Distribution and Thermal Maturity of Devonian Carbonate Reservoir Solid Bitumen in Desheng Area of Guizhong Depression, South China

Table 1

Results of equivalent vitrinite reflectance by bitumen reflectance.

Sample number	Formation	Lithology of reservoir	Bitumen reflectance (%)	Equivalent vitrinite reflectance (%)
				Jacob, 1989	Feng and Chen, 1988		Liu and Shi, 1994
					Pyrolysis	Natural
DS1-5-1	D2d^1	Muddy Limestone	5.35	3.70	3.95	3.85	4.03
DS1-5-4	D2d^1		5.44	3.76	4.01	3.91	4.09