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1. (WO2014186276) BOREHOLE FLUID EFFECT CORRECTION FOR PULSED NEUTRON POROSITY MEASUREMENTS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2014/186276    International Application No.:    PCT/US2014/037672
Publication Date: 20.11.2014 International Filing Date: 12.05.2014
IPC:
G01V 5/10 (2006.01), G01N 23/222 (2006.01)
Applicants: SCHLUMBERGER CANADA LIMITED [CA/CA]; 125 - 9 Avenue SE Calgary, Alberta T2G 0P6 (CA) (CA only).
SERVICES PETROLIERS SCHLUMBERGER [FR/FR]; 42 rue Saint Dominique F-75007 Paris (FR) (FR only).
SCHLUMBERGER HOLDINGS LIMITED; P.O. Box 71, Craigmuir Chambers, Road Town Tortola, 1110 (VG) (GB, JP, NL only).
SCHLUMBERGER TECHNOLOGY B.V. [NL/NL]; Parkstraat 83-89 NL-2514 JG The Hague (NL) (AG, AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BN, BR, BW, BY, BZ, CF, CG, CH, CI, CL, CM, CO, CR, CU, CY, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GA, GD, GE, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IR, IS, IT, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, NE, NI, NO, NZ, OM, PA, PE, PG, PL, PT, QA, RO, RS, RU, RW, SA, SC, SE, SG, SI, SK, SL, SM, SN, ST, SV, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, ZA, ZM, ZW only).
PRAD RESEARCH AND DEVELOPMENT LIMITED; P.O. Box 71, Craigmuir Chambers, Road Town Tortola, 1110 (VG) (AE, AO, BF, BH, BJ, CF, CG, CI, CM, CN, GA, GH, GN, GQ, GW, IN, KM, LY, MA, ML, MR, MZ, NA, NE, NG, PH, SD, SN, SY, TD, TG, VN only).
SCHLUMBERGER TECHNOLOGY CORPORATION [US/US]; 300 Schlumberger Drive Sugar Land, Texas 77478 (US) (US only)
Inventors: ZHOU, Tong; (US).
BEEKMAN, Sicco; (US).
QUINLAN, Timothy M.; (US)
Agent: BERMAN, Jeremy; 10001 Richmond Avenue IP Administration Center of Excellence Room 4720 Houston, Texas 77042 (US)
Priority Data:
13/895,189 15.05.2013 US
Title (EN) BOREHOLE FLUID EFFECT CORRECTION FOR PULSED NEUTRON POROSITY MEASUREMENTS
(FR) CORRECTION DE L'EFFET DU FLUIDE D'UN TROU DE FORAGE POUR LES MESURES DE POROSITÉ À L'AIDE DE NEUTRONS PULSÉS
Abstract: front page image
(EN)A method for determining formation hydrogen index includes using as input to a computer measurements of numbers of burst gamma rays (gamma rays detected during operation of a pulsed neutron source) and numbers of thermal neutron capture gamma rays made at two different axial spacings from the pulsed neutron source. A ratio of the numbers of burst gamma rays and a ratio of the numbers of thermal neutron capture gamma rays is determined. A corrected ratio of the numbers of thermal neutron capture gamma rays using the ratio of numbers of burst gamma rays is determined. The formation hydrogen index is determined from the corrected ratio.
(FR)L'invention se rapporte à un procédé de détermination de l'indice d'hydrogène d'une formation, qui consiste à utiliser comme entrée pour un ordinateur des mesures de plusieurs rayons gammas en rafales (rayons gammas détectés au cours du fonctionnement d'une source de neutrons pulsés) et de plusieurs rayons gammas à capture de neutrons thermiques effectuées à deux espacements axiaux différents par rapport à la source de neutrons pulsés. Le rapport des rayons gammas en rafales et le rapport des rayons gammas à capture de neutrons thermiques sont déterminés. Le rapport corrigé des rayons gammas à capture de neutrons thermiques utilisant le rapport des rayons gammas en rafales est déterminé. L'indice d'hydrogène de la formation est déterminé à partir du rapport corrigé.
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, LT, 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, 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)