Optimize BHA design with bit customized for best performance
Because the underpowered rig limited the options for adjusting drilling
parameters to make improvements, the team focused on BHA optimization.
Schlumberger proposed replacing the other bit with a custom drill bit designed
by the IDEAS platform from Smith Bits, a Schlumberger company, specifically to
meet requirements for the BHA, lithology, and planned trajectory. The platform
was used to select a directional MDi416 fixed cutter PDC bit, then analyzed and
simulated the downhole conditions to ensure optimal performance before drilling
operations even started.
Boost average ROP from 15 to 34 m/h
In the first well drilled using the PowerDrive X6 RSS BHA with the
MDi416 bit, the team achieved all drilling objectives, including those for
performance improvement. Average ROP was increased from 15 m/h in previous
wells drilled with another manufacturer's bit to 34 m/h with the custom drill
bit designed using the IDEAS platform. This boost in drilling performance saved
the operator approximately 1 day of drilling time off the average for previous
wells in the field.