The experimental results showed that OCS surfactant/polymer binary system was a high efficiency oil displacement agent and it could improve oil recovery further after polymer flooding.

• 结果表明,OCS表面活性剂／聚合物二元体系是一种高效驱油剂,聚合物驱后利用OCS表面活性剂／聚合物二元体系可以进一步提高原油采收率。