(19)
(11) EP 1 346 128 A1

(12)

(43) Date of publication:
24.09.2003 Bulletin 2003/39

(21) Application number: 01996667.0

(22) Date of filing: 15.11.2001
(51) International Patent Classification (IPC)7E21B 17/10, E21B 23/00, E21B 34/10
(86) International application number:
PCT/GB0105/057
(87) International publication number:
WO 0204/0823 (23.05.2002 Gazette 2002/21)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 20.11.2000 GB 0028243

(71) Applicant: Toolbox Drilling Solutions Ltd
Aberdeen AB15 5EP (GB)

(72) Inventors:
  • RUSSELL, Mark Alexander
    Low Bradfield,Sheffield S61 LB (GB)
  • OLLERENSHAW, Andrew
    Loxley,Sheffield S6 6RB (GB)

(74) Representative: Lunt, Mark George Francis et al
Harrison Goddard Foote,Fountain Precinct,Leopold Street
Sheffield S1 2QD
Sheffield S1 2QD (GB)

   


(54) ADJUSTABLE STABILISER FOR DIRECTIONAL DRILLING