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Machine translation
1. (WO2007014009) DOWNHOLE NON-RETURN VALVE AND METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/014009    International Application No.:    PCT/US2006/028322
Publication Date: 01.02.2007 International Filing Date: 21.07.2006
IPC:
E21B 34/06 (2006.01), E21B 43/14 (2006.01)
Applicants: BAKER HUGHES INCORPORATED [US/US]; P.O. Box 40129, Houston, TX 77240-0129 (US) (For All Designated States Except US)
Inventors: MOYES, Peter, B.; (GB)
Agent: DUPHORNE, Darin, H.; P.O. Box 40129, Houston, TX 77240-0129 (US)
Priority Data:
0515071.9 22.07.2005 GB
Title (EN) DOWNHOLE NON-RETURN VALVE AND METHOD
(FR) PROCEDE ET CLAPET ANTI-RETOUR DE FOND DE PUITS
Abstract: front page image
(EN)A downhole non return valve (10) , comprising: a housing (12, 14, 16) defining a valve inlet (18) and a valve outlet (20); a plug (22) moveable between an open position and a fully sealed position; and a a biasing member (24) urging the plug towards the fully sealed position wherein the urging force of the biasing member is sufficient to move the plug to a partially sealed position but is selected to be insufficient to move the plug to a fully sealed position.
(FR)L'invention concerne un clapet anti-retour de fond de puits (10), comprenant: un logement (12, 14, 16) définissant une entrée de clapet (18) et une sortie de clapet (20); un obturateur (22) mobile entre une position ouverte et une position entièrement scellée; et un élément de polarisation (24) contraignant le bouchon en direction de la position entièrement scellée, la force de contrainte de l'élément de déviation étant suffisante à déplacer le bouchon dans une position partiellement scellée, mais celle-ci est sélectionnée de manière à être insuffisante à déplacer le bouchon dans une position entièrement scellée.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, 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 (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, 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)