Input Data

This chapter contains the scenario definitions and input data used for blowout and well kill simulations for hypothetical blowouts from one of the wells on the Alpha or Beta fields.

Reservoir fluid

A Pressure Volume Temperature (PVT) characterisation was made using the PVTsim fluid characterisation software from CALSEP, based on the reservoir composition and fluid properties given in the following tables.

Table -3: Reservoir fluid compositions used in simulations

Fluid composition

 

Alpha A

Alpha 6u/m

Beta A/B

Beta H2

Component

 

Mole %

Mole %

Mole %

Mole %

nitrogen

N2

0.28

0.19

0.20

0.14

carbon dioxide

CO2

1.45

1.75

1.52

3.00

methane

CH4

82.22

86.78

85.27

88.47

ethane

C2H6

7.06

6.43

6.87

5.59

propane

C3H8

3.54

2.26

2.66

1.34

iso-butane

iC4H10

0.55

0.38

0.41

0.29

n-butane

nC4H10

1.18

0.54

0.67

0.29

iso-pentane

iC5H12

0.40

0.21

0.23

0.14

n-pentane

iC5H12

0.40

0.15

0.21

0.09

hexanes

C6

0.80

0.45

0.54

0.15

heptanes plus

C7+

2.11

0.86

1.42

0.50

molecular weight

C7+

134.9

130.8

136.0

127.8