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1. (WO2007091218) SELF-ANCHORING DEVICE WITH FORCE AMPLIFICATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/091218    International Application No.:    PCT/IB2007/050407
Publication Date: 16.08.2007 International Filing Date: 07.02.2007
IPC:
E21B 17/10 (2006.01), E21B 23/14 (2006.01), E21B 4/18 (2006.01)
Applicants: SCHLUMBERGER CANADA LIMITED [CA/CA]; 525-3rd Avenue S.W., Calgary, Alberta T2P 0G4 (CA) (CA only).
SERVICES PETROLIERS SCHLUMBERGER [FR/FR]; 42 rue Saint Dominique, F-75007 Paris (FR) (FR only).
SCHLUMBERGER HOLDINGS LIMITED; P.O. Box 71, Craigmuir Chambers Road Town, Tortola (VG) (GB, JP, NL only).
SCHLUMBERGER TECHNOLOGY B.V. [NL/NL]; Parkstraat 83-89, NL-2514 The Hague (NL) (AL, AM, AZ, BF, BG, BJ, BY, CF, CG, CI, CM, CO, CZ, DE, DK, GA, GN, GQ, GR, GW, HU, ID, IE, IL, IT, KG, KP, KR, KZ, LT, MD, ML, MR, MX, MY, NE, NO, NZ, OM, PL, RO, RU, SI, SK, SN, TD, TG, TJ, TM, TR, TT, UZ, ZA only).
PRAD RESEARCH AND DEVELOPMENT N.V.; De Ruyterkade 62, Willemstad (AN) (AE, AG, AT, BA, BB, BE, BR, BW, BZ, CH, CN, CR, CU, CY, DM, DZ, EC, EE, EG, ES, FI, GD, GE, GH, GM, GT, HN, HR, IN, IS, KE, KM, KN, LA, LC, LK, LR, LS, LU, LV, LY, MA, MC, MG, MK, MN, MW, MZ, NA, NG, NI, PG, PH, PL, PT, RS, SC, SD, SE, SG, SL, SM, SV, SY, SZ, TN, TZ, UA, UG, VC, VN, ZM, ZW only).
SHEIRETOV, Todor K. [BG/US]; (US) (For US Only).
CHILCOAT, Dwight C. [US/US]; (US) (For US Only).
EWAN, Robin A. [GB/US]; (US) (For US Only).
ROY, Carl J. [US/US]; (US) (For US Only).
BILLINGHAM, Matthew [GB/US]; (US) (For US Only).
AGUIRRE, Franz [PE/US]; (US) (For US Only)
Inventors: SHEIRETOV, Todor K.; (US).
CHILCOAT, Dwight C.; (US).
EWAN, Robin A.; (US).
ROY, Carl J.; (US).
BILLINGHAM, Matthew; (US).
AGUIRRE, Franz; (US)
Agent: CURINGTON, TIM; 110 Schlumberger Drive, MD-1, Sugar Land, TX 77478 (US)
Priority Data:
60/771,659 09.02.2006 US
11/610,143 13.12.2006 US
Title (EN) SELF-ANCHORING DEVICE WITH FORCE AMPLIFICATION
(FR) DISPOSITIF A ANCRAGE AUTOMATIQUE AVEC AMPLIFICATION DE FORCE
Abstract: front page image
(EN)A downhole tool is provided that includes a grip assembly (312) for contacting a well formation. The grip assembly includes a gripper body (36); and a centralizer that is attached to and radially expandable with respect to the gripper body and that has a geometry which is lockable by a locking device. The grip assembly also includes a force amplifier (326) in force transmitting relation with the centralizer, wherein the force amplifier transfers a force in a first direction to a much larger force in a second direction when the centralizer is locked by the locking device.
(FR)La présente invention concerne un outil de fond de trou qui comprend un assemblage d'accrochage pour entrer en contact avec une formation de puits. L'assemblage d'accrochage comprend un corps de crochet; et un centreur qui est fixé à et extensible de façon radiale par rapport au corps de crochet et qui possède une géométrie qui peut être verrouillé par un dispositif de verrouillage. L'assemblage d'accrochage comprend également un amplificateur de force en relation de transmission de force avec le centreur, l'amplificateur de force transférant une force dans une première direction en une force bien plus importante dans une seconde direction lorsque le centreur est verrouillé par le dispositif de verrouillage.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)