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1. (WO2018031484) POLYMER-BASED CENTRALIZER FOR DOWNHOLE DRILLING APPARATUS
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/031484 International Application No.: PCT/US2017/045779
Publication Date: 15.02.2018 International Filing Date: 07.08.2017
IPC:
E21B 17/10 (2006.01) ,E21B 17/22 (2006.01) ,E21B 19/24 (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
10
Wear protectors; Centralising devices
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
22
Rods or pipes with helical structure
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
19
Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
24
Guiding or centralising devices for drilling rods or pipes
Applicants: OIL STATES INDUSTRIES, INC.[US/US]; 7701 South Cooper Street Arlington, Texas 76001, US
Inventors: BUDLER, Nicholas Frederick; US
SANDSNESS, Jimmy Dale; US
Agent: RUTHERFORD, Keith A.; US
Priority Data:
62/372,19908.08.2016US
Title (EN) POLYMER-BASED CENTRALIZER FOR DOWNHOLE DRILLING APPARATUS
(FR) CENTREUR À BASE DE POLYMÈRE POUR APPAREIL DE FORAGE DE FOND DE TROU
Abstract:
(EN) The invention provides a centralizer for use with downhole operations. The centralizer is formed of a hollow, cylindrical body having an exposed outer surface and formed of a non-metallic material, a plurality of non-metallic blades protruding from the outer surface of the cylindrical body, and a plurality of wear buttons positioned on each of the plurality of blades, each of the wear buttons having a surface designed to reduce grabbing or sticking and wear of the hollow cylindrical body, such as a smooth, oval surface.
(FR) Cette invention concerne un centreur destiné à être utilisé dans des opérations de fond de trou. Le centreur est constitué d'un corps cylindrique creux ayant une surface externe exposée et fait d'un matériau non métallique, une pluralité de lames non métalliques faisant saillie à partir de la surface externe du corps cylindrique, et une pluralité de boutons d'usure positionnés sur chacune de la pluralité de lames, chacun des boutons d'usure ayant une surface conçue pour réduire la préhension ou le collage et l'usure du corps cylindrique creux, telle qu'une surface ovale lisse.
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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)