Overview
Describes the types of deepwater drilling units (semi-submersibles and DP drillships), their specific equipment, and the techniques used from a rig's arrival on location to cementing the conductor casing, along with major issues, solutions and environmental forces in deepwater operations (300 to 3,000 m).
Course agenda
Module 1: Floating drilling units
- History
- Semi-submersibles and DP drillships
- Environment and rig motions
- Storage and handling systems
- Rig inspection and selection
- Marine support vessels
Module 2: Vessel stability
- Stability theory and calculations
- Stability at large angles
- Ballast control
- Damage flooding countermeasures
Module 3: Mooring systems
- Mooring principles and spread mooring
- Mooring hardware, design and analysis
- Anchor handling vessels
- Mooring deployment and anchor recovery
Module 4: Dynamic positioning
- DP system and position references
- Thrusters and power systems
- DP reliability and operations
- Drive-off and drift analysis
Module 5: Open water operations
- ROVs
- Subsea wellhead components
- Structural and conductor casing
Module 6: Riser systems
- Riser components and connectors
- Choke, kill and auxiliary lines
- Buoyancy, slip joint, tensioners and flex joints
- Riser analysis and tensioning criteria
- Emergency disconnect, hang-off and high current operations
Module 7: Subsea wellheads and casing
- Equipment and running tools
- Casing operations
- Cementing equipment and operations
Module 8: BOP equipment
- Wellhead and LMRP connectors
- Ram and annular preventers
- Choke and kill valves and lines
- MUX control systems and control pods
- Backup systems and BOP stack testing
Module 9: Emergency disconnect
- Alarms, sequencing and timing
- Space-out and drill pipe hang-off
- Motion compensation
- Wellbore re-entry
Module 10: Plug and abandonment
- Abandonment regulations and guidelines
- Isolating zones and casing shoes
- Plugging liner tops and annuli
- Surface plugs and wellhead removal