聚合物凝胶颗粒调剖特性评价

基于对聚合物凝肢颗粒封堵窜流通道的机理分析，提出以弹性封堵强度和破碎封堵强度作为吸水膨胀的凝肢颗粒在油藏孔隙中封堵特性的表征参数和评价指标。根据多测点岩心模拟实验得到的封堵系数分布及其动态规律，分析了凝胶颗粒段塞在岩心中的运移特性及其对窜流通道的封堵能力。综合利用上述指标参数和动态特征，可以评价聚合物凝肢颗粒的调剖特性。

Evaluation on character of profile control by polymer gel particle

Channeling-path is defined as path in reservoir where oil displacement agent flows from injection well to production well at high speed. Based on the mechanism of plugging channeling -path by polymer gel particle, elastic plugging strength and breakup plugging strength are defined and they are taken as characteristic parameters and evaluating indexes of the plugging character of the gel particles in pores which are swelled when water adsorbing. In addition, the migration behavior and plugging capacity of the gel particle slug in cores on the channeling path were analyzed through plugging factor distribution and its dynamic rule measured in multi - point core simulation experiments. The character of the profile control by the polymer gel particles will be evaluated by means of the above parameters and dynamic character.