The conglomerate is working on the project with Statoil ASAthe Norwegian oil and gas producer, as part of its ecomagination program, which also is focusing on gas turbine efficiency, wind blade design and other energy projects. The hydraulic fracturing of rock, or fracking, has allowed the global energy industry to access vast new supplies of oil and gas. Fracking opponents see a range of potential environmental damage from the process but are cautiously optimistic that using CO2 instead of water could reduce those risks. CO2 fracking was used on a small scale in the s by the company Canadian FracMaster before it filed for bankruptcy protection.
Yet new studies say it may be worse for the ozone layer than coal -- a fuel well-known for its harmful emissions. To understand this controversy, we need to first understand how natural gas works.
The Geological Process Natural gas is formed over thousands of years as decaying plants and animals are trapped under layers of rock. Due to extreme pressure and heat, this organic matter begins to slowly break down. Gradually, the energy stored in the organic matter is turned into carbon.
The result is one of three energy sources -- coal, petroleum or natural gas. Natural gas -- historically considered the cleanest of the three -- mainly consists of methane and takes the form of an odorless gas trapped between shale rocks. In the United States, almost 25 percent of our energy usage comes from natural gas.
But, it can also be used in place of petroleum to power vehicles. The two main byproducts of natural gas combustion are carbon dioxide and water vapor, making it an extremely clean fuel when compared to coal and petroleum, which have higher carbon dioxide emissions, in addition to other harmful byproducts.
CO2 in the Atmosphere The burning of fossil fuels -- like coal, oil and natural gas -- releases gases into the air, mainly carbon dioxide, sulfur dioxide, methane and nitrous oxide.
While combustion of natural gas does produce carbon dioxide, it produces about 30 percent less than oil and 45 percent less than coal, and natural gas doesn't produce ash particles like coal and oil do, which adds to air pollution.
Fracking and Methane So if natural gas is less harmful to the ozone than other fossil fuels, why are recent studies saying otherwise? During the fracking process, small amounts of methane are released directly into the atmosphere.
And methane is considered more dangerous to the environment than carbon dioxide because it heats the Earth.
Despite the fact that the methane breaks down relatively quickly so it doesn't remain a heat source for long -- unlike carbon dioxide, which can stay in the atmosphere for hundreds of thousands of years -- it's still thought of the more harmful of the two.
Is natural gas really the clean energy choice? Research that reveals the negative side effects of natural gas hasn't studied a time period long enough to come up with a solid answer that both sides of the argument can agree with.
But studies have, at least, shone a light on the need for more investigation.Natural Gas Q & A. Natural gas is a fossil fuel used as a source of energy for heating, cooking, and electricity generation. Workers inspect a natural gas valve at a fracking site in Natural gas releases far less carbon dioxide when burned than coal.
So fracking reduces carbon emissions, right? Posted on 8 November by gws. Fracking, the process of horizontal drilling into shale layers with slickwater injection, hydraulic fracturing, and subsequent gas (and oil) extraction, has dramatically increased US natural gas production in the last 10+ years.
Fracking Would Emit Large Quantities of Greenhouse Gases at a press conference that fracking releases large amounts of natural gas, more heat in the atmosphere than does carbon dioxide.
promoting natural gas as a “clean, green” This is only one reason for fracking’s heavy carbon footprint. Fracking and water During the fracking process, millions of litres of water, thousands of litres of chemicals and thousands of pounds of sand are injected Factsheet: Fracking and climate change Author: The Council of Canadians.
One of the arguments against fracking, and the natural gas industry in general, is that burning gas releases carbon dioxide, which contributes to global warming. The two main byproducts of natural gas combustion are carbon dioxide and water vapor, making it an extremely clean fuel when compared to coal and petroleum, which have higher carbon dioxide emissions, in addition to other harmful byproducts.