Patent ID: 11965404
Assignee: THE WELLBOSS COMPANY, LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A method for multistage fracturing a subterranean formation, the method comprising:
disposing a tubular within a wellbore formed in the subterranean formation, the tubular comprising: a first cluster of valves and a second cluster of valves;
running a plugging device into the tubular toward the first cluster of valves;
causing the plugging device to pass through the first cluster of valves without opening any valve therein; and
running the plugging device further downhole toward the second cluster of valves;
wherein a stopper assembly is installed in the plugging device in manner that allows pressure integrity from above the plugging device, and the assembly further configured to uninstall from the plugging device with an at least minimal pressure from therebelow in order to provide a flow path through the plugging device in both directions.