石油化工2026，Vol.55Issue(8)：1195-1203,9.DOI:10.3969/j.issn.1000-8144.2026.08.009
具有可控凹坑结构的非对称球形纳米颗粒的制备及其应用
Preparation and application of asymmetric spherical nanoparticles with controllable pit structures
摘要
Abstract
To solve the problems of poor stability and limited application of oil-based foams,asymmetric spherical nanoparticles with controllable pit structures were prepared.This study explored the morphology regulation mechanism of the nanoparticles,clarified their stabilization mechanism for oil-based foams,and verified their potential in enhanced oil recovery.The results indicate that nanoparticles etched for 5-10 d form effective pit structures,and their oleophobicity and oil-based foam stability in low-surface-tension oil phases are significantly improved compared with those of unetched nanoparticles.Nanoparticles with insufficient etching(18 h)show no performance difference from unetched ones,while over-etched nanoparticles(15 d)have an unstable Cassie-Baxter state of aggregates due to pit morphology damage,which results in reduced foam stability.Core flooding experiments reveal that gas-oil co-injection without nanoparticles results in only a quite limited improvement in oil recovery,whereas oil-based foams generated by gas-oil co-injection with nanoparticles etched for 5-10 d can effectively plug high-permeability layers and delay gas channeling under the same permeability contrast.关键词
纳米颗粒/刻蚀/接触角/油基泡沫Key words
nanoparticle/etching/contact angle/oil-based foam分类
化学化工引用本文复制引用
李根,屈永康,冉晓君,范茹婷,李朝磊,王克亮..具有可控凹坑结构的非对称球形纳米颗粒的制备及其应用[J].石油化工,2026,55(8):1195-1203,9.基金项目
国家自然科学基金项目(52304027,52474037) （52304027,52474037）
国家科技重大专项(2025ZD1406105) （2025ZD1406105）
黑龙江省自然科学基金项目(LH2024E006) （LH2024E006）
黑龙江省博士后基金资助项目(LBH-Z23038). （LBH-Z23038）
