论文部分内容阅读
综合考虑剩余油饱和度、厚度、渗透率、孔隙度、相带、原始含油饱和度、注水井距离等7个因素,利用模糊综合评价方法,以大庆油田北一二排西块为例,计算了该区块8个沉积聚驱后剩余油潜力,并分析聚驱后剩余油潜力分布特征.结果表明,聚驱后仍有比较大的剩余油潜力;聚驱后剩余油潜力主要集中在高渗透、厚度较大、剩余油饱和度较高、河道砂等高级别沉积相带的区域;聚驱后在潜力值为0～0.2区间内的剩余油储量很小,潜力值为0.4～0.6区间内的剩余油储量最大,而潜力值为0.6～0.8区间内剩余油储量次之.
Considering seven factors such as remaining oil saturation, thickness, permeability, porosity, facies belt, original oil saturation, water injection well distance and so on, by using fuzzy comprehensive evaluation method, The potential of remaining oil after 8 flooding and flooding in this block was analyzed and the potential distribution characteristics of remaining oil after flooding were analyzed.The results showed that there was still a great potential for remaining oil after flooding and the remaining oil potential was mainly concentrated in high Permeability, high thickness, high residual oil saturation, channel sand and other high-level sedimentary facies zone. After the flooding, the remaining oil reserves in the potential range of 0 ~ 0.2 are very small, with a potential of 0.4-0.6 The remaining oil reserves within the largest, while the potential value of 0.6 to 0.8 range of remaining oil reserves followed.