The changes in the water intensity of hydraulic fracturing with time

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Presentation transcript:

Fig. 4 The changes in the water intensity of hydraulic fracturing with time. The changes in the water intensity of hydraulic fracturing with time. Water-use intensity variations with time for hydraulic fracturing of shale gas (A) and tight oil (C) regions and corresponding FP water/water use ratios in shale gas (B) and tight oil (D) regions. Water-use intensity is defined as the amount of water required to generate a unit of energy. (A) and (B) show the water-use intensity for shale gas–producing regions, while (C) and (D) show water-use intensity for unconventional oil-producing regions. Whiskers represent 95% bootstrap confidence intervals. Andrew J. Kondash et al. Sci Adv 2018;4:eaar5982 Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).