A directional DAS sensor and multi-component geophone comparison

Kevin W. Hall, Kristopher A. H. Innanen

Two surveys were acquired at the Containment and Monitoring Institute Field Research Station (CaMI.FRS) in 2018 that have common shots recorded on optical fibre (strain-rate; VSP and directional DAS surveys), geophones (velocity; VSP and directional DAS surveys), and accelerometers (acceleration; VSP survey only). Accelerometer data may be integrated to compare to geophone data, and we propose to further convert integrated accelerometer and unmodified geophone data to strain-rate by simply subtracting two traces, dividing by the distance between them, and plotting the result at a position halfway between the original traces.