耐温抗盐超低界面张力泡沫体系的研究  

Research of Heat-resistant and Salt-tolerant Ultralow Interfacial Tension Foaming System

作　　者：王军志[1] 

机构地区：[1]胜利油田地质科学研究院采收率试验室,东营257015

出　　处：《精细石油化工进展》2008年第6期11-15,共5页Advances in Fine Petrochemicals

摘　　要：通过对多种泡沫剂的起泡能力和稳定性等进行分析,试验筛选出界面张力达到10^(-3)mN/m以下的超低界面张力泡沫体系,其由DP4磺酸盐阴子表面活性剂和6~#甜菜碱两性表面活性剂组成。性能评价表明,该体系具有较好的泡沫性能,较强的抗盐能力、抗二价阳离子能力和抗老化能力,加入MO 4000聚合物后能增强泡沫体系的稳定性。单管驱油试验表明,超低界面张力泡沫复合驱比聚合物驱具有更强的封堵调剖能力,大大扩大波及体积。双管驱油试驱表明,聚合物驱后再注入此泡沫体系,综合采收率提高了16.65%。An ultralow interfacial tension foaming system which interfacial tension could be lower than 10^-3 mN/m was screened out on the basis of the analysis to the latherability and stability of several foamable compositions. The system was composed of sulfonate anionic surfactant DP4 and No. 6 betaine zwitterionic surfac- tant. The result of the performance evaluation showed that system had good foam performance, salt tolerance, bivalent cation resistance, and anti - aging capacity. The stability of the foaming system was improved by adding polymer MO 4000. The ultralow interfacial tension foaming system combination flooding ger plugging and profile controlling capacity and a bigger swept volume than polymer flooding flooding showed a stronin single - tube test. The comprehensive recovery was enhanced 16.65% by injecting the system after polymer flooding in double -tube flooding test.

关 键 词：泡沫体系 泡沫驱油 耐温抗盐 超低界面张力 表面活性剂 

分 类 号：TE39[石油与天然气工程—油气田开发工程]