Well group

Oil well with tracer visible

Trace dose (mg/L)

Frontal velocity (m/d)

W7

X8

1.16

12.3

X1

0.98

10.3

X13

0.98

6.7

X2

0.87

5.0

X27

0.79

5.3

X26

0.82

3.5

W9

X8

3.21

14.2

X2

2.76

6.9

X3

3.98

8.6

X4

4.47

9.7

X10

1.64

3.3

X15

2.48

3.6