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VERSION:2.0
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CALSCALE:GREGORIAN
X-WR-CALNAME:FISH - Boris Gurevich (Curtin U.)
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260616T114549Z
UID:tag:localist.com\,2008:EventInstance_42960130167503
DTSTART:20230414T160000Z
DTEND:20230414T170000Z
DESCRIPTION:Title: Continuous downhole fibre-optic seismic observations dur
 ing a CO2 injection into a deep aquifer Abstract: Geological carbon storag
 e (GCS) requires frequent monitoring to ensure timely detection of unwante
 d CO2 migration. 4D seismic can track a CO2 plume in space and time\, but 
 cost\, logistics and environmental footprint limit the frequency of monito
 r surveys. This challenge can be addressed by continuous active seismic mo
 nitoring with permanent sources and receivers. This approach was explored 
 at the Otway International Test Centre in the Australian state of Victoria
 \, where injection of 15 kt of CO2 into a sandstone aquifer 1500 m deep wa
 s monitored by continuously acquired vertical seismic profiling with downh
 ole fibre-optic distributed acoustic sensors (DAS) cables as receivers and
  permanently mounted vibrators as sources. Inaddition to the active seismi
 c monitoring\, the downhole DAS system acquired two years of passive data 
 (starting 7 months before 3-months injection). Analysis of these data reve
 als local (injection-induced)\, regional and global seismicity.  The obser
 ved data show a direct signature of fluid-pressure changes as well as temp
 oral variations of amplitudes and travel times (of signals from active and
  passive sources) caused by changes of CO2 saturation. Bio: Boris Gurevich
  has MSc in Geophysics from Moscow State University (1976) and PhD from In
 stitute of Geosystems\, Moscow\, Russia (1988). After several research app
 ointments in Germany\, UK and Israel\, in 2001\, he joined Curtin Universi
 ty where he currently serves as John Curtin Distinguished Professor and Di
 rector of the Centre for Exploration Geophysics. He has over 100 journal p
 ublications in the areas of physics of rocks\, poroelasticity and geophysi
 cal monitoring.\n\n \n\nAbout this series: MIT Earth Resources Laboratory'
 s Friday Informal Seminar features guest speakers from industry and academ
 ia on topics relevant to our lab\, including geophysics\, seismology\, roc
 k physics\, imaging\, inversion\, machine learning\, and the energy indust
 ry. Titles and abstracts will be posted here when available. Contact fish_
 seminar_organizers@mit.edu for more information and Zoom password.
GEO:42.360158;-71.089183
LOCATION:Building 54\, Room 209
SUMMARY:FISH - Boris Gurevich (Curtin U.)
URL;VALUE=URI:https://calendar.mit.edu/event/fish_boris_Gurevich
CATEGORIES:Conferences/Seminars/Lectures
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