The natural gas content in Montney is one of the largest in the world. It is estimated that if the annual demand for natural gas in Canada stays at the level of 2012, which was 88 billion m3, then Montney will be able to meet the demand for the next 145 years. Estimates put natural gas content to about 12,719 billion m3 and that of natural gas liquid to about 2,308 million m3.
On the other hand, oil content in Montney is considered quite large and it is expected to produce about 179 million m3.
These are just estimates and it is quite possible that the natural gas and oil content at Montney could be much higher as the entire carpet of the gas play has not been explored and drilled.