(19)

(11)

EP 2 764 162 A1

(12)

(43) Date of publication: 13.08.2014 Bulletin 2014/33 (21) Application number: 11778722.6 (22) Date of filing: 07.10.2011

(51) International Patent Classification (IPC):  E01D 21/00(2006.01) (86) International application number: PCT/TH2011/000046 (87) International publication number: WO 2013/052017 (11.04.2013 Gazette 2013/15)

(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 (71) Applicant: NRS Consulting Co. Ltd. Bangkok 10400 (TH)	(72) Inventor: PEDRO BAE, Martin N-6508 Kristiansund (NO) (74) Representative: Callaghan, Dayle Anne  Rouse IP Limited 11th Floor, Exchange Tower 1 Harbour Exchange Square London E14 9GE London E14 9GE (GB)