Changes

Wyoming typically accounts for 3% of annual U.S. oil production. The State is a transportation crossroads for Canadian crude oil imports and local Rocky Mountain production flowing to U.S. Midwest and Mountain markets. The State has five oil refineries, which lie in the southern and eastern parts of the State. Wyoming’s total petroleum consumption is low, and refineries deliver much of their product to markets in neighboring States. Wyoming is one of the few States in the Nation that allow the statewide use of conventional motor gasoline. (Most States require the use of specific gasoline blends in non-attainment areas due to air-quality considerations.)  

Wyoming typically accounts for 3% of annual U.S. oil production. The State is a transportation crossroads for Canadian crude oil imports and local Rocky Mountain production flowing to U.S. Midwest and Mountain markets. The State has five oil refineries, which lie in the southern and eastern parts of the State. Wyoming’s total petroleum consumption is low, and refineries deliver much of their product to markets in neighboring States. Wyoming is one of the few States in the Nation that allow the statewide use of conventional motor gasoline. (Most States require the use of specific gasoline blends in non-attainment areas due to air-quality considerations.)  

Although its proven crude oil reserves account for only about 3% of the U.S. total, Wyoming has enormous deposits of oil shale rock, known as marlstone, which can be converted into crude oil through destructive distillation. The Green River Formation, a group of basins in Colorado, Wyoming, and Utah, contains the largest known oil shale deposits in the world. Wyoming’s oil shale deposits, concentrated in the Green River and Washakie Basins in the southwestern part of the State, contain an estimated 300 billion barrels of oil, equal to about one-fourth of the world’s proven oil reserves. Although this natural resource holds tremendous promise, oil shale development remains speculative and faces several major obstacles involving technological feasibility, economic viability, resource ownership, and environmental considerations. Wyoming’s oil shale deposits are less favorable for commercial extraction than those in Utah and Colorado because they are generally situated in thinner, less continuous layers.  

Although its proven crude oil reserves account for only about 3% of the U.S. total, Wyoming has enormous deposits of oil shale rock, known as marlstone, which can be converted into crude oil through destructive distillation. The Green River Formation, a group of basins in Colorado, Wyoming, and Utah, contains the largest known oil shale deposits in the world. Wyoming’s oil shale deposits, concentrated in the Green River and Washakie Basins in the southwestern part of the State, contain an estimated 300 billion barrels of oil, equal to about one-fourth of the world’s proven oil reserves. Although this natural resource holds tremendous promise, oil shale development remains speculative and faces several major obstacles involving technological feasibility, economic viability, resource ownership, and environmental considerations. Wyoming’s oil shale deposits are less favorable for commercial extraction than those in [[Utah]] and [[Colorado]] because they are generally situated in thinner, less continuous layers.  

===Natural Gas===

===Natural Gas===