2026/01/01 by X. Zhang, Haiyan Lv, Xiaoyong Wen +3 · 1 voice
Engineering · #Drilling and Well Engineering #Enhanced Oil Recovery Techniques #Grouting, Rheology, and Soil Mechanics
paper · doi:10.1515/epoly-2025-0034
openalex publication_date 2026/01/01 · openalex created_date 2026/02/02 · openalex updated_date 2026/07/22
Abstract This paper presents the preparation of a novel waterproof-locking nanoemulsion, synthesized using 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt, acrylamide, butyl acrylate, and methyl methacrylate as raw materials via one-pot free radical polymerization. Its comprehensive performance was evaluated through surface/interfacial tension tests, core self-priming tests and core displacement tests. The results demonstrate its effectiveness in reducing the surface tension of aqueous solutions, the capillary force of cores, and the water saturation of cores. When the nanoemulsion with a mass fraction greater than 1.5 % is used for core displacement, the water lock damage rate can be reduced by 59.62 %. The clean fracturing fluid, prepared with commercial 703C, exhibits excellent sand-carrying capability and shear resistance, significantly reducing water lock damage to cores. These findings suggest that the novel nanoemulsion waterproof-locking agent effectively mitigates water lock impact on oil and gas development, making it a promising candidate for enhancing oil and gas recovery processes.