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1. (WO2012092985) CENTRALIZER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2012/092985    International Application No.:    PCT/EP2011/050180
Publication Date: 12.07.2012 International Filing Date: 07.01.2011
E21B 17/10 (2006.01)
Applicants: STATOIL PETROLEUM AS [NO/NO]; N-4035 Stavanger (NO) (For All Designated States Except US).
EIDEM, Morten [NO/NO]; (NO) (For US Only).
WELTZIN, Tore [NO/NO]; (NO) (For US Only).
GRINDHAUG, Gaute [NO/NO]; (NO) (For US Only).
ABDOLLAHI, Jafar [NO/NO]; (NO) (For US Only)
Inventors: EIDEM, Morten; (NO).
WELTZIN, Tore; (NO).
Agent: Zacco Norway AS; P.O. Box 2003 Vika N-0125 Oslo (NO)
Priority Data:
Abstract: front page image
(EN)A centralizer comprises a centralizer body (2) to be situated at the outer surface of a pipe string (1) in the form of casing, liner, or the like used while drilling, the centralizer body being formed with a plurality of outer centralizer blades (4) arranged in an inclined manner to the longitudinal axis thereof, wherein the centralizer body (2) has an separate split inner tube (8) secured to the pipe string (1) by means of a press fit, and low friction inner surface of the centralizer body (2) and separate center tube (9) facing each other are made from low friction material.
(FR)La présente invention concerne un centreur qui comprend un corps de centreur (2) destiné à être positionné sur la surface extérieure d'un train de tiges (1) sous forme de tubage, chemisage, ou analogue utilisé durant le forage, le corps de centreur comportant une pluralité de lames de centreur extérieures (4) agencées de manière inclinée par rapport à son axe longitudinal, le corps de centreur (2) comportant un tube intérieur divisé séparé (8) fixé au train de tiges (1) par ajustement à force, et une surface intérieure à faible frottement du corps de centreur (2) et un tube central séparé (9), qui se font face, sont faits de matériau à faible frottement.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, 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, IS, JP, KE, KG, KM, 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, PE, PG, PH, PL, PT, RO, RS, RU, 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, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, 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, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)