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Machine translation
1. (WO2002006634) A METHOD OF DETERMINING PROPERTIES RELATING TO AN UNDERBALANCED WELL
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2002/006634    International Application No.:    PCT/GB2001/003216
Publication Date: 24.01.2002 International Filing Date: 13.07.2001
Chapter 2 Demand Filed:    17.01.2002    
IPC:
E21B 49/00 (2006.01)
Applicants: SCHLUMBERGER TECHNOLOGY B.V. [NL/NL]; Parkstraat 83-89, NL-2514 JG The Hague (NL) (AT, AU, AZ, DE, DK, ES, HR, ID, IE, IT, KP, 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, Curaçao (AN) (CG, CI, CM, CZ, DZ, GA, GN, IN, LT, MA, NE, TD, TT, VN only).
SCHLUMBERGER CANADA LIMITED [CA/CA]; 525 - 3rd Avenue S.W., Calgary, Alberta T2P 0G4 (CA) (CA only).
SCHLUMBERGER HOLDINGS LIMITED [--/--]; P.O. Box 71, Craigmuir Chambers, Road Town, Tortola (VG) (AG, AL, AM, BA, BB, BE, BF, BG, BJ, BY, BZ, CF, CH, CI, CR, CU, CY, DM, EE, FI, GB, GD, GE, GH, GM, GR, GW, HU, IL, IS, JP, KE, KG, LC, LK, LR, LS, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NL, PT, SE, SG, SI, SL, SN, SZ, TG, TJ, TZ, UG, US, UZ, YU, ZW only).
SCHLUMBERGER OILFIELD ASSISTANCE LIMITED [PA/PA]; 8 Calle Aquilino de la Guardia, Panama City (PA) (AE, SD, TR only).
SCHLUMBERGER OVERSEAS S.A. [PA/PA]; 8 Calle Aquilino de la Guardia, Panama City (PA) (CN 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 (FR) (FR only).
KNEISSL, Wendy [GB/GB]; (GB) (For US Only).
KUHN DE CHIZELLE, Yan [FR/FR]; (FR) (For US Only)
Inventors: KNEISSL, Wendy; (GB).
KUHN DE CHIZELLE, Yan; (FR)
Agent: WANG, William, L.; Schlumberger Cambridge Research Limited, Intellectual Property Law Dept., High Cross, Madingley Road, Cambridge CB3 0EL (GB)
Priority Data:
0017754.3 19.07.2000 GB
0024331.1 05.10.2000 GB
Title (EN) A METHOD OF DETERMINING PROPERTIES RELATING TO AN UNDERBALANCED WELL
(FR) PROCEDE POUR DETERMINER DES PROPRIETES RELATIVES A UN PUITS EN SOUS PRESSION
Abstract: front page image
(EN)There is a method of determining properties relating to an underbalanced well, comprising inducing pressure variations in a fluid within a well, measuring the pressure variations, and calculating pore pressure of at least one fluid-producing formation. The pressure variations cause a change in flow rate from formations along a length of borehole, and as such a change in the production flow rate of the well. The variations in pressure are used to calculate the pore pressure. Variations in annular bottomhole pressure are induced by altering the flow rate of drilling fluid, or the density of drilling fluid or by acoustic pulsing downhole. The pore pressure, permeability and porosity of the formations is derived as a real time profile along the length of the borehole.
(FR)L'invention concerne un procédé de détermination des propriétés relatives à un puits en sous pression, consistant à induire des variations de pression dans un fluide à l'intérieur d'un puits, à mesurer ces variations de pression, et à calculer une pression interstitielle d'au moins une formation de production de fluide. Les variations de pression provoquent une variation de débit provenant de formations sur une longueur de trou de sonde, et provoquent ainsi une variation du débit de production du puits. Ces variations de pression sont employées pour calculer la pression interstitielle. Les variations de pression dans le fonds de puits annulaire sont induites par modification du débit de fluide de forage, de la densité de ce fluide de forage ou induites par application d'impulsions acoustiques au fond du puits. La pression interstitielle, la perméabilité et la porosité des formations sont obtenues sous la forme d'un profil en temps réel sur la longueur du trou de sonde.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, 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)