Drilling Bit and Drilling Design


The course is designed to introduce the student to the selection and operation of drilling bits. The course emphasized in various bit types available, criteria for selecting the best bit for a given situation, standard methods for evaluating dull bits, factors affecting bit wear and drilling speed, optimization of bit weight and rotary speed.

  • Participants will be able to make complete design for the drill string and the factors that affect on the design.


  • Bit Types
  • Rolling Cutter Bits
  • Polycrystalline Diamond Bits
  • Standard Classification of Bits
  • Rock Removal Mechanisms
  • Erosion by find Jet Action Crushing or percussion
  • Torsion or twisting
  • Failure Mechanisms of Rolling Cutter Bits
  • Bit Selection and Evaluation
  • Grading Tooth Wear
  • Grading Bearing Wear
  • Abnormal Bit Wear
  • Factors Affecting Tooth Wear
  • Effect of Tooth High on Rate of Tooth wear
  • Effect of Rotary speed on Rats of tooth Wear
  • Factors Affecting Bearing Wear
  • Terminating a Bit Run
  • Factors Affecting penetration Rate Bit Type
  • Formation characteristics
  • Bit Tooth Wear Bit Hydraulics
  • Penetration Rate Equation
  • Bit Operation
  • Introduction: gives the scope, general information and definition for the standard.
  • Design: Gives Procedures for Drill Stem Design. Industry Accepted Design Formulas are employed, but the Design Methodology is presented in easy-to-use Worksheets.
  • Inspection: Presents recommended inspection methods and required procedures for used drill pipe. Rotary shouldered connections, heavy weight drill pipe and drill collars.