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地层厚度、倾斜和地层的各向异性等均能使地层流体在流动过程中的流线分布发生变形。据此,提出了一种电缆地层测试时由流线分布导出的流体流动新模型。将常规计算的稳态压降、模拟出的各向异性压降与各向同性压降等所导出的渗透率值与井壁取心值进行了比较,结果表明,各向异性压降模拟的渗透率值误差在-5.0%~7.5%之间,而常规计算的渗透率值误差则在-15%~32%之间,各向异性模拟的精度要比常规计算量的精度高得多。
Stratum thickness, slope and formation anisotropy can make formation fluid streamline distribution in the process of deformation. Based on this, a new model of fluid flow derived from streamline distribution during cable formation testing is proposed. Comparing the steady-state pressure drop, the simulated anisotropy pressure drop and the isotropic pressure drop with the calculated values of wellbore wall centerline permeability, the results show that the anisotropic pressure drop simulation The permeability error is between -5.0% and 7.5%, while the conventional calculation of the permeability error is between -15% and 32%. The accuracy of the anisotropic simulation is better than that of the conventional calculation Much higher.