(19)
(11) EP 1 461 510 A1

(12)

(43) Date of publication:
29.09.2004 Bulletin 2004/40

(21) Application number: 02797431.0

(22) Date of filing: 18.12.2002
(51) International Patent Classification (IPC)7E21B 43/04, E21B 43/11
(86) International application number:
PCT/US2002/040696
(87) International publication number:
WO 2003/052238 (26.06.2003 Gazette 2003/26)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR
Designated Extension States:
AL LT LV MK RO

(30) Priority: 18.12.2001 US 341779 P

(71) Applicant: Sand Control, Inc.
Katy, TX 77450 (US)

(72) Inventor:
  • JOHNSON, Michael, H.
    Katy, TX 77450 (US)

(74) Representative: McCall, John Douglas 
W.P. THOMPSON & CO.Coopers BuildingChurch Street
Liverpool L1 3AB
Liverpool L1 3AB (GB)

   


(54) A DRILLING METHOD FOR MAINTAINING PRODUCTIVITY WHILE ELIMINATING PERFORATING AND GRAVEL PACKING