考虑井筒流动压降对合采井试油产能影响分析方法研究

Analysis Method Study on the Influence of Wellbore Flow Pressure Drop on the Productivity of Commingled Production Wells for Testing

勘探井及评价井在试油过程中,大部分井都采用单层测试求取每层产能,在合采过程中由于受到层间压力、供液能力、管柱尺寸、流体性质等因素影响,需要采用合理的计算评价分析方法来进行产能预测。以DN5井为例,建立井筒内垂直管流流动模型,采用系统分析方法对合采进行分析和研究,为开展合采试油和开发提供一种可靠的分析方法。

In the testing process of exploratory and evaluation wells,single-layer testing is mostly used to measure the productivity of each layer.It is necessary to adopt reasonable calculation,evaluation and analysis methods to predict productivity,which is impacted by such factors as interlayer pressure,fluid supply capacity,workstring size,and fluid properties during commingled production.Well DN5 is studied in this paper as an example.Commingled production was analyzed and studied by establishing a vertical pipe flow model for wellbore,and using a systematic analysis method,which provides a reliable analysis method for the well testing of commingled production and development.