Plugging fluid formula

Compressive strength/MPa

Total loss/mL

Base slurry + 4% SWL-1

6

34

Base slurry + 4% KP

3

114

Base slurry + 4% GWS-1

3

130

Base slurry + 5% SWL-1

7

42

Base slurry + 5% KP

4

Press through within 1 min

Base slurry + 5% GWS-1

3

154