1. Offshore Drilling Operations Jeff Bugden Canada-Newfoundland Offshore Petroleum Board

2. Outline n Project Management & Engineering n Equipment and Systems n Typical Offshore Drilling Program n Operational Considerations

3. Atlantic Basins

4. TERRA NOVA FACILITIES CONCEPTUAL LAYOUT Source: Petro-Canada, 1997

5. Ice Bergs

6. Glory Holes

7. Glory Holes - Dredging

8. Terra Nova FPSO

9. HIBERNIA PRODUCTION SYSTEM

10. Drilling Installations

11. Nomenclature n BHA n Mudlogging n SCSSV n BOP n LWD n CT n KOP n MWD n Fishing n Topdrive n Xmas tree n Sidetracking n Logging n MDT n Kick n Wellhead

12. Part 1 - Project Management & Engineering Considerations n Drilling Installation n Well Design n Contracting and Procurement n Casing, Cementing, Drilling Fluids

13. Drilling Installation Geological Prospect (well depth, pressures) Environmental Factors (weather, ice, water depth, station keeping) Regulatory Requirements Solids Control Pipe Handling Eqpt Well Control EquipmentRated Drilling DepthPower Requirements (hoisting equipment, mud pumps, rotary system)

14. Conceptual Well Design Well Design Geological Objectives Evaluation Objectives Drilling Hazards Formation Pressures “Problem” Zones Offset Well Data Time Estimate Cost Estimate $$ BUDGET $$

15. Casing Program Casing Design Geological Objectives Evaluation Objectives Testing Program Overpressure Zones Fracture Pressures Lost Circulation Zones Detailed Design (Burst, Collapse, Tensile, Wear, H 2 S) Grade, Weight, Connectors, Setting Depth Regulatory Requirements

16. Cementing Program Cementing Temperatures Fracture Pressures Lost Circulation Zones Zone Isolation Well Abandonment Well Control Detailed Design Cement tops, recipes, slurry properties, additives, displacement rates, centralization, equipment & procedures Regulatory Requirements

17. Drilling Fluids Program Drilling Fluids Wellbore Stability Formation Protection Formation Evaluation Equipment Compatibility Lost Circulation Zones Well Control Recommendations Type, desired physical and chemical properties, solids control requirements Torque and Drag

18. Directional Drilling Program Directional Program Current Targets Future Targets Formations Faults Dip Torque and Drag Recommendations Type of Curve, KOP, BUR, DOR, BHA, Directional Drilling Assembly, MWD Equipment

19. Bit Program Lithology (well logs) Compressive Strength Abrasiveness Stickiness Offset Bit Records Economics Recommendations Bit Types (Roller Cone or PDC), Hydraulics (Nozzles), Motor/Turbine Drilling, WOB, RPM

20. PDC/Roller Cone Bits

21. Part 2 - Equipment & Systems n Circulating System n Motion Compensation Equipment n Drilling Assembly n Hoisting System n Well Control System

23. Motion Compensators

24. Marine Riser

25. Drilling Assembly

26. Drawworks

27. Crown Block

28. Top Drive

29. Drill Floor

30. Iron Roughneck

31. Mud Pumps

32. Drillers Cabin

33. Well Control System - BOP Stack

34. BOP Control System

35. Part 3 - Typical Drilling Program Assumptions: Semisubmersible Anchored 100 metre water depth

37. Typical Drilling Program n Position rig. n Run Anchors. n Pretension mooring lines. n Survey seafloor with ROV.

38. Typical Drilling Program n Run TGB. n Spud well. n Drill 36” (914mm) hole to 200 metres. n Run and cement 30” (762mm) conductor pipe with PGB and low pressure wellhead housing.

39. Typical Drilling Program n Drill 26” (660mm) hole to 500 metres. n Run and cement 20” (508mm) surface casing with high pressure wellhead housing. n Run BOP stack and marine riser.

40. Typical Drilling Program n Drill 17 1/2” (445mm) hole to 1,500 metres. n Run wireline logs. n Run and cement 13 3/8” (340mm) casing.

41. Typical Drilling Program n Drill 12 1/4” (311mm) hole to 3,000 metres. n Core any hydrocarbon intervals n Run wireline logs. n Run and cement 9 5/8” (244mm) casing.

42. Typical Drilling Program n Drill 8 1/2” (216mm) hole to 3,500 metres. n Core any hydrocarbon intervals n Run wireline logs. n Run and cement 7” (178mm) liner (if well is to be tested).

43. Part 4 - Operational Considerations n Heavy Weather u Marine Forecasts u Operational Limits n Ice Bergs u T-Time u Ice Management

44. Forecasts n Wind Speeds n Waves n Heave n Pitch and Roll

46. Wind Speeds

47. Heave

48. Jeanne d’Arc Basin Operations - Floating Operations Manual Safe Operational Limits

49. T-Time

50. Ice Management

51. Concluding Comments

52. THE END