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1. (WO2004029663) DEVICE AND PROCESS FOR DETERMINATION OF THE RESISTIVITY OF A FORMATION SURROUNDING A CASED BOREHOLE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/029663    International Application No.:    PCT/EP2003/010353
Publication Date: 08.04.2004 International Filing Date: 17.09.2003
Chapter 2 Demand Filed:    29.03.2004    
IPC:
G01V 3/20 (2006.01)
Applicants: SERVICES PETROLIERS SCHLUMBERGER [FR/FR]; 42, rue Saint Dominique, F-75007 Paris (FR) (FR only).
SCHLUMBERGER TECHNOLOGY B.V. [NL/NL]; Parkstraat 83-89, NL-2514 JG The Hague (NL) (AE, AG, AL, AM, AT, AU, AZ, BA, BB, BE, BG, BY, BZ, CH, CO, CR, CU, CY, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GD, GE, GH, GM, GR, HR, HU, ID, IE, IL, IS, IT, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LU, LV, MC, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, PG, PH, PL, PT, RO, RU, SC, SE, SG, SI, SK, SL, SY, SZ, TJ, TM, TZ, UA, UG, UZ, VC, YU, ZA, ZM, ZW only).
SCHLUMBERGER HOLDINGS LIMITED [--/--]; PO Box 71, Craigmuir Chambers, Road Town - Tortola, British Virgin Islands (VG) (GB, JP, NL only).
SCHLUMBERGER CANADA LIMITED [CA/CA]; 24th. Fl. Monenco Place, 801 6th Avenue, SW, Calgary, Alberta T2P 3W2 (CA) (CA only).
PETROLEUM RESEARCH & DEVELOPMENT N.V. [NL/NL]; De Ruyterkade 62, Willemstad, Curacao (AN) (BF, BJ, CF, CG, CI, CM, CZ, GA, GN, GQ, GW, IN, LT, MA, ML, MR, NE, SN, TD, TG, TN, VN only).
SCHLUMBERGER OVERSEAS S.A. [PA/PA]; 8 Calle Aquilino de la Guardia, Panama City (PA) (CN only).
SCHLUMBERGER OILFIELD ASSISTANCE LIMITED [PA/PA]; 8 Calle Aquilino de la Guardia, Panama City, Panama Panama City (PA) (OM, SD, SY, TR only).
SCHLUMBERGER SURENCO S.A. [PA/PA]; 8 Calle Aquilino de la Guardia, Panama City, Panama Panama (PA) (BR only).
SCHLUMBERGER SERVICES LIMITED [--/--]; P.O. Box 438, Tortola, British Virgin Islands (VG) (TT only).
SCHLUMBERGER SEACO INC. [PA/PA]; 8 Calle Aquilino de la Guardia, Panama City, Panama (PA) (EG only).
BENIMELI, Dominique [FR/FR]; (FR) (For US Only).
LEVESQUE, Cyrille [FR/FR]; (FR) (For US Only).
MCKEON, Donald [US/FR]; (FR) (For US Only)
Inventors: BENIMELI, Dominique; (FR).
LEVESQUE, Cyrille; (FR).
MCKEON, Donald; (FR)
Agent: RAYBAUD, Hèlène; Etudes et Productions Schlumberger, 1, rue Henri Becquerel - BP 202, F-92142 Clamart Cedex (FR).
MENES, Catherine; Etudes et Productions Schlumberger, 1, rue Henri Becquerel, B.P. 202, F-92142 Clamart Cedex (FR)
Priority Data:
02/11837 25.09.2002 FR
Title (EN) DEVICE AND PROCESS FOR DETERMINATION OF THE RESISTIVITY OF A FORMATION SURROUNDING A CASED BOREHOLE
(FR) DISPOSITIF ET PROCEDE PERMETTANT DE DETERMINER LA RESISTIVITE D'UNE FORMATION ENTOURANT UN FORAGE TUBE
Abstract: front page image
(EN)Body (22) for measuring the resistivity of a formation (9) surrounding a well (10) equipped with a lining (11), comprising: a body (23) of a probe (22), a set of three primary voltage measurement electrodes (ea, eb, ec), an upper electrode (ea) and a lower electrode (ec) and a central electrode (eb), two electrodes (Inl, In2), an upper current injection electrode (Inl) and a lower current injection electrode (In2) arranged on each side of the set of primary electrodes, characterized in that it also comprises, two secondary voltage measurement electrodes (24, 26) arranged on each side of the set of primary electrodes (ea, eb, ec), and between the two current injection electrodes (Inl, In2), the spacing between a secondary electrode (24, 26) and the closest primary end electrode (ea, ec) being more than 1.5 times the spacing between the primary electrodes (ea, eb, ec).
(FR)L'invention concerne un corps (22) permettant de mesurer la résistivité d'une formation (9) entourant un puits (10) équipé d'un chemisage (11), comprenant: un corps (23) d'une sonde (22); un ensemble de trois électrodes principales de mesure de tension (ea, eb, ec): une électrode supérieure (ea), une électrode inférieure (ec) et une électrode centrale (eb); deux électrodes (In1, In2): une électrode supérieure d'injection de courant (Inl) et une électrode inférieure d'injection de courant (In2) disposées de chaque côté de l'ensemble d'électrodes principales. Le corps décrit dans cette invention se caractérise également par la présence de deux électrodes secondaires de mesure de tension (24, 26) disposées de chaque côté de l'ensemble d'électrodes principales (ea, eb, ec) et entre les deux électrodes d'injection de courant (Inl, In2), l'écartement entre une électrode secondaire (24, 26) et l'électrode terminale principale la plus proche (ea, ec) étant supérieur à 1,5 fois l'écartement entre les électrodes principales (ea, eb, ec).
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, 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, IT, LU, MC, NL, 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)