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

作　　者：刘士鑫[1] 郭平[2] 达世攀[1] 唐乐平[1] 

机构地区：[1]长庆油田公司勘探开发研究院 [2]油气藏地质及开发工程国家重点实验室西南石油学院

出　　处：《石油与天然气化工》2005年第5期346-348,共3页Chemical engineering of oil & gas

基　　金：油气藏地质及开发工程国家重点实验室开放基金资助(项目编号:PCN9924)。

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。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. As results the projection of natural gas hydrate forming conditions mustbe taken into alcohol and salts mixing system account in practice. In this paper, Chen & Guo model based on double - course formation dynamic mechanism is taken; PT EOS is elected and combined with the mixing precept based on local composition conception and remote action correction term. Therefore the projection of natural gas hydrate forming conditions can be used in alcohol and salts mixed system. The results of calculation are reasonable , so it can offers reference for the inhibition on - the -spot of hydrate.

关 键 词：天然气水合物 醇盐混合体系 生成条件 预测 

分 类 号：TE39[石油与天然气工程—油气田开发工程]