两种泵功图量油方法的数学模型及其应用比较  

Two Mathematical Models of Oil Yield Measurement Methods Using Pump Dynamograph and Their Application Comparison

作　　者：陆雪皎[1] 李伟伟[2] 宋明明[1] 白景彪 刘卓 范坤坤 

机构地区：[1]中国石油长庆油田公司第五采油厂,陕西榆林718615 [2]中国石油青海油田公司,甘肃敦煌736200 [3]山东科瑞股份有限公司,山东东营257100 [4]中国石油大学(华东)石油工程学院,山东青岛266580

出　　处：《石油工程建设》2014年第5期62-66,共5页Petroleum Engineering Construction

摘　　要：针对国内油田采用小站计量模式无法满足油井自动化精确量油的缺点,选择有效冲程模型和改进的液量迭代模型,采用泵功图进行产液量计算,并用MATLAB编制了一套根据泵功图计算产液量的程序。在有效冲程模型中,通过对泵功图进行预处理,建立曲率计算模型确定阀门开闭点,得到有效冲程;在改进的液量迭代模型中,将传统的液量迭代模型与有效冲程相结合,用GETDATA软件对泵功图进行预处理,并考虑漏失的影响计算产液量。依据胜利油田单级和多级螺杆泵实测数据,用两个模型分别计算产液量,结果表明改进的液量迭代模型比有效冲程模型更接近实际值。The station oilyield measurement mode applied in domestic oilfields can not meet requirements of oil well automatic and precise measurement. The refore,the effective stroke modeland the improved liquid volume iterative modelare chosen and combined with pump dynamograph,and a set of program relative to these models is prepared using MATLAB. In the effective stroke model, through pretreating the pump dynamograph and building curvature computing model,the valve opening and closing points are determined and the effective stroke is obtained. In the improved liquid volume iterative model,the conventional liquid volume iterative model and the effective stroke are combined to calculate liquid production rate in consideration of impact of dripping,and GETDATA software is used to pretreat the pump dynamograph. Based on the test data of single screw pump and multi-screw pump in Shengli Oilfield,comparison between the results of liquid production rate from the two models comes to the conclusion that the improved liquid volume iterative modelis closerto actualvalue than the effective stroke model.

关 键 词：泵功图 有效冲程 液量迭代法 

分 类 号：TE933.3[石油与天然气工程—石油机械设备]