Thursday 22 nd of March 2012

1. Photo courtesy of Howard Johnson Wytch Farm Field Development Project Thursday 22nd of March 2012 Marcel&Conradfor Team B Mohammed Alshawaf , Lanray Hammed Bakare, Francisco J. BarrosoViseras, AristeidisKaramessinis, Ha Nguyenand Shi Su

2. Field overview • Southern coast of the UK • Onshore and offshore • High sensitive environmental area: AONB, HC among others BP for Imperial College, 2012

3. Aim and objectives • Prove the economic viability of the project • Characterise and model the reservoir • Propose a development and production plan • Demonstrate the economic facts • Assess the uncertainties and risks

4. Reservoir facts Characterise reservoir • Geological overview • Reservoir Sherwood Sandstone • Seal Mercia Mudstone • SourceLiasFormation • Play type Tilted fault blocks Propose plan Demonstrate economics • Field appraisal • 3D seismic survey • Producers 1X-02, 1D-02 • Appraisal wells 3 Assess uncertainties and risks Recommend Underhill & Stonely, 1988 Underhill & Stoneley, 1988 Source Seal Reservoir

5. Building a simulation model Characterise reservoir • Integrate various sources: from outcrop to cores • Coarsen to allow simulation • QC to ensure consistency Propose plan 2.5 million 80,000 cells Demonstrate economics Assess uncertainties and risks Recommend

6. Development plan strategy • Oil expansion and aquifer drive are the most plausible • Low primary recovery => water injection Characterise reservoir Propose plan Demonstrate economics Assess uncertainties and risks Recommend

7. Development plan results Characterise reservoir • 3-year plateau • Injection starts after 14 months • 318 MMstbrecoverable • 40% recovery factor based on P50 Propose plan STOIIP 795 MMstb Recovered 318 MMstb Demonstrate economics Assess uncertainties and risks Recommend

8. HSE Policy Characterise reservoir High responsibility policy • Labour accidents • Oil and gas spillage • Noise pollution and biodiversity Propose plan Demonstrate economics Assess uncertainties and risks Recommend

9. Surface facilities and export Characterise reservoir • Transport • Flowlines • Separation • 3-stage Gas Liquid • Treatment • Chemical additives • Water • Storage / Export • Pipelines • Terminals • Oil • 75 km, 18” OD pipeline • Gas • 34km, 8” OD pipeline • Pressure regulation tie-in • LPG • 4 km, 6” OD pipeline • LPG loading plant Propose plan Demonstrate economics Assess uncertainties and risks 16.5 km Recommend

10. Project economics Characterise reservoir • Ensureviability of the project • Estimate annual cashflows • Assessuncertainties Propose plan Demonstrate economics Assess uncertainties and risks Recommend

11. Project economics Characterise reservoir Propose plan Demonstrate economics Assess uncertainties and risks Recommend

12. Reducing uncertainties Characterise reservoir Data acquisition plan • Reprocess seismic data • Coring of the first few wells SCAL • Logging Propose plan Demonstrate economics Assess uncertainties and risks Recommend

13. Risk analysis Characterise reservoir • Flow assurance, facility checks Propose plan • Training, PPE, housekeeping • Various production plans Demonstrate economics • Pollution prevention, noise reduction Assess uncertainties and risks • Promise work positions Recommend

14. First oil Project lifecycle Characterise reservoir Propose plan Demonstrate economics Assess uncertainties and risks Recommend

15. Recommendations Characterise reservoir • Environmental regulations upheld • Shrewd reservoir management practices planned • High profitability achieved • Efficient mitigation schemes designed Propose plan Demonstrate economics Assess uncertainties and risks Recommend

16. Safely Thank you Any questions ? Reliably Cost-Effectively

18. Appendices • Drive mechanism • Sweep efficiency • Upscaling: • Tubing performance • Pipelines design: • Drilling mud • Completions design: - Parameters - Quality check - Oil - Gas - Casing - Perforations

19. Drive mechanism determination • Limitations of material balance • Oil expansion and aquifer drive are the most plausible • No assumption can be validated

20. Sweep efficiency analysis • Injection after 14 months • 92% sweep efficiency achievable over 23 years

21. Upscaled model consistency

22. Geology and upscaled properties: facies Coarse grid Fine grid

23. Upscaled properties: kh Coarse grid Fine grid

24. Upscaled properties: Φ % Porosity distribution: Fine vs Coarse grid

25. Cumulative production - Fine grid - Coarse grid

26. Bottom-hole pressure - Coarse grid - Fine grid Injectors Producers

27. Oil saturations Coarse grid Fine grid

28. Sweep efficiency

29. Water cut - Fine grid - Coarse grid

30. Coning water Coarse grid Fine grid

31. Numerical diffusion Coarse grid Fine grid

32. Drilling schedule • 1 permanent rig for each site, 1 moveable rig • Priority based on oil production rate

33. Well type and location • Extended reach wells • 2 well sites

34. Water injection strategy • Water injection after 14 months in order to ensure pressure maintenance

35. Tubing performance, ESP design

36. Gas pipeline design • An optimum of 8” OD has been chosen

37. Oil pipeline design • An optimum of 18”OD has been chosen

38. Mud weight • A mud weight of 1.15 sg has been chosen

39. Casing 36” 150m 20” 550m 13 5/8” 150m 7” 1630m 4” 150m

40. Perforation density • An optimum of 8 spf has been chosen

41. Upscaling parameters