How Oil is Formed
Storyboard Text
- Sedimentary Rock
- Plant and Animal Remains
- Sedimentary Rock
- Trapped Fossils
- Millions of years ago, tiny marine animals and plants died and were buried on the ocean floor. Over time, they were covered by layers of silt and sand.
- Impermeable Rock
- Over millions of years, the remains were buried deeper and deeper and were compressed due to heat and pressure.
- The fossils become trapped under many layers of rock.
- The enormous heat and pressure turned the remains into oil and gas. The oil rises through the permeable rock but forms reservoirs when it hits impermeable rock.
- Today, we drill down through layers of sand, silt and rock to reach the rock formations that contain natural gas and oil deposits.
- Crude oil is perhaps the most widely used fossil fuel and is used for energy carriers and to be combined into gasoline, jet fuel, diesel, and heating oils.
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