Patent AU-2012346900-B2 (AU)
Title: Drillstring valve
Inventor: LEE PAUL BERNARD
IPC: E21B21/00
Filed: 2012-12-17
Granted: 2015-07-02
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date W O 2013/092532 Al 27 June 2013 (27.06.2013) W I PO I P CT (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every E21B 34/14 (2006.01) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, (21) International Application Number: BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, PCT/EP2012/075862 DO, DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, (22) International Filing Date: HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, 17 December 2012 (17.12.2012) KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, (25) Filing Language: English NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, (26) Publication Language: English RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, (30) Priority Data: ZM, ZW. 11195057.2 21 December 2011 (21.12.2011) EP (84) Designated States (unless otherwise indicated, for every (71) Applicant (for all designated States except US): kind of regional protection available): ARIPO (BW, GH, SCHOELLER-BLECKMANN OILFIELD EQUIP- GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, MENT AG [AT/AT]; Hauptstr. 2, A-2630 Ternitz (AT). UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, (72) Inventor; and TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, (71) Applicant (for US only): LEE, Paul Bernard [CA/CA]. EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, 2716 Conrad DR NW, Calgary, Alberta T2L [B4 (CA).' 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, (74) Agent: DILG, Andreas; Dilg, Haeusler, Schindelmann ML, MR, NE, SN, TD, TG). Patentanwaltsgesellschaft mbH, Leonrodstr. 58, 80636 Published: Munich (DE). with international search report (Art. 21(3)) (54) Title: DRILLSTRING VALVE (57) Abstract: It is described an embodiment of adrillstring valve (100) comprising an inlet mount 136 able to a drillstring, an outlet and a passageway 134 137 144 100 (108) extending between the inlet and the outlet in a predetermined operating condition. In accordance -42--/with an embodiment, the drillstring valve (100) 12 comprises a stop element (110) adapted for receiv 126 ing an valve element (112) wherein the stop ele h ment comprises at least one protrusion (114) ex -116 108 tending into a passageway portion (116) of the pas 1 he-3 sageway (108) to thereby retain the valve element 122 10(112). According to an embodiment, the at least 127 one protrusion (114) is spaced from an inlet edge 1414 (126) having a continuously reduced diameter in 112 downstream direction (128). According to a further 140 -124 embodiment, the stop element (110) comprises two 126 138 or more protrusions (114) which are spaced in cir 137 cumferential direction (118) of the passageway por tion (116) into which the at least two protrusions / (114) extend. Fig. 2