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1. (WO2017095443) MAGNETIC COUPLING FOR DOWNHOLE APPLICATIONS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/095443 International Application No.: PCT/US2015/064041
Publication Date: 08.06.2017 International Filing Date: 04.12.2015
IPC:
E21B 17/02 (2006.01) ,E21B 17/03 (2006.01) ,E21B 41/00 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17
Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
02
Couplings; Joints
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17
Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
02
Couplings; Joints
03
between drilling rod or pipe and drill motor, e.g. between drilling rod and hammer
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
41
Equipment or details not covered by groups E21B15/-E21B40/95
Applicants:
HALLIBURTON ENERGY SERVICES, INC. [US/US]; 3000 N. Sam Houston Parkway E. Houston, Texas 77032, US
Inventors:
AGNIHOTRI, Mukul M.; US
RAJAGOPALAN, Satish; US
Agent:
HEYMAN, Paula D.; US
Priority Data:
Title (EN) MAGNETIC COUPLING FOR DOWNHOLE APPLICATIONS
(FR) COUPLAGE MAGNÉTIQUE POUR APPLICATIONS DE FOND DE TROU
Abstract:
(EN) The present disclosure relates to a magnetic coupling of a downhole tool that includes a first annular array of magnetic sections, a second annular array of magnetic sections coupled to the first annular array by a magnetic field that transfers rotational motion from the first annular array to the second annular array, and a barrier disposed between the first annular array and the second annular array, the barrier including an erosion-resistant layer. The present disclosure also relates to a method of bootstrapping a magnetic coupling of a downhole tool. The method includes supplying electrical current from a battery to an electromagnetic coil in the magnetic coupling, transferring rotational motion from the magnetic coupling to an alternating current (AC) source and supplying electrical current from the AC source to the electromagnetic coil.
(FR) La présente invention concerne un couplage magnétique d'un outil de fond de trou qui comprend un premier ensemble annulaire de sections magnétiques, un second ensemble annulaire de sections magnétiques couplées au premier ensemble annulaire par un champ magnétique qui transfère le mouvement de rotation du premier ensemble annulaire au second ensemble annulaire, et une barrière disposée entre le premier ensemble annulaire et le second ensemble annulaire, la barrière comprenant une couche résistant à l'érosion. La présente invention concerne également un procédé d'auto-amorçage d'un couplage magnétique d'un outil de fond de trou. Le procédé consiste à fournir un courant électrique provenant d'une pile à une bobine électromagnétique dans le couplage magnétique, à transférer le mouvement rotatif du couplage magnétique à une source de courant alternatif (CA) et à fournir un courant électrique de la source de courant alternatif à la bobine électromagnétique.
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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, 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 (ARIPO) (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)
Also published as:
US20180320482