Table 1. Gas hydrate recovery rates in offshore continental slope regions (>500 meters water depth) collected from SGE piston coring programs.

 
# of Cores
Hydrate Cores
Percent
 

Northern Gulf of Mexicoa

Central/Eastern Gulf (1997-1999)

425
28
6.6

Western Gulf of Mexico (1997-1999)

361
8
2.2

Total Northern Gulf

786
36
4.6
 

West Africa

1994 Nigerian Deep Waterb

310
6
1.9

1996 Nigerian Deep & Ultra Deep

186
6
3.2
1998 Nigerian Deep & Ultra Deep
330
9
2.7

Total Nigeria

826
21
2.5
       

Gabon (1994-1998)

307
0
0.0

Congo (1997-1998)

16
0
0.0

Angolan (1994-1998)

1,330
0
0.0
Namibia (1994)
90
0
0.0

Total Non-Nigeria

1,743
0
0.0
 

Northern Californiac

     
Eel River
74
7
9.5

Point Arena

90
0
0.0

a These Gulf of Mexico core numbers only represent those cores obtained by the author since 1996 and do not include several thousand additional SGE cores obtained prior to 1996.

b After Brooks et al. (5)

c After Brooks et al. (6)

2001 TDI-Brooks International, Inc.
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