Gas solubility in saline water and its effect on hydrate equilibria

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:256947

Tohidi, B; Danesh, A; Burgass, R W; Todd, A C ^[1]

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1. Heriot-Watt Univ., Edinburgh (United Kingdom). Dept. of Petroleum Engineering

This paper presents experimental data and a predictive model for gas solubility in saline water in a wide range of temperature and salt concentration. Solubility of two important gases, methane and carbon dioxide, in aqueous electrolyte solutions of NaCl, KCl, CaCl{sub 2} and their mixtures, have been investigated. The Aasberg-Petersen gas solubility model has been improved and extended to lower temperatures, new salts, and mixed electrolyte solutions by using newly generated experimental data. The developed solubility model is able to calculate gas solubility in saline water within a temperature range of 260--400 K and at a full range of salt concentrations. The model predictions are compared with available experimental data and good agreement is demonstrated. The above improvement in gas solubility prediction also proved to give more reliable results in hydrate calculations for high soluble gases in the presence of electrolyte solutions.

• OSTI ID: 256947
• Report Number(s): CONF-950604--; ISBN 1-880653-17-6
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
BRINES
CALCIUM CHLORIDES
GAS HYDRATES
MULTIPHASE FLOW
OFFSHORE OPERATIONS
OFFSHORE SITES
PIPELINES
POTASSIUM CHLORIDES
SODIUM CHLORIDES
SOLUBILITY