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Numerical Modeling of Stress Applied on Stuck Pipe during Drilling and Completion

Pourzeinolabedin, Arman | 2021

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 54737 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Shad, Saeed; Zivar, Davood
  7. Abstract:
  8. There is many operational problems in the drilling industry. One of these basic problems is stuck pipe. This problem occurs with different intensities in different formations due to particles falling into the well, pressure difference in the formation and drilling mud and instability of the wellbore and creates conditions in which the drilling string can neither rotate nor move, so all Drilling operations are stopped so that according to studies, pipe sticking is one of the most important reasons for stopping drilling operations. This stop imposes millions of dollars of operational damage on oil services companies annually. Therefore, identifying and prediction of stuck pipe as a major challenge is a requirement of the drilling industry.In this research, while categorizing the factors of pipe sticking, simulations have been performed with Abaqus software to investigate the stresses on the drilling pipe in different conditions in order to have a better view of this challenge of the drilling industry. These simulations showed factors such as differential sticking and movement of the layers can apply a lot of stress on the pipe, and reducing the pressure of the drilling mud and using a high strength drilling pipe can reduce the intensity of stress and strain on the pipe
  9. Keywords:
  10. Drilling ; Instability ; ABAQUS Software ; Stress ; Strain ; Cutting Settling ; Stuck Pipe

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