CO2-ECBM workshop

Coalbeds as (unconventional) gas reservoirs are characterised by two distinctive porosity systems: a well-defined and almost uniformly distributed network of natural fractures (also known as cleats) and matrix blocks containing a highly heterogeneous porous structure between the cleats.

As such, coalbed reservoirs generally conform rather well to the Warren and Root type of dual porosity reservoir models, which are developed for naturally fractured petroleum reservoirs.