[01] Sorayya Koofe Gheshmi, Department of Chemical Engineering, Sirjan Branch, Islamic Azad University, Sirjan, Iran. [02] Farshad Farahbod, Department of Chemical Engineering, Firoozabad Branch, Islamic Azad University, Firoozabad, Iran.

The drilling fluid is a basic fluid which is applicable and so important in the drilling process. This fluid is not ignorable so the performance of nano drilling fluid is considered in this paper. In fact, the metal nano oxide is mixed with drilling fluid in an ultrasonic vessel and the physical properties of this fluid are measured, experimentally. The electrical properties of drilling fluid have important role in the heat transfer mechanisms. The ability of drilling fluid in the transfer of heat from gimlet to drilling fluid is one of duty of this fluid. The effects of nano particles on the thermo electrical and in fact, the rheological properties of drilling fluid are investigated in this research. The experimental results show, For 30 centigrade degree, amount of electrical conductivity is changed from 220 to 286 micro Siemens per centimeter, approximately. In addition, for 40 centigrade degree, the amount of electrical conductivity is changed between the 225 to 281 micro Siemens per centi meter, approximately. Temperature variations of drilling fluid for this experiment are fixed in the 50 Centigrade degree. All of the results are fitted by mathematical polynomial. Obtained results show, the ability of distributed nano particles in the text of drilling fluid is powerful in heat transfer, totally.

E.C., Thermal Conductivity, Drilling Fluid, Concentration, High Performance

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