Geography
Former Soviet republics
25 results
Europe
22 results
United States
20 results
Middle East
15 results
Mexico, Gulf of
14 results
Texas
13 results
Russia (Federation)
12 results
Canada
10 results
Mexico
10 results
China
8 results
Denver Basin
7 results
Africa
6 results
Australia
6 results
Latin America
6 results
Alberta
5 results
Bakken Formation
5 results
Gulf Coast
5 results
North Sea
5 results
Saskatchewan
5 results
Soviet Union
5 results
Caspian Sea Region
4 results
Europe, Eastern
4 results
Gulf Coast (U.S.)
4 results
Houston Ship Channel (Tex.)
4 results
Iran
4 results
North America
4 results
Northwestern States
4 results
Prairie Provinces
4 results
Asia
3 results
Asia, Central
3 results
Egypt
3 results
Great Britain
3 results
Harris County
3 results
Harris County (Tex.)
3 results
Pacific Area
3 results
West Virginia
3 results
British Columbia
2 results
Brunei
2 results
Caribbean Area
2 results
Caspian Sea
2 results
Congo (Democratic Republic)
2 results
East Asia
2 results
France
2 results
Germany (West)
2 results
Gulf of Mexico
2 results
Houston Ship Channel
2 results
India
2 results
Ireland
2 results
Kansas
2 results
Korea (North)
2 results
more…