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Pub. No.:    WO/2001/081719    International Application No.:    PCT/GB2001/001816
Publication Date: 01.11.2001 International Filing Date: 24.04.2001
Chapter 2 Demand Filed:    05.10.2001    
E21B 43/119 (2006.01)
Applicants: SCHLUMBERGER TECHNOLOGY B.V. [NL/NL]; Parkstraat 83-89 NL-2514 JG The Hague (NL) (AT, AU, AZ, DE, DK, ES, ID, IE, IT, KR, KZ, MX, NO, NZ, PL, RO, RU, SK, TM, UA, ZA only).
PETROLEUM RESEARCH AND DEVELOPMENT N.V. [NL/NL]; De Ruyterkade 62 Willemstad Curacao (AN) (CG, CI, CM, CZ, DZ, GA, IN, LT, MA, NE, TD, VN only).
SCHLUMBERGER CANADA LIMITED [CA/CA]; 525-3rd Avenue S.W. Calgary, Alberta T2P 0G4 (CA) (CA only).
SCHLUMBERGER HOLDINGS LIMITED [--/--]; Craigmuir Chambers P.O. Box 71 Road Town Tortola (VG) (GB, JP, NL only).
SCHLUMBERGER OILFIELD ASSISTANCE LIMITED [--/--]; Craigmuir Chambers Road Town Tortola (VG) (AE, SD, TR only).
SCHLUMBERGER OVERSEAS S.A. [PA/PA]; 8 Calle Aquilino de la Guardia Panama City (PA) (CN only).
SCHLUMBERGER SERVICES LIMITED [--/--]; P.O. Box 438 Tortola (VG) (TT only).
SCHLUMBERGER SURENCO S.A. [PA/PA]; 8 Calle Aquilino de la Guardia Panama City (PA) (BR only).
SERVICES PETROLIERS SCHLUMBERGER [FR/FR]; 42, rue Saint Dominique F-75007 Paris Cedex (FR) (FR only).
NICHOLSON, Elizabeth, Diane [GB/US]; (US) (For US Only)
Inventors: NICHOLSON, Elizabeth, Diane; (US)
Agent: MACQUET, Christophe; European Patent Attorney Intellectual Property Law Department Schlumberger Cambridge Research Limited High Cross, Madingley Road Cambridge CB3 0EL (GB)
Priority Data:
0010107.1 26.04.2000 GB
Abstract: front page image
(EN)A method for optimally orienting perforations in a subterranean formation is disclosed, the optimization process being based on establishing the orientation of bedding planes in the formation and, where applicable, hole size effects while determining an orientation of the perforation that balances the stress concentration along the circumference of the cross-section between perforation and bedding plane in further improvements of the method inhomogeneous stress distributions and permeability are included into the optimization process.
(FR)L'invention concerne un procédé d'orientation optimale de perforations dans une formation souterraine, le procédé d'optimisation étant basé sur l'établissement de l'orientation des plans de stratification de la formation et, s'il est nécessaire, sur l'établissement des effets de taille de trou tout en déterminant une orientation de la perforation qui équilibre la concentration de contrainte le long de la circonférence de la section transversale entre perforation et plan de stratification. Dans des améliorations supplémentaires du procédé, des distributions de contraintes inhomogènes et perméabilité sont incorporées dans le procédé d'optimisation.
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, EE, 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, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)