Loading...

Experimental and Simulation Study of Barite Settlement Phenomenon under Static and Dynamic Condition

Movahhedi, Hamed | 2017

735 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49323 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Shad, Saeed; Hosseini Mokhtari, Zahra
  7. Abstract:
  8. In petroleum related drilling, Barite particles settling and Barite sag as major problems in drilling wells can potentially impose significant operational issues. In this study, a computational fluid dynamics (CFD) and experimental investigation of Barite settlement in annular space were conducted in both static and dynamic conditions. The Euler-Euler approach was used to model the multiphase flow of solid Barite particles and drilling fluid. In this approach, the momentum lost between phases has been taken into account by means of particle-particle and particle-fluid exchange coefficients. The governing equations were numerically solved using finite volume method by CFD software package FLUENT. The model was validated with present experimental data. A standard annular flow loop was used in order to experimental investigation. A structured shape 3D grid is chosen to discretize the annular section of this apparatus as a computational domain. The Barite settlement process was analyzed for different conditions such as flow rate, pipe inclination angle, and inner pipe rotation. The results of simulation indicate a good agreement with experimental data for flowing and static conditions. The results indicate that the maximum Barite settlement rate occurs at the inclination angle of 60 for static conditions and 75 for flowing conditions. The results also indicate that the reduction of the Barite settling rate occurs under laminar flow conditions. Furthermore, the inner rotating shaft speed has a significant effect on removing the high concentration of Barite bed at the bottom of the annular section
  9. Keywords:
  10. Numerical Simulation ; Precipitation (Chemical) ; Stationary State ; Computational Fluid Dynamics (CFD) ; Eulerian Method ; Settling ; Barite Sag ; Barite Settling

 Digital Object List

 Bookmark

No TOC