On pad 23-2131, an MSi616 SHARC drill bit was used in the intermediate
121⁄4-in section, which was driven by a PowerDrive vorteX RSS for
supercharged drilling in the 81⁄2-in section. The PowerDrive vorteX RSS
has an inclination hold function that allows automatic drilling of a horizontal
section without intervention from the directional driller. This automatic
downhole control enables accurate drilling of a hold section at higher ROP.
The SHARC bit was run on the PowerDrive X6 RSS and PowerDrive vorteX RSS
to provide additional torque and accurate geosteering. The viscosifier was used
because of its unique ability to produce a fluid that is highly shear-thinning
and thixotropic.
Drill complex well trajectory 4 days ahead of plan
The customized system drilled 3,871 m, the longest well and the most
complex well trajectory ever drilled in the field. Despite NPT of 30 hours
caused by rig repair and harsh weather, the system achieved an operational rate
of 6.15 d per 1,000 m, an improvement over the previous record of 6.33 d per
1,000 m.
The well was delivered more than 4 days ahead of the planned drilling
curve.
