Improvements and Application of Iterative Method for Calculating Homogenization Pressure of H2O-CO2-Nacl Inclusion System
详细信息
- 责任者：Xi Binbin (Research Institute of Petroleum Geology ; SINOPEC ; Wuxi 214151 China) ; Shi Weijun
- 刊名：Mineral Deposits
- 出版年：2010
- 卷期：29(6)
- 关键词：流体包裹体 ; fluid inclusions ; 迭代法 ; iterative methods
- 页码：p.1138-1144
- 图表：2 illus., 1 table, 38 refs.
- 分类号：1900
- issnNo：ISSN0258-7106
- isbnNo：CN11-1965/P
摘要
An improved model for calculating the composition and homogeneous pressure of H2O-CO2-NaCl is presented in this paper,which is based on the model advanced by Song et al. in 2007 and used the updated H2O-CO2-NaCl thermodynamic equations of Duan et al. The authors use a more accurate equation to calculate the solubility and molality of CO2 and extend the pt range (homogenization temperature ≥300 ℃) into the middle part with t of 0～260 ℃ and p of 0～1 000×105 Pa. This new model is also suitable for the system with moderate salinity. The method used in this model is applicable to the H2O-CO2-NaCl system under the conditions that the partial homogenization temperature of the CO2 is higher than the melt temperature of the clathrate, the final homogenization wholly reaches the liquid phase and the system contains no daughter crystals.
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