METHODS FOR MAXIMUM SHOCK STIMULATION WITH MINIMUM VOLUME, MINIMUM RATE AND CONTROLLED FRACTURE GROWTH

摘要

A method for shock stimulating in shallow dry coal bed methaneformations is disclosed. The method includes accessing a target formation withaconveyance string having a stimulation tool, accumulating a stimulation fluidto athreshold pressure within a bore of the conveyance string by blocking a porton thetool. The formation is shock fractured by shock releasing the stimulationfluid byopening the port on the tool to communicate with the target formation.Substantiallyimmediately thereafter, subsequent injection of the stimulation fluid to thetargetformation is minimized or discontinued to minimize formation damage.