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1. (WO2009090465) METHOD FOR PERMEABLE ZONE DETECTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2009/090465 International Application No.: PCT/IB2008/003416
Publication Date: 23.07.2009 International Filing Date: 11.12.2008
IPC:
G01V 1/50 (2006.01)
G PHYSICS
01
MEASURING; TESTING
V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
1
Seismology; Seismic or acoustic prospecting or detecting
40
specially adapted for well-logging
44
using generators and receivers in the same well
48
Processing data
50
Analysing data
Applicants:
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, KR, KZ, LT, MX, NO, NZ, OM, PL, RO, RU, SI, SK, TM, TN, TR, TT, UA, UZ, ZA)
SERVICES PETROLIERS SCHLUMBERGER [FR/FR]; 42 rue Saint-Dominique F-75007 Paris, FR (FR)
SCHLUMBERGER CANADA LIMITED [CA/CA]; 525-3rd Avenue S.W. Calgary Alberta T2P 0G4, CA (CA)
SCHLUMBERGER HOLDINGS LIMITED; P.O. Box 71 Craigmuir Chambers Road Town Tortola, VG (GB, JP, NL)
PRAD RESEARCH AND DEVELOPMENT LIMITED; P.O. Box 71 Craigmuir Chambers Road Town, Torola, VG (AE, AG, AM, AO, AT, BA, BB, BE, BF, BH, BJ, BR, BW, BY, BZ, CF, CG, CH, CI, 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, LA, LC, LK, LR, LS, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MY, MZ, NA, NE, NG, NI, PG, PH, PT, RS, SC, SD, SE, SG, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TJ, TZ, UG, VC, VN, ZM, ZW)
WU, Peter T. [US/US]; US (UsOnly)
DUMONT, Alain [FR/JP]; JP (UsOnly)
CAMPANAC, Pierre, H. [FR/US]; US (UsOnly)
JOHNSON, David [US/US]; US (UsOnly)
Inventors:
WU, Peter T.; US
DUMONT, Alain; JP
CAMPANAC, Pierre, H.; US
JOHNSON, David; US
Agent:
MATSUDA, Kiichiro; Schlumberger K.K. 2-2-1 Fuchinobe Sagamihara-shi Kanagawa-ken, 229-0006, JP
Priority Data:
11/964,73627.12.2007US
Title (EN) METHOD FOR PERMEABLE ZONE DETECTION
(FR) PROCÉDÉ POUR UNE DÉTECTION DE ZONE PERMÉABLE
Abstract:
(EN) A method for estimating formation permeability from measured sonic wave Stoneley attributes and particularly the Stoneley attributes of slowness (DTst) and attenuation (ATTst), taking into consideration the existence of a heavy walled drill collar at the end of the drill string and the relative lack of borehole mud cake during a drilling operation. In the subject LWD application a real-time qualitative indication for fracture and permeable zones is estimated from Stoneley measurements. This information is useful to a driller to make important timely decisions about drilling and completion programs.
(FR) L'invention porte sur un procédé pour estimer la perméabilité d'une formation à partir d'attributs de Stoneley d'onde sonique mesurés, et en particulier à partir des attributs de Stoneley de la lenteur (DTst) et de l'atténuation (ATTst), en tenant compte de l'existence d'un collier de forage à paroi lourde à l'extrémité du train de tiges et du manque relatif de gâteau de boue de trou de forage durant une opération de forage. Dans l'application LWD concernée, une indication qualitative en temps réel pour des zones de fracture et perméables est estimée à partir des mesures de Stoneley. Ces informations sont utiles à un foreur pour prendre à temps des décisions importantes concernant les programmes de forage et d'achèvement.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, 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, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, 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, LS, MW, MZ, NA, 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, HR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, NO, PL, 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)