海洋天然气水合物形成及分解过程研究现状

Research Progress on Natural Gas Hydrate Exploration

天然气水合物具有分布范围广、成藏浅、储量大、能量密度高、燃烧清洁等优点,是21世纪最具开发前景的重要能源。本文对国内外天然气水合物形成相平衡实验及主要预测模型(vdW-P模型、Chen-Guo模型、Klaudia模型)及分解过程动力学模型(Kim-Bishnoi模型、Jamaluddin模型、Komai模型)进行了比较分析。指出今后研究中需将气体组成、沉积物孔大小分布、界面张力、盐离子种类和浓度等因素的影响考虑到水合物相平衡模型中;并开展温度场对海底沉积物中水合物分解过程影响的研究。

Due to the advantages of high energy density,wide distribution,shallow reservoir,large reserves and clean combustion,natural gas hydrate is regarded as one of the important energy in the 21 st century. Phase equilibrium models（ such as vdW-P model,Chen-Guo model and Klauda model） and decomposition kinetic models for gas hydrate including Kim- Bishnoi model,Jamaluddin model and Komai model were separately compared and analyzed in detail.Finally,it was suggested that the effects of gas composition,pore distribution,interfacial tension,type and concentration of salt ion on phase equilibrium should be investigated in the future work. Further study was also required for the effect of temperature field on the decomposition of gas hydrate in the seabed sediment.