因此，在进行低渗透油藏垂直裂缝井产能分析时，必须考虑启动压力梯度的影响。
Therefore, the impact of starting pressure gradient must be considered when analyzing the productivity of vertical fracture well in low permeability reservoir.
针对油田特定注采方式下的垂直裂缝井，建立了矩形均质油藏混合边界垂直裂缝试井数学模型。
The mathematical model for well testing is established for mixed boundary in rectangle reservoirs with vertical fractures.
压裂水平井的渗流过程较之水平井及垂直裂缝井更复杂，其压力动态特征与水平井存在较大差异。
Flow process of fractured horizontal well is more complicated than horizontal well and vertical fractured well, and its pressure dynamic features have much difference with horizontal well.
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