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Energy, Water and Hydrofracing : in Texas. Michael H. Young, Jean-Philippe Nicot Bureau of Economic Geology Jackson School of Geosciences The University of Texas at Austin AASG Meeting June 13, 2012. US Precipitation Map – 1961-1990. “Big” shale plays.
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Energy, Water and Hydrofracing: in Texas Michael H. Young, Jean-Philippe NicotBureau of Economic Geology Jackson School of GeosciencesThe University of Texas at Austin AASG Meeting June 13, 2012
US Precipitation Map – 1961-1990 “Big” shale plays Source: Western Regional Climate Center, NOAA, accessed March 2012
Drought Map and Shale Plays in Texas – June 5, 2012 Texas shale plays Source: modified from droughtmonitor.unl.edu, accessed 3/20/12
Drought Map and Shale Plays in Texas – September 21, 2011 Texas shale plays Source: modified from droughtmonitor.unl.edu, accessed 3/20/12 Source: modified from droughtmonitor.unl.edu, accessed 3/20/12
GW/SW Split • Barnett (2006): ~60% groundwater • Barnett (2010): ~40% groundwater • 2010 Haynesville: ~70% groundwater • 2010 Eagle Ford: ~100% groundwater • 2010 Permian Basin: ~100% groundwater Source: TWDB website
Water use projections in Texas Source: Nicot and Scanlon, 2012
Water use versus community population Source: Nicot and Scanlon, 2012
Paths forward • Water sourcing for drilling/fracing should be optimized to reduce future stress on potable water supply. Recycling, reuse and water trading could help. • Alternative fluids should be pursued as quickly as possible, including: • Saline, brackish or reuse waters • Gases – CO2, air, propane • Foams • Understanding water/rock interactions and how pressure build up influences flowback water chemistry and fracture networks are critical and should be pursued.