One of the places on earth where petroleum forms is at subduction zones. These are found along the coast where the Ocean Plate is being sub ducted underneath the Continental Plate.  In these zones are found some of the largest petroleum deposits that are known.  This is part of the carbon cycle of the earth.

The upper portion of the oceanic crust is made up of sedimentary deposits that contain trillions of diatom bodies as they are moved across the ocean floor in a conveyor belt manner they eventually approach the subduction zone. As they are slowly sub ducted into the earths crust the petroleum begins to cook out of these diatom bodies and forms deep petroleum deposits.

These deep deposits of petroleum slowly work their way up through the sedimentary rock from where they were formed called the source rock. When they finally arrive in low density sedimentary rock they are in what are called oil sands or oil shale that is the lower density rock that the oil is pumped out of.

Our CTO/PEF process mimicks natures method for producing petroleum but shortens the time to only minutes. Also since we do not use tremendously high pressures such as found in the earth we make very light petroleum with an API gravity of around 40-50.