华北油田的赵１０８断块属稠油、高含硫油藏，油藏非均质性严重。以造纸废液为基本原料，引入亲水和亲油基团，还引入抗硫基团，制成ＰＳ驱油剂。实验了赵１０８块原油与ＰＳ剂水溶液之间的界面张力，ＰＳ剂浓度从００５％增至１％，界面张力由１３９１ｍＮ／ｍ降至６８３ｍＮ／ｍ；当ＰＳ剂浓度达到２％时，原油乳化，几乎不形成油水界面，界面张力达７５×１０－５ｍＮ／ｍ超低点。赵１０８块原油与浓度为１％的ＰＳ剂混合时，混合液粘度随二者的体积比（Ｖｏ∶ＶＰＳ）变化而变化，当Ｖｏ∶ＶＰＳ小于１∶４时，混合液粘度比原油粘度还高，但当此体积比达１∶９时，混合液粘度为２１０ｍＰａ·ｓ，是原油粘度的三分之一。室内驱替实验表明：ＰＳ剂驱可提高采收率１０％；注入时机以水驱至含水为９６％时再注入ＰＳ剂为最好 The Zhao 108 fault block in Huabei Oilfield is a heavy oil and high-sulfur reservoir with serious reservoir heterogeneity. Papermaking wastewater as the basic raw material, the introduction of hydrophilic and lipophilic groups, but also the introduction of anti-sulfur groups, made of PS flooding agent. The interfacial tension between crude oil of Zhao 108 and PS solution was tested. The concentration of PS agent increased from 005% to 1% and the interfacial tension decreased from 1391 mN / m to 683 mN / m. When the concentration of PS agent reached 2%, the crude oil emulsifies, almost no oil-water interface, the interfacial tension reaches 7  5 × 10-5mN / m ultra-low point. Zhao 108 crude oil and the concentration of 1% PS agent mixture, the viscosity of the mixture with the volume ratio (Vo: VPS) changes, when Vo: VPS less than 1: 4, the viscosity of the mixture than the crude oil viscosity High, but when the volume ratio of 1: 9, the viscosity of the mixture is 21  0mPa · s, is one-third of the viscosity of crude oil. The experiment of indoor flooding showed that PS flooding could increase oil recovery by 10%, and injection timing was the best when injecting PS with water flooding to 96% water