11. Kerogen Type III is formed from terrestrial plant matter that is lacking in lipids or waxy matter.12. The characteristics of the basement sediments can produce conditions conducive to the conversion of kerogen into petroleum. 13. Pyrobitumen represents a significant fraction of the ultimate fate of petroleum liquids formed from kerogen during catagenesis. 14. In 1912, he introduced the name of kerogen to cover the insoluble organic matter in oil shale. 15. This process converts kerogen in oil shale into shale oil by pyrolysis, hydrogenation, or thermal dissolution. 16. The kerogen in the rock can be converted into crude oil using heat and pressure to simulate natural processes. 17. These processes convert the organic matter within the rock ( kerogen ) into impurities such as sulfur and nitrogen. 18. Many of the coal fields date to the Carboniferous period of type III kerogen , a source of natural gas. 19. The formation of polymers in this way accounts for the large molecular weights and diverse chemical compositions associated with kerogen . 20. In summary, D content of kerogen and coals are complicated and hard to resolve due to the complex chemistry.
