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1. (WO2011017582) FUNCTIONALLY GRADED POLYCRYSTALLINE DIAMOND INSERT
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2011/017582 International Application No.: PCT/US2010/044640
Publication Date: 10.02.2011 International Filing Date: 06.08.2010
IPC:
E21B 10/56 (2006.01) ,E21B 10/50 (2006.01) ,E21B 10/36 (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
46
characterised by wear resisting parts, e.g. diamond inserts
56
Button-type inserts
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
46
characterised by wear resisting parts, e.g. diamond inserts
50
the bit being of roller type
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
36
Percussion drill bits
Applicants:
FANG, Yi [CN/US]; US (UsOnly)
BELLIN, Federico [IT/US]; US (UsOnly)
STEWART, Michael [US/US]; US (UsOnly)
MOURIK, Nephi [US/US]; US (UsOnly)
CARIVEAU, Peter T. [US/US]; US (UsOnly)
SMITH INTERNATIONAL, INC. [US/US]; 1310 Rankin Rd. Houston, Texas 77073, US (AllExceptUS)
Inventors:
FANG, Yi; US
BELLIN, Federico; US
STEWART, Michael; US
MOURIK, Nephi; US
CARIVEAU, Peter T.; US
Agent:
HOLTHUS, Lisa K.; Smith International, Inc. Patent Services 1310 Rankin Rd. Houston, Texas 77073, US
Priority Data:
61/232,15107.08.2009US
Title (EN) FUNCTIONALLY GRADED POLYCRYSTALLINE DIAMOND INSERT
(FR) GARNITURE EN DIAMANT POLYCRISTALLIN À GRADIENT FONCTIONNEL
Abstract:
(EN) PCD inserts comprise a PCD body having multiple FG-PCD regions with decreasing diamond content moving from a body outer surface to a metallic substrate. The diamond content changes in gradient fashion by changing metal binder content. A region adjacent the outer surface comprises 5 to 20 percent by weight metal binder, and a region remote from the surface comprises 15 to 40 percent by weight metal binder. One or more transition regions are interposed between the PCD body and substrate. The transition region comprises PCD, binder metal, and a carbide, comprises a metal binder content less than that present in the PCD body region positioned next to it.
(FR) Des garnitures en diamant polycristallin (PCD) comprennent un corps en PCD qui présente plusieurs régions FG-PCD dont la teneur en diamant diminue depuis la surface extérieure du corps jusqu'à un substrat métallique. La teneur en diamant change de manière progressive par modification de la teneur en liant métallique. Une partie adjacente à la surface extérieure comprend entre 5 et 20 pour cent en poids de liant métallique et une partie éloignée de la surface comprend de 15 à 40 pour cent en poids de liant métallique. Une ou plusieurs régions de transition sont intercalées entre le corps en PCD et le substrat. La région de transition comprend un PCD, un métal de liant et un carbure et sa teneur en liant métallique est inférieure à celle présente dans la partie du corps en PCD située à côté d'elle.
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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, TH, 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, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (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, 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)