An assessment of the potential of polymer flooding at an oil field in Western Siberia

D. N. Zolnikov
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Abstract

   The operational object under study has a high current water-cut and is at the final stage of development.   The aim of the study is to assess the potential for polymer flooding at the object X of the deposit C through hydrodynamic calculations.   Hydrodynamic modeling is performed on a synthetic model cut from a sector model of the reservoir. This model meets the criteria for selecting sites, corresponds to the parameters of a full-scale model. However, it is more detailed, which is why it was chosen to substantiate the effectiveness of polymer flooding. The model specifies the actual well location, which is in the most characteristic zone of the reservoir with the actual development system. The results of the hydrodynamic calculations demonstrated the technological efficiency of polymer flooding at the object X. The increase in the oil recovery factor was 1.85 %. Further plans include further laboratory studies of polymer solution properties, an economic assessment to select the optimal concentration and volume of polymer solution injection, and a decision on conducting pilot work.
西西伯利亚西部一个油田的聚合物淹没潜力评估
所研究的作业对象具有较高的水流断面,处于开发的最后阶段。 研究的目的是通过流体力学计算,评估聚合物淹没矿床 C 的 X 对象的可能性。 水动力建模是在一个从水库扇形模型中切割出来的合成模型上进行的。该模型符合选址标准,与全尺寸模型的参数一致。不过,它更为详细,这也是选择它来证实聚合物淹没的有效性的原因。该模型指定了实际的井位,即实际开发系统中储层最具特征的区域。流体力学计算的结果表明,聚合物注水在 X 对象处的技术效率很高,采油系数提高了 1.85%。进一步的计划包括对聚合物溶液特性进行进一步的实验室研究,进行经济评估以选择最佳的聚合物溶液注入浓度和注入量,以及决定是否进行试点工作。
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