Influence of Different Weighting Materials on the Wear of N80 Metal Surface
Advances in Materials
Volume 5, Issue 2, April 2016, Pages: 9-12
Received: May 10, 2016;
Accepted: May 31, 2016;
Published: Jun. 14, 2016
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Han Cheng, CNOOC Ltd., Zhanjiang, Guangdong, China
Qiu Zhengsong, College of Petroleum Engineering, University of Petroleum, Qingdao Shandong, China
Yang Zhonghan, CNOOC Ltd., Zhanjiang, Guangdong, China
Liu Xianyu, CNOOC Ltd., Zhanjiang, Guangdong, China
Yu Yi, CNOOC Ltd., Zhanjiang, Guangdong, China
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Influence of high-density drilling fluid weighted with conventional barite, micronized barite, hematite and manganese tetroxide on the wear behavior of N80 metal surface was investigated. The worn surface morphologies and roughness of the N80 metal was observed and tested respectively by scanning electron microscope and surface roughness meter tester. The wear mechanisms of different weighting materials were also discussed. It was found that the erosion rate of N80 steel worn by micronized barite is 57.8% of it worn by conventional barite, and the erosion rate of N80 steel worn by manganese tetroxide is 43.8% of it worn by hematite. The main wear mechanism of conventional barite, micronized barite, hematite and manganese tetroxide on the metal surface is abrasive wear, plowing, planning action and surface fatigue wear, under conditions of high density drilling fluid. Manganese tetroxide and micronized barite can significantly reduce the wear on the metal surface because of filling and adsorption on the concave and convex of the metal surface, especially the roughness of N80 steel surface worn by manganese tetroxide can be reduced to 50% of the hematite.
Weighting Materials, Micronized Barite, Manganese Tetroxide, Wear, High-Density Drilling Fluid
To cite this article
Influence of Different Weighting Materials on the Wear of N80 Metal Surface, Advances in Materials.
Vol. 5, No. 2,
2016, pp. 9-12.
Copyright © 2016 Authors retain the copyright of this article.
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