石油学报 ›› 2000, Vol. 21 ›› Issue (1): 64-70.DOI: 10.7623/syxb200001012

• 油田开发 • 上一篇    下一篇

水合物模型的建立及在含盐体系中的应用

陈光进, 马庆兰, 郭天民   

  1. 石油大学流体高压相态及物性研究实验室, 北京102200
  • 收稿日期:1998-11-17 修回日期:1999-06-28 出版日期:2000-01-25 发布日期:2010-05-21
  • 作者简介:陈光进,男,1965年11月生.1993年毕业于天津大学,博士.现任石油大学(北京)副教授.通讯处:北京昌平水库路.
  • 基金资助:
    国家自然科学基金(No.29806009)

A NEW HYDRATE MODEL AND ITS EXTENDED APPLICATION IN ELECTROLYTE CONTAINING SYSTEM

CHEN Guang-jin   

  1. Petroleum University, Beijing
  • Received:1998-11-17 Revised:1999-06-28 Online:2000-01-25 Published:2010-05-21

摘要: 基于一个新的水合物生成机理,提出了一个简化的水合物热力学模型;在此模型基础上,结合左有祥博士提出的可用于高压电解质水溶液的MPT状态方程,将水合物生成条件预测扩展应用于含电解质体系.大量检验结果表明,新模型在预测气体水合物生成条件方面优于传统的vander Waals Platteeuw(vdWP)模型及其改进型,可适用于预测天然气、凝析气和原油在纯水和盐水中生成水合物的条件.

关键词: 水合物, 生成机理, 热力学, 模型, 电解质

Abstract: A new initiation mechanism is proposed for gas hydrate formation from liquid water. Based on this mechanism, a new thermodynamic hydrate model has been developed and extended to the electrolyte-containing system by incorporating with modified Patel-Teja equation. A number of test results indicate that the new model is superior to the traditional van der Waals-Platteeuw typed ones and adequater for prediction of the hydrate formation conditions for natural gas, gas condensate or crude oil. It has been also shown that the new model is applicable to the system containing brine inhibitor.

Key words: gas hydrate, formation mechanism, thermodynamic, model, eletrolyte

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