Simultaneous accelerometer and optical fibre multi-azimuth walk-away VSP experiment: Newell County, Alberta, Canada

Abstract

CREWES conducted a high-resolution multi-azimuth walk-away three-component vertical seismic profile (VSP) survey at the Containment and Monitoring Institutes Field Research Station (CaMI.FRS) in September 2018. This data is primarily intended for use in full-waveform inversion (FWI) and modelling studies. The FRS has three wells, referred to here (from SW to NE) as the geophysics, injection and geochemistry wells. The 2018 VSP had thirteen source lines, four acquired with a 10 m Vibe Point (VP) spacing and the remainder acquired with a 60 m VP spacing. The source was an Inova Univib running a linear 1-150 Hz sweep with two sweeps per VP. In addition to existing permanent 3C geophones and optical fibre, a string of Inova 3C VectorSeis accelerometers was deployed in the geophysics well for this survey from surface to bottom hole. The accelerometer data are currently undergoing zero-offset and far-offset VSP processing. First-break picks sorted by offset and azimuth confirm the presence of very weak HTI anisotropy at the FRS, as observed on a single offset semi-circular walk-around VSP recorded in the injection well in 2015. Presentation Date: Wednesday, September 18, 2019 Session Start Time: 8:30 AM Presentation Start Time: 11:00 AM Location: 303B Presentation Type: Oral