Geological Traps and Reservoir Formation Crude oil does not remain in the source rock but migrates through porous and permeable rocks until it is trapped by non-porous rock layers called cap rocks. As more sediment accumulated, the organic matter was compressed and began to change chemically.
From Organic Matter to Energy: The Formation of Crude Oil
This continuous burial process isolated the organic material from oxygen, preventing complete decomposition. Further Conversion to Crude Oil With increased depth and temperature, kerogen underwent thermal cracking, transforming into liquid hydrocarbons.
Extraction and Modern Recovery Once trapped, crude oil is extracted using drilling techniques. The hydrocarbons migrated through porous rock formations, eventually accumulating in reservoir rocks where they formed oil pools.
From Organic Matter to Energy: The Formation of Crude Oil
These geological structures, such as anticlines, fault traps, and salt domes, act as reservoirs that hold the oil in place until extraction. The Biological Origins: Ancient Plankton and Algae The story of crude oil begins in ancient oceans, lakes, and seas where microscopic organisms such as algae and plankton thrived.
More About How crude oil was made
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