II. ENVIRONMENTAL IMPACTS AND RISKS EVALUATION OF OFFSHORE DRILLING
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Figure 31: Comparison of three offshore exploration drilling scenarios (3 Wells)
0
10
20
30
40
50
60
70
80
90
100
A b io ti c d e p le ti o n
A c id if ic a ti o n
E u tr o p h ic a ti o n
G lo b a l w a rm in g
O zo n e la y e r d e p le ti o n
H u m a n to x ic it y
F re s h w a te r a q u a ti c e c o to x .
M a ri n e a q u a ti c e c o to x .
T e rr e s tr ia l e c o to x ic it y
M a ri n e s e d im e n t e c o to x .
F re s h w a te r s e d im e n t e c o to x .
Io n is in g ra d ia ti o n
P h o to c h e m ic a l o x id a ti o n
Total
impact
%
Well1 offshore
Well2 offshore
Well3 offshore