(19)

(11)

EP 3 322 966 A1

(12)

(43) Date of publication: 23.05.2018 Bulletin 2018/21 (21) Application number: 16825238.5 (22) Date of filing: 15.07.2016

(51) International Patent Classification (IPC):  G01N 1/08(2006.01) G01N 33/24(2006.01) G01N 3/42(2006.01) E02D 1/04(2006.01) (86) International application number: PCT/US2016/042449 (87) International publication number: WO 2017/011731 (19.01.2017 Gazette 2017/03)

(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 Designated Validation States: MA MD (30) Priority: 16.07.2015 US 201562193414 P (71) Applicant: ConocoPhillips Company Houston, TX 77079 (US)	(72) Inventor: HOLLOWAY, George Leon Houston, Texas 77079 (US) (74) Representative: Simpson, Paul Christopher  ConocoPhillips (U.K.) Limited Legal Floor 6, Portman House 2 Portman Street London, Greater London W1H 6DU London, Greater London W1H 6DU (GB)