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1. (WO2010117647) ELECTROMAGNETIC LOGGING BETWEEN BOREHOLE AND SURFACE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2010/117647 International Application No.: PCT/US2010/028585
Publication Date: 14.10.2010 International Filing Date: 25.03.2010
IPC:
G01V 3/30 (2006.01) ,G01V 3/18 (2006.01) ,E21B 47/00 (2006.01)
G PHYSICS
01
MEASURING; TESTING
V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
18
specially adapted for well-logging
30
operating with electromagnetic waves
G PHYSICS
01
MEASURING; TESTING
V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
18
specially adapted for well-logging
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
47
Survey of boreholes or wells
Applicants:
ROSTHAL, Richard, A. [US/US]; US (UsOnly)
NICHOLS, Edward [CA/US]; US (UsOnly)
LOVELL, John [GB/US]; US (UsOnly)
BOGATH, Christopher [CA/GB]; GB (UsOnly)
SCHLUMBERGER CANADA LIMITED [CA/CA]; 525 3rd Avenue SW Calgary, AB T2P0G4, CA (CA)
SCHLUMBERGER TECHNOLOGY B.V. [NL/NL]; Parkstraat 83-89 NL-2514 JG The Hague, NL (AL, AU, AZ, BG, CO, CZ, DE, DK, GR, HU, ID, IE, IL, IT, KZ, LT, MX, MY, NO, NZ, OM, PL, RO, RU, SI, SK, TM, TN, TR, TT, UA, UZ, ZA)
PRAD RESEARCH AND DEVELOPMENT LIMITED; P.O. Box 71 Craigmuir Chambers, Road Town Tortola, VG (AE, AG, AM, AO, AT, BA, BB, BE, BF, BH, BJ, BR, BW, BY, BZ, CF, CG, CH, CI, CL, CM, CN, CR, CU, CY, DM, DO, DZ, EC, EE, EG, ES, FI, GA, GD, GE, GH, GM, GN, GQ, GT, GW, HN, HR, IN, IS, KE, KG, KM, KN, KP, KR, LA, LC, LK, LR, LS, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MZ, NA, NE, NG, NI, PE, PG, PH, PT, RS, SC, SD, SE, SG, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TZ, UG, VC, VN, ZM, ZW)
SERVICES PETROLIERS SCHLUMBERGER [FR/FR]; 42, Rue Saint-dominique F-75007 Paris, FR (FR)
SCHLUMBERGER HOLDINGS LIMITED; Po Box 71 Craigmuir Chambers Roadtown Tortola, VG (GB, JP, NL)
Inventors:
ROSTHAL, Richard, A.; US
NICHOLS, Edward; US
LOVELL, John; US
BOGATH, Christopher; GB
Agent:
HOFMAN, Dave, R.; Schlumberger Technology Corporation Office of IP Counsel 200 Gillingham Lane MD 200-9 Sugar Land, TX 77478, US
Priority Data:
12/603,05321.10.2009US
61/168,28110.04.2009US
Title (EN) ELECTROMAGNETIC LOGGING BETWEEN BOREHOLE AND SURFACE
(FR) DIAGRAPHIE ÉLECTROMAGNÉTIQUE ENTRE UN TROU DE FORAGE ET UNE SURFACE
Abstract:
(EN) The present disclosure relates to determining a property, such as resistivity, of an earth formation. A transmitter is disposed in a wellbore penetrating the formation, and a plurality of receivers are distributed on or near the earth's surface. The transmitter sends electromagnetic energy into the formation and the resulting signal, after passing through the formation, is detected by the array of receivers. The received signal is used to determine the property of the formation. This is often achieved using an inversion or numerical model of the formation being measured. The inversion takes into account changes in the background formation model due to transmitting from various locations. The measurements made on the formation can be performed while drilling the wellbore or subsequent to the drilling.
(FR) La présente invention porte sur la détermination d'une propriété, telle que la résistivité, d'une formation terrestre. Un émetteur est disposé dans un puits de forage pénétrant dans la formation et une pluralité de récepteurs sont répartis sur la surface de la terre ou au voisinage de celle-ci. L'émetteur envoie une énergie électromagnétique dans la formation, et le signal résultant, après avoir traversé la formation, est détecté par le groupement de récepteurs. Le signal reçu est utilisé pour déterminer la propriété de la formation. Ceci est souvent réalisé à l'aide d'une inversion ou d'un modèle numérique de la formation qui est mesurée. L'inversion tient compte de changements dans le modèle de formation d'arrière-plan dus à la transmission à partir de différents emplacements. Les mesures réalisées sur la formation peuvent être effectuées pendant le forage du puits de forage ou après le forage.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, 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, KM, 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, PE, PG, PH, PL, PT, RO, RS, RU, 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (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, SE, SI, SK, SM, 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)