(19)
(11) EP 2 497 578 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.06.2013 Bulletin 2013/23

(43) Date of publication A2:
12.09.2012 Bulletin 2012/37

(21) Application number: 12158317.3

(22) Date of filing: 06.03.2012
(51) International Patent Classification (IPC): 
B08B 9/093(2006.01)
B05B 3/02(2006.01)
B01F 5/02(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 07.03.2011 GB 201103751

(71) Applicant: Geoprober Drilling Limited
Aberdeen, Aberdeenshire AB10 1FW (GB)

(72) Inventors:
  • Bamford, Antony Stephen
    Aberdeen, Aberdeenshire AB15 7YL (GB)
  • Lilley, Vincent Van
    Aberdeen, Aberdeenshire AB15 4EY (GB)

(74) Representative: Orr, Robert 
Urquhart-Dykes & Lord LLP Tower North Central Merrion Way
Leeds LS2 8PA
Leeds LS2 8PA (GB)

   


(54) Remediation of underwater fluid storage tanks


(57) An underwater fluid storage tank remediation assembly (20) is disclosed which comprises: a flexible pipe (28) which can be inserted into an underwater fluid storage tank (24); a fluid injection device (22) coupled to the flexible pipe and arranged so that fluid flowing down the pipe passes into the fluid injection device, the fluid injection device comprising at least one fluid outlet for directing a jet (36) of fluid into the tank to agitate contaminants (8) in the tank; a pipe gripping and rotation device (30) which can be selectively actuated to grip and rotate the flexible pipe relative to the tank, to facilitate movement of the fluid injection device coupled to the pipe within the tank; a motivating arrangement (32) for generating a motive force which can be used to steer the fluid injection device around the tank when the flexible pipe is rotated by the pipe gripping and rotation device; and a contaminant withdrawal arrangement (34) for withdrawing contaminants agitated by the fluid injection device from the tank.







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Search report