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Geophysical
Monitoring of Geologic CO2 Sequestration:
Technologies to Slow Global Warming
One approach to reducing the atmospheric carbon footprint of conventional
fossil energy production is the large scale geological sequestration of CO2.
Verifying the geological containment of CO2 requires techniques capable of
remotely monitoring the distribution of injected fluids. Seismic methods,
deployed in a variety of geometries, are one possible component of a comprehensive
monitoring system. ERL develops seismic imaging algorithms capable of reliably
imaging and quantitatively characterizing subsurface fluids.
We are currently exploring tomographic inversion methods which use our knowledge
of multiphase flow processes to better constrain the image reconstruction
problem. Active collaboration with Lawrence Berkeley National Laboratory (LBNL)
and the Texas Bureau of Economic Geology (TBEG) have given us access to the
rich monitoring datasets acquired as part of the Frio I/II pilot sequestration
project.
The
image above shows three different algorithms for CO2 imaging.
Contacts:
Prof. M. Nafi Toksoz (toksoz@mit.edu)