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EP 3 245 381 A1

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(43) Date of publication: 22.11.2017 Bulletin 2017/47 (21) Application number: 16737957.7 (22) Date of filing: 15.01.2016

(51) International Patent Classification (IPC):  E21B 43/119(2006.01) E21B 43/263(2006.01) E21B 43/118(2006.01) (86) International application number: PCT/US2016/013579 (87) International publication number: WO 2016/115452 (21.07.2016 Gazette 2016/29)

(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: 16.01.2015 US 201514598868 (71) Applicant: GeoDynamics, Inc. Millsap, TX 76066 (US)	(72) Inventors: HARDESTY, John, T. Millsap, TX 76066 (US) CLARK, Nathan, G. Millsap, TX 76066 (US) ROLLINS, James, A. Millsap, TX 76066 (US) WESSON, David, S. Millsap, TX 76066 (US) (74) Representative: Gosnall, Toby  Barker Brettell LLP 100 Hagley Road Edgbaston Birmingham B16 8QQ Edgbaston Birmingham B16 8QQ (GB)