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Tribology Performance of Surface Texturing Plunger

1
PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
2
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
*
Authors to whom correspondence should be addressed.
Biomimetics 2019, 4(3), 54; https://doi.org/10.3390/biomimetics4030054
Received: 26 June 2019 / Revised: 1 August 2019 / Accepted: 2 August 2019 / Published: 5 August 2019
(This article belongs to the Special Issue Selected Papers from ICBE2019)
Plunger pumps are widely used in oil pumping units around the world. The water content of the wellbore is increasing along with the development progress, so the lubricating capacity of the well fluids between the plunger and barrel is decreasing correspondingly. Commonly, the substrate material of the plunger and barrel are stainless steel, and the plunger surface is usually covered with nickel-based coating. Therefore, the performance of the plunger and barrel has been affected due to poor lubrication and eccentric wear. Non-smooth surfaces have been proven to improve the tribology performance in many cases. A surface texturing plunger covered with specific dimples has been prepared by using laser surface texturing technology. The morphology of the surface texturing plunger was characterized and analyzed. The tribology performance of surface texturing plunger samples was tested using standard friction and wear test machines with oil and water lubrication, respectively. The results indicated that surface texturing could effectively reduce the coefficient of friction, and the wear resistance of the surface textured samples has been improved to some extent. View Full-Text
Keywords: tribology performance; non-smooth surface; surface texturing; plunger; pumping unit tribology performance; non-smooth surface; surface texturing; plunger; pumping unit
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Wei, S.; Shang, H.; Liao, C.; Huang, J.; Shi, B. Tribology Performance of Surface Texturing Plunger. Biomimetics 2019, 4, 54.

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