Casing-while-drilling expert service
Identify and mitigate drilling risks with a comprehensive application analysis.
The XCD casing-while-drilling alloy casing bit is specially designed for drilling vertical or tangential wells to TD in one run. This PDC bit drills on standard casing that is rotated at the surface.
The bit’s sub is composed of durable oilfield-grade steel, and its body is a copper bronze alloy. This unique composition allows it to be drilled out by any standard PDC bit after the XCD casing bit has drilled to TD and the casing has been cemented. After drillout, the drillout PDC bit can continue drilling the next interval, eliminating the need for a dedicated drillout run.
The cutting structure of the XCD casing bit can be fitted with 13-, 16-, or 19-mm PDC cutters, which are available in standard or premium grades.
Comprehensive risk analysis conducted by Allegro XCD-Pro service enables drilling to TD in a single run.
Eliminating a dedicated liner run through a high-loss gassy salt zone reduced rig time by multiple days.
Drillable alloy casing bit achieves effective ROP of 301.8 ft/h in Colombian well.
Advanced bit design enables operator to land 9 ⅝-in casing to TD in 4 days compared with 20 days in previous well.
Drillable alloy casing bit facilitates cost reductions and overall performance increase in existing onshore oil and gas condensate field.