水平井试井分析方法研究及应用

针对不同地层的特点和最大限度地发挥油藏的潜能，近年来提出了一些新的水平井钻井方法。为了高效开发低渗透油藏，最大限度地提高低渗透油藏的采收率，大庆油田相继在外围油田打了多口水平井，以提高油井的产量。文章针对大庆油田的地质特点，介绍了水平井与垂直井流动特性的差异，研究了大庆油田常见的底水驱及底封闭的两种油藏模型，给出了物理数学模型，进行了求解，导出了产能公式，给出了一整套水平井试井资料解释方法。并用油田实测资料进行了验证，取得了满意的解释结果，为大庆油田水平井的合理开发提供指导。

Well test analysis of the horizontal well in Daqing Oilfield

Based on the geologic structure of Daqing oilfield, this paper first introduces the flow difference between horizontal and vertical well. Then it studies two typical reservoirs in Daqing oilfield, which are bottom water drive reservoir and bottom impermeable layer reservoir. The paper constructs physical and mathematical model for these two reservoirs, find the solution of the equation, deduces the productivity equation and provides a set of well test analysis methods to interpret well test data. The approach is verified by the practical test data. And the result turns out to be satisfactory. The test analysis method will guide the development of horizontal well in Daqing oilfield.