Temperature compensated strain measurement

Details Temperature compensated strain measurement Temperature compensated strain measurement

G - Physics

01

B

G01B 13/24 (2006.01) E21B 49/00 (2006.01) G01N 25/16 (2006.01)

Patent

CA 2592472

The present invention provides methods and apparatus for measuring subterranean strain. The methods and apparatus use fluid expansion principles to compensate for temperature variations and increase the accuracy of the strain measurements. The methods and apparatus contemplate the use of multiple fluid chambers according to some embodiments in order to remove temperature dependence from stress or strain measurements.

L'invention concerne des procédés et un appareil pour mesurer la tension souterraine, qui utilisent des principes de dilatation des fluides pour compenser les variations de température et accroître la précision des mesures de tension. Ces procédés et appareil prévoient d'utiliser plusieurs chambres fluidiques selon certains modes de réalisation afin d'éliminer la dépendance thermique des mesures de contrainte ou de tension.

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