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- Title
A new method of adsorption isotherm in high temperature and pressure.
- Authors
Ze-yang PENG; Sheng-xiang LONG; Yong-gui ZHANG; Ting LU; Ru-yue WANG
- Abstract
It’s very important for the development of shale gas reservoir to describe the adsorption characteristics of shale gas reservoir, especially at high temperature and pressure and predict adsorption isotherms under different temperatures by one adsorption isotherms. Based on the D-R adsorption potential method, isothermal adsorption curve under high temperature and high pressure was established, which can predict the isothermal adsorption curve under different temperature. The method is fitting of the real data in Ordos Basin, with pressure from 0-30 MPa, and temperature at 120 ℃, and forecast their isotherms under 20-100 ℃. Results show that the temperature has no effect on the maximum adsorption capacity, only affect the change rate of absolute adsorption capacity with pressure, but the temperature will greatly affect the maximum amount of excess adsorption and the downward trend at high pressure.
- Subjects
ADSORPTION isotherms; HIGH temperatures; SHALE gas reservoirs; LANGMUIR isotherms; ADSORPTION capacity; SHALE gas; PRESSURE
- Publication
Natural Gas Geoscience, 2020, Vol 31, Issue 6, p11
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672-1926.2019.12.007