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FROZEN HEAT
74
0
0
-0.5
-1
-1.5
-2
-2.5
-3
0
0
5
10
15
20
25
10
20
30
40
Pressure, Megapascals
Temperature (C°)
0
0
Time, days
500
1000
1500
Time, days
Time, days
Time, days
0
10
20
30
40
500
1000
1500
Vertical displacement, metres
Effective principal stress, Megapascals
Production rates, kilograms per second
500
1000
1500
0
500
1000
1500
5
10
15
20
25
CH
4
Water
CH
4+
Water
Temperature
Pressure
σ
1
σ
2
A
B
C
D
Figure 3.6:
This figure shows first order reservoir simulation modeling to assess the response of a gas hydrate reservoir to depressurization-based
production (Moridis et al., 2011). Frame A shows gas and water production rates, frame B shows reservoir pressure and temperature evolution,
frame C shows ground surface settlement and frame D shows changes in the stress regime of the reservoir.