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1. (WO2011081775) DRILL BITS WITH AXIALLY-TAPERED WATERWAYS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2011/081775    International Application No.:    PCT/US2010/058871
Publication Date: 07.07.2011 International Filing Date: 03.12.2010
IPC:
E21B 10/02 (2006.01), E21B 10/48 (2006.01)
Applicants: LONGYEAR TM, INC.; 10808 South River Front Parkway, Suite 600 South Jordan, UT 84095 (US) (For All Designated States Except US).
PEARCE, Cody, A.; (US) (For US Only).
RUPP, Michael, D.; (US) (For US Only).
LAMBERT, Christian, M.; (US) (For US Only)
Inventors: PEARCE, Cody, A.; (US).
RUPP, Michael, D.; (US).
LAMBERT, Christian, M.; (US)
Agent: ISRAELSEN, R., Burns; Workman Nydegger 1000 Eagle Gate Tower 60 East South Temple Salt Lake City, UT 84111 (US)
Priority Data:
12/638,229 15.12.2009 US
Title (EN) DRILL BITS WITH AXIALLY-TAPERED WATERWAYS
(FR) TRÉPANS DE FORAGE AVEC PASSAGES D'EAU AXIALEMENT CONIQUES
Abstract: front page image
(EN)Implementations of the present invention include drilling tools having axially tapered waterways that can increase flushing and bit life, while also decreasing clogging. According to some implementations of the present invention, the waterways can be radially tapered in addition to being axially tapered. The axially-tapered waterways can include notches extending into the cutting face of the drilling tools and/or slots enclosed within the crown of the drilling tools. Implementations of the present invention also include drilling systems including drilling tools having axially-tapered waterways, and methods of forming drilling tools having axially-tapered waterways.
(FR)La présente invention concerne des outils de forage comportant des passages d'eau axialement coniques qui peuvent augmenter le rinçage et la durée de service du trépan, tout en diminuant également le bouchage. Selon certaines conceptions de la présente invention, les passages d'eau peuvent être radialement coniques en plus d'être axialement coniques. Les passages d'eau axialement coniques peuvent comporter des encoches qui s'étendent dans la face de coupe des outils de forage, et/ou des fentes qui sont logées à l'intérieur de la couronne des outils de forage. La présente invention comprend également des systèmes de forage comprenant des outils de forage qui comportent des passages d'eau axialement coniques, et des procédés de production d'outils de forage qui comportent des passages d'eau axialement coniques.
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 Org. (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (EAPO) (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, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)