Mealey's (June 17, 2015, 4:46 PM EDT) -- RESTON, Va. — The U.S. Geological Survey (USGS) on Jan. 12 issued a report in which it said the various approaches to the process of hydraulic fracturing are “neither temporally nor spatially equivalent”; therefore, comparisons and assumptions regarding attributes of individual applications should be made with caution.

(Report available. Document #94-150210-021X.)

Report

The USGS report, titled “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...