中文摘要：

为了准确计算部分射开直井的产能，并为射孔方案优化提供理论依据，将M cL eo d射孔几何模型改进为双径向流模型，应用渗流力学原理和等值渗流阻力法，分射穿污染带与未射穿污染带2种情况，得到各向同性油藏部分射开直井的产能计算方法。在此基础上，根据各向异性油藏渗流理论，将各向异性油藏变换为等价的各向同性油藏，得到各向异性油藏部分射开直井的产能计算方法。分析参数敏感性得出，当射开程度小于70％、射孔深度小于80 cm、射孔密度小于20孔／m、压实程度大于75％时，这4个参数对产能的影响很大；相位角、孔径、压实带厚度对产能的影响很小；未射穿污染带时的产能对各参数的敏感性比射穿污染带时高。实例计算表明，该方法的计算结果与表皮系数法相差约5％。研究结果表明，产能与射孔深度、射孔密度、孔径、相位角、压实带厚度、压实程度和射开程度之间均为非线性关系。

英文摘要：

To accurately calculate the productivity of partially perforated well and provide theoretical foundation for optimization of perforation scheme ,McLeod’s perforation geometric model is modified to dual radial flow model .T hen ,by considering penetrated and unpenetrated damaged zone ,productivity calcu-lation methods of partially perforated vertical well in isotropic reservoir was established based on the prin-ciple of fluid mechanics in porous medium and equivalent flowing resistance method .On the basis of this work ,the productivity calculation methods of partially perforated vertical well in anisotropic reservoir was established by transforming anisotropic reservoir into isotropic reservoir based on the principle of fluid me-chanics in anisotropic reservoir .Sensitivity analysis of the perforation parameter of partially perforated ver-tical well shows that perforated degree ,perforation length ,shot density and compaction degree have great effect on the productivity w hen the perforation has a perforated degree less than 70 percent ,perforation length less than 80 cm ,shot density less than 20 shots per meter and a compaction degree more than 75 per-cent .But perforation phasing ,perforation diameter and crushed zone thickness have little effect on the pro-ductivity .The productivity of a reservoir with penetrated damaged zone is less sensitive to reservoirs with partially penetrated damaged zone .An example is provided and the difference between corresponding re-sults of new method and skin method is about 5 percent .Results show that perforation length ,shot densi-ty ,perforation diameter ,phasing ,crushed zone thickness ,compaction degree and perforated degree have a nonlinear relationship with productivity .