The paper, Noble gases identify the mechanisms
of fugitive gas contamination in drinking - water wells overlying the Marcellus and Barnett Shales, was published in the Proceedings of the National Academy of Sciences (PNAS)
Not exact matches
And it remains to be seen whether natural
gas delivers environmental benefits — such as reduced emissions
of carbon dioxide when burned — given that it in itself is a potent greenhouse
gas if it escapes during drilling or pipeline operations, so - called
fugitive emissions.
Banks suggests that reconciling those rights agreements could lead to a shift in the way coal mining companies view methane
gas, treating it as a potential source
of revenue rather than a
fugitive gas to be dealt with as a safety or environmental concern.
«The very limited current data on
fugitive methane leakage also suggests that a relatively small number
of oil and
gas operations may be responsible for a large fraction
of the methane leakage,» he said.
«It is quite possible to produce natural
gas with minimal «
fugitive» emissions,» says Mark Brownstein
of the EDF.
He estimates that
fugitive emissions are only 10 percent
of what Howarth and Ingraffea maintain, and that shale
gas would indeed be a good replacement for home heating oil and for coal used in power plants.
The mega-leak has drawn attention to the broader problem
of fugitive emissions from natural
gas production, processing, pipeline and storage infrastructure across the country.
These include increased use
of renewable natural
gas, reduced
fugitive methane emissions, less need for synthetic fertilizers, and increased land restoration.
But a study published Monday adds to the growing evidence those escaping
gases, called «
fugitive» emissions, are numerous, especially methane emissions while a well is being drilled, a phase
of well development previously thought to emit little if any methane.
Fugitive methane emissions from distribution mains account for 32 percent
of methane emissions from the U.S. natural
gas distribution sector.
The real problem in weighing
fugitive emissions from
gas and oil wells and pipelines is that there is simply no reliable source
of data — at all.
The Environmental Protection Agency issued its latest report on the Methane to Markets program intended to encourage industries to capture «
fugitive» emissions
of the one heat - trapping greenhouse
gas that is a valuable fuel, methane.
I encourage folks to look back at the piece I did on this arena in 2009, in which the formal Environmental Protection Agency estimate
of leaks from
gas and oil operates jumped tenfold (with hints from officials that such «
fugitive» emissions could be a hundredfold higher).
June 1, 2015 Commissioner Workshop, in Support
of the AB 1257 Report, on
Fugitive Methane Emissions in California's Natural
Gas System
Also, if
fugitive methane emissions exceed 3 percent
of total
gas production, natural
gas's climate advantage over coal disappears over a 20 - year time horizon.
The other major uncertainty surrounding the environmental impact
of natural
gas is the effect
of methane leakages, or «
fugitive methane emissions» along the delivery chain.
«[Howarth et al.'s] analysis is seriously flawed in that they significantly overestimate the
fugitive emissions associated with unconventional
gas extraction, undervalue the contribution
of «green technologies» to reducing those emissions to a level approaching that
of conventional
gas, base their comparison between
gas and coal on heat rather than electricity generation (almost the sole use
of coal), and assume a time interval over which to compute the relative climate impact
of gas compared to coal that does not capture the contrast between the long residence time
of CO2 and the short residence time
of methane in the atmosphere.»
The greenhouse
gas inventory it filed with the UN suggests
fugitive emissions from the oil and
gas sector made up a third
of its total footprint in 2014.
The left party also says they'll freeze it, but they'll expand the based
of coverage to include
fugitive natural
gas emissions (a crucial omission in the original tax proposal).
Stronger state and federal laws and regulations are also needed, however, for monitoring, evaluating, and mitigating the
fugitive methane emissions associated with the production and distribution
of natural
gas.
Fugitive emissions: Unintended leaks
of gas from the processing, transmission, and / or transportation
of fossil fuels.
A lot
of this pollution was «
fugitive» emissions — leaks from valves, flanges, tiny holes in pipes, and incomplete combustion
of waste
gasses in the plants» flares.
The campus greenhouse
gas reduction plan outlined in the report centers on four key approaches: reducing the overall energy use on campus, reducing the use
of fossil fuels in campus buildings and vehicles, increasing the use
of renewable energy sources to meet campus needs, and minimizing the release
of «
fugitive»
gases from campus operations such as specialty research
gases in laboratory buildings.
Expanding the carbon tax to include all greenhouse
gas emissions generated in B.C., or capturing these «
fugitive» industrial emissions as part
of a future cap and trade system.
