摘要：In deep-water oil-based multiphase systems, anti-agglomerants (AAs) disperse hydrate particles into slurries, providing a promising strategy for plugging prevention. While AAs are intended to inhibit particle agglomeration, their influence on hydrate growth remains insufficiently studied, and the presence of wax in deep-water oil and gas reservoirs may further complicate this process through interfacial interactions. In this work, the impact mechanisms of AAs and wax molecules on methane hydrate growth in the oil-water system were investigated through micro-nanoscale simulations. In wax-free systems, a small amount of AAs markedly increased hydrate formation and growth rate, whereas excessive AAs diminished this effect. When wax coexisted with a small amount of AAs, the hydrate growth rate was accelerated further, but the overall hydrate formation was slightly reduced compared with small-AA wax-free system. The promotion originated from the adsorption of AAs and wax at the oil-water interface. By quantifying the percentage of adsorption area, the effect of adsorption on hydrate promotion was further analyzed. Micro-adsorption of AAs formed strong hydrogen bonding with interfacial water molecules, enhancing their cage-forming ability. Excessive AAs aggregated into micelles, increasing interfacial coverage and impairing methane mass-transfer. In AAs-wax systems, adsorbed wax molecules attracted methane toward the interface, further accelerating hydrate growth. Yet, excessive adsorption by AAs and wax reduced hydrate formation. These results show that AAs-wax interactions can enhance hydrate growth, highlighting increased plugging risks during slurry transport in wax-containing systems. The findings provide mechanistic insights crucial for optimizing AA application in flow assurance strategies.

关键字：Oil-water system; Anti-agglomerants; Wax; Hydrate growth kinetics; Molecular dynamics simulation

ISSN号：0009-2509

卷、期、页：卷: 322

发表日期：2026-03-01

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：CHEMICAL ENGINEERING SCIENCE

参与作者：殷雄,廖清云,姚海元

通讯作者：朱羽墨,隋金昊,王明洋,廖那伽,刘丹妮,吴文宇

第一作者：史博会,宋尚飞,宫敬

论文类型：期刊论文

论文概要：朱羽墨,史博会,殷雄,廖清云,隋金昊,王明洋,廖那伽,刘丹妮,吴文宇,姚海元,宋尚飞,宫敬，Microscopic influences of anti-agglomerants and wax molecules adsorption at the oil-water interface on methane hydrate growth，CHEMICAL ENGINEERING SCIENCE，2026，卷: 322

论文题目：Microscopic influences of anti-agglomerants and wax molecules adsorption at the oil-water interface on methane hydrate growth