摘要：During the solid fluidization exploitation of marine natural gas hydrates, the hydrate particles and cuttings produced via excavation and crushing are transported by the drilling mud. The potential flow safety issues arising during the transport process, such as the blockage of pipelines and equipment, have attracted considerable attention. This study aims to investigate the impact of hydrate adhesion features, including agglomeration, cohesion, and deposition, on the flow transport processes in solid fluidization exploitation and to provide a reference for the design and application of multiphase hydrate slurry transport in solid fluidization exploitation. We established a numerical simulation model that considers the hydrate adhesion properties using the coupled computational fluid dynamics and discrete element method (CFD-DEM) for the multiphase mixed transport in solid fluidization exploitation. An appropriate model to simulate the adhesion force of the hydrate particles and the corresponding parameter values were obtained. The conclusions obtained are as follows. Under the same operating conditions, a stationary bed is more likely to form in the transport process due to the hydrate adhesion forces; adhesion forces can increase the critical deposition velocity of the mixture of hydrate particles and cuttings. Hydrate adhesion lowers the height of the solid-phase moving bed, while the agglomeration and cohesion of particles can intensify the aggregation and deposition of hydrate debris and cuttings at the bottom of the pipe. These particles tend to form a deposit bed rather than a moving bed, which reduces the effective flow area of the pipeline and increases the risk of blockage. ? 2022 Southwest Petroleum University

ISSN号：2405-6561

卷、期、页：卷9期3：403-411

发表日期：2023-09-01

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）,CSCD（中国科技引文期刊）（核心）

发表期刊名称：Petroleum

参与作者：王君傲,李焱,赵佳飞

第一作者：史博会,宫敬,李清平

论文类型：期刊论文

论文概要：王君傲,李焱,赵佳飞,史博会,宫敬,李清平，Simulation of the effect of hydrate adhesion properties on flow safety in solid fluidization exploitation，Petroleum，2023，卷9期3：403-411

论文题目：Simulation of the effect of hydrate adhesion properties on flow safety in solid fluidization exploitation