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1. (WO2019066919) UNIDIRECTIONAL MAGNETIZATION OF NUCLEAR MAGNETIC RESONANCE TOOLS HAVING SOFT MAGNETIC CORE MATERIAL
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Pub. No.: WO/2019/066919 International Application No.: PCT/US2017/054386
Publication Date: 04.04.2019 International Filing Date: 29.09.2017
IPC:
G01V 3/32 (2006.01)
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
32
operating with electron or nuclear magnetic resonance
Applicants:
HALLIBURTON ENERGY SERVICES, INC. [US/US]; 3000 N. Sam Houston Parkway E. Houston, Texas 77032, US
Inventors:
LI, Lilong; US
CHEN, Songhua; US
REIDERMAN, Arcady; US
Agent:
LAYE, Jade O.; US
TIDWELL, Mark; US
PITTMAN, David; US
BORLAND, Harold A.; US
RAJ, Vinu; US
BECKER, Jeffrey; US
BOWLS, David; US
BROWN, Randall C.; US
CHEN, Tom; US
EDWARDS, Gary; US
EHMKE, Andrew S.; US
FOSTER, Theodore M.; US
FOLSOM, Brent; US
GEORGE, Gavin; US
GRAHAM, Brian; US
HALLMAN, Jonathan; US
HERDA, Alan; US
JOHNSON, Dustin T.; US
HOWARD, Kyle; US
KELTON, Thomas W.; US
KONNEKER, Richard J.; US
LAWRENCE, Don; US
LEVY, Alma Prieto; US
LI, Eric Q.; US
LOWES, Andrew J.; US
LYLE, Kelly; US
MCCOMBS, David L.; US
MENCHER, Joseph R.; US
MICHELSON, Greg; US
MOORE, Mark; US
NASH, William; US
NICKOLS, Julie; US
O'DELL, David; US
OLSON, Brad; US
SHENKER, Michael; US
SUAREZ, Vera; US
TU, Evert; US
WEBB, Greg; US
WELCH, Henry; US
WOLFSON, Jeffrey; US
BEERY, Kristen; US
COLSON, Randall E.; US
DIETZE, Paul E.; US
HAMPTON, Phillip; US
HUH, Gregory; US
JARRATT, Scott; US
WHITE, Kevin; US
MENEZES, Clive; US
FITE, Benjamin; US
BRYSON, Alan C.; US
RODDY, Craig; US
WUSTENBERG, John; US
COHN, Andrew; US
FAISAL, Tanya; US
HASFORD, Sarah; US
LEVENSON, Louis R.; US
LIU, Yanyi; US
NGUYEN, Thuc; US
PARSONS, Michael; US
RAMON, Michael; US
TSAI, Daniel; US
VARGHESE, Kelvin; US
WANG, Alan; US
WHITNEY, Jason; US
WROBEL, Michael; US
RICHARDSON, Scott; US
Priority Data:
Title (EN) UNIDIRECTIONAL MAGNETIZATION OF NUCLEAR MAGNETIC RESONANCE TOOLS HAVING SOFT MAGNETIC CORE MATERIAL
(FR) MAGNÉTISATION UNIDIRECTIONNELLE D'OUTILS DE RÉSONANCE MAGNÉTIQUE NUCLÉAIRE (RMN) COMPRENANT UN MATÉRIAU À NOYAU À AIMANTATION TEMPORAIRE
Abstract:
(EN) NMR tools are described having unidirectional magnetization throughout the magnet assembly. An antenna assembly is positioned around the magnet assembly in order to excite a volume in the surrounding subterranean formation. A layer of soft magnetic core material is positioned under the antenna assembly in order to shield all or most of the RF field generated by the RF antenna away from the conductive components inside the NMR tool. The conductive components may be conductive structural members or a conductive magnet assembly. The soft magnetic core material also shapes the static magnetic field by smoothing out the longitudinal magnetic field variation.
(FR) L'invention concerne des outils de résonance magnétique nucléaire (RMN) ayant une magnétisation unidirectionnelle dans tout l'ensemble aimant. Un ensemble antenne est positionné autour de l'ensemble aimant afin d'exciter un volume dans la formation souterraine environnante. Une couche de matériau à noyau à aimantation temporaire est positionnée sous l'ensemble antenne afin de bloquer tout ou la plus grande partie du champ radiofréquence (RF) généré par l'antenne RF à distance des composants conducteurs à l'intérieur de l'outil de RMN. Les composants conducteurs peuvent être des éléments structuraux conducteurs ou un ensemble aimant conducteur. Le matériau à noyau à aimantation temporaire met également en forme le champ magnétique statique par lissage de la variation du champ magnétique longitudinal.
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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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, 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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)