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Effects of nanocomposite polymer flooding on Egyptian crude oil recovery
Journal of Petroleum Exploration and Production Technology ( IF 2.4 ) Pub Date : 2020-08-18 , DOI: 10.1007/s13202-020-00961-x
M. E. Helmi , M. Abu El Ela , S. M. Desouky , M. H. Sayyouh

In this work, a laboratory study of enhanced oil recovery (EOR) was carried out using Egyptian crude oil of 37°API extracted from a reservoir in the Western Desert to identify the optimum conditions for the application of locally prepared nanocomposite polymer flooding under harsh reservoir condition. In contrary to the other studies, we tested the ability of nanocomposite polymer where nanoparticles are involved in the polymer matrix during polymerization process. Measurements of viscosity and shear rate of several solutions were taken. Displacement runs were conducted at different conditions of nanocomposite polymer salinities (10,000, 20,000, 30,000, 40,000, 50,000, 60,000 and 65,000 ppm), concentrations (1, 1.5, 2, 2.5, 3, 3.5 and 4 g/L) and slug sizes (0.2, 0.4, 0.6 and 0.8 PV). A linear sandpack (length of 62.5 cm and diameter of 2″) was prepared and wrapped with thermal jacket to simulate several reservoir temperatures. It was filled by selected sand size to produce linear sandpack model with reasonable porosity (22%) and permeability (129–157 mD) values. The model was used to perform several displacements runs for waterflooding and nanocomposite polymer flooding. The results of the flood runs are analyzed using the water–oil relative permeability curves. The measurements of the solutions properties showed that the critical concentration of the used nanocomposite polymer in the solution is 2 g/L. Also, it was observed that the used nanocomposite polymer solution could withstand a salinity of 60,000 ppm. As a result of the flooding, it was found that the optimum economical slug size of the used nanocomposite polymer is 0.4 PV at reservoir temperature of 40 °C. The results indicated also that the used nanocomposite polymer could withstand a reservoir temperature of 90 °C. The water–oil relative permeability curves showed an enhancement of oil relative permeability and a decrease in the water relative permeability using nanocomposite polymer over waterflooding. The cost of the used nanocomposite polymer with a concentration of 2 g/L and slug size of 0.4 PV is 0.626 $ for each barrel of the incremental oil recovery. Based on the results of this work, it is clear that involving nanoparticles such as silica in the polymer matrix composition improves its properties, thermal and salinity resistivity. Such study is an original contribution to carry out successful nanocomposite polymer EOR projects.



中文翻译:

纳米复合聚合物驱对埃及原油采收率的影响

在这项工作中,使用从西部沙漠的一个储层中提取的37°API的埃及原油进行了提高采收率(EOR)的实验室研究,以确定在恶劣的储层中应用本地制备的纳米复合聚合物驱油的最佳条件。健康)状况。与其他研究相反,我们测试了纳米复合聚合物的能力,其中纳米颗粒在聚合过程中参与了聚合物基质。测量了几种溶液的粘度和剪切速率。在不同条件下进行纳米复合聚合物盐度(10,000、20,000、30,000、40,000、50,000、50,000、60,000和65,000 ppm),浓度(1、1.5、2、2.5、3、3.5和4 g / L)和团块尺寸的置换实验(0.2、0.4、0.6和0.8 PV)。线性沙包(长度为62。准备5厘米(直径2“)的直径并用热套包裹,以模拟几个储层温度。用选定的砂子尺寸填充它,以产生具有合理孔隙率(22%)和渗透率(129–157 mD)值的线性沙堆模型。该模型用于执行几次驱油作业和纳米复合聚合物驱油作业。使用水油相对渗透率曲线分析了洪水的结果。溶液性质的测量表明,溶液中使用的纳米复合聚合物的临界浓度为2 g / L。另外,观察到所用的纳米复合聚合物溶液可以承受60,000ppm的盐度。水淹的结果是,发现所用纳米复合聚合物的最佳经济塞料尺寸为0。在40°C的储层温度下为4 PV。结果还表明,所用的纳米复合聚合物可承受90°C的储层温度。水-油相对渗透率曲线显示,与水驱相比,使用纳米复合聚合物提高了油的相对渗透率,并降低了水的相对渗透率。对于每桶增量采油量,浓度为2 g / L的塞子尺寸为0.4 PV的用过的纳米复合聚合物的成本为0.626美元。根据这项工作的结果,很明显,在聚合物基质组合物中加入纳米颗粒(如二氧化硅)可以改善其性能,耐热性和耐盐度。这项研究是成功完成纳米复合聚合物EOR项目的原创性贡献。结果还表明,所用的纳米复合聚合物可承受90°C的储层温度。水-油相对渗透率曲线显示,与水驱相比,使用纳米复合聚合物提高了油的相对渗透率,并降低了水的相对渗透率。对于每桶增量采油量,浓度为2 g / L的塞子尺寸为0.4 PV的用过的纳米复合聚合物的成本为0.626美元。根据这项工作的结果,很明显,在聚合物基质组合物中加入纳米颗粒(如二氧化硅)可以改善其性能,耐热性和耐盐度。这项研究是成功开展纳米复合聚合物EOR项目的原创性贡献。结果还表明,所用的纳米复合聚合物可承受90°C的储层温度。水-油相对渗透率曲线显示,与水驱相比,使用纳米复合聚合物提高了油的相对渗透率,并降低了水的相对渗透率。对于每桶增量采油量,浓度为2 g / L的塞子尺寸为0.4 PV的用过的纳米复合聚合物的成本为0.626美元。根据这项工作的结果,很明显,在聚合物基质组合物中加入纳米颗粒(如二氧化硅)可以改善其性能,耐热性和耐盐度。这项研究是成功开展纳米复合聚合物EOR项目的原创性贡献。水-油相对渗透率曲线显示,与水驱相比,使用纳米复合聚合物提高了油的相对渗透率,并降低了水的相对渗透率。对于每桶增量采油量,浓度为2 g / L的塞子尺寸为0.4 PV的用过的纳米复合聚合物的成本为0.626美元。根据这项工作的结果,很明显,在聚合物基质组合物中加入纳米颗粒(如二氧化硅)可以改善其性能,耐热性和耐盐度。这项研究是成功开展纳米复合聚合物EOR项目的原创性贡献。水-油相对渗透率曲线显示,与水驱相比,使用纳米复合聚合物提高了油的相对渗透率,并降低了水的相对渗透率。对于每桶增量采油量,浓度为2 g / L的塞子尺寸为0.4 PV的用过的纳米复合聚合物的成本为0.626美元。根据这项工作的结果,很明显,在聚合物基质组合物中加入纳米颗粒(如二氧化硅)可以改善其性能,耐热性和耐盐度。这项研究是成功完成纳米复合聚合物EOR项目的原创性贡献。每桶增量采油量为626美元。根据这项工作的结果,很明显,在聚合物基质组合物中加入纳米颗粒(如二氧化硅)可以改善其性能,耐热性和耐盐度。这项研究是成功开展纳米复合聚合物EOR项目的原创性贡献。每桶增量采油量为626美元。根据这项工作的结果,很明显,在聚合物基质组合物中加入纳米颗粒(如二氧化硅)可以改善其性能,耐热性和耐盐度。这项研究是成功开展纳米复合聚合物EOR项目的原创性贡献。

更新日期:2020-08-18
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