醇盐混合体系中天然气水合物生成条件预测

Projection of Natural Gas Hydrate Forming Conditions in Alcohol and Salts Mixed System

关键词:  天然气水合物 醇盐混合体系 生成条件 预测

Key words:  natural gas hydrate, alcohol and salts mixed system, forming conditions, prediction

摘要:

油气田生产中，现场生产中的水合物生成预测需考虑在醇盐混合中的情况。本文应用基于双过程水合物生成动力学机理的Chen＆Guo模型，选用PT状态方程结合基于局部组成概念的混合规则以及Debye-Huckel远程作用修正项，将水合物生成条件预测成功应用于醇盐混合体系，计算结果比较理想，从而为水合物的现场防治提供了依据。

Abstract:

In oil and gas field production, natural gas hydrate often forms and blocks the well column or transportation tube. Generally alcohol or salts are adopted as inhibiters. There is high mineralized degree in formation water, it has some inhibiting effects.