The OSC team provided drilling risk forecasts and recommendations to the offshore and onshore drilling team through daily updates, or as needed. High levels of communication and seamless teamwork established a proactive approach that was key for successful drilling.
Enabling predictive decision making
The real-time geomechanics workflow and modeling predicted and mitigated wellbore stability issues during drilling operations. This process calculated a pore pressure ramp that was shallower and of greater magnitude than was anticipated from offset well information.
This resulted in an informed decision to set the 11 7/8-in casing early. The 9 5/8-in casing was then pushed 1,700 ft deeper than planned because further real-time modeling indicated no stability issues would be encountered. The operator therefore had the flexibility to save a liner string or finish the well in a 7 1/2-in hole.