ASP复合驱用烷基苯磺酸盐表面活性剂的合成

Synthesis of alkylbenzene sulfonate surfactants used for ASP combination flooding

以重烷基苯为主要原料,以SO3为磺化剂,合成ASP三元复合驱用烷基苯磺酸盐表面活性剂。探讨了原料组成、反应条件等因素对烷基苯磺酸盐产品性能的影响,研究了烷基苯磺酸盐表面活性剂的界面活性及稳定性。在室内合成研究的基础上进行了工业放大试验,工业试验合成产品界面活性优良,其ASP复合体系驱油效率比水驱驱油效率提高20％以上。

Synthesis of alkylbenzene sulfonate surfactant using heavy-alkylbenzene as raw materials and SO3 as sulphonating agents are introduced. Many factors affecting the performance of alkylbenzene sulfonate surfactant such as component of raw materials, reaction temperature and molar rate of raw materials on sulphonating reaction were discussed. Based on laboratorial investigations, scale-up test is conducted. The core displacement test of ASP combination flooding in laboratory shows that the displacement efficiency of ASP flooding with alkylbenzene sulfonate surfactant is 20% higher than that of the conventional waterfooding.