羟磺基甜菜碱HSBO1的油藏适用性研究

Applicability of Hydroxyl Sulfobetaine HSB01 for Reservoir

岳 普 张 帆 范慧俐 张 群 周朝晖 蔡红岩

YUE Pu ZHANG Fan FAN Hui-Li ZHANG Qun ZHOU Zhao-Hui CAI Hong-Yan

在实际油藏条件下，通过测定实验室针对目标油藏研制的羟磺基甜菜碱表面活性剂HSB01溶液与目标油藏原油间的界面张力，系统考察了表面活性剂HSB01对目标油藏的注入水、采出水及地层水的适应性、与目标油藏所用聚合物的配伍性、对目标油藏天然油砂的抗吸附性以及长期放置的稳定性。实验结果表明：甜菜碱表面活性剂HSB01对目标油藏的水质有着良好的适应性，与聚合物的配伍性良好，甜菜碱表面活性剂在0. 25~2 g/L浓度范围内，都可达到超低界面张力；经天然油砂吸附9次后1.5 g/L HSB01 +1.5 g/L FP3640D二元体系与原油间界面张力依然保持超低，抗吸附效果好；在50℃下放置90 d后，1.5 g/L HSB01 +1.5 g/L FP3640D二元体系与原油间的界面张力能够维持超低，稳定性良好。此外，羟磺基甜菜碱HSB01对目标油藏以外的另两种原油也有着良好的界面活性，适用性广。

In actual oil reservoir conditions, by measuring interfacial tension between new hydroxyl sulfobetaine surfactant designed for target oil reservoir and crude oil of target oil reservoir, the new hydroxyl sulfobetaine surfactant’s adaptability for injected water, produced water and formation water of target oil reservoir, compatibility with the polymer used in target oil reservoir, resistance to?adsorption to natural oil sands of target oil reservoir and the stability for long-term placement were investigated systematically. Experimental results indicated that the new hydroxyl sulfobetaine surfactant HSB01 had a good adaptability to water quality of actual reservoir and had a good compatibility with the polymer. When the surfactant mass fraction ranged from 0.25 g/L to 2 g/L, the interfacial tension between the HSB01 solution and the crude oil could achieve an ultra-low order of magnitude. After adsorbed by natural oil sands for 9 times or placed for 90 days at reservoir temperature of 50℃, the interfacial tension between the HSB01(1.5 g/L) /polymer(1.5 g/L) binary system and the crude oil could reach ultra-low order of magnitude. In addition, the HSB01 also had a good interfacial activity with the other two crude oil different from target oil reservoir.