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Water-Based Drilling Fluid Design Considering Thermal Stability by Nano Material and Evaluation Filtration Loss, and Shale Swelling Criteria for Usage in very Deep Drilling

Parhizgar, Mahmood | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 49328 (66)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Goodarznia, Iraj; Ramazani, Ahmad
  7. Abstract:
  8. The aim of this project is designing Suitable drilling fluid applicable in deep drilling. This aim will be reached by adding a temperature-resistant polymers or nanomaterials in water-based drilling fluid, Rheological properties of drilling fluid checked. Stability of rheological properties of drilling fluids not constant in HT state. Chain of cause and effect will happen, While the temperature increases, the viscosity and yield point of the fluids decreases. cuttings transportation and removal efficiency will be decreased due to reduction in yield point and viscosity. Evaluation of The effect of these cases conclude that these effects will also impact on filtration loss. The reason is that the velocity of drilling fluid is low in directional drilling; therefore, the probability of filtration invasion will be increased. It will increase formation damage and evaluation the effect of these materials on shale swelling comes into consideration. the well diameter is gradually reduced, in deep directional drilling and in case of shale swelling, the drill-pipe will be stuck. designing a suitable drilling fluids in this project, in order to achieve an appropriate formula for use in deep drilling
  9. Keywords:
  10. Drilling Fluid ; Nanomaterials ; Rheology ; Filtration Loss ; Soil Swelling ; Shale Formation

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