一种二元复合体系驱油剂、制备方法及应用
By combining a double-tailed hydrophobic associative polymer with sodium lauryl alcohol polyoxyethylene ether sulfate, a strong associative network and a hydration protective layer are formed, which solves the problem of insufficient interfacial activity and emulsification ability of alkali-free binary composite oil displacement agents in high-calcium and magnesium reservoirs, and achieves a highly efficient oil displacement effect.
CN121991673BActive Publication Date: 2026-07-17DAQING YONGZHU PETROLEUM TECH DEV CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DAQING YONGZHU PETROLEUM TECH DEV CO LTD
- Filing Date
- 2026-04-10
- Publication Date
- 2026-07-17
Smart Images
Figure SMS_2
Abstract
本发明属于驱油剂技术领域，具体涉及一种二元复合体系驱油剂、制备方法及应用。二元复合体系驱油剂包括如下百分比原料：0.05‑0.15wt%月桂醇聚氧乙烯醚硫酸钠、0.3‑0.5wt%双尾型疏水缔合聚合物及盐水；双尾型疏水缔合聚合物通过二异氰酸基烷基酸烷基酯与有机胺反应制得双尾型疏水化合物，双尾型疏水化合物再通过酯交换反应接枝到共聚物上制得，共聚物聚合单体包括摩尔比为80‑90：10‑20：0.5‑3丙烯酰胺、不饱和磺酸、羟基丙烯酸酯；双尾型疏水化合物和共聚物质量比为5‑15：100。双尾疏水基团形成缔合网络，提升乳化携油能力与粘度；磺酸基、酰胺基增强亲水性及钙镁耐受性，抑制高盐下粘度损失；聚氧乙烯链段在缔合微区外形成水化保护层，实现低界面张力、强乳化携油及优异耐盐性。
Need to check novelty before this filing date? Find Prior Art