Maximize drilling fluid performance and minimize drilling costs.
An automated LPAC MPD system was rigged up and wellbore pressures were kept constant using a mud weight of 9.8 ppg. Fluid losses were minimized and wellbore gas influxes were mitigated. Using this method, the fluid column weight was controlled and predictable, and allowed for accurate modeling using VIRTUAL HYDRAULICS. Using MPD, the mud weight was maintained at 9.8 ppg, and kill weight mud pills were constructed to offset the ECD of 12.5 ppg. This equated to a 0.3 ppg trip margin and allowed safe pipe tripping. During the initial casing run, gas influxes were seen and required shut-in procedures. Well control procedures ensued and the casing was stripped to TD. Successful cementing of this liner then proceeded and good returns were seen throughout the cement job.
Days on the well were reduced from 41 days to 17 days with the associated cost saving attributed to successful implementation of @balance Services MPD.
Solution: MPD techniques by @balance Services in combination with modeling of the ECDs using VIRTUAL HYDRAULICS allowed for better well control.