Global Patent Index - EP 2173961 A2

EP 2173961 A2 20100414 - PDC CUTTER WITH OVAL CROSS-SECTION

Title (en)

PDC CUTTER WITH OVAL CROSS-SECTION

Title (de)

PDC-SCHNEIDVORRICHTUNG MIT OVALEM QUERSCHNITT

Title (fr)

ELÉMENT DE COUPE EN COMPOSITE DE DIAMANT POLYCRISTALLIN (PDC) À COUPE TRANSVERSALE OVALE

Publication

EP 2173961 A2 (EN)

Application

EP 08772346 A

Priority

  • US 2008068985 W
  • US 94759107 P

Abstract (en)

[origin: US2009008155A1] A drag bit having cutting elements, wherein the cross section of the cutting elements is an oval shape, wherein in one embodiment the major axis is perpendicular to the surface of the drag bit blade. A method is also included, wherein the method comprises using a milling bit having an oval cross section that thereby produces pockets in the drag bit blades for receiving the oval shaped cutting elements. Use of the oval bit also results in a half oval formed at the closed end of the pocket.

IPC 8 full level

E21B 10/567 (2006.01); E21B 10/42 (2006.01)

CPC (source: EP)

E21B 10/54 (2013.01); E21B 10/55 (2013.01); E21B 10/5673 (2013.01); E21B 10/573 (2013.01)

Citation (search report)

See references of WO 2009006510A2

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 MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

US 2009008155 A1 20090108; EP 2173961 A2 20100414; WO 2009006510 A2 20090108; WO 2009006510 A3 20100401

DOCDB simple family (application)

US 13889108 A 20080613; EP 08772346 A 20080702; US 2008068985 W 20080702