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1. (WO2013056047) POLYCRYSTALLINE COMPACTS INCLUDING GRAINS OF HARD MATERIAL, EARTH BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS AND TOOLS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2013/056047    International Application No.:    PCT/US2012/059953
Publication Date: 18.04.2013 International Filing Date: 12.10.2012
IPC:
E21B 10/46 (2006.01), C01B 31/06 (2006.01), B01J 3/06 (2006.01), B24D 3/10 (2006.01)
Applicants: BAKER HUGHES INCORPORATED [US/US]; P.O. Box 4740 Houston, TX 77210-4740 (US) (For All Designated States Except US).
SCOTT, Dan, E. [US/US]; (US) (US only).
DIGIOVANNI, Anthony, A. [US/US]; (US) (US only).
AGRAWAL, Gaurav [US/US]; (US) (US only).
CHAKRABORTY, Soma [US/US]; (US) (US only)
Inventors: SCOTT, Dan, E.; (US).
DIGIOVANNI, Anthony, A.; (US).
AGRAWAL, Gaurav; (US).
CHAKRABORTY, Soma; (US)
Agent: WELBORN, Brian, S.; Intellectual Property Counsel Baker Hughes Incorporated P.O. Box 4740 Houston, TX 77210-4740 (US)
Priority Data:
61/547,472 14.10.2011 US
Title (EN) POLYCRYSTALLINE COMPACTS INCLUDING GRAINS OF HARD MATERIAL, EARTH BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS AND TOOLS
(FR) COMPACTS POLYCRISTALLINS COMPRENANT DES GRAINS DE MATIÈRE DURE, OUTILS DE FORAGE DU SOL COMPRENANT DE TELS COMPACTS ET PROCÉDÉS DE FORMATION DE TELS COMPACTS ET DE TELS OUTILS
Abstract: front page image
(EN)Polycrystalline compacts include a polycrystalline superabrasive material comprising a first plurality of grains of superabrasive material having a first average grain size and a second plurality of grains of superabrasive material having a second average grain size smaller than the first average grain size. The first plurality of grains is dispersed within a substantially continuous matrix of the second plurality of grains. Earth-boring tools may include a body and at least one polycrystalline compact attached thereto. Methods of forming polycrystalline compacts may include coating relatively larger grains of superabrasive material with relatively smaller grains of superabrasive material, forming a green structure comprising the coated grains, and sintering the green structure. Other methods include mixing diamond grains with a catalyst and subjecting the mixture to a pressure greater than about five gigapascals (5.0 GPa) and a temperature greater than about 1,300°C to form a polycrystalline diamond compact.
(FR)L'invention concerne des compacts polycristallins qui comprennent une matière superabrasive polycristalline comprenant une première pluralité de grains de matière superabrasive ayant une première dimension moyenne de grain et une seconde pluralité de grains de matière superabrasive ayant une seconde dimension moyenne de grain plus petite que la première dimension moyenne de grain. La première pluralité de grains est dispersée à l'intérieur d'une matrice sensiblement continue de la seconde pluralité de grains. Des outils de forage du sol peuvent comprendre un corps et au moins un compact polycristallin attaché à celui-ci. Des procédés de formation de compacts polycristallins peuvent comprendre un revêtement de grains relativement plus grands de matière superabrasive par des grains relativement plus petits de matière superabrasive, un façonnage d'une structure verte comprenant les grains revêtus et un frittage de la structure verte. D'autres procédés consistent à mélanger des grains de diamant avec un catalyseur et à soumettre le mélange à une pression supérieure à environ cinq gigapascals (5,0 GPa) et une température supérieure à environ 1 300°C pour former un compact de diamant polycristallin.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, 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, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, 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, RS, 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)