Abstract A novel hydrophobic monomer, allyl dodecylphenol polyoxyethylene ether (DP), was synthesized by reacting dodecylphenol polyoxyethylene ether (DPEO) and allyl chloride. Then DP was reacted with acrylamide (AM) and acrylic acid (AA) to form the viscoelastic self-regulating agent (DPPAM). The structure, thermalstability and microstructure of DPPAM was characterized by FT-IR, 1H-NMR, elemental analysis, thermal gravimetric analysis (TGA) and scanning electron microscope (SEM). Moreover, effect of DP dosage, DPPAM and salt concentrations as well as of the temperature and shear rate on the solution viscosity was investigated. Results indicated that 0.4 mol% DP can significantly improve the viscosity of the DPPAM solution to 100.01 mPa·s, and the CAC of DPPAM was 2.3 g/L. Notably, DPPAM showed superior properties in regard to temperature-tolerance, shear-tolerance and salt-tolerance than PPAM. Core flooding test declared that DPPAM enhanced oil recovery by 17.56 %, which was much better than 5.66 % of PPAM. All these features indicated that DPPAM has a better application potential in EOR than PPAM.

中文翻译：

---

一种用于提高采收率的粘弹性自调节剂

摘要 通过十二烷基酚聚氧乙烯醚(DPEO)与烯丙基氯反应合成了一种新型疏水单体烯丙基十二烷基酚聚氧乙烯醚(DP)。然后DP与丙烯酰胺（AM）和丙烯酸（AA）反应形成粘弹性自调节剂（DPPAM）。通过FT-IR、1H-NMR、元素分析、热重分析(TGA)和扫描电子显微镜(SEM)对DPPAM的结构、热稳定性和微观结构进行了表征。此外，研究了 DP 剂量、DPPAM 和盐浓度以及温度和剪切速率对溶液粘度的影响。结果表明，0.4 mol% DP 可显着提高 DPPAM 溶液的粘度至 100.01 mPa·s，DPPAM 的 CAC 为 2.3 g/L。尤其，DPPAM 在温度耐受性、剪切耐受性和耐盐性方面表现出优于 PPAM 的性能。岩心驱油试验表明，DPPAM 提高了 17.56% 的采收率，远优于 PPAM 的 5.66%。所有这些特点表明，DPPAM 在 EOR 中比 PPAM 具有更好的应用潜力。