(19)
(11) EP 1 232 330 A1

(12)

(43) Date of publication:
21.08.2002 Bulletin 2002/34

(21) Application number: 99962880.3

(22) Date of filing: 23.11.1999
(51) International Patent Classification (IPC)7E21B 43/25
(86) International application number:
PCT/US9928/060
(87) International publication number:
WO 0104/0623 (07.06.2001 Gazette 2001/23)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(71) Applicant: Applied Seismic Research Corporation
Plano, TX 75093 (US)

(72) Inventors:
  • KOSTROV, Sergey, A.
    Plano, TX 75093 (US)
  • WOODEN, William, O.
    Plano, TX 75093 (US)

(74) Representative: Howick, Nicholas Keith et al
CARPMAELS & RANSFORD43 Bloomsbury Square
London WC1A 2RA
London WC1A 2RA (GB)

   


(54) METHOD AND APPARATUS FOR SEISMIC STIMULATION OF FLUID-BEARING FORMATIONS