BHA & Drillstring Equipment
Date: TBA | Location: TBA
Course Duration: 5 Days
- Steel properties
- Drillstring and BHA
- Functions of drill pipe, drillcollars
- Grades of drill pipe
- Drillpipe Strength properties
- Thread types
- Tool joints
- Tool joints
- Torque ratings of Drillpipe and tool joints
- Calculations of approximate weight of drill pipe and tool joint
- Drillpipe stretch
- Drillpipe buckling
- Assessment exercise
- Drillcollars design features
- Drill collar weight and neutral point
- Bending strength ratio
- HWDP
- Reamers
- Stabilisers
- Weight on bit
- Assessment exercise
- Shock Subs
- Jars and accelerators – How they work
- Mechanical Jars
- Hydraulic jars
- Hydro-mechanical jars
- Fishing jars
- Accelerators
- Jar forces calculations
- Cocking
- Firing
- Fault finding,
- Drillstring Design
- Air weight & buoyant weight
- Margin of over-pull
- Drill string design methods: API method
- Calculating maximum permissible length of each drill pipe section
- High angle well design
- Slip crushing forces
- Assessment exercise,
- Pressure-area method
- DST considerations
- Basic torque & Drag calculations
- Assessment exercise,
- Drillstring failures identification
- Corrosion failure
- Fatigue failure
- Drillstring vibrations
- Washouts
- Twist offs
- Drill pipe tube & tooljoint fatigue failure
- BHA connections fatigue failure
- BHA connection stress relief I-BSR
- own hole equipment failure,
- Drill string care and handling practices
- Drillstring inspection methods,
- Exam