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Is Natural Gas the Answer?

Is Natural Gas the Answer?. What is natural gas?. What is Natural Gas?. Made of a mixture of METHANE (CH4) and other gasses. Conventional Natural gas forms with oil wells or coal beds Natural Gas production has increased by 25% in the last 6 years. Formation of Unconventional Natural Gas.

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Is Natural Gas the Answer?

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  1. Is Natural Gas the Answer?

  2. What is natural gas? What is Natural Gas? • Made of a mixture of METHANE (CH4) and other gasses. • Conventional Natural gas forms with oil wells or coal beds • Natural Gas production has increased by 25% in the last 6 years

  3. Formation of Unconventional Natural Gas • Devonian shales (formed in inland seas during the Devonian Period – 350 million years ago)

  4. Where is natural gas found in large concentrations? • Domestic Supplies Top 5 natural gas reserves: Texas Louisiana Wyoming Oklahoma Pennsylvania

  5. Where is natural gas found in large concentrations? • Global Supplies Top 5 natural gas reserves: Russia Iran Qatar Turkmenistan United States

  6. How do we extract it from the ground? • Conventional Natural Gas Drill down into layers of rock with domes of natural gas Gas flows to surface, normally pressurized to increase gas flow

  7. How do we extract it from the ground? • Non-Conventional Natural Gas – “FRACKING” High pressure liquid is forced into shale layers to crack the rocks Sand is inserted to hold the cracks open Methane flows to the surface

  8. What are the environmental problems with extracting Natural Gas? • Air pollution • Groundwater pollution • Land disruption • Explosions • Fires

  9. What do we use natural gas for besides electricity? 1. Heating 2. Cooking fuel 3. Vehicle Fuel (public busses)

  10. What are the environmental problems with burning natural gas? • Methane leaks are worse than carbon dioxide as a greenhouse gas • Added carbon dioxide • Burned off as waste

  11. GasLand

  12. Natural Gas Advantages • Ample supplies • High Net Energy Yield • Low Cost • Less air pollution than other fossil fuels • Lower carbon dioxide emissions than other fossil fuels • Easily transported by pipeline • Low land use • Good fuel for fuel cells and gas turbines Disadvantages • Non-renewable resource • Releases carbon dioxide when burned • Government subsidies • Environmental costs not included in market prices • Methane (greenhouse gas) can leak from pipelines • Difficult to transfer from one country to another • Can be shipped across ocean only as LNG – highly explosive • Sometimes burned off and wasted at wells because of low price or lack of pipeline

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