简易水合物生成条件预测模型

A Simple Prediction Model for Hydrate Formation Conditions

在天然气开采及长输过程中,气体组成、温度、压力和含水量成为水合物形成的主要原因,所以,天然气水合物的形成条件的预测和防治成为天然气科学界十分关注的问题。基于能量守衡和范德华混合规则,用一种简化的热力学模型进行了天然气水合物形成条件的预测,分析了温度、压力、酸性气体等因素对水合物形成条件的影响。结果表明,模型能较好地预测水合物的形成条件,在实际工程应用中具有一定适用价值。

During natural gas production and transportation,gas components,temperature,pressure and water content are main factors affecting hydrate formation. It is very important in natural gas industry to predict and control natural gas hydrate formation conditions. Based on energy conversation law and Vander Waals's mixture rule,natural gas hydrate formation conditions are predicted by using a simple thermodynamics model and analyzed are effects of such factors as temperature,pressure and sour gas on hydrate formation conditions. The results show that the model can predict hydrate formation conditions efficiently and may be applied in practical engineering design.