Category Archive: Well integrity

Spatial Risk Analysis of Hydraulic Fracturing near Abandoned and Converted Oil and Gas Wells

This analysis shows that abandoned oil and gas wells – some of them converted into water wells – can be intersected by multiple stimulated reservoirs, and risks for intersection would increase if currently permitted horizontal wells in the Eagle Ford Shale are actually completed. Abstract Interaction between hydraulically generated fractures and existing wells (frac hits) …

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Permanent link to this article: http://frack-free.rocks/spatial-risk-analysis-of-hydraulic-fracturing-near-abandoned-and-converted-oil-and-gas-wells/

Shale Gas Production in England – an updated public health assessment

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Medact released in July 2016 an updated assessment of the potential health impacts of shale fracking in England.  This new report reaches broadly the same conclusions as our 2015 report Health and Fracking, however it is now supported by a much larger body of evidence published in the year since the first report was produced.  In the …

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Permanent link to this article: http://frack-free.rocks/shale-gas-production-in-england-an-updated-public-health-assessment/

Groundwater methane in relation to oil and gas development and shallow coal seams in the Denver-Julesburg Basin of Colorado

Example of a wellbore failure (Graphic: Sherwood et al., PNAS 2016)

Abstract: Unconventional oil and gas development has generated intense public concerns about potential impacts to groundwater quality. Specific pathways of contamination have been identified; however, overall rates of contamination remain ambiguous. We used an archive of geochemical data collected from 1988 to 2014 to determine the sources and occurrence of groundwater methane in the Denver-Julesburg …

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Permanent link to this article: http://frack-free.rocks/groundwater-methane-in-relation-to-oil-and-gas-development-and-shallow-coal-seams-in-the-denver-julesburg-basin-of-colorado/

Influence of Hydraulic Fracturing on Overlying Aquifers in the Presence of Leaky Abandoned Wells

Abandoned oil and gas wells in the vicinity of frac operations or fracked wells might be leaky or become so due to intersecting cracks or high pressure of fracked wells nearby, this study shows. The potential impact of leaks on overlying groundwater tables is explored by numerical models, based on historical records and available industry …

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Permanent link to this article: http://frack-free.rocks/influence-of-hydraulic-fracturing-on-overlying-aquifers-in-the-presence-of-leaky-abandoned-wells/

Fugitive emissions from the Bakken shale illustrate role of shale production in global ethane shift

Ethane is one of the most abundant, powerful greenhouse gases. This study found out that The Bakken shale in North Dakota accounted for 1-3% total global ethane emissions in 2014 These findings highlight the importance of shale production in global atmospheric ethane shift These emissions impact air quality and influence interpretations of recent global methane …

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Permanent link to this article: http://frack-free.rocks/fugitive-emissions-from-the-bakken-shale-illustrate-role-of-shale-production-in-global-ethane-shift/

Endocrine disrupting activities of surface water associated with an oil and gas industry wastewater disposal site

Because of key data gaps that exist in understanding the potential impact of underground injection of hydraulic fracturing wastewater on surface water quality and environmental health the goal of this study was to assess endocrine disrupting activity in surface water at a West Virginia injection well disposal site. Compared to reference water extracts upstream and …

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Permanent link to this article: http://frack-free.rocks/endocrine-disrupting-activities-of-surface-water-associated-with-a-oil-and-gas-industry-wastewater-disposal-site/

Fracking by the numbers: Experience after 10 years

In a single year, fracking wells across the country released at least 5.3 billion pounds of the potent greenhouse gas methane, as much global warming pollution as 22 coal-fired power plants. This statistic is one of many in a new study by Environment America Research & Policy Center that quantifies the environmental harm caused by …

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Permanent link to this article: http://frack-free.rocks/fracking-by-the-numbers-experience-after-10-years/

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