低渗透油田IPR曲线与合理井底压力的确定

低渗透油田开发过程中,由于启动压力梯度的存在,低渗透油藏流体渗流过程变成非达西渗流,通过建立数学模型,求解IPR曲线。给出了油井最低允许流动压力的计算公式,对于低渗透油藏的开发具有指导意义。

In the development process of low permeability oil field, because of existing starting pressure gradient, the process of low permeability reservoir fluid flow changed into a process of non-- Darcy flow, we established mathematical models to solve IPR curves. The formula for calculating the minimum allowable flowing pressure was given in this paper. This paper also provided theoretical instructions for the development of low permeability oil field.