Bit & Drill String & Fishing while DrillingDRIL/OUTGARNE

Who should attend?

  • This course provides an in-depth theorical and practical knowledge of drilling bit, drill string and fishing techniques with its specific equipment.
Audience :
  • Young engineers and supervisors, toolpushers with some experience in drilling.

Level : Foundation

Course Content

  • BIT

      • 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

      • 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.
  • FISHING WHILE DRILLING

      • 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

Learning Objectives

  • Upon completion of the course, participants will be able to:
  • acquire the basic knowledge on the drilling bit and the drill stem,
  • carry out basic calculations on the drill stem,
  • choose a drill stem,
  • use the different elements of the drill stem,
  • learn about main techniques and equipment used to solve a fishing problem while drilling.

Ways & Means

  • Course material (PPT, video).
  • Individual and group exercises.
  • Visit of VAREL Europe manufacturer
  • Instructor with a valuable experience in drilling operations.
  • Application to a real case (project) for the participants in the “Drilling and Completion Engineering” training course (page 154).