Geography
United States
780 results
Texas
258 results
Alaska
176 results
California
154 results
Wyoming
86 results
Illinois
79 results
New Mexico
62 results
Oklahoma
54 results
Canada
53 results
Pennsylvania
53 results
Colorado
46 results
Mexico
46 results
Kansas
43 results
Louisiana
43 results
Middle East
43 results
Alabama
32 results
Mexico, Gulf of
32 results
Russia (Federation)
32 results
China
31 results
West (U.S.)
31 results
Europe
30 results
Iran
30 results
Kentucky
28 results
Utah
28 results
North Sea
27 results
National Petroleum Reserve
26 results
Iraq
25 results
National Petroleum Reserve (Alaska)
25 results
Soviet Union
25 results
Australia
23 results
Montana
23 results
Great Britain
22 results
South Dakota
22 results
North Slope
21 results
Ohio
21 results
Venezuela
21 results
Arctic National Wildlife Refuge
19 results
Asia
19 results
Gulf States
18 results
North America
18 results
Appalachian Basin
17 results
Africa
16 results
Arkansas
16 results
United States, West
16 results
Washington (State)
16 results
Indonesia
14 results
Mississippi
14 results
Permian Basin (Tex. and N.M.)
14 results
Southeast Asia
14 results
Gulf Coast (U.S.)
13 results
more…