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1. (WO2017132433) HYDRAULIC CIRCUIT FOR CONTROLLING A MOVABLE COMPONENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/132433 International Application No.: PCT/US2017/015221
Publication Date: 03.08.2017 International Filing Date: 27.01.2017
IPC:
E21B 33/035 (2006.01) ,F15B 13/02 (2006.01) ,F15B 13/042 (2006.01) ,F15B 11/08 (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
33
Sealing or packing boreholes or wells
02
Surface sealing or packing
03
Well heads; Setting-up thereof
035
specially adapted for underwater installations
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
13
Details of servomotor systems
02
Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
13
Details of servomotor systems
02
Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
04
for use with a single servomotor
042
operated by fluid pressure
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
08
with only one servomotor
Applicants:
NATIONAL OILWELL VARCO, L.P. [US/US]; 7909 Parkwood Circle Drive Houston, Texas 77036, US
Inventors:
COWAN, Richard W.; US
WEIR, James William; US
SPRINGETT, Frank Benjamin; US
MILLER, Travis James; US
LANDRITH, James; US
Agent:
FORINASH, Derek V.; US
Priority Data:
62/288,60929.01.2016US
62/340,74024.05.2016US
Title (EN) HYDRAULIC CIRCUIT FOR CONTROLLING A MOVABLE COMPONENT
(FR) CIRCUIT HYDRAULIQUE POUR COMMANDER UN COMPOSANT MOBILE
Abstract:
(EN) Hydraulic circuits for controlling a movable component use one or more of a plurality of fluid supplies. Pressurized fluid flowing from one supply is routed toward the component and is not inadvertently vented into another fluid supply, or into an exit port. A backflow path is provided for fluid returning from the hydraulic component when the component is actuated in a reversed direction. The hydraulic circuits can be used, for example, on blowout preventers in a subsea environment.
(FR) La présente invention concerne des circuits hydrauliques pour commander un composant mobile au moyen d’une ou plusieurs d’une pluralité de distributions de fluide. Un fluide sous pression s’écoulant depuis une distribution est acheminé vers le composant et n’est pas involontairement évacué dans une autre distribution de fluide, ou dans un orifice de sortie. Un trajet de reflux est disposé pour le retour de fluide depuis le composant hydraulique lorsque le composant est actionné dans une direction inverse. Les circuits hydrauliques peuvent être utilisés, par exemple, sur des blocs d’obturation de puits dans un environnement sous-marin.
front page image
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, 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 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:
US20190055963