Tag Archive: abandoned wells

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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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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Towards a Road Map for Mitigating the Rates and Occurrences of Long-Term Wellbore Leakage

Towards a Road Map for Mitigating the Rates and Occurrences of Long-Term Wellbore Leakage Key findings: “… the severity of the problem is not known because neither industry or oil and gas regulators are collecting the data.” Natural gas seeping from 500,000 wellbores represent “a threat to environment and public safety” due to groundwater contamination, …

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Permanent link to this article: http://frack-free.rocks/towards-a-road-map-for-mitigating-the-rates-and-occurrences-of-long-term-wellbore-leakage/

Oil and gas wells and their integrity: Implications for shale and unconventional resource exploitation

Oil and gas wells and their integrity: Implications for shale and unconventional resource exploitation Author(s): Richard J. Davies, Sam Almond, Robert S. Ward, Robert B. Jackson, Charlotte Adams, Fred Worrall, Liam G. Herringshaw, Jon G. Gluyas, Mark A. Whitehead Date: 08.2014 Key findings: Oil and gas wells that were drilled over the last 100 years …

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Permanent link to this article: http://frack-free.rocks/oil-and-gas-wells-and-their-integrity-implications-for-shale-and-unconventional-resource-exploitation/

CO2, Methane, and Brine Leakage Through Subsurface Pathways: Exploring Modeling, Measurement, and Policy Options

Subsurface pathways, such as abandoned oil and gas wells and faults, can serve as leakage pathways for CO2 , methane, brine, and other fluids. These pathways allow fluids from deep subsurface formations to migrate into shallow groundwater aquifers or to the atmosphere. Between 200,000 and 970,000 abandoned wells in the state of Pennsylvania likely account …

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Permanent link to this article: http://frack-free.rocks/co2-methane-and-brine-leakage-through-subsurface-pathways-exploring-modeling-measurement-and-policy-options/

Evaluation of the Potential for Gas and CO2 Leakage Along Wellbores

Evaluation of the Potential for Gas and CO2 Leakage Along Wellbores Author(s): Stefan Bachu and Theresa Watson Date: 03.2009 Source/Publisher: SPE Drilling & Completion 01/2009; 24(1):115-126. DOI: 10.2118/106817-MS ABSTRACT Implementation of CO2 storage in geological media requires proper assessment of the risk of CO2 leakage from storage sites. Leakage pathways may exist through and along …

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Permanent link to this article: http://frack-free.rocks/evaluation-of-the-potential-for-gas-and-co2-leakage-along-wellbores/

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