摘要：Natural gas hydrates, intricate crystalline structures formed by water molecules and small gas molecules, have emerged as a significant and globally impactful clean energy resource. However, their commercial exploitation faces challenges, particularly operational disruptions caused by sand -related blockages. Understanding the rheological properties of hydrate slurry, especially in the presence of micron -sized sand particles, is imperative for ensuring the flow assurance of subsea hydrate exploitation. This study extensively investigates the rheological properties of sand -containing hydrate slurries. The findings reveal that these slurries exhibit non -Newtonian fluid characteristics, including yield stress, thixotropy, and shear -thinning behavior. Solid -like elastic features are observed in sand -containing hydrate slurries before yielding, transitioning to viscous behavior after yielding. Even with a minimal amount of sand, both static yield stress and yield strain experience substantial changes, correlating with the increase in sand concentration. The research conclusively establishes the thixotropic nature of sand -hydrate slurries, where the viscosity decay rate is directly influenced by the shear rate. These insights aim to contribute comprehensively to the development of effective flow assurance strategies, ensuring the safe and stable operation of subsea hydrate exploitation. (c) 2024 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.

关键字：Natural gas hydrate production; Sand-containing hydrate slurries; Yield stress; Thixotropy; Shear-thinning behavior

ISSN号：1004-9541

卷、期、页：卷: 70页: 149-161

发表日期：2024-06-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：三区

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：CHINESE JOURNAL OF CHEMICAL ENGINEERING

参与作者：陈玉川,付顺康

通讯作者：刘礼豪,杨薪遥

第一作者：史博会,宋尚飞,吴海浩,陈光进,宫敬

论文类型：期刊论文

论文概要：史博会,宋尚飞,陈玉川,付顺康,刘礼豪,杨薪遥,吴海浩,陈光进,宫敬，Rheological study of methane gas hydrates in the presence of micron-sized sand particles，CHINESE JOURNAL OF CHEMICAL ENGINEERING，2024，卷: 70页: 149-161

论文题目：Rheological study of methane gas hydrates in the presence of micron-sized sand particles