Well Architecture & Directional Drilling in Unconventional Wells

UNCO/UARCDDE

Who should attend?

  • This course provides a comprehensive information to successfully prepare and achieve a directional well, including the architecture.
Audience :
  • Drilling supervisors, tool pushers, engineers and other professionals involved or interested in well architecture and directional drilling.

Level : Foundation

Course Content

  • DRILLING & CASING PROGRAM

      • Role of casings.
      • Parameters to be considered to determine well architecture:
      • Well type.
      • Pore and frac. pressures.
      • Completion, lithology.
      • Different types of casings:
      • Surface.
      • Intermediate.
      • Production.
  • CHARACTERISTICS OF CASINGS

      • Geometric, physical and mechanical properties of pipes and connections.
      • Use of Drilling Data Handbook.
  • SHOE POSITIONING

      • Hypotheses to be considered, casing point - Kick tolerance.
      • Examples and exercises.
  • CASING STRING CALCULATION

      • Principles and assumptions to remember for the different strings.
      • Stress cases study:
      • Collapse.
      • Burst.
      • Tension.
      • Tri-axial study.
      • Safety factors.
      • Casing selection: examples and exercises.
  • CALCULATION EXAMPLES

      • Case studies and writing of a spreadsheet in order to determine the casing point, the kick margin, the pressure max…
  • DIRECTIONAL DRILLING EQUIPMENT

      • Specific drilling equipment: downhole motors, rotary steerable system.
      • Measuring equipment: MWD.
  • DRILLING ENGINEERING

      • Well planning and trajectory calculations.
      • Limits of use of a drill string: buckling.
      • Drill string design.
      • Torque and drag calculation.
      • Drilling fluids and cementing program.
      • Hole cleaning.
      • Logging.
      • Well control.
  • HORIZONTAL & ERD

      • ERD, multilateral and short radius.
  • CASE STUDIES

      • Writing of a spreadsheet in order to determine the trajectory of a 2D well according to the needs.
  • KNOWLEDGE ASSESSMENT

Learning Objectives

  • Upon completion of the course, participants will be able to:
  • calculate different casing strings using the Drilling Data Handbook,
  • select the right position of casing shoes,
  • calculate the stress applied to the casing pipes,
  • choose the right wellhead with regards to the casings used,
  • know the equipment needed for directional drilling,
  • design a directional well,
  • calculate the trajectories of a deviated well in 2D,
  • design the drill stem adapted to the well’s profiles to reach a target,

Ways & Means

  • Exercises.
  • Movies.
  • Work in groups, teamwork.
  • Computer use for the design of a personal spreadsheet program.