What is natural gas and where does it fit in as an energy resource?
Natural gas (NG) refers mainly to methane (the simplest hydrocarbon), but can also include other gases born from the earth including ethane, propane, and butane. NG is just one of many sources of energy, others being coal, oil, nuclear, as well as “green” sources such as wind, solar, hydroelectric, and geothermal. Keep in mind that much of these raw resources are simply means of generating electricity, which is why electricity itself isn’t considered an energy source.
What is fracking and what’s all the hype about?
Fracking is a nickname given to hydraulic fracturing, a process recently developed and now being used to liberate NG from underground shale deposits. The process entails drilling a mile or more beneath the earth’s surface where sand and “proprietary” fluids are injected at high pressures to fracture and crack, or frack, the surrounding shale, allowing NG to then escape back up the drill pipe. Since about 2005, with the use of fracking technologies, companies have been able to tap previously inaccessible NG supplies, thus dramatically increasing supply. Largely due to this increase, domestic NG prices have dropped lower than at any time in recent history, making NG a hot item in the world of energy and politics.
Why isn’t fracking fluid regulated?
Perhaps the most overt and shameless example of political pull relating to U.S. environmental policy is the so-called Halliburton Loophole, a provision passed in 2005 that exempts fracking fluid from regulation under the Safe Drinking Water Act. This odd provision was passed under then Vice President Dick Cheney, who also happens to be the former CEO of Halliburton, one of the largest providers of hydraulic fracturing services to gas companies. A coincidence? I’ll let you decide.
Natural Gas and Fracking
- Burning NG produces considerably less carbon dioxide per unit energy than either coal or oil (about half the emissions compared to coal). This means less of an impact on climate change compared to dirtier sources.
- Increasing NG supplies means lower prices for the consumer.
- Developing domestic energy supplies means greater energy security and perhaps more stable energy prices.
- As the word “proprietary” suggests, the chemical ingredients used in fracking fluid are kept hidden from both the government and general public. If fracking was a closed process, perhaps this wouldn't matter. Instead, fracking fluid often leaks into the surrounding groundwater, affecting community drinking water as well as the ecosystem. You can actually find videos on youtube.com in which people from fracking-afflicted towns set fire to their faucet water to demonstrate its contamination.
- Fugitive emissions, or unintended releases, of methane gas could offset the benefit of reduced carbon dioxide emissions, thereby exacerbating global warming (methane is a far more potent greenhouse gas than carbon dioxide).
- Compared to greener energy sources, methane is still a hydrocarbon and thus its combustion directly translates to the release of greenhouse gases.
- The use of NG means higher exports of dirty coal to other nations, effectively solving our local pollution problems by shipping them overseas; though from a global pollution perspective (i.e. pollutants that spread across the globe), we aren’t solving anything.
- Low NG prices, while out-competing coal prices, are also competing with more sustainable technologies, meaning solar, wind, and other green technologies will be even slower to develop.
Hell, since I’ve written this much I might as well close with my personal thoughts about natural gas and the future of energy. In my opinion, expanding the NG industry is akin to having expanded the oil industry in the past. We’re once again focusing an entire industry and global economy on a resource that will ultimately become exhausted. And when it does, we’ll be forced yet again into a panic, the product of which will be green renewable energy technologies. In the meantime, however, the effects of climate change will have worsened and afflicted generations more of people. This cost to humans and the environment is not justified by the short term profits realized by the select nations/companies that stand to benefit form NG expansion. Finally, relating to the economy, the infrastructure required to fully develop NG resources (including expensive import/export/NG compressions facilities) will require billions upon billions of dollars worth of investments, reshaping domestic economies in certain instances. Who is thinking about the fate of these economies when NG supplies run out? Not the NG companies I can assure you. As a society, we're better off bypassing the ramifications that will inevitably ensue with NG expansion and instead focus our efforts on long term energy solutions, that is, renewable energy.
If you enjoyed this article, please join my blog! Simply click the “join this site” button to the right, log in using your Yahoo, Google, or Twitter account, and click “follow publicly.” Thanks!!
Shahir Masri, MS