ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,474, issued on May 20, was assigned to METROL TECHNOLOGY Ltd. (Aberdeen, Great Britain).
"Wireless casing packer" was invented by Leslie Jarvis (Stonehaven, Great Britain), Shaun Ross (Aberdeen, Great Britain) and David Martin (Aberdeen, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A casing packer apparatus (P) comprising a mandrel (2) having a longitudinal throughbore, a packer element (6) mounted on the mandrel, and an expansion mechanism comprising a piston (11, 12) configured to move the packer element from a first position radially outwards to a second position. A bypass conduit (25) extends generally in said longitudinal direct...