ISSN 1673-8217 CN 41-1388/TE
主管:中国石油化工集团有限公司 主办:中国石油化工股份有限公司河南油田分公司
刘凡, 吴学林, 周文胜, 王凯. 2020: 考虑聚合物非牛顿性和渗流附加阻力的海上油田早期注聚效果评价方法. 石油地质与工程, 34(05): 83-88.
引用本文: 刘凡, 吴学林, 周文胜, 王凯. 2020: 考虑聚合物非牛顿性和渗流附加阻力的海上油田早期注聚效果评价方法. 石油地质与工程, 34(05): 83-88.
LIU Fan, WU Xuelin, ZHOU Wensheng, WANG Kai. 2020: Evaluation method of early polymer injection effect in offshore oilfields considering nonNewtonian behavior of polymer and additional seepage resistance. Petroleum Geology and Engineering, 34(05): 83-88.
Citation: LIU Fan, WU Xuelin, ZHOU Wensheng, WANG Kai. 2020: Evaluation method of early polymer injection effect in offshore oilfields considering nonNewtonian behavior of polymer and additional seepage resistance. Petroleum Geology and Engineering, 34(05): 83-88.

考虑聚合物非牛顿性和渗流附加阻力的海上油田早期注聚效果评价方法

Evaluation method of early polymer injection effect in offshore oilfields considering nonNewtonian behavior of polymer and additional seepage resistance

  • 摘要: 海上油田早期聚合物驱注聚时间早,水驱阶段短,传统霍尔曲线无法进行早期聚合物驱有效性评价。根据渗流力学理论,在考虑聚合物溶液的非牛顿性、渗流附加阻力的基础上,建立了适合评价早期注聚效果的改进霍尔曲线。利用现场数据,针对注聚井绘制改进霍尔曲线图版,并依据图版中曲线的斜率和截距,求解出注聚任意时刻地下聚合物溶液的流态指数、波及范围内的平均有效工作黏度、流动系数、阻力系数等评价指标。理论计算结果经实验验证,结果可靠,从而为海上油田早期注聚效果评价提供了依据。

     

    Abstract: Due to the early polymer flooding time and short water flooding stage in offshore oil fields, traditional hall curve cannot evaluate the effectiveness of early polymer flooding. According to the seepage mechanism, considering the non-Newtonian behavior of polymer solution and the additional seepage resistance, an improved Hall Curve suitable for evaluating the early polymer injection effect is established. According to the slope and intercept of improved Hall curve which was drawn up using practical data of an injection well, the flow behavior index, the average effective viscosity within polymer-swept portion, the flow coefficient and the resistant coefficient of underground polymer solution at any time could be calculated. It can be used to evaluate the underground fluid changes and the effectiveness of early polymer flooding. The theoretical calculation results are verified by experiments, and the results are reliable, which provides a basis for the evaluation of early polymer injection effect in offshore oil fields.

     

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