阿拉新-二站地区S油层稠油油藏原始含油饱和度解释方法研究

THE ORIGINAL OIL SATURATION INTERPRETATION METHOD FOR HEAVY OIL RESERVOIRS IN S LAYER OF ALAXIN-ERZHAN AREA

本文针对阿拉新-二站地区S油层稠油油藏密闭取心井资料较少的问题，采用饱和度损失校正的方法对水基泥浆取心井残余油饱和度测量结果进行校正，补充了计算原始含油饱和度资料。在此基础上结合常规取心井冷冻取样资料建立了油层的原始含油饱和度解释模型，计算出了阿拉新一二站地区S油层中纯油层的原始含油饱和度；并利用相对渗透率资料计算了油水同层原始含油饱和度。结果表明，本方法计算精度可以满足储量规范的要求，满足了稠油油藏储量参数计算工作的需要。

Because there are few sealed coring data of the heavy oil reservoirs in S layer of Alaxin-Erzhan area,the residual oil saturation measurement of a water-base mud coring well is corrected with saturation loss correction and the original oil saturation data for calculation are added.Then the interpretation model for original oil saturation is established with combination of freezing sample data of conventional coring wells.The original oil saturation of oil layers and oil-water layers in the area is calculated with relative permeability data.The result indicates that accuracy of the method can meet the requirement of reserve standards and parameter calculation of heavy oil reservoirs.