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E-461 - Coiled Tubing & Nitrogen Operations in Completion & Workover

E-461 - Coiled Tubing & Nitrogen Operations in Completion & Workover

5 days
PRO/CTAE
Sessions
This course is not scheduled.
Who should attend?

Audience

    • Engineers, supervisors, technicians from operating or service companies, involved in completion, workover and stimulation.

Level

  • Proficiency
  • This course provides a comprehensive, practical knowledge of coiled tubing equipment and operations on a producing well.
Learning Objectives
  • Upon completion of the course, participants will be able to:
  • learn about coiled tubing applications in completion and workover,
  • design coiled tubing programs (wellbore treatment, logging, cementing, lifting and drilling).
Course Content

BASIC DATA

0.25 day

  • Importance of nitrogen in stimulation and workover.
  • Importance of coiled tubing in completion and workover.

NITROGEN - NITRIFIED ACID - FOAMED ACID

1 day

  • Nitrogen (properties, basic formula for design).
  • Specifications for nitrogen storage and pumping equipment.
  • Two-phase fluids and foams (properties, chart and tables for design, difference between foam and two phase fluids), diverting effect of foamed fluid.
  • Stimulation methodology, flow back procedure.

COILED TUBING EQUIPMENT (technology, dimension, weight)

0.75 day

  • Main components: reel, injector, BOP and related equipment.
  • Auxiliary equipment: crane, pumping equipment, etc.
  • Downhole tools: connectors, safety equipment, circulating tools, downhole motor, fishing tools, inflatable packers, etc.
  • Guide for safe equipment rig-up.

PIPE CHARACTERISTICS & BEHAVIOR

0.5 day

  • Geometric and mechanical properties: geometry, metallurgy, performance, characteristic curve.
  • Tubing behavior (at surface, in hole): fatigue, buckling, tension and pressure limits (tubing force analysis, model for operation design).
  • Measuring and recording of operating parameters.

COILED TUBING APPLICATIONS

2 days

  • Kick off with nitrogen, underbalance perforating.
  • Well clean out (fill removal, wax and hydrate removal).
  • Sand control.
  • Matrix treatment: acid, solvent.
  • Other applications: CT assisted DST, conveyed tool operations in high deviated well, use as producing, gas-lift or chemical injection string, fishing, underreaming, drilling.
  • Statistics, economy, areas for future development.

CEMENTING OPERATIONS WITH NITROGEN OR COILED TUBING

0.5 day

  • Foamed cement: definition, use (primary cementing, squeeze).
  • Cementing through coiled tubing: cement plug, squeeze (squeeze slurry characteristics, job design, key-points).
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Ways & Means
  • Exercises - Animations.