缔合聚合物驱在鲁克沁中区油藏的可行性研究

发布时间：2018-05-17 02:11

  本文选题：高盐稠油油藏 + 缔合聚合物驱　； 参考：《油田化学》2017年01期

【摘要】：针对鲁克沁中区油藏非均质性严重、水油流度比大和地层水矿化度高的特点,研究了疏水缔合聚合物AP-P8在该油藏条件下的黏度、溶解性、抗剪切性和热稳定性,考察了AP-P8的驱油性能,并在现场进行了应用。研究结果表明,配液水为注入水(矿化度约80 g/L)、温度为78℃时,AP-P8的增黏性能明显好于常规聚合物,AP-P8溶液黏度随温度升高而降低,用注入水配制的2 g/L AP-P8溶液在100℃时的黏度为64.5 mPa·s;室温下AP-P8在注入水中的溶解性较好,溶解时间为2.8 h;AP-P8抗剪切性较好,2.5 g/L AP-P8溶液剪切后的黏度保留率为54.2%。随AP-P8浓度的增加,岩心阻力系数和残余阻力系数增加,有利于提高原油的采收率;AP-P8可在水驱基础上提高稠油采收率10.2%;现场试注试验结果表明,AP-P8的注入性良好,常温配液黏度为100 mPa·s,注聚稳定压力27.5 MPa。AP-P8满足鲁克沁中区油藏条件对聚合物驱性能的要求,应用时可以直接用注入水配液。
[Abstract]:In view of the serious heterogeneity, high water / oil mobility ratio and high salinity of formation water in Lukeqin middle area, the viscosity, solubility, shear resistance and thermal stability of hydrophobically associating polymer AP-P8 in this reservoir are studied. The oil displacement performance of AP-P8 was investigated and applied in the field. The results show that the viscosity of AP-P8 is better than that of conventional polymer AP-P8 when the salinity is about 80 g 路L ~ (-1) and the temperature is 78 鈩，

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