slug

profile control zone/m

pressure gradient /(MPa∙m⁻¹)

breakthrough pressure of gel/(MPa∙m⁻¹)

optimized formulation

Third slug

3 - 8

0.5

1.5

0.24%a + 0.14%b

Second slug

8 - 20

0.2

0.6

0.22%a + 0.12%b

First slug

20 - 55

0.08

0.25

0.18%a + 0.1%b