(19)
(11) EP 2 467 558 A2

(12)

(88) Date of publication A3:
30.06.2011

(43) Date of publication:
27.06.2012 Bulletin 2012/26

(21) Application number: 10810541.2

(22) Date of filing: 18.08.2010
(51) International Patent Classification (IPC): 
E21B 10/54(2006.01)
E21B 10/62(2006.01)
 E21B 10/42(2006.01)
(86) International application number:
PCT/US2010/045878
(87) International publication number:
WO 2011/022474 (24.02.2011 Gazette 2011/08)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30) Priority: 18.08.2009 US 234776 P

(71) Applicant: Baker Hughes Incorporated
Houston, TX 77210 (US)

(72) Inventors:
  • SCOTT, Danny, E.
    Montgomery TX 77356 (US)
  • SINOR, L., Allen
    Conroe TX 77302 (US)

(74) Representative: Jeffrey, Philip Michael 
Dehns St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) METHOD OF FORMING POLYSTALLINE DIAMOND ELEMENTS, POLYCRYSTALLINE DIAMOND ELEMENTS, AND EARTH BORING TOOLS CARRYING SUCH POLYCRYSTALLINE DIAMOND ELEMENTS