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CSET Earth Resources Fossil Fuels
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CSET Earth Resources Fossil Fuels
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25 Questions

1. Natural gas that exists in other forms - making it more difficult to extract.

2. A layer of relatively porous and permeable rock in which the oil and gas coming up from the source rock can reside.

3. Refined natural gas that contains pure methane.

4. The ratio of the energy return to the energy invested.

5. Structural traps and stratigraphic traps

6. Source rock under a reservoir bed - under a trap.

7. A type of sedimentary rock that - when heated - releases hydrocarbons.

8. Unrefined oil. May appear thick and brown or black - or clear.

9. Phytoplankton and zooplankton that accumulated in marine sediments beginning 300 million years ago

10. A mixture of of hydrocarbons and organic compounds

11. Fuel for jets and tractors

12. 125000 Btu per gallon

13. Reserves that can reasonably be expected to exist based on geological evidence and projections from proved reserves.

14. Peat - formed from plants.

15. Heat - pressure - dearth of oxygen

16. Salt or cemented sandstone

17. 70%-90% methane - and small proportions of ethane - propane - and butane. Some carbon dioxide. Trace amounts of other gases.

18. A mixture of hydrocarbons found in naturally occurring underground reservoirs

19. Natural gas that flows to the surface from an underground reservoir when a well is dug.

20. Crude oil that contains a mixture of hydrocarbons that are relatively less dense

21. Traps formed by folding or faulting of rock layers

22. Burns coal at lower temperatures - reducing the production of nitrogen oxides - and making it easier to remove sulfur oxides.

23. The layer of sediment where oil and gas originate.

24. Remaining oil is made more fluid so as to bring it up more easily. Brings up another 5-15% of the supply - but is much more costly.

25. An emergency supply of crude oil created by the US government following the oil embargo of 1973-1974. Contains more than 700 million barrels.