(19)
(11) EP 1 216 341 A2

(12)

(88) Date of publication A3:
30.08.2001

(43) Date of publication:
26.06.2002 Bulletin 2002/26

(21) Application number: 00971162.3

(22) Date of filing: 03.10.2000
(51) International Patent Classification (IPC)7E21B 19/08
(86) International application number:
PCT/BR0000/115
(87) International publication number:
WO 0125/652 (12.04.2001 Gazette 2001/15)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 04.10.1999 BR 9904223

(71) Applicants:
  • Teixeira Clo, Dalvio Emilio
    CEP-30140-091 Minas Gerais (BR)
  • Teixeira Clo, Marcos Eugenio
    CEP-30350-010 Minas Gerais (BR)
  • Feliciano de Souza, Marco Antonio
     (BR)

(72) Inventors:
  • Teixeira Clo, Dalvio Emilio
    CEP-30140-091 Minas Gerais (BR)
  • Teixeira Clo, Marcos Eugenio
    CEP-30350-010 Minas Gerais (BR)
  • Feliciano de Souza, Marco Antonio
     (BR)

(74) Representative: Davila Baz, Angel et al
c/o Clarke, Modet & Co.,Goya, 11
28001 Madrid
28001 Madrid (ES)

   


(54) TORQUE TRANSMISSION SYSTEM FOR HELICAL DRILLING TOOLS