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1. (WO2010121158) CASING THICKNESS EVALUATION METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2010/121158 International Application No.: PCT/US2010/031429
Publication Date: 21.10.2010 International Filing Date: 16.04.2010
IPC:
G01V 13/00 (2006.01) ,G01M 99/00 (2011.01) ,G01V 1/40 (2006.01) ,G01V 3/18 (2006.01)
G PHYSICS
01
MEASURING; TESTING
V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
13
Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/-G01V11/144
G PHYSICS
01
MEASURING; TESTING
M
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
99
Subject matter not provided for in other groups of this subclass
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
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
Applicants: BOLSHAKOV, Alexei[US/US]; US (UsOnly)
DOMANGUE, Edward, J.[US/US]; US (UsOnly)
PATTERSON, Douglas, J.[US/US]; US (UsOnly)
BAROLAK, Joseph, Gregory[US/US]; US (UsOnly)
BAKER HUGHES INCORPORATED[US/US]; P.o.box 4740 Houston, TX 77210-4740, US (AllExceptUS)
Inventors: BOLSHAKOV, Alexei; US
DOMANGUE, Edward, J.; US
PATTERSON, Douglas, J.; US
BAROLAK, Joseph, Gregory; US
Agent: CARSON, Matt W.; Baker Hughes Incorporated P.o. Box 4740 Houston, TX 77210-4740, US
Priority Data:
12/426,08717.04.2009US
Title (EN) CASING THICKNESS EVALUATION METHOD
(FR) PROCÉDÉ D'ÉVALUATION DE L'ÉPAISSEUR D'UN BOÎTIER
Abstract:
(EN) Evaluating casing thickness by inducing SH0 and SH1 modes of a shear wave in the casing. The SH0 group velocity and SH1 mode group velocity (Vg) are measured and the measured SH0 mode group velocity is assigned as the tubular material shear velocity (Vs). A shear wave wavelength λ from the ratio of SH0 mode frequency (f0) and the measured SH0 group velocity is estimated. The tubular thickness (d) is estimated from the estimated shear wave wavelength λ. The transmitter can be calibrated to operate at an optimum frequency.
(FR) L'invention concerne un procédé d'évaluation de l'épaisseur d'un boîtier consistant à générer les modes SH0 et SH1 d'une onde de cisaillement dans le boîtier. Le procédé comprend les étapes consistant à mesurer la vitesse de groupe du mode SH0 et la vitesse de groupe du mode SH1 (Vg) et à définir la vitesse de groupe du mode SH0 mesurée comme la vitesse de cisaillement (Vs) de matériau tubulaire; à estimer une longueur d'onde λ d'onde de cisaillement à partir du rapport entre la fréquence (f0) du mode SH0 et la vitesse de groupe du mode SH0 mesurée; à estimer l'épaisseur tubulaire (d) à partir de la longueur d'onde λ d'onde de cisaillement estimée. L'invention permet de calibrer un émetteur pour assurer son fonctionnement à une fréquence optimale.
front page image
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)