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采用复合甘油配制成5种不同粘度的实验液体，分别模拟稀油和稠油，同时选择7种上下种程速比，在自行研制的抽油机井泵效模拟实验装置中，实验研究了上下冲程速比对抽油系统泵效的影响。从研究上下冲程速比对抽油泵漏失量的影响出发，建立了相应的数学模型。室内实验和现场试验的结果表明，在冲决基本相同的条件下，随着上下冲程速比的提高，产液量增加，泵效提高，能耗降低。当上下冲程速比υr＞1时，不但能够提高稠油井更能提高稀油井的泵效。考虑到抽油系统的使用寿命，上下冲程速比不宜调得太高，一般以υr≤2为宜。
Five kinds of experimental liquids with different viscosities were prepared by using compound glycerin. Simultaneously, thin oil and heavy oil were simulated respectively. Seven kinds of upper and lower speed ratios were selected at the same time. In the self-developed pumping experiment simulation system, Than on the pumping system pumping effect. Based on the study of the influence of upper and lower stroke speed ratio on pump leakage, a mathematical model was established. The results of laboratory experiments and field tests show that with the same flushing conditions, as the up-down stroke speed ratio increases, the amount of fluid production increases, the pumping efficiency increases, and the energy consumption decreases. When the up and down stroke speed ratio υr> 1, not only can improve the thick oil well more to improve the pumping efficiency of thin oil wells. Taking into account the service life of pumping system, up and down stroke speed ratio should not be adjusted too high, generally υr ≤ 2 is appropriate.