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方法对比分析了低渗透油藏中水平井和垂直井布井系统的压力梯度分布，并利用启动压力梯度理论建立低渗透油藏中水平井和垂直井产量公式。目的为低渗透油藏的水平井开发提供理论依据。结果水平井布井系统可提高低渗透油田的开发水平。结论对于低渗透油藏来说，利用水平井布井系统可使渗流过程尽快地进入拟线性状态，提高驱油效率；在低渗透油田中，计算水平井和垂直井的产量时，应考虑启动压力梯度；通过改善低渗透油藏的储油物性、加大生产压差以及选择合理的井距来提高低渗透油田的单井产量
Methods The pressure gradient distribution of horizontal wells and vertical wells in low permeability reservoirs was compared and analyzed. The production formula of horizontal wells and vertical wells in low permeability reservoirs was established by using the start pressure gradient theory. The purpose is to provide a theoretical basis for the development of horizontal wells in low permeability reservoirs. Results Horizontal well distribution system can improve the development of low permeability oilfield. Conclusions For low permeability reservoirs, the horizontal well layout system can make the seepage process enter the quasi-linear state as soon as possible and improve the oil displacement efficiency. In low permeability oilfields, when calculating the production of horizontal wells and vertical wells, start-up should be considered Pressure gradient; improve single-well production in low-permeability oilfield by improving reservoir physical properties, increasing production pressure difference and selecting well spacing