Implementing a “one team” approach led to a 29% increase in average meters drilled per day, a savings of USD 4.9 million and 6.7 days per well, and a drastic reduction in the number of trips.
Hard and abrasive stingers at the base of the 12 1/4-in section caused high levels of shock and vibration damage to drilling tools. This damage—combined with severe friction, high dogleg requirements, twistoffs, and fluctuating torque values when drilling through interbedded chalk and limestone— caused multiple trips to replace equipment.
To mitigate tool damage, Equinor used an active vibration dampener on conventional tools to improve performance, but it was insufficient.
In 2018, Schlumberger implemented a "one team" approach, leveraging a combination of technologies to maximize drilling efficiency in four wells. The operation included
Additionally, other rig factors were changed: The crew
Upon implementing integrated technologies in four wells, the average meters drilled per day increased by 29% as compared with similar wells, reducing operations cost by USD 4.9 million per well and saving an average of 6.7 days per well. In contrast to the four to nine runs required to drill the two previous 12 1/4-in sections with similar inclination, the sections using Schlumberger technologies were completed in a single run. By using these technologies, Equinor achieved 99% efficiency for the entire scope of the section—not just drilling performance.
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