(19)
(11) EP 1 389 261 A1

(12)

(43) Date of publication:
18.02.2004 Bulletin 2004/08

(21) Application number: 02724478.9

(22) Date of filing: 09.05.2002
(51) International Patent Classification (IPC)7E21B 37/08, F42B 1/00
(86) International application number:
PCT/GB2002/002155
(87) International publication number:
WO 2002/095186 (28.11.2002 Gazette 2002/48)
(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: 19.05.2001 GB 0112294

(71) Applicant: Waterwell International UK Limited
Cardiff CF14 3LX (GB)

(72) Inventor:
  • CHALLACOMBE, Scott, Robert
    Huntington Beach CA 92648 (US)

(74) Representative: Evans, Huw David Duncan 
Urquhart-Dykes & Lord,Three Trinity Court,21-27 Newport Road
Cardiff CF24 OAA
Cardiff CF24 OAA (GB)

   


(54) WELL CLEANING APPARATUS