ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,377, issued on Nov. 25, was assigned to FORUM US INC. (Houston).
"Pump down wiper plug assembly" was invented by Jeffery Morrison (Missouri City, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the present disclosure relate to wellbore plugs, and specifically to pump down wiper plug assemblies used for conducting casing integrity pressure tests and completing wellbores. A plug assembly comprises one or more of a mandrel, a wiper, a plug member, a ring member, and dissolvable member. The dissolvable member, and the plug member and the ring member are configured to temporarily close fluid flow through an inner bore of the mandrel. The ...