-------- Quarter ended --------
December 1991 September 1991
Land Marine Land Marine
U.S 66 19 4 14
Canada 32 0 19 3
Mexico 23 0 22 4
Cent. & S. America 50 3 56 4
Europe 32 36 40 47
Middle East 41 2 37 1
Africa 35 12 43 10
Far East 43 16 44 16
C.I.S 2 0 - -
Total 324 88 345 99
Source: Society of Exploration Geophysicists
Copyright 1992 Oil & Gas Journal. All Rights Reserved.
