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1. (WO2010078182) ENGINEERED BEARING SURFACE FOR ROCK DRILLING BIT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/078182 International Application No.: PCT/US2009/069373
Publication Date: 08.07.2010 International Filing Date: 23.12.2009
IPC:
E21B 10/22 (2006.01) ,C09D 163/00 (2006.01) ,C09D 175/04 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
10
Drill bits
08
Roller bits
22
characterised by bearing, lubrication or sealing details
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
D
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
163
Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
D
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
175
Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
04
Polyurethanes
Applicants:
BAKER HUGHES INCORPORATED [US/US]; P.O. Box 4740 Houston, TX 77210, US (AllExceptUS)
LIN, Chih [US/US]; US (UsOnly)
DICK, Aaron, J. [US/US]; US (UsOnly)
Inventors:
LIN, Chih; US
DICK, Aaron, J.; US
Agent:
WELBORN, Brian, S.; Intellectual Property Counsel Baker Hughes Incorporated P.O. Box 4740 Houston, TX 77210-4740, US
Priority Data:
61/141,43330.12.2008US
Title (EN) ENGINEERED BEARING SURFACE FOR ROCK DRILLING BIT
(FR) SURFACE ÉLABORÉE DE PALIER POUR TRÉPAN POUR ROCHE
Abstract:
(EN) A drill bit bearing having a treated surface and method for preparing the same is provided. The method includes the steps of polishing at least one contacting surface of the bearing with an abrasive paste to a finish of less than about 10 μin Ra. The surface of the polishing instrument has a coating that includes a mixture of an epoxy cement and a polymer.
(FR) L'invention porte sur un palier pour trépan comportant une surface traitée et sur un procédé pour sa préparation. Le procédé comprend les étapes de polissage d'au moins une surface de contact du palier au moyen d'une pâte abrasive afin d'obtenir un fini de moins qu'environ 250 micromètres. La surface de l'instrument de polissage comporte un revêtement comprenant un mélange d'un ciment époxy et d'un polymère.
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP2373867