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E-454 - Tubing movement & forces

  • Completion engineers or technicians
  • To provide a thorough understanding of tubing movement and forces
Learning Objectives
  • To analyze data and decide which element(s) or parameter(s) of a completion equipment must be modified to solve problems related to tubing movement
  • To write a completion program taking tubing behavior into account
  • To analyze correctly a tubing behavior-related problem encountered during operation and provide an adequate solution
Ways and means
  • Exercises and a large case study

General principles 0.5 day
  • Presentation of the problem
  • Parameters to be verified (worst place and case) and possible cures
  • Reference state and present states of the well, various conventions
  • Calculation principle
  • Computation of temperature and pressure changes
Case of a downhole binding device permitting free tubing movement 1 day
  • Temperature effect
  • Ballooning effect
  • Piston effects (not including buckling)
  • Effect of the friction resulting from the fluid flow
  • Buckling effect
  • Awareness to the key parameters
  • Buckling criteria
  • Location of the neutral point and determination of the movement resulting from buckling
  • Global effect: movement of the sliding binding device, tension force at the wellhead....
Case of a downhole binding device permitting no tubing movement 0.5 day
  • Calculation principle
  • Estimation of flink
  • Determination of flink taking buckling into account
Case study 1 day