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1. (WO2018013049) LEAK LOCALIZATION USING ACOUSTIC-SIGNAL CORRELATIONS
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.:    WO/2018/013049    International Application No.:    PCT/SG2016/050325
Publication Date: 18.01.2018 International Filing Date: 12.07.2016
IPC:
G01M 3/24 (2006.01), G01B 5/18 (2006.01), G06F 17/10 (2006.01)
Applicants: HALLIBURTON ENERGY SERVICES, INC. [US/US]; 3000 N. Sam Houston Parkway E. Houston, Texas 77032 (US).
ANG, Yi Yang [SG/SG]; (SG).
NGUYEN, Nam [VN/SG]; (SG).
LU, Yinghui [CN/US]; (US).
TAWARE, Avinash Vinayak [US/US]; (US).
JAGANNANTHAN, Srinivasan [IN/US]; (US)
Inventors: ANG, Yi Yang; (SG).
NGUYEN, Nam; (SG).
LU, Yinghui; (US).
TAWARE, Avinash Vinayak; (US).
JAGANNANTHAN, Srinivasan; (US)
Agent: MIRANDAH ASIA (SINGAPORE) PTE LTD; 1 Coleman Street #07-08, The Adelphi Singapore 179803 (SG)
Priority Data:
Title (EN) LEAK LOCALIZATION USING ACOUSTIC-SIGNAL CORRELATIONS
(FR) LOCALISATION DE FUITES À L'AIDE DE CORRÉLATIONS DES SIGNAUX ACOUSTIQUES
Abstract: front page image
(EN)Disclosed are acoustic logging systems and methods that involve correlating broadband acoustic signals acquired by a plurality of acoustic sensors at multiple depths within a wellbore to compute covariance matrices and their eigenvalues in the frequency domain for a plurality of frequency bins. In accordance with various embodiments, acoustic sources are detected and located based on the eigenvalues viewed as a function of depth and frequency.
(FR)L'invention concerne des systèmes et des procédés de diagraphie acoustique qui impliquent la corrélation de signaux acoustiques à large bande acquis par une pluralité de capteurs acoustiques à de multiples profondeurs à l'intérieur d'un puits de forage afin de calculer des matrices de covariance et leurs valeurs propres dans le domaine fréquentiel pour une pluralité de segments de fréquence. Selon divers modes de réalisation, des sources acoustiques sont détectées et localisées à partir des valeurs propres visualisées en fonction de la profondeur et de la fréquence.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, 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, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, 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, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)