Gasoline and Diesel Fuel Update 5/16/2011

U.S. Gasoline and Diesel Fuel Prices, 05/16/11
Gasoline  (Dollars per Gallon)				Diesel Fuel  (Dollars per Gallon)
05/16/11		Change from		05/16/11		Change from
	Price	Week Ago	Year Ago		Price	Week Ago	Year Ago
U.S.	3.960	-0.005	1.096	U.S.	4.061	-0.043	0.967
East Coast	3.952	0.002	1.092	East Coast	4.075	-0.042	0.966
New England	4.045	0.005	1.136	New England	4.207	-0.011	1.065
Central Atlantic	3.993	-0.007	1.103	Central Atlantic	4.210	-0.038	0.978
Lower Atlantic	3.893	0.007	1.070	Lower Atlantic	4.005	-0.047	0.951
Midwest	3.974	-0.008	1.170	Midwest	4.015	-0.051	0.948
Gulf Coast	3.823	0.009	1.061	Gulf Coast	3.996	-0.026	0.954
Rocky Mountain	3.757	0.033	0.861	Rocky Mountain	4.134	-0.022	0.977
West Coast	4.117	-0.032	1.046	West Coast	4.248	-0.059	1.044
California	4.218	-0.036	1.100	California	4.371	-0.088	1.133

The Geology of Natural Gas Resources

The growth of natural gas reserves and production from shale formations has sparked interest in the Nation's natural gas resources. The diagram shows the geologic nature of most major sources of natural gas in the United States in schematic form:

• Gas-rich shale is the source rock for many natural gas resources, but, until now, has not been a focus for production. Horizontal drilling and hydraulic fracturing have made shale gas an economically viable alternative to conventional gas resources.
• Conventional gas accumulations occur when gas migrates from gas-rich shale into an overlying sandstone formation, and then becomes trapped by an overlying impermeable formation, called the seal. Associated gas accumulates in conjunction with oil, while non-associated gas does not accumulate with oil.
• Tight sand gas accumulations occur in a variety of geologic settings where gas migrates from a source rock into a sandstone formation, but is limited in its ability to migrate upward due to reduced permeability in the sandstone.
• Coalbed methane does not migrate from shale, but is generated during the transformation of organic material to coal.

Source http://www.eia.doe.gov/todayinenergy/detail.cfm?id=110

This Week In Petroleum

U.S. Gasoline and Diesel Fuel Prices, 05/09/11
Gasoline  (Dollars per Gallon)				Diesel Fuel  (Dollars per Gallon)
05/09/11		Change from		05/09/11		Change from
	Price	Week Ago	Year Ago		Price	Week Ago	Year Ago
U.S.	3.965	0.002	1.060	U.S.	4.104	-0.020	0.977
East Coast	3.950	0.022	1.055	East Coast	4.117	-0.011	0.981
New England	4.040	0.014	1.109	New England	4.218	-0.013	1.057
Central Atlantic	4.000	0.019	1.082	Central Atlantic	4.248	-0.021	1.002
Lower Atlantic	3.886	0.028	1.020	Lower Atlantic	4.052	-0.007	0.965
Midwest	3.982	-0.028	1.110	Midwest	4.066	-0.020	0.964
Gulf Coast	3.814	0.005	1.026	Gulf Coast	4.022	-0.038	0.935
Rocky Mountain	3.724	0.027	0.815	Rocky Mountain	4.156	0.000	0.987
West Coast	4.149	0.009	1.053	West Coast	4.307	-0.021	1.074
California	4.254	-0.003	1.115	California	4.459	-0.006	1.190