(19)

(11)

EP 2 807 325 A2

(12)

(88) Date of publication A3: 17.07.2014 (43) Date of publication: 03.12.2014 Bulletin 2014/49 (21) Application number: 13704996.1 (22) Date of filing: 24.01.2013

(51) International Patent Classification (IPC):  E21B 7/124(2006.01) E21B 7/128(2006.01) (86) International application number: PCT/GB2013/000029 (87) International publication number: WO 2013/110917 (01.08.2013 Gazette 2013/31)

(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 (30) Priority: 24.01.2012 GB 201201131 (71) Applicant: Fugro Seacore Limited Bickland Industrial Estate Falmouth Cornwall TR11 4TA (GB)	(72) Inventors: GLEADOWE, John R. Y. Falmouth TR11 5RN (GB) HACKWELL, Paul C. C. Falmouth Cornwall TR11 4AR (GB) BRENNAN, James Helston Cornwall TR13 9QQ (GB) THORNTON, Laurie Dursley Gloucestershire GL11 6EE (GB) (74) Representative: Turner, Richard Charles  Room 3, The Rufus Centre Steppingley Road Flitwick Bedfordshire MK45 1AH Flitwick Bedfordshire MK45 1AH (GB)