Patent SG-11201408079U-A (SG)
Title: Drill bit with hydraulically adjustable axial pad for controlling torsional fluctuations
Inventor: SCHWEFE THORSTEN
IPC: E21B10/38
Filed: 2013-06-06
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 19 December 2013 (19.12.2013) WIPOIPCT (10) International Publication Number WO 2013/188206 A1 (51) International Patent Classification: E21B 10/26 (2006.01) E21B 4/02 (2006.01) E21B 10/38 (2006.01) (21) International Application Number: PCT/US2013/044487 (22) International Filing Date: 6 June 2013 (06.06.2013) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 13/489,563 6 June 2012 (06.06.2012) US (71) Applicant: BAKER HUGHES INCORPORATED [US/US]; P.O. Box 4740, Houston, TX 77210-4740 (US). (72) Inventors: SCHWEFE, Thorsten; Elter Cottage, Christ- church Road, Virginia Water GU254PT (GB). BEUER- HAUSEN, Chad, J.; 9610 Crestwater Circle, Magnolia, TX 77354 (US). (74) Agents: WELBORN, Brian, S. et al.; Baker Hughes In­ corporated, Intellectual Property Counsel, P.O. Box 4740, Houston, TX 77210-4740 (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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, 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, 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, [Continued on next page] (54) Title: DRILL BIT WITH HYDRAULICALLY ADJUSTABLE AXIAL PAD FOR CONTROLLING TORSIONAL FLUCTU­ ATIONS FLUID PASSAGE SBC- ACTUATED PAD 340 V© o CJ 00 00 i-H en i-H o CJ o & JL 152 CHECK VALVE WITH HYDRAULIC RELEASE (57) Abstract: In one aspect, a drill bit is disclosed that, in one configuration, includes one or more cutters on a surface thereon configured to penetrate into formation, a at least one pad at the surface, an actuation device configured to supply a fluid under pressure to the pad to extend the pad from the surface, and a relief device configured to drain fluid supplied to the pad to reduce the pressure on the at least one pad when the force applied on the at least one pad exceeds selected a limit. /-CENTER WATERWAY FIG. 3B WO 2013/188206 Al I lllll llllllll II llllll III lllll lllll III III III lllll lllll lllll lllll llll llll lllll lllllll llll llll TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) Published: — with international search report (Art. 21(3)) before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) with information concerning one or more priority claims considered void (Rule 26bis.2(d))