Retrievable packer apparatus

Abstract

An apparatus comprising a mandrel () having a main longitudinal direction and defining a throughbore in that direction and a packer element () mounted thereon. A seal bore extension () is attached, directly or indirectly, to the mandrel, and defines a bore () in the main longitudinal direction. A floating seal () is provided between the bore of the seal bore extension and an internal moveable tube/stinger (). A bypass channel () extends across the packer element between an upper bypass port (U,U) and a lower bypass port (L,L), generally in said longitudinal direction. A bypass valve () controls said upper or lower bypass port. The valve may move more than once and may be a multi-cycle valve. An electronic communication device () comprising a wireless receiver is configured to receive wireless signals such as EM or acoustic, to control the bypass valve. In this way the safety of well testing can be improved.