Hi All,

I have a coal seam well which is currently shutin and close to de-sorption. Once the gas bubles out, the idea is to keep the annulus shutin ( to allow gas pressure buildup),and continue dewatering and open annulus to produce the gas.

My question is: can I estimate 1) gas build-up pressure rate (pressure increase per day in the annulus) 2) the inital gas flow rate once I open the annulus to get the gas,

Your help is appreciated,

Regards