蜡和沥青质的沉积是目前国内外油气开采研究中的热点和难点，石蜡的沉积一直伴随着油气生产的各个环节，它会损伤井眼，堵塞输油管道，降低采收率。定性地分析了石蜡沉积对储层的影响，定量研究了石蜡沉积后储层的损伤情况，利用岩石毛细管模型描述了地层孔隙空间，并用比面、孔隙度和渗透率等的相互关系推导出了石蜡沉积量与地层参数的变化关系式，为石蜡沉积后的油气开发动态预测提供了一种理论依据。

The precipitation of paraffin, which is hard to avoid, will cause a lot of damage during the whole oil-gas production segments, such as wellbore damaging, pipeline blocking, recovery ratio decreasing etc. So, this paper analyzed the effects after the precipitation of paraffin qualitatively and quantitatively. Using rock-capillary model to simulate the formation pore volume, and deducts the variation between paraffin precipitation and formation parameters using the correlation among surface area to volume ratio, porosity and permeability etc. We provide a theoretical foundation for oil-gas developing dynamic prediction after the precipitation of paraffin.