(19)
(11) EP 0 436 605 A1

(12)

(43) Date of publication:
17.07.1991 Bulletin 1991/29

(21) Application number: 89910892.0

(22) Date of filing: 21.09.1989
(51) International Patent Classification (IPC): 
E21B 43/ 01( . )
E21B 43/ 013( . )
(86) International application number:
PCT/GB1989/001107
(87) International publication number:
WO 1990/003492 (05.04.1990 Gazette 1990/08)
(84) Designated Contracting States:
FR GB

(30) Priority: 22.09.1988 GB 19880022268

(71) Applicants:
  • MOBIL OIL CORPORATION
    Fairfax, Virginia 22037-0001 (US)
  • FSSL LIMITED
    Aberdeenshire AB4 9RF (GB)
  • CAMERON OFFSHORE ENGINEERING LIMITED
    Surrey GU21 1DG (GB)

(72) Inventors:
  • TORGERSEN, Richard, Curtis
    Aberdeen AB2 4BB (GB)
  • LAWSON, John, Ernest Petrarch House Horsell Park
    Woking Surrey GU21 4LW (GB)
  • HATTON, Stephen, Anthony
    Woking Surrey GU22 9BQ (GB)

(74) Representative: Jones, Alan John, et al 
CARPMAELS & RANSFORD 43 Bloomsbury Square
London, WC1A 2RA
London, WC1A 2RA (GB)

   


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