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Keywords

Rock cutting, temperature, Polycrystalline Diamond Compact (PDC), rotational speed, depth of cut

Document Type

Research Article

Abstract

The usage of polycrystalline diamond compact (PDC) drill bit has significantly increased in the petroleum industry due to its high rate of penetration and long life. However, it is becoming increasingly difficult to ignore the temperature effect to PDC bit, specifically its cutter during the drilling operation. The temperature causes the degradation of the PDC cutter by reducing its lifespan. A thorough understanding of factors that affect the temperature of a PDC cutter is crucial in predicting the optimum cutting parameters. Hence, the objective of this study is to evaluate the effect of cutting parameters on the temperature of a single PDC cutter in rock cutting. In this study, a rock cutting experiment by using a lathe machine tested on a single PDC cutter. The parameters involved rotational speed and depth of cut. The temperature was measured using an infrared thermographic camera, FLIR T640 and the spot measurement to pinpoint the temperature readings at the tooltip of PDC cutter. As a result, the depth of cut had more significant influence on the temperature when measured over a range of 16 levels as the temperature increases in a linear trend with increasing depth of cut as well as the high correlation of the plot (R2=0.98). However, tests for rotational speed showed less significant influence on the temperature when measured over a range of four levels where the percentage of error of the temperature for each rotational speed was less than 10%. To conclude, only the depth of cut has a significant effect on the temperature of a single PDC cutter.

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Publication Date

31-1-2020

First Page

55

Last Page

63

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