ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,453, issued on May 20, was assigned to FORUM US INC. (Houston).
"Casing shoe assembly" was invented by Jeffery Morrison (Missouri City, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "Casing shoe assemblies that are configured to direct the drilling of multiple wellbores below a single primary wellbore. The casing shoe assembly has an outer housing and an inner body at least partially disposed within the outer housing that is formed out of a drillable material. The inner body has a bore formed through the inner body. A check valve assembly is disposed within the bore of the inner body. A guide plate is disposed within the outer housing above th...