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Optimization of Oil Production. introduction. Ane Cecilie Duus Optimization of oil production Supervisor: Sigurd Skogestad Co-Supervisors: Chriss Grimholt & Johannes Jäscke . Troll west rig. Why Relevant?. In existing reservoirs 50% oil stay unrecovered . - PowerPoint PPT Presentation
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Optimization of Oil Production
introduction• Ane Cecilie Duus
• Optimization of oil production
• Supervisor: Sigurd Skogestad
• Co-Supervisors: Chriss Grimholt & Johannes
Jäscke
Troll west rig
Why Relevant?
• In existing reservoirs 50% oil stay unrecovered.
• Increase by 1% can increase value by 10-20 billion NOK.
• Most potential lies in production technology.
Project:
1. Modelling the system
2. Finding optimal well pressures
3. Finding candidates for self-optimizing CV’s
Model1. Wells
2. Manifold
3. Production Pipe
4. Separator pressure
1. Well Preformance Curves
3. Pressuredrop Relations
Optimization
Objective function:
Maximize oil flow in production line
Objective Function
Result: Optimal Well Pressures
Effect of disturbance?
Self-optimizing variables
• Implementing disturbance in well compositions
• Applying the Null Space Method
• Loss evaluation:3 times less than without
control
• Potential for further work on control structures