G - Physics – 01 – K
Patent
G - Physics
01
K
G01K 11/32 (2006.01) E21B 47/06 (2006.01)
Patent
CA 2571772
Methods and apparatus allowing distributed temperature sensing (DTS) measurements to be compensated for differential and/or varying loss between Raman Stokes and anti-Stokes signals are provided. By irradiating an optical waveguide with signals at wavelengths at or near the Raman Stokes and anti-Stokes bands, a distributed loss profile for the waveguide may be generated. This distributed loss profile may be used to adjust the amplitudes or amplitude ratios of Raman Stokes and anti--Stokes signals used in DTS measurements, which may lead to more accurate DTS profiles.
L'invention porte sur des procédés et appareils servant à déterminer des façons de compenser les mesures de détection de température répartie pour d'éventuelles pertes différentielles et/ou variables entre des signaux Raman Stokes et anti-Stokes. En irradiant un guide d'ondes optique avec des signaux d'une longueur d'onde comprise dans les bandes Raman Stokes et anti-Stokes on peut engendrer un profil de perte répartie pour le guide d'ondes. Ledit profil peut être employé pour ajuster les amplitudes ou les ratios d'amplitudes des signaux Raman Stokes et anti-Stokes utilisés dans les mesures de détection de température répartie, ce qui pourrait mener à des profils correspondants plus précis.
Macdougall Trevor
Taverner Domino
Deeth Williams Wall Llp
Weatherford/lamb Inc.
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