Review Article

A Review of Gas Flow and Its Mathematical Models in Shale Gas Reservoirs

Table 1

Adsorption models and formulas [17, 20, 21].

ModelFormula

Langmuir model (L model)
Freundlich empirical formula (F model)
Bi-parameter BET model (B-BET model)
Toth adsorption model (T model)
Langmuir-Freundlich adsorption model (L-F model)
Extended Langmuir model (E-L model)
Three-parameter BET model (T-BET model)
Dubinin-Radushkevich volume filling model (D-R model)