天然气水合物藏注热开采敏感参数分析

天然气水合物作为一种潜在的未来能源,其开采已经成为天然气工业新的研究热点。基于水合物藏热力开采的机理,建立了数学模型并编制了软件,对影响水合物藏注热开采效果的参数进行了敏感性分析。结果表明,分解前缘移动速度和累积产气量主要受孔隙度、注热温度、初始水合物饱和度、水合物藏初始温度、分解区导热系数和热扩散系数的影响,而未分解区的热力学参数对注热开采影响不大,该研究对今后水合物藏的注热开采具有一定的指导意义。

Sensitivity analysis of thermal dissociation of natural gas hydrate

As a potential energy in the future, natural gas hydrate has become a new hot focus of the natural gas industry. Basedon the mechanism of thermal dissociation, a mathematical model is set up and solved. Sensitivity analysis of hydrates production fromthermally induced dissociation is conducted to determine the governing parameters. The results show that the thermal dissociation frontof hydrates and the gas production are mainly influenced by porosity, injection temperature, initial hydrate saturation, initi...