利用功图计算液面的研究与应用

Research and application of power chart in liquid level calculation

刘燕平 李海硕 田磊

Liu Yanping Li Haishuo Tian Lei

中国石化 西北油田分公司 采油三厂, 新疆 轮台 841600

No.3 Oil Production Plant, SINOPEC Northwest Company, Luntai, Xinjiang 841600, China

从机抽井示功图形成机理、功图载荷分析入手，研究利用功图计算液面的方法，并选取塔河油田工区内的试验井，试验对比不同方法计算液面的准确度。对比得出，针对功图载荷无异常波动，工作制度、含水率稳定的机采井，利用交变载荷线性回归法计算结果准确度较高。交变载荷线性回归法求取液面的主要影响因素有载荷、工作制度及含水率，因此，载荷异常波动大、含水变化大、工作制度调整频繁及泵况异常油井，不适合应用该方法计算液面。

In this paper, the method of calculating liquid level using power chart was studied. We selected some test wells in the Tahe oilfield, and compared the accuracy of liquid level calculation with different methods. For those wells with normal power chart, stable working system and water content, alternating load linear regression method is recommended. This method can be influenced by load, working system and water content. As a result, the wells with abnormal power chart, changing water content, frequently-adjusting working system and abnormal pumping are not suitable for the alternating load linear regression method.

https://doi.org/10.11781/sysydz2017S1116