External Casing Packer
The External Casing Packer (ECP®) has an Inflatable Packing Element that is run as an integral part of the casing string to provide a mechanism to seal between casing OD and the well bore wall. ECP features a fully continuous mandrel as part of the casing or liner, and an Inflatable Packer Element as the main component. ECPs can be used to support primary cement, isolate lower zones during multi-stage cementing, and isolate lost-circulation zones during cementing. Most packers are bladders that are inflated by fluid pressure and have different pressure ratings.