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E-421 - Bit, Drill String & Fishing While Drilling

  • Young engineers and supervisors, toolpushers with some experience in drilling
  • To provide an in-depth, practical knowledge of bit, drill string, and fishing techniques and equipment
Learning Objectives
  • To acquire the basic knowledge on the bit and the drill stem
  • To carry out basic calculations on the drill stem
  • To choose a drill stem
  • To use the different elements of the drill stem
  • To learn about main techniques and equipment used to solve a fishing problem while drilling
Ways and means
  • Application to a real case (project) for the participants in the “Drilling and Completion Engineering” training course (E-412)

Bit 2 days
  • Bit different types and classification
  • Bit use and drilling parameters
  • Dull grading
  • Bit nozzle selection
  • Bit selection
  • Visit of a Varel manufacturing unit
Drill string 1.75 days
  • Distribution of stresses in the drill stem, neutral point
  • Drill pipes: characteristics, limits of use, combination of stresses, buckling
  • Drill collars: characteristics, profile, threading, choice of diameter
  • Auxiliary equipment: kelly, heavy weight drill pipes, stabilizers
  • Drill string selection: first approach
  • Margin of overpull, equiresistant drill string, necessary length of DC
  • Visit of a Vam Drilling manufacturing unit
Fishing while drilling 1 day
  • Different problems found during drilling
  • Causes for sticking
  • Principles of the solutions to sticking
  • Fishing equipment lost in the well, main tools used
  • Avoiding sticking and losses of equipment in the wells
Knowledge assessment 0.25 day
2016 course calendar
Language Dates Location Tuition Register
Apr 11 - 15 Pau €3,380 Online By email
Oct 17 - 21 Pau €3,380 Online By email