Now they have spotted something else from space: large plumes
of fugitive methane
gas liberated from these formations by unconventional extraction methods like horizontal drilling and hydraulic fracturing.
But SoCal
Gas is under no such obligation, because the Porter Ranch plume is comprised
of «
fugitive emissions», which are «those emissions which are unintentional and could not reasonably pass through a stack, chimney, vent, or other functionally - equivalent opening,» according to the California Air Resources Board (CARB), which oversees the state's cap - and - trade system.
Industrial Processes By - product or
fugitive emissions
of greenhouse
gases from industrial processes.
It's well documented that fracking to produce shale
gas generates
fugitive methane, which is the main component
of natural
gas.
Yes I can say Muller misstated the difference in emissions between coal, oil and
gas, because the other components
of life cycle emissions (such as the
fugitive emissions you referred to) are small compared with emissions from fuel combustion.
A carbon tax could come back to bite natural
gas producers big time if the EPA decides, along the lines
of Cornell University research, that
fugitive methane emissions from hydraulic fracturing make natural
gas as carbon - intensive as coal.
«
Fugitive emissions are on the run in the U.S. — regulators, investors and industry leaders are all out to ensure
gas can demonstrate it has a climate advantage over coal,» said Anthony Hobley, CEO
of Carbon Tracker.
It can deliver better outcomes than coal, but
gas must continue to work on reducing its
fugitive emissions and there is a possibility that if it reaches too large a share
of the energy mix then in the longer run this could still be incompatible with a 2 ⁰ C outcome»
Industry, with the full support
of the administration, continues the fait accompli
of radically expanded natural
gas fracking across the country, with serious unresolved issues about
fugitive atmospheric methane emissions and the potential for contamination
of drinking water aquifers — and with no adequate federal regulatory structure in place.
A University
of Texas study from last year — sponsored by the Environmental Defense Fund and the oil and natural
gas industry — put
fugitive methane emissions at 0.42 percent
of total production.
Most
of our venting and
fugitive emissions are methane, which represent approximately 6 percent
of our direct greenhouse
gas emissions.
Discusses and quantifies energy - related emissions
of all greenhouse
gases resulting from stationary and mobile source activities, including fuel combustion and
fugitive fuel emissions.
Many have voiced concerns that
fugitive methane leakage from natural
gas production diminishes the climate benefit
of switching from coal to natural
gas.
And it is true that over the short term,
fugitive methane emissions have the potential to erode most or all
of the CO2 emissions benefit resulting from switching from coal to
gas.
Bringing that methane to market along with the natural
gas being produced leads to a «strikingly lower» estimate
of so - called
fugitive emissions.
The scientists blamed «
fugitive» methane emissions said to escape during the recovery
of natural
gas.
The analysis also included calculations
of a producer's direct emissions via flaring and venting processes, emissions from entities using their own fuel, and
fugitive emissions
of methane from oil and
gas operations and coal mining.
Present measurement and accounting
of fugitive emissions
of methane from unconventional
gas extraction is inadequate.
The tar sands in Canada are an environmental disaster in other ways, but the incremental emissions
of greenhouse
gases are small compared to the far greater threat
of massive coal expansion in China, or potential
fugitive emission
of methane from fracking, or massive deforestation in Indonesia and Latin America, or any number
of other major sources
of greenhouse
gases.
Fugitive methane emissions occur at every stage
of the natural
gas life cycle; however, the total amount
of leakage is unclear.
The worksheets available below constitute the details each entity's production
of oil & NGLs, natural
gas, coal, and cement from as early as 1854 to 2010, as well as additional sources
of emissions (such as vented CO2, flared CO2, own fuel use, and vented or
fugitive methane), non-energy uses
of oil,
gas, and coal, emission factors for each fuel, calculation
of emissions attributed to each Carbon Major producer, and several summary worksheets by fuel and for cumulative emissions by all entities.
Fugitive methane emissions from natural
gas systems represent a significant source
of global warming pollution in the U.S. Reductions in methane emissions are urgently needed as part
of the broader effort to slow the rate
of global temperature rise.
Recent standards from the Environmental Protection Agency (EPA) will substantially reduce leakage from natural
gas systems, but to help slow the rate
of global warming and improve air quality, further action by states and EPA should directly address
fugitive methane from new and existing wells and equipment.
A new study in the Proceedings
of the National Academy
of Sciences sheds light on a question that continues to vex industry executives and policymakers alike: How significant are
fugitive methane emissions from oil and
gas production?