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MAXDRILL Overburden Drilling Tools
It is recommended to drill in rock formation where contains some ovals and fractures.
Design Principles:
The stable and reliable working performance and the less vibration of drill rig.
Different Structures:
Concentric system with ring bits, wing and blocks.
nnecttype="rect" o:extrusionok="f"> Operation Procedure
1. At the start of drilling, the blocks slides down through the grooves on pilot bit, and the ream drives the casing shoes and tubes into the drill hole.
2. After complete the drilling process in overburden rock formations, raise the drilling tools then the blocks will get closed through the grooves, the drilling tools can be pulled out from the drill hole.
3. Next construction can be followed.
MAXDRILL Overburden Concentric Casing Systems with blocks
