Run under-gauge and below a hole opener, the Z-Bit rolls and cuts its way through the wellbore in a way that makes it easier for the hole opener to bring the pilot hole out to proper spec. By flushing through the center of the cone, and utilizing a special nozzle in the shank above the cutter, the Z-Bit’s teeth are kept free of debris for continuous cutting.
The Stabil Drill Z-Bit improves pilot hole guidance, cleans debris with advanced flushing action, and helps push past ledges and obstacles that can stop conventional BHAs short of target depth.
For...
Z-Bit Cone Size (IN) | 5.75 | 8.5 | 12.25 |
Hole Opener Above (IN) | 6-8.75 | 9.5-13.5 | 14.5-26 |
Minimum Pilot Hold (IN) | 6 | 8.5 | 12.25 |
Top Pin Connection | 3.5 REG | 4.5 REG | 6.625 |
Quantity of Available Nozzles | 2 | 2 | 2 |
Max Temp (F) | 250 deg. F | 250 deg. F | 250 deg. F |
Running a Z-bit before other BHA components such as hole openers, reamers and other tools can improve the efficiency of wellbore development—and hole quality overall. This smart addition guides the tool string in an optimized way, turning pilot holes into perfect holes while avoiding complications.
The Stabil Drill Z-bit’s special rolling offset design works its way into the pilot hole even in the face of challenging downhole environments. Run undergauge and let the A-bit make quick work of ledges and washouts, finding its way into the pilot hole while allowing the hole opener to cut and ream the hole back to full-gauge down to the well’s target depth.
Struggling to reach target depth (TD)? The Stabil Drill Z-bit is often deployed as a way to help get past difficulty with bull-nose hole openers or just navigating your drilling assembly around tricky geology and on to TD in general.
See how customers have unlocked success and maximized ROI with our tools.