Optimization of Oil Production

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Presentation transcript:

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: Modelling the system Finding optimal well pressures Finding candidates for self-optimizing CV’s

Model Wells Manifold Production Pipe 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