Reliable monitoring to protect people and the environment
Understanding seismic hazards and the associated risks helps protect people and the environment. Dense spatial sampling over long distances enables detailed monitoring and imaging with large-aperture arrays.
Unlike traditional point sensors, Silixa’s iDAS permits seismic monitoring over a wide area with only one recording device (one interrogator). Existing fibre networks can be used, providing a high-density array with minimal deployment effort and maintenance.
Silixa’s monitoring solution captures the entire wavefield offering unprecedented data quality
The dense spatial and temporal sampling provided by the system captures the full wavefield giving data with unprecedented detail and ideal for imaging and full-waveform studies.
Flexibility in deployment possibilities enable the use of iDAS in harsh, high/low temperature and remote environments
Fibre-optic cables can be designed for high-temperature environments or harsh environments (e.g., geothermal settings). Cables can be deployed on the surface or in boreholes where they can be cemented behind casing, strapped to tubing or deployed by wireline. Installations can be permanent or temporary.
Fibres can be deployed along cased active wells, removing the need for a dedicated monitoring well. The same fibre-optic cable installation can be used for on-demand repeat measurements for many years.
Remote operation of data collection facilitates time-lapse surveys on-demand
iDAS data collection can be performed remotely once the interrogator is installed. This allows time-lapse monitoring or instant survey capability following an event of interest. The remote data collection enables seismic surveys with a low environmental footprint in environmentally sensitive areas.
Multiple measurements possible with one cable
Using the same fibre-optic cable seismic (DAS) measurements can be combined with strain (DSS) and temperature (DTS) measurements to facilitate integrated interpretation and provide greater insight into links between seismic events and fluid flow and ground deformation.
Significant cost-savings are ensured by leveraging pre-existing fibre networks
iDAS data can be recorded using pre-existing fibre networks, including submarine telecommunication cables, so-called dark fibres. iDAS works equally well on both SM and MM fibres. This provides dense seismic monitoring at a relatively low cost.
Extra wide broadband sensitivity enables the full range of seismic measurements.
Silixa’s iDAS has a broadband frequency response, from 0.001 Hz to 50 kHz, making the technology applicable to the full range of seismic measurements, from teleseismic earthquake to microseismic event detection.