Conventional				Unconventional
Gas	Condensate	Oil	Heavy Oil	Shale Gas	Shale Oil	Bitumen

	Light crude	Medium oil	Heavy crude	Extra heavy crude
kg/m³	< 870	870 - 920	920 - 1000	> 1000
°API	> 31.1	22.3 - 31.1	10 - 22.3	< 10

Matrix

Fissured

Fractured

Faulted

Compartmentalized

Anticline	Stratigraphic	Normal Fault	Thrust Fault

See Also

Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology

[ Russian Reserves Categories [in russian] ]

References

[1] Dr. Jon Olson, Dr. Mukul Sharma, Dr. Zoya Heidari, Shale Fracturing: The Geology And Technology That Sustained The Boom