experiment

failure pressure for a 30 m plugged section

failure gradient (bar/m)

failure gradient (psi/ft)

(bar)

(psi)

97.2 mm ID pipe, 5A PVP

3.2

14.1

96

1389

97.2 mm ID pipe, 5D PVP

5.9

25.9

176

2549

139.8 mm ID pipe, 5D PVP, min flow

6.8

29.9

811

2959

173.1 mm ID pipe, 5D PVP

0.7

3.1

21

306

sandstone cylinder, 5D PVP

21.1

93.3

633

9180