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Mathematical Modeling of Fluid Flow to Unconventional Oil Wells With Radial Fractures and Its Testing With Field Data

机译:用径向骨折与非传统油井流体流动的数学建模及其与现场数据的测试

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Radial fractures are created in unconventional gas and oil reservoirs in modern well stimulation operations such as hydraulic refracturing (HRF), explosive fracturing (EF), and high energy gas fracturing (HEGF). This paper presents a mathematical model to describe fluid flow from reservoir through radial fractures to wellbore. The model can be applied to analyzing angles between radial fractures. Field case studies were carried out with the model using pressure transient data from three typical HRF wells in a lower-permeability reservoir. The studies show a good correlation between observed well performance and model-interpreted fracture angle. The well with the highest productivity improvement by the HRF corresponds to the interpreted perpendicular fractures, while the well with the lowest productivity improvement corresponds to the interpreted conditions where the second fracture is much shorter than the first one or where there created two merged/parallel fractures. Result of the case studies of a tight sand reservoir supports the analytical model.
机译:在现代良好刺激操作中的非传统气体和储油液中产生径向骨折,如液压耐压(HRF),爆炸性压裂(EF)和高能量气体压裂(HEGF)。本文介绍了一种数学模型,以描述通过径向骨折到井筒的流体流动。该模型可以应用于分析径向骨折之间的角度。使用来自较低渗透储存器中的三种典型HRF井的压力瞬变数据进行现场案例研究。研究表明,观察到的井性能与模型解释的裂缝角之间存在良好的相关性。 HRF的最高生产率改善的良好对应于解释的垂直骨折,而具有最低生产率改善的良好良好的良好涉及的解释条件,其中第二裂缝比第一个或那些合并/平行骨折的位置短。紧身砂储层的案例研究的结果支持分析模型。

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