• General Information
This course is designed for experienced drilling engineers with little or no background HPHT experience who wish to proceed their career in HPHT fields. It will introduce HPHT well complexities and will teach participants how to identify specific areas where detailed design is required to properly plan and drill HPHT wells.
• Course content
Course title
Course duration
Course content
High Pressure High Temperature (HPHT) Drilling
4 Days
Fluids
• Mud types and selection
• ECD issues
• Temperature effects
• Barite sag
• Compressibility
• Fluid stability
• Elastomer compatibility
Well control
• Pore pressure and fracture
gradient windows
• Gas expansion
• Formation charging / ballooning
• Loss circulation
• Crew awareness and training
• Dissolved gases in mud
• HPHT well control procedures
and equipment
Well and drillstring design
• Design considerations
• Loads on casing and tubing
• Shoe placement
• Effect of doglegs
(conductor verticality)
• Connection selection
• APD due to heat / thermal expansion
• Temperature deration
• Casing wear
• H2S and CO2 effects
• Torque and drag
• Design safety factors
• Failure of downhole tools
• Wellbore stability
• Running tubulars in tight gradients
• Critical cement placement
• Hole size selection to match ECD requirements
• Casing / liner pressure testing decisions
• Liners versus long strings
Rig selection
• Types of rigs and suitability
• Rig equipment rating
• Additional equipment required
Equipment
• Downhole equipment selection
• Solids control equipment
• Torque and vibration mitigation
• Logging tools
Well planning
• Risk assessment
• Decision trees
• Contingencies
• Relief well planning