Optimising DAS VSP data acquisition parameters: theory and experiments at Curtin training well facility

Distributed acoustic sensing (DAS) technology has demonstrated significant progress over the last few years. From being a promising and novel technology where practical applications were limited by the lack of sensitivity, it has advanced to the stage where it can clearly outperform conventional downhole geophones. With a growing number of projects relying on fibre optics as a primary seismic sensing technique, it is important to understand how the specific DAS data acquisition parameters are linked to the quality of the seismic data and the ability to record different components of the wavefield. In this presentation, we will summarise the findings from a series of experiments conducted on the Curtin/NGL training well facility. The focus of this presentation is the relationship of key DAS data acquisition parameters with the quality of the acquired seismic records.