(19)
(11) EP 1 070 196 A1

(12)

(43) Date of publication:
24.01.2001 Bulletin 2001/04

(21) Application number: 00907123.4

(22) Date of filing: 02.02.2000
(51) International Patent Classification (IPC)7E21B 47/01, E21B 47/06, E21B 23/08
(86) International application number:
PCT/US0002/748
(87) International publication number:
WO 0046/485 (10.08.2000 Gazette 2000/32)
(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

(30) Priority: 05.02.1999 GB 9902596

(71) Applicants:
  • CHEVRON U.S.A. INC.
    San Ramon, CA 94583-4289 (US)
  • SENSOR DYNAMICS LIMITED
    Winchester, Hampshire SO21 1BQ (GB)

(72) Inventors:
  • KLUTH, E. L. E.
    Alresford,Hampshire SO24 9DD (GB)
  • VARNHAM, M. P.
    Hampshire SO24 9HF (GB)
  • CLOWES, J. R.
    Alresford,Hampshire SO24 9PA (GB)
  • CRAWLEY, C., M.
    Danville, CA 94506 (US)
  • KUTLIK, Roy
    Oakland, CA 94611 (US)

(74) Representative: Nash, David Allan 
Haseltine Lake & Co.,Imperial House, 15-19 Kingsway
London WC2B 6UD
London WC2B 6UD (GB)

   


(54) APPARATUS AND METHOD FOR ENHANCING REMOTE SENSOR PERFORMANCE