抽油泵多级防砂保护器结构参数与性能研究

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中图分类号：TE933.3 文献标志码：A doi：10.3969/j.issn.1001-3482.2025.06.010

文章编号：1001-3482（2025）06-0072-09

Abstract：In view of the sand production problem of oil wells in the field of oil extraction，the performance optimization of multi-stage sand prevention protectors is of great significance for improving the stabilityand economy of oilfield production.In this paper，byconstructing a finite element simulation model for the sand particle transportation in pipelines under intermittent flow of the reciprocating sucker rod pump，combined with the analysis of the flow field and sand particle movement，the sand particle movement mechanism was revealed，and the performance parameters of the multi Π-Π stage sand prevention protector were calculated accordingly.The engineering prediction formula was obtained.The sand storage rate showed a linear change with the diameter of the screen pipe and the number of check valves，while it showed a cubic change with the length of the screen pipe. The cleaning cycle varied to the fourth power with the diameter and length of the screen pipe，while it varied to the second power with the number of check valves.It provided theoretical and engineering guidance for the design，optimization，and application of multi-stage sand prevention protectors.

Key Words： sucker rod pump；multi -stage sand prevention; sand production in oil well; periodic intermittent flow; fluid-solid coupling

在石油开采过程中，油井出砂会导致油层或井筒内积聚大量砂粒，形成砂堵，阻碍原油的正常流动，降低油井的产量，甚至导致油井停产，对油田生产构成了严重的威胁1。（剩余8094字）