(19)
(11) EP 1 201 875 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.02.2003 Bulletin 2003/06

(43) Date of publication A2:
02.05.2002 Bulletin 2002/18

(21) Application number: 01309150.9

(22) Date of filing: 29.10.2001
(51) International Patent Classification (IPC)7: E21B 47/09, E21B 23/00, E21B 43/10
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 28.10.2000 GB 0026458

(71) Applicant: Quartech Engineering Limited
Tonbridge, Kent TN10 4NT (GB)

(72) Inventors:
  • French Clive John
    5100 Jambes (BE)
  • Batten, Glen
    Castleford, West Yorkshire WF10 4BP (GB)

(74) Representative: Shanks, Andrew et al
Cruikshank & Fairweather, 19 Royal Exchange Square
Glasgow G1 3AE
Glasgow G1 3AE (GB)

   


(54) Downhole tool


(57) A method of locating a tubing string in a bore, the method comprising the steps: providing a device defining a restriction-engaging member; locating the device on the lower end of a tubing string; and then running the tubing string into the bore until the member engages a restriction in the bore and the device and the tubing is prevented from advancing further by the restriction. The member is then re-configured to permit further advancement of the device and tubing relative to the restriction and the device and tubing moved a predetermined distance relative to the restriction to position the tubing at a desired location in the bore.









Search report