Title

Applications of Fiber-optic Distributed Acoustic Sensing (DAS) in the Energy Industry

Document Type

Lecture

Publication Date

9-30-2015

Abstract

Fiber-optic distributed sensing (DAS) technology has the potential to replace conventional discrete electronic-based sensors, for applications where multivariable measurements, low-power system, fine spatial resolution, and harsh (extreme temperature and/or pressure) operational environment are key factors in choosing the type of sensors used. For geotechnical applications, fiber-optic cables are used as spatial distributed sensors for sensing ground motion. Unlike traditional geophones, a fiber-optic cable itself functions as continuous array of seismic sensors with fine spatial resolution (~ 1 meter). In contrast to conventional geophones, fiber-optic cables are resilient to various environment constraints, and economical in terms of field-deployment. CO2 storage monitoring in the borehole, locating seismic events during hydraulic fracturing, and probing integrity of existing mines and support structures are some of the geophysical applications of the fiber-optic DAS system.

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Comments

Khalid Miah earned a B.S. (Aerospace Engineering) and both an M.S. and Ph.D. (Electrical Engineering) from the University of Texas in Austin. Dr. Miah was a postdoctoral research fellow at the University of Alberta, Canada in Computational Geophysics. He was a Visiting Fellow with the Geological Survey of Canada in Ottawa. Currently, he is an Assistant Professor in Geophysical Engineering at Montana Tech. His research interests include developing fiber-optic DAS system for geotechnical applications, passive seismic interferometry, and 3D multi-component data analysis for VMS deposits.

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