Influence of inlet gas volume fraction on energy conversion characteristics of multistage electric submersible pump

Yan, Sina; Luo, Xingqi; Sun, Shuaihui; Zhang, Lefu; Chen, Senlin; Feng, Jianjun

doi:10.1016/j.petrol.2021.109164

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…The 40Cr steel (GB/T17107-2018) is generally used for manufacturing the shaft of an electric submersible pump (ESP) [1]. However, during a long-term operation, the shaft of the ESP is prone to wear and corrosion due to sand particles, acid liquid, poor lubrication, and other factors [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Performance of Ni/TiN Coatings Deposited by Laser Melting Deposition on 40Cr Substrates

Wang

2022

Coatings

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The current study reports the successful preparation of Ni/TiN coatings via laser melting deposition (LMD) for repairing the shaft of an electric submersible pump (ESP). The surface morphology, microstructure, phase composition, microhardness, shear strength, and wear resistance were investigated using a scanning electron microscope (SEM), X-ray diffractometer (XRD), microhardness meter, shear strength test machine, and friction and wear tester. Among the three coatings, the Ni/TiN coating deposited at 1.5 kW processed fine grains with an evenly dispersed and compact structure. The Ni/TiN coating revealed a face-centered cubic (f c c) lattice that exhibited diverse orientations due to the laser powers. The Ni/TiN coating deposited at 1 kW had the lowest average microhardness of 768 HV, while the Ni/TiN coating deposited at 1.5 kW had the highest average hardness of 843 HV. The shear displacements of the Ni/TiN coatings obtained at 1, 1.5, and 2 kW were 0.68, 0.54, and 0.61 mm, respectively. The Ni/TiN coating deposited at 1.5 kW had the lowest friction coefficient among all coatings, with an average value of only 0.44. Additionally, the Ni/TiN coating deposited at 1.5 kW exhibited the highest wear resistance. The presence of Ni, Ti, N, Cr, and Fe elements on the surface of the shaft of the ESP, indicated that the LMD technology had successfully repaired the shaft.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Performance of Ni/TiN Coatings Deposited by Laser Melting Deposition on 40Cr Substrates

Wang

2022

Coatings

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“…Electric submersible pump is the second largest oil production machinery in oil field, and its working performance directly affects crude oil production 1,2 . Electric submersible pumps' key weakness is still not suitable for lifting high gas content of liquid production 3 .…”

Section: Introductionmentioning

confidence: 99%

Rotating speed influence on internal flow characteristics of electric submersible pump

Yao¹,

Zhang²,

Liu³

et al. 2022

6th International Conference on Mechatronics and Intelligent Robotics (ICMIR2022)

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In order to study rotating speed influence on internal flow characteristics of ESP (electric submersible pump), the electric submersible pump under different rotating speed schemes are simulated. The results of the simulation show that the gas is unevenly distributed in the blade passage and mainly concentrated on the inlet side of the passage near the front cover plate as the impeller rotates. In the blade passage, the gas phase shows periodic aggregation and diffusion. When the impeller rotating speed increases, the cycle of periodic accumulation is shortened. In the meanwhile, diffusion of gas phase in the blade passage is shortened. With the gas phase concentration in the impeller decreases, the overall flow velocity in the blade passage, the inlet pressure difference, outlet pressure difference increase. With the impeller rotating speed increases, the pressure difference between two sides of blade and the fluctuation frequency of blade surface load increase gradually like it.

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Application of entropy production theory for energy losses and other investigation in pumps and turbines: A review

et al. 2022

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Influence of inlet gas volume fraction on energy conversion characteristics of multistage electric submersible pump

Cited by 8 publications

References 26 publications

Microstructure and Performance of Ni/TiN Coatings Deposited by Laser Melting Deposition on 40Cr Substrates

Microstructure and Performance of Ni/TiN Coatings Deposited by Laser Melting Deposition on 40Cr Substrates

Rotating speed influence on internal flow characteristics of electric submersible pump

Application of entropy production theory for energy losses and other investigation in pumps and turbines: A review

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