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负压采油是一种十分有效的采油工艺, 其泵入口负压值的计算为该工艺十分重要的内容。从负压采油的基本原理出发, 得出了负压采油的基本计算公式, 推导出利用特征线法计算负压采油过程中泵入口处负压值的计算方法。编写了相应的计算程序, 并结合具体实例进行了计算。该方法相对于解析法具有程序编写量小, 方程更接近流体的实际流动情况, 结果更为准确等优点, 对于现场的负压采油方案设计有重要的指导意义。
Negative pressure oil production is a very effective oil recovery process, the calculation of negative pressure pump inlet value for the process is very important content. Based on the basic principle of negative pressure oil recovery, the basic calculation formula of negative pressure oil recovery is obtained, and the calculation method of negative pressure value at the inlet of pump at negative pressure recovery is deduced by the characteristic line method. The corresponding calculation program has been compiled and calculated with concrete examples. Compared with the analytic method, this method has the advantages of less programming, more realistic fluid flow, and more accurate results. It is of great significance for the design of on-site vacuum oil recovery project.