摘要：Low dosage kinetic hydrate inhibitors (KHIs) are a kind of alternative chemical additives to prevent gas hydrate formation in oil & gas production wells and transportation pipelines. In this work, a series of KHIs were experimentally synthesized with N-vinyl caprolactam (N-VCap) and vinyl ether including vinyl ether, vinyl n-butyl ether, vinyl isobutyl ether, triethylene glycol divinyl ether, with the mole ratio ranging from 9:1 to 5:5. The inhibition performance of new-synthesized KHIs on the formation process of methane hydrate were examined and compared with that of commercial N-vinyl caprolactam PVCap. Several ethylenediamine reagents were used as synergists and tested to improve the inhibition capacity of new-synthesized KHIs. The experimental results demonstrate that the introduction of ether groups on PVCap improves the performance of hydrate inhibitors. PVCap-VNBE (N-VCap: vinyl n-butyl ether = 5:5) shows the best inhibition performance for methane hydrate, which could extend the TVO to 1251 min under 6 K subcooling. N,N′-dimethylethylenediamine shows the best synergistic effect for PVCap-VNBE (5:5), and extends the TVO by 2.75 times at 7 K subcooling. Additionally, the relationship between hydrate inhibition performance and interfacial tension of newly-synthesized KHIs under high pressure were studied. It shows that the lower interfacial tension of KHIs would result in longer onset time, exhibiting better inhibition performance. ? 2024 The Authors

ISSN号：1672-5107

卷、期、页：v 21,n 6,p4454-4463

发表日期：2024-12-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：一区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：Petroleum Science

参与作者：庞维新

通讯作者：祝一健,朱然

第一作者：黄兴,王晓辉,肖朋,孙长宇,陈光进

论文类型：期刊论文

论文概要：黄兴,祝一健,王晓辉,朱然,肖朋,庞维新,孙长宇,陈光进，The development of high-performance kinetic hydrate inhibitors by introducing N-vinyl caprolactam and vinyl ether homopolymers into PVCap，Petroleum Science，2024，v 21,n 6,p4454-4463

论文题目：The development of high-performance kinetic hydrate inhibitors by introducing N-vinyl caprolactam and vinyl ether homopolymers into PVCap