A 3-Component Fiber Optic Accelerometer for Well Logging

Abstract

A 3-component(3-C) fiber-optic accelerometer suitable for well logging is presentedThe accelerometer can accomplish the 3-C measurement by multiplexing three unidirectional sensing elements,in which every one is based on a push-pull mass-spring structureExperimental results show good linearity,consistency and stabilityThe suitable measurement frequency range of the system is between 10 Hz and 800 HzThe difference between on-axis sensitivity and cross-sensitivity is 32 dB re rad/g,and minimum detectable level is 393 μg/Hz~(1/2)