The light, sweet crude that is easy to refine represents a finite resource that is the remnant of a specific period in Earth’s history when conditions were ideal for the preservation of organic matter. The key to finding usable oil is the trap.
Extraction Process Brings Oil to the Surface
It is important to note that the oil extracted today is the result of geological processes that took place over hundreds of millions of years. Simultaneously, the Earth’s internal heat crept upward, baking the organic material trapped in the sedimentary rock.
This process, known as diagenesis and catagenesis, essentially cooked the dead plankton. Because oil is less dense than the surrounding rock and water, it is buoyant and began to migrate upward through porous rock layers.
Extraction Process Brings Oil Surface
When the oil reaches this impermeable cap, often made of rock like shale or salt, it pools, forming a reservoir. Without this biological foundation, the high concentration of carbon and hydrogen necessary for fossil fuels would not exist, making these long-dead organisms the literal building blocks of the industry.
More About Where does oil come from
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More perspective on Where does oil come from can make the topic easier to follow by connecting earlier points with a few simple takeaways.
