铁边城王王洼子地区长4+5油藏属于典型的低渗透油藏,对其进行了超前注水数值模拟研究。结果表明,该油藏合理的压力保持水平为115%~120%。由于油藏物性存在差异,油藏边部合理的超前注水时间为188d,合理注水量为5180m3,注水强度应该保持在2·5~2·8m3/d·m,而油藏内部合理超前注水时间为171d,注水量4870m3,合理注水强度2·3~2·6m3/d·m。 Long 4 + 5 reservoir in Wangbianzi area, Tiebian City is a typical low-permeability reservoir, and numerical simulation of its advance injection is carried out. The results show that the reservoir maintains a reasonable pressure level of 115% to 120%. Due to the difference in reservoir physical properties, the rational water injection time at the edge of the reservoir is 188 days and the water injection rate is 5180 m3. The water injection intensity should be maintained at 2.5-8.8 m3 / d · m. However, within the reservoir, For 171d, water injection volume of 4870m3, a reasonable water injection intensity of 2.3 ~ 2 · 6m3 / d · m.