(19)
(11) EP 1 549 824 A2

(12)

(88) Date of publication A3:
05.08.2004

(43) Date of publication:
06.07.2005 Bulletin 2005/27

(21) Application number: 03759400.9

(22) Date of filing: 22.09.2003
(51) International Patent Classification (IPC)7E21B 43/10
(86) International application number:
PCT/US2003/029859
(87) International publication number:
WO 2004/027205 (01.04.2004 Gazette 2004/14)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 20.09.2002 US 412542 P

(71) Applicant: Enventure Global Technology
Houston, TX 77084 (US)

(72) Inventors:
  • RING, Lev
    Houston, TX 77077 (US)
  • WATSON, Brock, Wayne
    Carrollton, TX 75006 (US)
  • BRISCO, David, Paul
    Duncan, OK 73533 (US)

(74) Representative: Giles, Ashley Simon 
HASELTINE LAKE,Redcliff Quay120 Redcliff Street
Bristol BS1 6HU
Bristol BS1 6HU (GB)

   


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