Dept of Earth & Environmental Sciences
Centre for Environmental and Information Technology (EIT)
200 University Ave. W
Waterloo, Ontario, Canada N2L 3G1
Phone: (519) 888-4567
Groundwater, Bubbles, and Energy
Dr. Cathryn Ryan, Professor, Geoscience and BSc Environmental Science Program, University of Calgary
Please join us afterwards for a reception in the first floor foyer of EIT.
Although groundwater samples have long been analysed for dissolved gases in groundwater, we know relatively little about the fate and transport if free phase gas (FPG), or bubbles, in groundwater. We know FPG production and transport occurs in groundwater because we see bubbles in non-thermal environments like wetlands, cold-water geysers, and some volcanic lakes.
The fate and transport of FPG is is increasing relevant in the oil and gas sector, where about 5% of all oil and gas wells leak methane into the atmosphere and/or the groundwater zone, and FPG has been implicated in hydraulic fracturing-induced earthquake activity. Although poorly constrained, the rate of methane production and loss as FGP in reservoirs has called into question the perception of hydropower as a ‘clean energy’ source.
This presentation will cover the basics of free-phase gas occurrence and transport in groundwater, and the implications for transport pathways and rates, sampling and analyses from wells. Related research on geysers as natural analogues for FPG transport around wells will also be presented.
Cathy Ryan is a Professor in Geoscience at the University of Calgary, who had the privilege of being supervised by Bob Farvolden in the mid-1980s.
About the Farvolden Lecture Series and Symposium
The Farvolden Lecture Series, hosted by the Department of Earth and Environmental Sciences, University of Waterloo, was initiated in 1996 as an annual celebration in honour of Dr. Robert N. Farvolden (photo). The Lecture Series fosters interaction and communication between the Department of Earth and Environmental Sciences, the alumni of the hydrogeology program and the groundwater community at large. We welcome you to learn more about supporting the lecture series and the Farvolden Scholarship.
200 University Avenue West
Waterloo, ON N2L 3G1