Patent attributes
A one-time-use pressure-actuated conduit closure is provided, to selectively withstand fluid pressure from one side of the device until the closure is removed remotely, the closure device being a frangible dome designed to withstand fluid pressures from one side but to rupture upon application of higher pressure on its other side, which provides a mechanism to isolate downhole fluid under (high) pressures in part of a well during operations for a period of time selected by an operator, and then to remove the isolation by breaking the rupture dome remotely by application of extra fluid pressure or other forces from surface. The frangible dome has features in at least one surface to guide and control its breakage to provide controlled shard sizes and shapes and a predictable opening for minimal obstruction of the conduit when broken away.
