摘要：The viscosity of natural gas hydrates slurry in high-pressure hydrates slurry rheological measurement system is investigated, which is meaningful for hydrates risk management to solve flow assurance issues in deep-water offshore field. Based on an appropriate stirring speed and time, a relatively uniform and stable hydrates slurry were formed from a water-in-oil emulsion to study the hydrates formation and slurry viscosity under different water cuts, bath temperatures and AAs concentrations. The influence of water cut on hydrates formation and hydrates slurry viscosity is much more significant than that of bath temperature and AAs concentration. Results indicate that the hydrates volume fraction, the continuous liquid phase viscosity and the dispersion degree of hydrates particles in the slurry are the critical factors to affect the viscosity of natural gas hydrates slurry. Considering both of aggregation and breakage of hydrates particles, a natural gas hydrates slurry viscosity semi-empirical model is developed based on the Einstein effective medium theory. The key parameter non-Newtonian coefficient K of this model is determined by several empirical correlations according to the experimental conditions and fluid properties. The consistence of predicted and experimental data demonstrates the feasibility of this model.
© 2016 Elsevier Ltd

ISSN号：0016-2361

卷、期、页：v 185,p323-338

发表日期：2016-12-01

影响因子：0.000000

收录情况：SCI（科学引文索引印刷版）,ESI（基本科学指标数据库）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：Fuel

参与作者：王麟雁,吕晓方,刘慧姝

通讯作者：柴帅

第一作者：史博会,吴海浩,王玮,于达,宫敬

论文类型：期刊论文

论文概要：史博会,柴帅,王麟雁,吕晓方,刘慧姝,吴海浩,王玮,于达,宫敬，Viscosity investigation of natural gas hydrate slurries with anti-agglomerants additives，Fuel，2016，v 185,p323-338

论文题目：Viscosity investigation of natural gas hydrate slurries with anti-agglomerants additives