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1. WO2010049099 - A TOOL FOR IMAGING A DOWNHOLE ENVIRONMENT

Publication Number WO/2010/049099
Publication Date 06.05.2010
International Application No. PCT/EP2009/007592
International Filing Date 22.10.2009
IPC
G01V 3/24 2006.01
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
18specially adapted for well-logging
20operating with propagation of electric current
24using ac
CPC
G01V 3/24
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
18specially adapted for well-logging
20operating with propagation of electric current
24using ac
Applicants
  • SERVICES PETROLIERS SCHLUMBERGER [FR]/[FR] (FR)
  • SCHLUMBERGER TECHNOLOGY B.V. [NL]/[NL] (AE, AL, AU, AZ, BG, CO, CZ, DE, DK, GR, HU, ID, IE, IL, IT, KP, KR, KZ, LT, MX, MY, NO, NZ, OM, PL, RO, RU, SI, SK, TM, TN, TR, TT, UA, UZ, ZA)
  • SCHLUMBERGER HOLDINGS LIMITED [GB]/[GB] (GB, JP, NL)
  • SCHLUMBERGER CANADA LIMITED [CA]/[CA] (CA)
  • PRAD RESEARCH AND DEVELOPMENT LIMITED [GB]/[GB] (AG, AM, AO, AT, BA, BB, BE, BF, BH, BJ, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CR, CU, CY, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GT, GW, HN, HR, IN, IS, JP, KE, KG, KM, KN, LA, LC, LK, LR, LS, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MZ, NA, NE, NG, NI, NL, PE, PG, PH, PT, RS, SC, SD, SE, SG, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TJ, TZ, UG, VC, VN, ZM, ZW)
  • HAYMAN, Andrew [GB]/[FR] (UsOnly)
Inventors
  • HAYMAN, Andrew
Agents
  • VANDERMOLEN, Matthieu
Priority Data
08168137.131.10.2008EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A TOOL FOR IMAGING A DOWNHOLE ENVIRONMENT
(FR) OUTIL POUR IMAGER UN ENVIRONNEMENT DE FOND DE TROU
Abstract
(EN)
The invention is concerned with a tool for imaging a formation, the tool comprising: a pad (96) capable of alignment adjacent a wall of the formation. The pad (96) has located thereon an imaging electrode (90) for injecting current into the formation. There is a first return electrode (96) separated from the imaging electrode (90) for receiving the injected current. There is at least one recessed electrode (92) that is located at a different distance from the wall of the formation as the other electrodes.
(FR)
L’invention concerne un outil pour imager une formation. Ledit outil comprend un patin capable de s’aligner de manière adjacente avec une paroi de la formation. Ledit patin supporte une électrode d’imagerie destinée à injecter un courant dans la formation. Une première électrode de retour est séparée de l’électrode d’imagerie pour recevoir le courant injecté. Au moins une électrode en retrait est située à une distance de la paroi de la formation différente des autres électrodes.
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