Experimental study on transient response of the fiber optic seismic accelerometer

Abstract

Abstract Transient response accuracy of the fiber optic seismic accelerometer influences greatly the seismic reservoir monitoring in the smart oilfield fields. This study demonstrates the transient response analysis of an optimized fiber optic seismic accelerometer, and the effects of damping on the transient response are experimentally verified. The silicone oil is injected into the accelerometer structure to increase the damping, and an additional elastic rubber ring is used to provide an adjustable damping. The experimental results show that the injected silicone oil increases obviously the stamper damping, and the variations of torsional moment also modify slightly the damping of the accelerometer. The increase of the damping avoids the oscillation tailing phenomenon, and therefore largely improves the transient response, which is confirmed by the commercial piezoelectric accelerometer. This study can be used to modify the measurement error and improve the accuracy of the seismic reservoir monitoring in the smart oilfield applications.