US Patent:
20090065210, Mar 12, 2009
Inventors:
Irene Gullapalli - San Ramon CA, US
Emrys Jones - Fallbrook CA, US
George Moridis - Oakland CA, US
International Classification:
E21B 43/24
E21B 36/00
Abstract:
The present invention is directed to using depressurization methods to create mobile fluid zones for producing fluids from a Class 3 hydrate reservoirs through a well. Aspects of the present invention include a two stage method wherein, the first stage includes producing fluid from a hydrate interval within the Class 3 hydrate reservoir through a well at a constant pressure and forming an interface, arid the second stage includes producing fluid through the interface at a constant mass rate and heating the well.