【摘要】 为了研究ASP复合驱油体系在新疆砾岩储集层的静态吸附、动态损耗及两者之间的定量关系,使用了恒速压汞、X射线衍射、静态吸附、动态损耗的实验方法。结果表明:驱油剂因静电力、范德华力、氢键及与可交换金属阳离子等作用产生静态吸附,KPS、HPAM平衡吸附等温线分别遵循S、L型,Na₂CO₃吸附规律独特;驱油剂在砾岩岩心上的动态损耗机理为矿物表面吸附及砾岩微观孔喉结构束缚作用导致的滞留;驱油剂静态吸附量与动态损耗量之间线性相关,砾岩微观孔喉结构对HPAM的捕集效应更加明显。研究结果对于砾岩油藏进行ASP试验体系配方的优选具有指导意义。更多还原

【Abstract】 To study the static adsorption,dynamic consumption and the relation between these two losses of ASP compound flooding on Xinjiang conglomerate reservoir,constant velocity mercury injection,X-ray diffraction,static adsorption and dynamic consumption experiments were conducted. The results show that oil displacement agents are adsorbed by electrostatic attraction,Van der Waals’ force,hydrogen bond and exchangeable metal cations. The shapes of the equilibrium isotherm of KPS and HPAM are L and S respectively,while Na₂CO₃ has a unique shape of equilibrium isotherm. The dynamic consumption of oil displacement agents on conglomerate is caused by static adsorption and retention resulted from pore throat bounding. A linear relation between static adsorption and dynamic consumption is observed. The retention of HPAM from pore throat is much stronger. The results have guiding significance on the optimization of ASP compound flooding system on conglomerate reservoir.更多还原