1. The Hydrocarbon Cycle Thuan Chau and Alex Turner Natural Gases, Gas Hydrates and Crude Oil

2. The Cycle Source: Elements of Petroleum Geology

3. Reservoirs and Amounts 1 Trillion - Number of barrels of oil produced since the start of the industry. 1.4 Trillion - Estimated number of barrels currently considered technically and economically accessible—out of 5 Trillion total barrels of petroleum resources in the ground. Source: The Quest

4. Flux – Out (kg/yr) Anthropogenic = 3.91 x 10 12 oilNatural = 6.00 x 10 8 oil Farwell 2009

5. Residence Time *1 barrel = 138.8 kg Amount in reservoir = 5 trillion barrel* = 6.94 x10 14 kg Natural seep = 6.00 x10 8 kg/year Anthropogenic = 3.91 x10 12 kg/year Reservoir 6.94 x10 14 kg 6.00 x10 8 kg/yr 3.91 x10 12 kg/yr 1.05 x10 14 kg/yr