Case Studies

Sichuan coring case using a 94 mm double-tube PDC core bit in hard sandstone, conglomerate, siliceous limestone and dolomite.

Guangxi fractured volcanic-rock and basalt case using a 91 mm spiral PDC bit, with recorded penetration of 2 metres per hour.

Guangxi limestone case using a 113 mm spiral PDC bit on a 150-class rig, with recorded penetration of 3 metres in 45 minutes.