Tertiary recovery, or enhanced oil recovery, employs steam or chemicals to displace the remaining oil, ensuring that as much of the resource created by geological processes is recovered efficiently. Unlike material that decomposes on the surface, this organic matter was buried quickly under layers of mud and silt.
Kerogen Cooking Process: How Heat and Pressure Transform Organic Matter Into Crude Oil
When plants and animals died, their bodies sank to the bottom, mixing with sediments. Extraction and Modern Recovery After millions of years of formation, the oil is extracted using modern technology.
This anoxic environment prevented complete decay, allowing a waxy substance called kerogen to form within the buried biomass. Transformation Through Heat and Pressure As newer sediments piled on top, the organic-rich layer was pushed deeper underground.
The Kerogen Cooking Process: How Heat and Pressure Transform Organic Matter Into Crude Oil
Crude oil is less dense than the rock formations surrounding it, so it begins to migrate upward through porous rock layers. This prolonged exposure to heat between 90°C and 160°C "cooks" the kerogen, a process geologists call diagenesis and catagenesis.
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