] Downhole tool bearings are provided with diamond enhanced materials. The diamond enhanced materials comprise diamond grains in a matrix of tungsten or silicon carbide. A brazed diamond grit or diamond particles coated with a reactive braze may be utilized for bearing applications. Bearing rings formed at least in part with diamond enhanced material are installed on at least one of the bearing pin journal, the nose and the cone cavity. The bearing rings may be continuous rings or partial rings and attached to the journal pin or cone cavity. These may include thrust bearings, rollers, roller race, balls and ball races made of diamond enhanced material. These bearing surfaces also are formed at least in part with diamond enhanced material and attached to portions of the journal or cone bearing surfaces.
IPC 8 full level
E21B 10/48 (2006.01); E21B 10/02 (2006.01)
CPC (source: EP US)
E21B 10/22 (2013.01 - EP US)
Citation (search report)
See references of WO 2009105420A2
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 TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
US 2009205873 A1 20090820; CA 2714749 A1 20090827; EP 2257686 A2 20101208; WO 2009105420 A2 20090827; WO 2009105420 A3 20091015
DOCDB simple family (application)
US 36778709 A 20090209; CA 2714749 A 20090217; EP 09712067 A 20090217; US 2009034271 W 20090217