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Pub. No.: WO/2018/080958 International Application No.: PCT/US2017/057799
Publication Date: 03.05.2018 International Filing Date: 23.10.2017
Applicants: NATIONAL OILWELL VARCO, L.P.[US/US]; 7909 Parkwood Circle Drive Houston, Texas 77036, US
Inventors: STEFFENHAGEN, Timothy S.; US
WHITE, William Benjamin; US
Agent: FORINASH, Derek V.; US
Priority Data:
(EN) A hinged structure includes a hinge that is actuatable using a hydraulic cylinder. A method of monitoring a load applied to the hinged structure involves leaking the hydraulic fluid from the hydraulic cylinder in a way that compensates for expansion of the hydraulic fluid caused by variations in temperature of the hydraulic fluid. The method further involves measuring the pressure of the hydraulic fluid in the hydraulic cylinder. The hydraulic cylinder may be part of a coiled tubing injector. The load applied to the hydraulic cylinder may be used to indicate an overload of the tubing guide.
(FR) L'invention concerne une structure articulée comprenant une articulation qui peut être actionnée au moyen d'un vérin hydraulique. Un procédé de surveillance d'une charge appliquée à la structure articulée consiste à laisser s'échapper du fluide hydraulique du vérin hydraulique d'une manière qui compense l'expansion du fluide hydraulique provoquée par des variations de température du fluide hydraulique. Le procédé consiste en outre à mesurer la pression du fluide hydraulique dans le vérin hydraulique. Le vérin hydraulique peut faire partie d'un injecteur de tube de production concentrique. La charge appliquée au vérin hydraulique peut être utilisée pour indiquer une surcharge du guide de tube de production.
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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)