Noble gases identify the mechanisms of fugitive gas contamination in drinking water wells overlying the Marcellus and Barnett Shales
Thomas H. Darrah, Avner Vengosh, Robert B. Jackson, Nathaniel R. Warner, and Robert J. Poreda
Researchers examine hydrocarbon abundance and isotopic compositions to assess whether elevated levels of hydrocarbon gas in drinking water aquifers near gas wells are natural or anthropogenic, and the mechanisms of fugitive gas contamination.
Remote sensing of fugitive methane emissions from oil and gas production in North American tight geologic formations
04 Sep 2014
Oliver Schneising, John P. Burrows, Russell R. Dickerson, Michael Buchwitz, Maximilian Reuter, and Heinrich Bovensmann
Researchers use satellite data to quantify methane emissions from the Bakken, Eagle Ford, and Marcellus basins (USA).
The Environmental Costs and Benefits of Fracking
09 Aug 2014
Robert B. Jackson, Avner Vengosh, J. William Carey, Richard J. Davies, Thomas H. Darrah, Francis O'Sullivan, and Gabrielle Pétron
A comprehensive review of the environmental consequences of unconventional energy extraction and hydraulic fracturing, including production estimates, water intensity, issues of well integrity and potential leakage of chemicals, brines, or gases, water quality, the potential for induced seismicity and the life-cycle emissions of hydrocarbons.
Assessment and risk analysis of casing and cement impairment in oil and gas wells in Pennsylvania, 2000–2012
Anthony R. Ingraffea, Martin T. Wells, Renee L. Santoro, and Seth B. C. Shonkoff
Previous research has demonstrated that proximity to unconventional gas development is associated with elevated concentrations of methane in groundwater aquifers in Pennsylvania. To date, the mechanism of this migration is poorly understood. Our study, which looks at more than 41,000 conventional and unconventional oil and gas wells, helps to explain one possible mechanism of methane migration: compromised structural integrity of casing and cement in oil and gas wells. Additionally, methane, being the primary constituent of natural gas, is a strong greenhouse gas. The identification of mechanisms through which methane may migrate to the atmosphere as fugitive emissions is important to understand the climate dimensions of oil and gas development.
A new look at methane and non-methane hydrocarbon emissions from oil and natural gas operations in the Colorado Denver-Julesburg Basin
Journal of Geophysical Research - Atmospheres
08 May 2014
Gabrielle Pétron, Anna Karion, Colm Sweeney, Benjamin R. Miller, Stephen A. Montzka, Gregory Frost, Michael Trainer, Pieter Tans, Arlyn Andrews, Jonathan Kofler, Detlev Helmig, Douglas Guenther, Ed Dlugokencky, Patricia Lang, Tim Newberger, Sonja Wolter,
The study revisits the estimates of hydrocarbon emissions from an oil and gas basin using airborne measurements and finds that inventories underestimate hydrocarbon emissions in the basin by a factor of 2 or more.
Spatially Explicit Methane Emissions from Petroleum Production and the Natural Gas System in California
Environmental Science & Technology
23 Apr 2014
Seongeun Jeong,* Dev Millstein, and Marc L. Fischer
This study presents a spatially-resolved methane inventory for the state of California based on EPA emission factors and compares the estimated emissions to atmospheric measurements. The study finds that the EPA's methane emission estimates for natural gas transmission and distribution are too low by a factor of 2.
Public Health England’s draft report on shale gas extraction
British Medical Journal
17 Apr 2014
Adam Law, Jake Hays, Seth B. Shonkoff, Madelon L. Finkel
This editorial critique argues for an emphasis on actual practices rather than best practices in public health assessments.
Environmental Public Health Dimensions of Shale and Tight Gas Development
Environmental Health Perspectives
16 Apr 2014
Seth B. Shonkoff, Jake Hays, and Madelon L. Finkel
Toward a better understanding and quantification of methane emissions from shale gas development
Dana R. Caulton, Paul B. Shepson, Renee L. Santoro, Jed P. Sparks, Robert W. Howarth, Anthony R. Ingraffea, Maria O. L. Cambaliza, Colm Sweeney, Anna Karion, Kenneth J. Davis, Brian H. Stirm, Stephen A. Montzka, Ben R. Miller
Understanding exposure from natural gas drilling puts current air standards to the test
Reviews on Environmental Health
David Brown, Beth Weinberger, Celia Lewis, Heather Bonaparte
This study illustrates that current methods of collecting emissions data, as well as the analyses of these data, are not sufficient for accurately assessing risks to individuals or protecting the health of those near UNGD sites.