高浓聚合物驱注入方式数值模拟研究

发布时间：2018-05-16 16:32

本文选题：数值模拟 + 高浓聚合物驱　；参考：《东北石油大学》2016年硕士论文

【摘要】：本文利用X13高浓度聚合物驱试验区静态数据,结合精细沉积相数字化研究结果,使用Petrel三维地质建模软件建立相应的构造模型和属性模型。应用Eclipse数值模拟软件对所建立地质模型进行高浓度聚驱试验区水驱阶段历史拟合,拟合的指标包括区块和单井的产油、含水、产液和采出程度等指标,并预测了该区块含水至98%时的注水量、产液量、产油量、采收率等指标。在水驱阶段历史拟合的基础上,开展高浓度聚合物驱数值模拟研究,分别研究了聚合物单一段塞浓度变化对提高采收率的影响,多段塞浓度变化对提高采收率的影响,分层注入对提高采收率的影响,分质注入对提高采收率的影响,对各方案进行开发效果预测与对比,从而确定试验区块高浓聚合物驱的最佳注入方式。发现多段塞组合注入方式中第一段塞的设置尤为重要,当第一段塞占整体的1/3时,驱油效果最好;分层注聚效果好于笼统注聚,最佳分层时机的选择应该在含水下降期。最佳聚驱方案为:采用2500万高分子聚合物体系,浓度为1800mg/L;在含水下降期开始进行多段塞注入方式分层注入,高浓度前置段塞占整体段塞的1/3为最种提高采收率最佳。本研究为高浓度聚驱矿场试验提供理论指导。
[Abstract]:In this paper, based on the static data of X13 high concentration polymer flooding test area, combined with the digital research results of fine sedimentary facies, the corresponding structural model and attribute model are established by using Petrel 3D geological modeling software. Using the Eclipse numerical simulation software, the history fitting of the water flooding stage in the high concentration polymer flooding experimental area is fitted to the established geological model, and the fitting is fitted. The indexes include the oil production, water cut, production and recovery of the block and single well, and forecast the water injection, liquid production, oil production and recovery of the block when the block is water to 98%. On the basis of the historical fitting of the water flooding stage, the numerical simulation of high concentration polymer flooding is carried out, and the change of the single slug concentration change of the polymer is studied. In order to improve the recovery, the influence of the change of the concentration of multi slug on the oil recovery, the influence of the stratified injection on the oil recovery, the effect of the injection on the recovery rate, the prediction and comparison of the development effect of each scheme, and the optimum injection mode of the high concentration polymer flooding in the test block. The setting of the first slug is particularly important. When the first slug takes up the whole 1/3, the oil displacement effect is the best. The effect of the stratification is better than that of the general injection. The optimum stratification time should be in the water cut period. The best polymer flooding scheme is that the 25 million polymer system is used, the concentration is 1800mg/L, and the multi slug begins at the water cut stage. This study provides the theoretical guidance for high concentration polymer flooding field test. The 1/3 of high concentration pre slug is the best to improve the recovery.

【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TE357.46

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