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BHA & Drillstring Equipment

Date

TBA

Location

TBA

Instructor

TBA

Duration

5 Days

Course Content:

  • 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

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