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Optimization of Oil Production

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 .

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Optimization of Oil Production

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  1. Optimizationof Oil Production

  2. introduction • Ane Cecilie Duus • Optimization of oil production • Supervisor: Sigurd Skogestad • Co-Supervisors: Chriss Grimholt & Johannes Jäscke

  3. Troll west rig

  4. Why Relevant? • In existingreservoirs 50% oilstayunrecovered. • Increase by 1% canincreasevalue by 10-20 billion NOK. • Most potential lies in productiontechnology.

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

  6. Model • Wells • Manifold • Production Pipe • Separator pressure

  7. 1. Well Preformance Curves

  8. 3. Pressuredrop Relations

  9. Optimization Objective function:Maximize oil flow in production line

  10. Objective Function

  11. Result:Optimal Well Pressures

  12. Effect of disturbance?

  13. 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

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