摘要
天然气水合物主要赋存于各种沉积物孔隙之中,只有6%左右以块状纯水合物的形式存在。现在对于天然气水合物相平衡条件的研究主要集中在对多孔介质各因素的考察。就目前研究成果来看,理论预测自然条件中水合物稳定条件的准确性仍然较差,其主要原因:水合物稳定存在的天然条件影响因素远比实验室中(大多预测模型基于实验室建立)的影响因素复杂得多;实际中的介质微孔孔径并不恒定,呈分布状态,且分布比较复杂;自然条件下的多孔介质的成分、结构都非常复杂。
Natural gas hydrates mainly exist in fractures of seabed or permafrost sediments,and only six percent are bulk hydrates.Now,the most investigation of natural gas hydrate phase equilibrium condition mainly concentrate on the studies of pore structures.However,at present,the accuracy of theoretical predictions of natural gas hydrates stabilization conditions is still not satisfied.The main reasons are that：natural influencing factors of natural gas hydrates stabilization conditions are much more complex than the considering factors in laboratories,where the most prediction models were made;the natural radius of pores in porous media keeps not simple constant but complex distribution;the natural compositions and structures in porous media are very complex.
出处
《河北化工》
2010年第6期7-10,共4页
Hebei Chemical Industry
关键词
天然气水合物
多孔介质
相平衡条件
natural gas hydrates
porous media
equilibrium conditions
