Brian A. Varela

Trends in hydraulic fracturing distributions and treatment fluids, additives, proppants, and water volumes applied to wells drilled in the United States from 1947 through 2010: data analysis and comparison to the literature

Tanya J. Gallegos, Brian A. Varela, B. Varela, 2015 .

Assessment of surface water chloride and conductivity trends in areas of unconventional oil and gas development—Why existing national data sets cannot tell us what we would like to know

William M. Kappel, Peter J. Cinotto, Tanya J. Gallegos, 2015 .

National assessment of geologic carbon dioxide storage resources: methodology implementation

Peter D. Warwick, Ricardo A. Olea, Philip A. Freeman, 2013 .