The Barnett Shale is more than 7,000 feet below the surface and is comprised of dense non-permeable rock. According to Dr. Ken Morgan, a geologist at Texas Christian University, “Solid hard rocks that are 7000 feet down don’t subside. You have more than a mile of solid rock that holds it all up. Subsidence occurs when you have loose, soft materials like in Houston (sands, clays, etc.) but not in cemented hard rocks like the Barnett Shale.”
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Support for Natural Gas Vehicles Strengthens in Texas
The idea of using compressed natural gas (CNG) in cars and trucks has been receiving more and more attention lately, partially because of attractive new technology and capabilities. In actuality, there are plenty of compelling reasons to use natural gas as a transportation fuel – including the rising cost of petroleum.
The development of the Barnett Shale resulted in technological advances that spurred the development of shales all over the United States. As a result, the United States has between 100 and 200 years of supply at current rates of consumption. So the possibility of being able to replace gasoline with natural gas and reduce our imports of crude oil is compelling.
President Barack Obama recently announced a Presidential Memorandum outlining federal fleet performance. The memorandum opens with this:
“The Federal Government operates the largest fleet of light-duty vehicles in America. We owe a responsibility to American citizens to lead by example and contribute to meeting our national goals of reducing oil imports by one-third by 2025 and putting one million advanced vehicles on the road by 2015. Living up to that responsibility means that the federal fleet will operate only as many vehicles as are needed and will focus on reducing petroleum consumption.”
The president also mentioned these specific requirements:
“By December 31, 2015, all new light-duty vehicles leased or purchased by agencies must be alternative-fueled vehicles, such as hybrid or electric, compressed natural gas, or biofuel. Moreover, agency alternative fueled vehicles must, as soon as practicable, be located in proximity to fueling stations with available alternative fuels, and be operated on the alternative fuel for which the vehicle is designed.” The entire text of the memo is available online.
While the idea of CNG vehicles is great for federal, state and private fleets, the use of more CNG vehicles is hampered by the “chicken and egg” problem. People are hesitant to purchase CNG vehicles because there are very few fueling stations. Service stations are hesitant to add natural gas because there are not very many CNG vehicles on the road.
Enter the State of Texas. The Texas Senate recently passed SB20 to encourage the use of natural gas vehicles and provide financial incentives to build natural gas fueling stations. Specifically, the bill redirects funds from the existing Texas Emissions Reduction Program toward vehicles that use natural gas. The fund replaces or retrofits heavy-duty construction equipment and other vehicles to reduce pollution. The Texas legislation targets the Texas triangle as the prime place to encourage the construction of natural gas fueling stations.
“This legislation will foster the development of a Texas Clean Transportation Triangle by increasing the number of natural gas-refueling stations and replacing the heaviest fuel-hungry diesel trucks with natural gas-powered trucks, thus improving Texas’s air quality and economy,” said Jim Hackett, CEO of Anadarko Petroleum and chairman of America’s Natural Gas Alliance.
With the vast quantities of natural gas that can now be extracted from shale deposits in the U.S., using more natural gas in vehicles benefits us in more ways than one. Having more CNG vehicles on the road will help clean up the air and reduce our dependence on foreign oil.



