Based on the informatization and intelligent construction of an oilfield, this paper proposes a new method for calculating inflow performance relationship in sucker rod pump wells, which solves the limitations of current IPR curve calculation method in practical application. By analyzing the forming principle of the dynamometer card, the plate of abnormal dynamometer card is created innovatively, and the recognition model of abnormal dynamometer card based on “feature recognition” is established to ensure the accuracy of the dynamometer card. By analyzing the curvature of each point on the curve of downhole pump dynamometer card, the opening and closing points of standing valve and traveling valve are determined, and the models for calculating fluid production and bottom hole flowing pressure are established to obtain the data of fluid production and bottom hole flowing pressure of sucker rod pump wells. Finally, a calculation model of inflow performance relationship fitted with the calculated fluid production and bottom hole flowing pressure data based on genetic algorithm is established to realize calculation of oil well inflow performance relationship curve. The field application and analysis results show that the inflow performance relationship curve calculated by the model in this paper fits well with the measured data points, indicating that the calculation model has high accuracy and can provide theoretical and technical support for the field. Moreover, the real-time acquisition of dynamometer cards can provide real-time data source for this method, improve the timeliness of oil well production analysis, and help to reduce the production management costs and improve the production efficiency and benefit.

中文翻译：

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基于测功机实时监测卡的抽油杆泵井入流动态关系计算方法

针对油田信息化、智能化建设，提出一种有杆泵井入流动态关系计算新方法，解决了目前IPR曲线计算方法在实际应用中的局限性。通过分析测功卡的形成原理，创新制作了测功卡异常卡盘，建立了基于“特征识别”的测功卡异常识别模型，保证了测功卡的准确性。通过分析井下泵测功卡曲线上各点的曲率，确定了立阀和移动阀的启闭点，建立产液量和井底流动压力计算模型，获取有杆泵井产液量和井底流动压力数据。最后，基于遗传算法建立与计算出的产液量和井底流动压力数据拟合的流入动态关系计算模型，实现油井流入动态关系曲线的计算。现场应用分析结果表明，本文模型计算的入流动态关系曲线与实测数据点吻合较好，表明该计算模型精度较高，可为现场提供理论和技术支持。而且，测功机卡的实时采集可以为该方法提供实时数据源，