Maximize ROP within allowable limits
Throughout drilling, the Schlumberger well operations analyst outlined
well monitoring workflows and processes that would enable Det Norske to push
ROP to the maximum limit as safely as possible. In a field development project
in which each well is very similar to the next, ROP limits could be challenged,
especially in the overburden. By determining this limit, it becomes possible to
drill wells at a higher ROP without jeopardizing wellbore integrity or
safety.
To avoid similar challenges experienced in past wells, Schlumberger well
operations analyst designed a program with a focus on monitoring and detecting
warning signs during tripping. Real-time broomstick plots are streamed to the
drilling supervisor's screen on the rig and at the Det Norske office to
increase awareness of any trouble zones experienced while tripping.
Schlumberger well operations analyst providing the OptiWell service are
trained and experienced in using VIRTUAL HYDRAULICS software, enabling tripping
schedules and hydraulic simulations to be available to operators 24/7. While
tripping, real-time KPIs—including actual versus simulated tripping
speeds—are used to determine tripping efficiency.
Prioritized a focus on tripping to reduce NPT
In consideration of significant challenges in running lower completions
and casings in the past, Det Norske and Schlumberger updated the operator's
drilling and tripping practices and completed several runs without any of the
previous challenges.
Since integrating the OptiWell service across its operations on the Ivar
Aasen project, Det Norske has also seen a continuous improvement in the makeup
and laydown times of its BHAs.
On the recent D-19 well in the Ivar Aasen project, Det Norske set new
field records for net and gross ROP in both the 8 1/2-in and 12 1/4-in
sections. The operator experienced a 48% decrease in slip-to-slip tripping time
compared with the project average and achieved improved casing slip-to-slip
performance.