Category Archive: Mining research

Quantity of flowback and produced waters from unconventional oil and gas exploration

Key findings: Estimated flowback and produced water volume from unconventional oil and gas wells is 1.7 to 14.3 million liters per well. Only a small fraction (4-8%) of the flowback and produced waters is composed of returned injected hydraulic fracturing fluids. The majority (92-96%) of flowback and produced waters is composed of naturally occurring formation …

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A risk assessment tool applied to the study of shale gas resources

mash up of a pic of the Zuma spill and a fracking risk formula

In this paper a new, versatile method for assessing the overall risk of hydraulic fracturing in shale is presented. The method is supposed to predict the probability of adverse events of the technique in a specific location and has been tested in a shale field in Asturias (Spain). Its authors propose the application of this …

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Hydraulic fracturing in thick shale basins: problems in identifying faults in the Bowland and Weald Basins, UK

Abstract. North American shale basins differ from their European counterparts in that the latter are one to two orders of magnitude smaller in area, but correspondingly thicker, and are cut or bounded by normal faults penetrating from the shale to the surface. There is thus an inherent risk of groundwater resource contamination via these faults …

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Permanent link to this article: http://frack-free.rocks/3305-2/

Stress changes before and after the Wenchuan Earthquake using hydraulic fracturing measurements

This study draws conclusions from data gathered over a period of 10 years in the earthquake prone area of the Longmenshan fault belt, Sichuan, China. They used the method of in situ stress measurement by applying hydraulic fracturing and conducted measurement campaigns before and after the devastating quake in the Wenchuan Valley in 2008 in …

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Permanent link to this article: http://frack-free.rocks/stress-changes-before-and-after-the-wenchuan-earthquake-using-hydraulic-fracturing-measurements/

Shale Gas, an International Guide [updated]

Baker & McKenzie Creates Innovative Guide to Global Shale Gas Development Press release Houston, USA, February 10, 2014 – As shale gas continues to revolutionize the US energy market and shale development spreads to additional countries, Baker & McKenzie has published an International Guide to Shale Gas as a resource for companies looking at global …

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Permanent link to this article: http://frack-free.rocks/shale-gas-an-international-guide/

Impacts of shale gas extraction on the environment and on human health – 2012 update

This study discusses the possible impacts of hydraulic fracturing on the environment and on human health updating a study published in 2011. Detailed studies of environmental risks arising from unconventional gas extraction activities have been published recently on European and national levels substantially broadening and deepening the scientific basis. However, knowledge and availability of information …

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Permanent link to this article: http://frack-free.rocks/impacts-of-shale-gas-extraction-on-the-environment-and-on-human-health-2012-update/

Water Management Challenges Associated with the Production of Shale Gas by Hydraulic Fracturing

“With global concerns over the quality and quantity of fresh water, novel water management strategies and treatment technologies that will enable environmentally sustainable and economically feasible natural gas extraction will be critical for the development of this vast energy source.” Bibliography: Kelvin B. Gregory, Radisav D. Vidic, and David A. Dzombak Water Management Challenges Associated …

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Permanent link to this article: http://frack-free.rocks/water-management-challenges-associated-with-the-production-of-shale-gas-by-hydraulic-fracturing/

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