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Machine translation
1. (WO2013110160) CORE BARREL VALVE ASSEMBLY
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2013/110160    International Application No.:    PCT/CA2012/050046
Publication Date: 01.08.2013 International Filing Date: 27.01.2012
Chapter 2 Demand Filed:    27.11.2013    
IPC:
F16K 31/363 (2006.01), E21B 25/02 (2006.01), E21B 34/10 (2006.01), F16K 3/26 (2006.01)
Applicants: ATLAS COPCO CANADA INC. [CA/CA]; 30 rue Montrose Dollard-des-Ormeaux, Québec H9B 3J9 (CA) (For All Designated States Except US).
LAMBERT, Paul [CA/CA]; (CA) (For US Only).
SALVADOR, Patrick [CA/CA]; (CA) (For US Only).
LU, Patrick [CA/CA]; (CA) (For US Only)
Inventors: LAMBERT, Paul; (CA).
SALVADOR, Patrick; (CA).
LU, Patrick; (CA)
Agent: ROBIC LLP; Centre CDP Capital Bloc E - 8th Floor 1001 Square-Victoria Montreal, Québec H2Z 2B7 (CA)
Priority Data:
Title (EN) CORE BARREL VALVE ASSEMBLY
(FR) ENSEMBLE VANNE POUR CAROTTIER
Abstract: front page image
(EN)A valve assembly for use in an inner tube member of a core barrel head assembly positionable within a drill string of a drilling apparatus. The valve assembly works using two separate surfaces A and B and a biasing element with a force FS. When hydrostatic pressure is present forces are created on these surfaces: FA and FB. These forces have a direct relationship with pressure, as an increase in pressure will increase the force and vice versa. The surface areas are designed such that: FA > FB + FS , which will maintain the valve closed while under a pre determined fluid pressure, indicating to the driller that the inner tube has landed. When the driller relieves the fluid pressure and the pressure decreases, the force difference between FA, FB and FS decreases until FA < FB + FS, thus opening the valve for drilling.
(FR)L'invention concerne un ensemble vanne destiné à être utilisé dans un élément tubulaire interne d'un ensemble tête de carottier pouvant être positionné à l'intérieur d'un train de tiges d'un appareil de forage. L'ensemble vanne oeuvre avec deux surfaces séparées A et B et un élément de sollicitation ayant une force FS. En présence d'une pression hydrostatique, des forces se créent sur ces surfaces: FA et FB. Ces forces ont une relation directe avec la pression lorsque l'augmentation de pression augmente la force et vice versa. Les superficies sont conçues de sorte que : FA > FB + FS , ce qui maintiendra la vanne fermée tout en étant sous une pression fluidique prédéterminée, indiquant au foreur que le tube interne est posé. Lorsque le foreur relâche la pression fluidique et que la pression diminue, la différence de force entre FA, FB et FS diminue jusqu'à FA < FB + FS, ce qui ouvre la vanne pour le forage.
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, QA, RO, RS, RU, RW, 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, RW, 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)