Hughes Christensen Drill Bit Catalog

SEM Bearing Package
UltraMax utilizes a patented single energizer metal sealing system (SEM)
which is far simpler, yet more robust than earlier technology. Fewer sealing
components and tighter tolerances ensure fewer avenues for leakage and
greater reliability in the tough applications. Additional bearing refinements like
a silver plated insert and new bearing geometry add up to a tougher bearing
ready to provide long hours under the most strenuous operating conditions.
Excluder Package
The Excluder Package is comprised of new technology targeted specifically
at preventing the detrimental effects of mud packing. The cornerstone of the
package is an elastomer backup ring. Strategically positioned to occupy a
space where particles once invaded, the ring acts as a static seal between
the mud and seal package. Also working against the effects of mud packing
is the Mud Wiper and Cone Backface Groove which work in tandem to wipe
away packed-in mud.
Equalizer Lubrication Package
A new modified grease formulation provides lower torque, less heat and reduced
wear in the sealing area. Also included in the Equalizer Package is an improved
compensation system. The compensator is made with HSN elastomer material for
improved heat and chemical resistance. Its spring energized compensator cap reduces
vibration and fretting.
Clean Sweep Hydraulics
All UltraMax bits utilize the Clean Sweep hydraulic system designed to directly
clean areas of the cutting structure prone to bit balling and mudpacking.
Clean Sweep’s unique design allows aggressive cleaning of the heel row, the
gauge trimmers and gauge compacts. The nozzle position minimizes flow
recirculation and turbulence, providing superior chip removal.
BOSS Stabilization
The BOSS Stabilization System features unique integrated
stabilizers which provide near six point contact
with the borehole wall. This new technology provides
unequaled bit stability while protecting the cutting
structure from damaging blows.
HUGHES CHRISTENSEN 17