Issue 57

B. Wang, et alii, Frattura ed Integrità Strutturale, 57 (2021) 291-299; DOI: 10.3221/IGF-ESIS.57.21

50

Point A

Point B

40

30

20

10 Mises stress (MPa)

0

0 40 80 120 160 200 240 280 320 360 400 440 480

Time (s)

Figure 8: The Von Mises stress variation with time at points A and B (stroke period: 4 min).

C ONCLUSION

I

n the present study, the technical feature of beam-type pumping unit with dynamic tracking balance is analyzed. When compared with the conventional beam-type pumping unit, the pumping unit with dynamic tracking balance has a better balance effect and production efficiency. Benefit from the dynamic tracking balance design, it has a more regular load-displacement curve and effectively reduce the load fluctuation in the operation process. According to the dynamic analysis, the dynamic stress variations of the key components of the beam-type pumping unit with dynamic tracking balance are obtained. The results show that the maximum in the beam and connecting rod are 36.96 MPa and 27.83 MPa, and the structural design of the pumping unit with dynamic tracking balance is reasonable and efficient.

A CKNOWLEDGMENTS

T

he research work is supported by the Natural Science Foundation of Shandong Province (No. ZR2020ME092), the National Natural Science Foundation of China (No.51404286), and the Fundamental Research Funds for the Central Universities of China (No.20CX02308A).

R EFERENCES

[1] Feng, Z.M., Guo, C.H., Zhang, D.S., Cui, W., Tan, C.D., Xu, X.F., Zhang, Y. (2020). Variable speed drive optimization model and analysis of comprehensive performance of beam pumping unit. Journal of Petroleum Science and Engineering, 191, pp.107155. DOI: 10.1016/j.petrol.2020.107155. [2] Lu, J. M, He, J.P, Mao, C.X, Wu, W.W., Wang, D., Lee, W.J. (2014). Design and implementation of a dual PWM frequency converter used in beam pumping unit for energy saving. IEEE Transactions on Industry Applications, 50(5), pp.2948 – 2956. DOI: 10.1109/TIA.2014.2304621. [3] Langbauer C. (2018). Sucker rod pumping system optimisation based on a novel finite elements analysis. SPE-192475 MS, SPE Middle East Artificial Lift Conference and Exhibition, pp.1 – 13. DOI: 10.2118/192475-MS. [4] Kochtik, D., Langbauer, C. (2018). Volumetric efficiency evaluation of sucker-rod-pumping applications performed on a pump testing facility. SPE-192454-MS. SPE Middle East Artificial Lift Conference and Exhibition, pp.1 – 11. DOI: 10.2118/192454-MS.

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