Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2014209859) WELL CONDUCTOR STRAIN MONITORING
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/209859 International Application No.: PCT/US2014/043615
Publication Date: 31.12.2014 International Filing Date: 23.06.2014
Chapter 2 Demand Filed: 15.12.2014
IPC:
G01B 11/16 (2006.01) ,G01B 11/24 (2006.01) ,G02B 6/34 (2006.01)
G PHYSICS
01
MEASURING; TESTING
B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11
Measuring arrangements characterised by the use of optical means
16
for measuring the deformation in a solid, e.g. optical strain gauge
G PHYSICS
01
MEASURING; TESTING
B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11
Measuring arrangements characterised by the use of optical means
24
for measuring contours or curvatures
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24
Coupling light guides
26
Optical coupling means
34
utilising prism or grating
Applicants:
NAVAL UNDERSEA WARFARE CENTER [US/US]; Division Newport 1176 Howell Street Code 00oc, Bldg 102t Newport, RI 02841, US
Inventors:
RUFFA, Anthony, A.; US
Agent:
STANLEY, Michael, P.; US
Priority Data:
14/270,51606.05.2014US
61/839,42926.06.2013US
Title (EN) WELL CONDUCTOR STRAIN MONITORING
(FR) SURVEILLANCE DE CONTRAINTE DE CONDUCTEUR DE PUITS
Abstract:
(EN) A well conductor strain monitoring system is provided which includes a plurality of fiber optic Bragg grating sensors written onto a single optical fiber. Cable strands are wound around the optical fiber to form an armored cable protecting the fiber. The armored cable is further integrated into a strength cable to provide robustness. This strength cable is then wrapped around the conductor under tension and anchored at both ends. The cable is wound at a prescribed angle so as to have multiple wraps around the conductor. Once tensioned, the cable remains stationary against the conductor and holds a position. The strain gages are spaced along the optical fiber, such that the strain gages are oriented 90 degrees apart when the cable is wrapped about the conductor. This orientation supports the estimation of bending in any direction.
(FR) La présente invention concerne un système de surveillance de contrainte de conducteur de puits qui comprend une pluralité de capteurs de réseau de Bragg à fibres optiques imprimés sur une seule fibre optique. Des torons de câble sont enroulés autour de la fibre optique pour former un câble armé protégeant la fibre. Le câble armé est en outre intégré à un câble de portage pour apporter de la robustesse. Ce câble de portage est ensuite enroulé autour du conducteur tendu et ancré au niveau des deux extrémités. Le câble est enroulé selon un angle prescrit de façon à présenter plusieurs enroulements autour du conducteur. Une fois tendu, le câble reste immobile contre le conducteur et reste en position. Les jauges extensométriques sont espacées le long de la fibre optique, de sorte qu'elles soient espacées de 90° les unes des autres lorsque le câble est enveloppé autour du conducteur. Cette orientation supporte l'estimation de courbure quelle que soit la direction.
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, 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, 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, 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, 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)