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Oil & Gas Training
and Competency Development
Competency Management system SLB NEXT

Drillstring Design - RILS

This is a Remote Instructor Led Series training, all training sessions will be delivered online with no face-to-face classroom attendance.                                                                            

Each day's sessions will be of maximum 4 hrs per day.   

The course provides a comprehensive treatment of drill string design as well as the avoidance of operational problems and wear on equipment following the API recommended practices for design and operating limitations as well as an overview of the standard DS1 for design and inspection.

BHA design concepts are investigated, with emphasis on practical engineering calculations and safe operating procedures. Industry standards are used as training aids to supplement the presentation material and provide a thorough understanding of drill string components, designs, operating limits and working practices.


teel And Submerged Tubulars

  • Introduction - pre-class test
  • Overview of Mechanical Properties of Steel & Basic Concepts
  • Buoyancy - Axial Forces and Buckling in Submerged Tubulars
  • Introduction to API RP7G for Drill Stem Design and Operating Limits - DP Elements 

Drill Stem Design, Drill Pipe Specifications and Connections

  • Drillpipe Specs - Steel Grade – Tool Joints – Make-up Torque – Drillpipe Classification – Drillpipe Marking
  • Drillstring Tension Design based on Margin of Overpull and SCF
  • Collapse, Burst and Torsion Design

Bottom Hole Assembly and Drillstring Dynamics

  • Bottom Hole Assembly (BHA) Selection and Design – Drill Collar and Heavy Weight Drill Pipe (HWDP) Specifications and properties – BHA Design Process
  • Bending Strength Ratio – Stiffness Ratio – Stress Relief Features

Bottom Hole Assembly and Drillstring Dynamics (Cont..)

  • BHA Design for Directional Drilling Applications
  • Drillstring Dynamics 

Drill String Care 

  • Overview of Drill String Failures and Prevention – Group 1 and Group 2 DS Failures
  • Standard DS-1 Overview


  • Drilling Engineers
  • Drilling Supervisors
  • Junior Directional Drillers
  • Senior Well Engineers
  • Tool Pushers

Participants should be skilled in both drilling engineering and math. Participants must have a scientific calculator for use in the class.

Currently there are no scheduled classes for this course.

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