A Perspective on Rheological Studies of Gas Hydrate Slurry Properties  

作　　者：Ahmad A.A. Majid David T. Wu Carolyn A. Koh 

机构地区：[1]Center for Hydrate Research, Chemical and Biological Engineering, Colorado School of Mines, Golden, CO 80401, USA [2]faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang, Pekan 26600, Malaysia [3]Department of Chemistry, Colorado School of Mines, Golden, CO 80401, USA

出　　处：《Engineering》2018年第3期321-329,共9页工程（英文）

摘　　要：Gas hydrates are solid inclusion compounds that are composed of a three-dimensional hydrogen-bonded network of water cages that can trap small gas molecules, such as methane and carbon dioxide. Understanding the rheological properties of gas hydrate crystals in solution can he critical in a number of energy applications, including the transportation of natural gas in suhsea and onshore operations, as well as technological applications for gas separation, desalination, or sequestration. A number of exper- imental and modeling studies have been done on hydrate slurry rheology; however, the link between theory and experiment is not well-defined. This article provides a review on the current state of the art of hydrate slurry viscosity measurements from high- and low-pressure rheometer studies and high-pressure flowloops over a range of different sub-cooling （ATsub = TequiI Texp） and fluid conditions, including for water and oil continuous systems. The theoretical models that have been developed to describe the gas hydrate slurry relative viscosity are also reviewed. Perspectives＇ linkage between the experiments and theory is also discussed.天然气水合物是一种固体包合物,由三维氢键网络组成,可以用来捕获天然气小分子,如甲烷和二氧化碳。了解溶液中天然气水合物晶体的流变性能对于许多能源方面的应用至关重要,包括天然气在海底和陆地上的运输以及天然气分离、脱盐或封存等方面的技术应用。人们已经对水合物浆液流变学进行了多次实验和模拟研究。然而,理论与实验之间的联系并不明确。本文综述了对高、低压流变仪的研究以及在高压流动环境下,一系列不同的过冷度(ΔT_(sub)=T_(equil)-T_(exp))和流体条件的水合物浆液黏度测量技术的现状(包括水和连续油系统),同时介绍了天然气水合物浆液相对黏度的理论模型,并讨论了实验和理论之间的联系。

关 键 词：Relative viscosity Flow assurance RHEOMETER Oil-continuous 

分 类 号：N4[自然科学总论]