The Palmer-Mansoori (P-M) theory of permeability changes incorporated into a pseudosteady-state equation can predict the approximate peak gas flow rate and decline with depletion for coalbed methane ...

New tools and interpretation techniques provide continuous well permeability profiles without coring or extensive well testing. These profiles obtained from wire line logs are ideally suited for ...

As energy costs rise, membrane technology for separating gases is likely to play an increasingly important role in reducing the environmental impact and costs of industrial processes. Gas separation ...