(19)

(11)

EP 3 209 855 A1

(12)

(43) Date of publication: 30.08.2017 Bulletin 2017/35 (21) Application number: 15787867.9 (22) Date of filing: 23.10.2015

(51) International Patent Classification (IPC):  E21B 33/128(2006.01) E21B 43/26(2006.01) E21B 33/129(2006.01) (86) International application number: PCT/US2015/057168 (87) International publication number: WO 2016/065291 (28.04.2016 Gazette 2016/17)

(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 (30) Priority: 23.10.2014 US 201462067594 P (71) Applicant: Hydrawell Inc. Houston, Texas 77066 (US)	(72) Inventors: CORONADO, Martin P. Cypress, Texas 77433 (US) GARCIA, Luis A. Kingwood, Texas 77345 (US) PLANTE, Mark E. Tomball, Texas 77377 (US) BENNETT, Rodney D. Houston, Texas 77069 (US) (74) Representative: Håmsø Patentbyrå AS  P.O. Box 171 4301 Sandnes 4301 Sandnes (NO)