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Real-Time Hole Cleaning Simulation Using Mud Logging Unit Data

Darijani, Mohammad Saeed | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 57480 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Jamshidi, Saeed
  7. Abstract:
  8. Hole cleaning refers to the ability of the drilling fluid to transport and suspend drill cuttings. Inadequate hole cleaning can lead to numerous problems, including non transportation of drill cuttings, pipe sticking , bit wear, slowed drilling, formation fractures, increased torque and drag, wellbore instability issues, and more. Although issues due to inadequate cleaning are observed in vertical wells, cleaning problems are generally more severe in deviated and horizontal wells. Several factors can affect hole cleaning, including fluid velocity, maximum equivalent density of the drilling fluid, wellbore inclination angle, ROP, eccentricity, mud properties, and cutting properties. This dissertation attempts to identify the hole cleaning process by matching a downhole hydraulic simulator with surface mud unit data simultaneously. In case of a problem, it will assist the driller in resolving these issues by changing the aforementioned factors. In this project, by developing a hole cleaning simulator and using data obtained during drilling from the mud logging unit, the well’s condition in terms of cleaning will be determined. The aim is to quickly identify cuttings accumulation in the wellbore and prevent potential problems caused by this phenomenon by promptly sending warning messages to the drilling personnel at the earliest possible time. This simulator will be applicable in various types of wells, including horizontal, vertical, and deviated wells, by considering wellbore trajectory data
  9. Keywords:
  10. Hole Cleaning ; Simulation ; Horizontal Wells ; Drilling Cutting ; Deviated Wells

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