BGR's Latest Estimates of Global Fossil Fuel Resources and Reserves, as of January 1, 2013

The BGR, a Hannover-based German government institute, is renowned for their annual reports of global non-renewable energy resources (fossil fuels and nuclear energy sources). (BGR = Bundesanstalt für Geowissenschaften und Rohstoffe; or Federal Institute for Geosciences and Natural Resources)
When I wrote about the fossil fuel resources/reserves last year, the BGR's report was using old information for non-conventional natural gas and oil resources. So I used the US EIA's latest estimates for natural gas and crude oil. I quoted the BGR's data only for coal resources at that time.
Now that this year's BGR report updated the natural gas and oil numbers utilizing the US EIA's new data, I am introducing here the BGR's estimates for the reserves and resources of all fossil fuels. (The US EIA's coal numbers are too old, now.)
I prepared two tables below. The first table is summarized according to unique units of each fossil fuel. The second table is according to the same thermal equivalents. In a nutshell, at the beginning of 2013, the world had approximately 73 years' supply of fossil fuels that could be exploitable with contemporary technologies.

(According to the BGR's glossaries,
Reserves = Proven volumes of energy commodities economically exploitable at today’s prices and using today’s technology;
Resources =  Proven amounts of energy resources which cannot currently be exploited for technical and/or economic reasons, as well as unproven but geologically possible energy resources which may be exploitable in future)

Table 1. Reserves & Resources in Fuel-specific Units (as of January 1, 2013)

Fuel	Unit	Reserves	2012 Production	R/P (years)	Resources	Remaining Potential
Coal Total	Gtce	762			16,195	16,957
Hard Coal	Gtce	650	6.835	95	14,506	15,156
Lignite	Gtce	111	1.106	100	1,689	1,800
Oil Total	Gtoe	217	4.137	52	429	646
	billion bbl	1,592	30		3,154	4,745
Conventional Crude Oil	Gt	169			161	330
Non-Conventional Oil Total	Gtoe	48			268	316
Oil Sand	Gt	27			63	89
Extra Heavy Oil	Gt	21			61	82
Shale Oil	Gt	–			47	47
Oil Shale	Gt	–			97	97
Gas Total	Tcm	196	3.389	58	837	1,033
	Tcf	6,928	120		29,558	36,486
Conventional Natural Gas	Tcm	191			310	501
Non-Conventional Gas Total	Tcm	5.5			527	533
Shale Gas	Tcm	3.7			205	209
Tight Gas	Tcm	–			63	63
Coal Bed Methane	Tcm	1.8			50	52
Aquifer Gas	Tcm	–			24	24
Gas Hydrates	Tcm	–			184	184
Fossil Fuels Total	EJ	38,826	534.4	73	524,378	563,204
	Gtoe	928	12.8		12,533	13,461

Table 2. Reserves & Resources in EJ/Gtoe (as of January 1, 2013)

Fuel	Unit	Reserves	2012 Production	R/P (years)	Resources	Remaining Potential
Coal Total	EJ	22,320	232.7	96	474,655	496,975
	Gtoe	533	5.6		11,344	11,878
Hard Coal	EJ	19,061	200.3	95	425,155	444,216
Lignite	EJ	3,259	32.4	101	49,500	52,759
Oil Total	EJ	9,052	172.9	52	17,923	26,975
	Gtoe	216	4.1		428	645
Conventional Crude Oil	EJ	7,050			6,732	13,782
Non-Conventional Oil Total	EJ	2,002			11,191	13,193
Oil Sand	EJ	1,115			2,613	3,728
Extra Heavy Oil	EJ	886			2,541	3,427
Shale Oil	EJ	–			1,969	1,969
Oil Shale	EJ	–			4,068	4,068
Gas Total	EJ	7,455	128.8	58	31,800	39,255
	Gtoe	178	3.1		760	938
Conventional Natural Gas	EJ	7,244			11,779	19,023
Non-Conventional Gas Total	EJ	211			20,021	20,232
Shale Gas	EJ	142			7,804	7,946
Tight Gas	EJ	–			2,397	2,397
Coal Bed Methane	EJ	69			1,916	1,985
Aquifer Gas	EJ	–			912	912
Gas Hydrates	EJ	–			6,992	6,992
Fossil Fuels Total	EJ	38,826	534.4	73	524,378	563,204
	Gtoe	928	12.8		12,533	13,461

Notes:
hard coal = bituminous coal + anthracite

R/P  = Reserves-to-production ratio
Gtce = billion tonnes of coal equivalent (= 1000 million tonnes of coal equivalent (Mtce))

Gtoe = billion tonnes of oil equivalent (= 1000 million tonnes of oil equivalent (Mtoe))

bbl  = barrels (1 toe = 7.35 bbl)
Tcm  = trillion cubic meters (1 Tcm = 35.315 Tcf)

Tcf  = trillion cubic feet 

EJ   = exajoules, or quintillion joules (10¹⁸ J)

Conversion factors:
1 EJ  = 23.9 Mtoe
1 toe = 1.428 tce = 1101 m³ (cubic meters) of natural gas

Source:
BGR. (2013). Energy Study 2013: Reserves, Resources and Availability of Energy Resources. Hannover, Germany: Bundesanstalt für Geowissenschaften und Rohstoffe. [Full-text at http://j.mp/BGR_2013]