Sentences with phrase «emissions from drilling»

«Some inventories leave emissions from drilling out entirely because it is assumed to be negligible,» study co-author Dana Caulton, a Purdue Ph.D. candidate, said Tuesday.

Another coalition of environmental groups has sued the U.S. Bureau of Land Management to reverse a two - year delay of another methane rule, this one governing emissions from drilling on federal and Indian lands.

In a draft of the health impact assessment released in February 2011, the School of Public Health researchers concluded that without pollution control measures, emissions from drilling would likely be high enough to cause disease in Battlement Mesa, including respiratory and neurological problems, birth defects and cancer.

Not exact matches

Exxon Mobil announced last month it would expand its efforts to capture emissions from its subsidary, XTO Energy, which focuses on U.S. shale drilling.

«Greenhouse gas emissions are going to go through the roof with a project of this kind,» said Wilderness Committee National Campaign Director Joe Foy «From escaped methane at the drill sites to the massive carbon emissions required to cool the gas, to more escaped methane on the long trip across the ocean to Asia and then the emissions from burning the From escaped methane at the drill sites to the massive carbon emissions required to cool the gas, to more escaped methane on the long trip across the ocean to Asia and then the emissions from burning the from burning the gas.

«The methane emissions from the gas wells... are surprisingly high considering that all of these wells were still being drilled, had not yet been hydraulically fractured, and were not yet in production,» the paper reports.

This finding lends additional credence to the idea that a small subset of wells, drilling processes and equipment is probably responsible for a large percentage of the emissions from gas drilling.

Environmental controls designed to prevent leaks of methane from newly drilled natural gas wells are effective, a study has found — but emissions from existing wells in production are much higher than previously believed.

While this study did catalogue the different chemicals found in air emissions from gas drilling operations, it did not address exposure levels and their potential effects.

In Zatko's case, she says the support did produce a finding that could benefit society at large: She concluded that chemical reactions in snow were making only a minimal contribution to the region's ozone pollution, compared with emissions coming from natural gas drilling.

But the new Purdue study suggests the EPA's inventories may not be quantifying all the methane emissions from wells being drilled because few people have measured methane leaking from wells in the earliest stage of well development — the actual drilling itself.

The EPA estimated in 2011 that natural gas drilling accounts for about 1,200 gigagrams, or 2.6 billion pounds, of methane emissions each year from well completions, equipment leaks and pneumatic controllers.

Heat trapping greenhouse - gas emissions are the obvious culprit, since they've increased dramatically over that same 50 years, but scientists prefer hard evidence to presumption, so a team from the British Antarctic Survey has been drilling into ancient ice to see how the current warming stacks up against what happened in the ancient past.

However, the stark reality is that global emissions have accelerated (Fig. 1) and new efforts are underway to massively expand fossil fuel extraction [7]--[9] by drilling to increasing ocean depths and into the Arctic, squeezing oil from tar sands and tar shale, hydro - fracking to expand extraction of natural gas, developing exploitation of methane hydrates, and mining of coal via mountaintop removal and mechanized long - wall mining.

To determine emissions rates at natural gas fields in Pennsylvania's Marcellus shale gas fields, the researchers used emissions data gathered from an airplane that flew over natural gas wells in southwest Pennsylvania in June 2012, some of which were in the process of being drilled.

The study shows that during drilling, as much as 34 grams of methane per second were spewing into the air from seven natural gas well pads in southwest Pennsylvania — up to 1,000 times the EPA estimate for methane emissions during drilling, Purdue atmospheric chemistry professor and study lead author Paul Shepson said in a statement.

«This indicates that there are processes occurring — e.g. emissions from coal seams during the drilling process — that are not captured in the inventory development process,» he said.

Emissions from shale drilling, gas processing, gas escapes, and diesel exhaust can all negatively impact air quality.

Klein follows the «dark» money behind the propaganda of climate - change denial, the effort to dismantle the federal government to curtail corporate regulation, and the justification for the feverish pursuit of the riskiest forms of carbon - emission - producing energy from tar sands extraction to deep - water drilling, fracking, and mountaintop - removal coal mining.

The bill aims to thread various needles, for instance including measures to encourage a shift from coal and oil to natural gas (which produces roughly half the emissions per unit of energy) but in ways that won't alarm environmentalists worried about impacts of expanded gas drilling.

That's why a great deal of attention was paid last week to the results of a two - day aerial survey over gas fields in southwestern Pennsylvania that calculated emission rates of methane (the main component of natural gas) from two well pads still in the drilling phase.

And there are virtually no CO2 emissions from the savings, but increasingly more from the extra exploration and drilling for hard to get oil, as well as for cooking corn with oil, gas, and coal to get corn ethanol.

The problem, as is noted in Howarth's paper, is the huge amount of guesswork behind estimates of gas emissions from this (or any other) form of natural gas drilling and the subjectivity of interpretations of the greenhouse influence of such emissions (which are nearly all methane, a potent but short - lived heat - trapping gas).

Most studies have shown that more than half of the methane leakage from natural gas comes from drilling sites and gas processing plants (i.e. upstream emissions), with the remainder coming from pipelines and storage systems (i.e. downstream emission).

Shakhova, Semiletov and collaborators from 12 institutions in five countries plan to continue their studies in the region, tracking the source of the methane emissions and drilling into the seafloor in an effort to estimate how much methane is stored there.

The reality is stark: fracking is believed to cause earthquakes, groundwater contamination, adds to greenhouse gas pollution through releases of methane, releases uranium and radon radiation, and leads to serious air pollution from the emissions spewing from drilling and transportation equipment.

Using an airplane to detect greenhouse gas emissions from freshly drilled shale gas wells in Pennsylvania's Marcellus basin, Cornell and Purdue scientists have found that leaked methane is a tougher problem — between a hundred - and a thousandfold — than previously thought, according to a study published April 14 in the Proceedings of the National Academy of Sciences.

Methane emissions that occur during drilling and from pipeline leaks also add to the so - called green house gas effect.

That's equal to the emissions from 670,000 vehicles or the annual electricity use of 440,000 homes, not to mention the reduced need to mine coal or drill oil.

«The BLM's environmental analysis for the March lease sale completely fails to quantify of the very real, direct greenhouse gas emissions that will result from allowing these areas to be drilled and fracked and both analyses fail to quantify cumulative impacts from greenhouse gases.

One released in 2013 found that methane emissions from natural gas drilling were a fraction of previous estimates.

A report in the Colorado Independent states: «The increase in ozone violations is primarily due to emissions from oil and gas drilling.»

It focuses on the potential carbon emissions from developed reserves — where the wells are already drilled, the pits dug, and the pipelines, processing facilities, railways, and export terminals constructed.

From their fishing boat, the researchers drilled into the bed of the Laptev Sea — a hotspot of methane emissions — and used sonar to analyse gas bubbles in the water.

EPA says emissions from field production of natural gas accounted for 32.2 percent of methane emissions from natural gas systems in 2012, but adds that those have come down more than 25 percent since 1990 — which is noteworthy when you factor in that natural gas production ramped up with the introduction of advanced fracking and horizontal drilling in the mid-2000s.

Halting crude oil exports would reduce drilling and fracking and could prevent up to 500 million tons of greenhouse emissions — the pollution equivalent of more than 135 coal - fired power plants, according to a report from the Center for American Progress.

Canada continued its rehabilitation from climate villain to climate champion, inking a comprehensive bilateral agreement with the U.S. to crackdown on methane emissions and put another stake through the heart of Arctic drilling plans.

He said that there were significant GHG emissions from the well - drilling, water - trucking, pipeline - laying, and associated forest - felling.