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Comparison of Water Use for Hydraulic Fracturing for Unconventional Oil and Gas versus Conventional Oil

Scanlon, B. R ; Reedy, R. C ; Nicot, J.-P

Environmental science & technology, 2014-10, Vol.48 (20), p.12386-12393 [Periódico revisado por pares]

Washington, DC: American Chemical Society

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Título:
Comparison of Water Use for Hydraulic Fracturing for Unconventional Oil and Gas versus Conventional Oil
Autor: Scanlon, B. R ; Reedy, R. C ; Nicot, J.-P
Assuntos: Applied sciences ; Comparative analysis ; Crude oil, natural gas and petroleum products ; Crude oil, natural gas, oil shales producing equipements and methods ; Energy ; Enhanced oil recovery methods ; Exact sciences and technology ; Fossil Fuels - statistics & numerical data ; Fuels ; Gas well production ; Gases ; Hydraulic Fracking - statistics & numerical data ; Hydraulic fracturing ; Minerals ; Oil ; Oil recovery ; Petroleum production ; Prospecting and production of crude oil, natural gas, oil shales and tar sands ; United States ; Water ; Water Supply - statistics & numerical data
É parte de: Environmental science & technology, 2014-10, Vol.48 (20), p.12386-12393
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: We compared water use for hydraulic fracturing (HF) for oil versus gas production within the Eagle Ford shale. We then compared HF water use for Eagle Ford oil with Bakken oil, both plays accounting for two-thirds of U.S. unconventional oil production in 2013. In the Eagle Ford, we found similar average water use in oil and gas zones per well (4.7–4.9 × 106 gallons [gal]/well). However, about twice as much water is used per unit of energy (water-to-oil ratio, WOR, vol water/vol oil) in the oil zone (WOR: 1.4) as in the gas zone (water-to-oil-equivalent-ratio, WOER: 0.6). We also found large differences in water use for oil between the two plays, with mean Bakken water use/well (2.0 × 106 gal/well) about half that in the Eagle Ford, and a third per energy unit. We attribute these variations mostly to geological differences. Water-to-oil ratios for these plays (0.6–1.4) will further decrease (0.2–0.4) based on estimated ultimate oil recovery of wells. These unconventional water-to-oil ratios (0.2–1.4) are within the lower range of those for U.S. conventional oil production (WOR: 0.1–5). Therefore, the U.S. is using more water because HF has expanded oil production, not because HF is using more water per unit of oil production.
Editor: Washington, DC: American Chemical Society
Idioma: Inglês

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Comparison of Water Use for Hydraulic Fracturing for Unconventional Oil and Gas versus Conventional Oil

Scanlon, B. R ; Reedy, R. C ; Nicot, J.-P

Washington, DC: American Chemical Society

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