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Using a Fibre Optic Cable as Distributed Acoustic Sensor for Vertical Seismic Profiling at the Ketzin CO2 Storage Site
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2015
Year
Optical Fibre CableEngineeringSeismic WaveVertical Seismic ProfilingVibration MeasurementFibre Optic CableFiber OpticsAcoustic SensorVibration SensingDistributed Acoustic SensorSeismic AnalysisVsp CubeInstrumentationEarthquake EngineeringSeismic ImagingFiber Optic SensingStructural Health MonitoringSeismologySeismic Reflection ProfilingCivil EngineeringUnderwater SensingDistributed Sensing
Summary Fibre optic Distributed Acoustic Sensing (DAS) or Distributed Vibration Sensing (DVS) is a technology that uses an optical fibre cable as a sensor for acoustic signals. Within the last years, DAS/DVS was further developed to record seismic data. We present a successful DAS/DVS-VSP (Vertical Seismic Profiling) field test performed at the Ketzin CO2 storage site, Germany. It was possible to record 23 VSP source points simultaneously within four wells and to build a small 3D VSP cube. The DAS/DVS-VSP cube complements the 3D surface seismic by providing a focused high resolution image below the injection site.