Casing/Liner Drilling
Reduce NPT
Casing/liner drilling reduces
nonproductive time while minimizing risks and problems associated
with conventional drilling. In addition to reducing well control,
borehole stability and lost circulation problems, our technology
also eliminates the risks associated with heavy drillpipe handling
for improved rig-floor safety.
EZCase
and EZReam
Our casing/liner drilling bits—EZCase™ technology and
EZReam™ technology—are equipped with heavy-duty cutting structures and steel
construction for structural strength, enabling them to drill and
ream through longer hole sections to TD. Using EZReam technology,
which is the first steel reaming shoe that is PDC drillable, you can
guide a casing/liner through a pre-drilled hole to TD. With EZCase
technology, you can also drill ahead in virgin formation to reach
TD. Operator saves $200,000 with EZCase
An operator working in Argentina wanted to eliminate running 20"
surface casing by drilling with casing while isolating the
shallowest thief zone. The operator drilled an 870 ft section to
reach section TD at 20.5 ft/hr through clay and soft sandstone,
successfully isolating the trouble zone with 17 1/2" EZCase
technology on 13 3/8" casing. The last 440 ft were drilled with
total lost circulation. The operator saved $200,000 by eliminating a
26" bit and 20" casing string and reducing drilling time by three
days. Because the operator did not need heavy drill collars and
drill pipes, rig safety was enhanced significantly. Drillout faster with EZReam
We put an 8 1/4" EZReam bit with our patented unique concave profile to the test. This
profile ensures that the EZReam bit is drilled from the
center to the shoulder without leaving junk in the hole
during drillout. The EZReam bit was cemented into rock
and drilled out with a 6" PDC bit. Average WOB was 3,000
lbs at 50 rpm. Maximum torque was in the range of only
500 ft-lbs. We completed the EZReam drillout in 11
minutes. No visible damage occurred to the PDC cutters
on the drillout bit.
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