SG11201907151PA - Toe casing - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 09 August 2018 (09.08.2018) WIP0 I PCT IiiimmounnonolomolommoolioloiommovoimIE (10) International Publication Number WO 2018/145027 Al 50 FIG. 2 (51) International Patent Classification: E21B 17/00 (2006.01) E21B 17/14 (2006.01) E21B 17/08 (2006.01) (21) International Application Number: PCT/US2018/016900 (22) International Filing Date: 05 February 2018 (05.02.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/455,216 06 February 2017 (06.02.2017) US 15/884,996 31 January 2018 (31.01.2018) US (72) Inventor; and (71) Applicant: DZIEKONSKI, Mitchell Z. [US/US]; PO Box 1527, Stafford, Texas 77497 (US). (74) Agent: YODER, Patrick S. et al.; P.O. Box 692289, Hous- ton, Texas 77269 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) (54) Title: TOE CASING 52 1 46 N O X 44 kf) pp 71' 1-1 (57) : A toe casing is made of a material different from conventional casing, and may be deployed in an open-hole section of a well that is not economically accessible by conventional casing. The toe casing may be made of a material that more easily conforms to the well bore, such as aluminum alloy, titanium alloy, or a composite material. The toe casing may be secured to and deployed at the end of a conventional casing string for the purpose of assisting the casing in reaching a desired depth, allowing for improved hydrocarbon production.