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The Simultaneous Effect of Nano Ferric Oxide and a Liquid Additive on Viscosity and Power Transmission of Drilling Cuttings to the Surface on the Water Base Mud Drilling to Optimization of These Properties

Mohammad Gheimasi, Mostafa | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 49010 (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. Transportation of cuttings and efficiency of the hole cleaning has been one of the major concerns of stake holders in the oil and gas industry.This is because a successful drilling program is a key to a productive and profitable oil and gas business. A successful drilling program is as a result of an efficiently cleaned hole. On the other hand, a poor or inefficient hole cleaning implies accumulation of cuttings or formation of cuttings bed in the well. This often leads to decreased rate of penetration, increased cost of drilling, fractured formation, increased plastic viscosity of mud as a result of grinding of cuttings and stuck pipe. Hole cleaning is effected primarily with a drilling fluid. The function of a drilling fluid is chiefly the transportation of cuttings out of a drilled hole. Other major functions of a drilling fluid in a drilling program include: cooling and lubricating the bit and drill string, cleaning of the bottom of the hole, removing cuttings from mud at the surface, minimizing omit of formation damage, controlling omit formation pressures, hole integrity maintenance, improving omit drilling rate, aiding omit well logging operations, minimizing contamination problems, torque, drag, pipe sticking and corrosion of the drill string, casings and tunings. Cuttings transport studies in vertical and deviated wells have been reported over the last four decades and are still on going. Among the conclusions ,as will be seen in the literature from the numerous studies reported are that cuttings transport efficiency of a drilling program depends on the following factors: Hole geometry and inclination. Average fluid velocity. Fluid flow regime (lamina or turbulent). Drill pipe rotation. Pipe eccentricity. Fluid properties and rheology. Cuttings Size and Shape. Cuttings Concentration. Cutting Transport Velocity. Rate of Penetration. Multiphase flow effect
  9. Keywords:
  10. Drill Pipe Rotation ; Rheological-Performance properties ; Cutting Transport ; Multiphase Flow ; Drilling Cutting ; Fluid Flow Regime ; Penetration Rate

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