APPLICATIONS OF TECHNOLOGY:
- Oil and gas exploration and production
- Monitoring civil engineering structures including dams, levees, structures
- Easily installed using standard casing deployments
- More sensitive than previous fiber-optic sensors
Barry Freifeld of Berkeley Lab has developed a compact fiber-optic acoustic sensor for the characterization of subsurface oil and gas reservoirs and for monitoring the condition of dams, levees, or other engineered structures.
The Berkeley Lab technology will help industry overcome the challenge of protecting fiber-optic cables from the harsh conditions of wellbore installation and cementing, allowing industry to leverage the exceptional sensitivity of fiber optics to acoustic energy from all incident angles. Unlike previous fiber-optic cable sensors, the Berkeley Lab technology’s low form factor allows it to be installed either adjacent to a well casing or embedded within, without the additional cost of widening boreholes and altering permanent cement casings.
The superior sensitivity of the Berkeley Lab acoustic fiber-optic sensor is due to its unique optical fiber configuration, which limits optical losses when the fiber cable is folded or coiled inside the sensor housing. The sensor’s design allows the deployment of large numbers of three component sensors facilitating permanent active-source and passive monitoring.
DEVELOPMENT STAGE: Concept
STATUS: Patent pending. Available for licensing or collaborative research.
SEE THESE OTHER BERKELEY LAB TECHNOLOGIES IN THIS FIELD:
REFERENCE NUMBER: IB-2013-106