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本文根据阀式泵的结构特点及工作原理,采用文献[1、2]的方法和假设条件,推导了阀式泵游动阀开启压力、悬点最小载荷等一些基本理论公式,阐明了该泵减小气体干扰、防止气锁、减小下行阻力、增加泵的有效冲程和充满度,改善整个抽汲系统工作条件的理论依据,并与常规泵做了分析对比和试验验证,表明该泵即使在较低沉没度时也适用于一定条件下的含气油井、稠油井和深抽等油井。
Based on the structural characteristics and working principle of the valve pump, some basic theoretical formulas of valve opening pressure and minimum load of the valve are deduced based on the methods and assumptions in [1] and [2] Reduce gas interference, prevent air lock, reduce the drag, increase the pump effective stroke and fullness, improve the working conditions of the entire pumping system theoretical basis, and compared with the conventional pump analysis and experimental verification that the pump even if In the case of lower submergence also applies to certain conditions, gas wells, heavy oil wells and deep pumping wells.