Call for Papers
Call for Papers for “Seismic and micro-seismic signature of fluids in rocks: Bridging the scale gap ”
Submission acceptance begins: 1 October 2016
Submission deadline: Extended to 30 June 2017
Special Guest Organizers: Joel Sarout, Commonwealth Scientific and Industrial Research Organisation, Perth, Australia
Christian David, University of Cergy-Pontoise, Cergy-Pontoise, France
Lucas Pimienta, Ecole Normale Superieure, Paris, France
Seismology, geophysics and rock physics are disciplines aimed at understanding the structure and dynamics of the subsurface using seismic and micro-seismic monitoring techniques. Typical applications requiring this knowledge include exploration for and production of hydrocarbon resources, monitoring carbon dioxide geo-sequestration, and recovery of geothermal energy. A common denominator for these applications is the need to characterize fluid migration, substitution and diffusion and their effects on underground rock formations during fluids injection and withdrawal operations. The scales of observation and frequency of probing involved cover a wide range: from millimeters (rock physics experimentation) to kilometers (seismology) and from sub-hertz to megahertz. Contrasting observations or interpretations are often made at these various scales/frequencies, and discrepancies need to be explained in physical terms in order to predict effectively the evolution of the rock formation of interest. Bridging this scale gap motivated the research workshop “Seismic and micro-seismic signature of fluids in rocks: Bridging the scale gap” held June 13, 2016 at the University of Cergy-Pontoise, France, and jointly sponsored by the Institute for Advanced Studies and the Department of Geoscience and Environment. The objective of the workshop was to gather seismology, geophysics and rock physics experts to share information on laboratory experimentation and field studies on reservoir rocks such as sandstones or carbonates, and tighter rocks such as granites. The practical aim of the workshop was two-fold: (i) discuss the commons and differences between the scales of observation; (ii) identify the knowledge gaps and explore the possible ways to overcome them in order to reconcile laboratory experimentation and field data interpretation. This exchange of information will ultimately contribute to a better understanding of how fluid injection, substitution and diffusion in the subsurface affect pore/effective pressure, micro-seismic activity, rock strength, and the potential for faulting and fault reactivation. The discussions at the workshop were guided by the following questions:
• How to optimize the design of laboratory experiments to provide the most relevant data for field-scale interpretation;
• How to optimize the design of field testing/monitoring and making the best use of laboratory data;
• Identify the best-suited theoretical tools for upscaling.
This Special Collection in the Journal of Geophysical Research – Solid Earth will be a record of our state of understanding of the impact of fluids on our ability to remotely monitor the evolution of underground rock formations in a reliable way. Manuscripts are invited for a special section related to the theme of the workshop.
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