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2. What are the two classifications of hydrocarbon traps?
3. In what kind of rocks is petroleum found?
4. What does porosity and permeability mean?
5. Which type of rock is likely to be more permeable, a
sandstone which is formed from sandy sediment or a shale
which is formed from muddy sediment?
6. With how many organic compounds crude oil consist of?
7. Which type of rock can includes oil?
8. From which types of wells natural gas comes?
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