During multi-stage reservoir stimulation, low-frequency DAS (LF‑DAS) using a FEBUS A1 system in a monitoring well provides a different and highly valuable perspective -not only on where the injection is performed, but on where fractures actually propagate.
A field example highlights several key insights:
- Consistent fracture pathway and preferred trajectory
- Real fracture propagation, showing how fractures develop in space beyond simple planar models
- Network complexity and dominant branches.
Higher LF‑DAS signal raises key questions:- Are fractures larger or more active?
- Are fractures located closer to the monitoring well?
- Or is it a combination of both?
- Stress interactions revealed around fractures
