Table 3: Results of resolvability test of lost circulation materials.

Lost circulation materials Content (%) Blocking remover Dissolution ratio (%)
Platelike resin (softening point: 140-165°C) 30 Crude oil 98.6
Asphalt (softening point: 140-165°C) 30 Crude oil 99.2
Asphalt (softening point: 190-230°C) 30 Crude oil 96.7
Fiber JDF (15 mm long) 5 10 wt %HCl 51.43
Fiber DL-93 (fine) 5 10 wt %HCl 86.3
Calcium carbonate superfine powder 4 10 wt %HCl 99.6