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1. WO2020139813 - MINIATURIZED NMR TOOL ELECTRONICS

Publication Number WO/2020/139813
Publication Date 02.07.2020
International Application No. PCT/US2019/068278
International Filing Date 23.12.2019
IPC
G01V 3/32 2006.01
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
18specially adapted for well-logging
32operating with electron or nuclear magnetic resonance
G01V 3/38 2006.01
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
38Processing data, e.g. for analysis, for interpretation or for correction
CPC
G01V 3/32
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
18specially adapted for well-logging
32operating with electron or nuclear magnetic resonance
G01V 3/38
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
38Processing data, e.g. for analysis, for interpretation, for correction
Applicants
  • SCHLUMBERGER TECHNOLOGY CORPORATION [US]/[US] (US)
  • SCHLUMBERGER CANADA LIMITED [CA]/[CA] (CA)
  • SERVICES PETROLIERS SCHLUMBERGER [FR]/[FR] (FR)
  • SCHLUMBERGER TECHNOLOGY B.V. [NL]/[NL] (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JO, JP, KE, KG, KH, KM, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW)
Inventors
  • SONG, Yi-Qiao
  • TANG, Yiqiao
  • UTSUZAWA, Shin
  • BOTTO, Tancredi
  • BULU, Irfan
  • HURLIMANN, Martin
Agents
  • LAFFEY, Bridget M.
  • GEX, Gary
Priority Data
62/785,86428.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MINIATURIZED NMR TOOL ELECTRONICS
(FR) ÉLECTRONIQUE D'OUTIL RMN MINIATURISÉE
Abstract
(EN)
An NMR well logging tool is provided that includes a sensor and associated electronic circuitry. The sensor includes an array of RF antenna elements. The electronic circuitry includes at least one low-power integrated circuit and a plurality of high-power modules corresponding the RF antenna elements of the array. Each high-power module is coupled to a corresponding RF antenna element of the array and includes an RF amplifier that is configured to amplify RF pulses generated by the at least one low-power integrated circuit and supplied thereto for transmission by the corresponding antenna element. In embodiments, the RF amplifier of each high-power module can include an H-bridge circuit or other suitable RF amplifier.
(FR)
La présente invention concerne un outil de diagraphie de puits RMN qui comprend un capteur et un ensemble de circuits électroniques associé. Le capteur comprend un réseau d'éléments d'antenne RF. L'ensemble de circuits électroniques comprend au moins un circuit intégré de faible puissance et une pluralité de modules de haute puissance correspondant aux éléments d'antenne RF du réseau. Chaque module de puissance élevée est couplé à un élément d'antenne RF correspondant du réseau et comprend un amplificateur RF qui est configuré pour amplifier des impulsions RF générées par le ou les circuits intégrés de faible puissance et fournies à celui-ci ou à ceux-ci pour une transmission par l'élément d'antenne correspondant. Dans des modes de réalisation, l'amplificateur RF de chaque module de puissance élevée peut comprendre un circuit en pont en forme de H ou un autre amplificateur RF approprié.
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