ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,465, issued on May 20, was assigned to Innovex International Inc. (Houston).
"Nested tubing hanger" was invented by Christopher William Hebert (Edmonton, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A nested tubing hanger has a wellhead housing that defines a wellhead bore, an outer hanger installed within the wellhead bore of the wellhead housing that has a parent bowl that supports an inner hanger. A hanger engagement carried by the outer hanger is radially moveable between a release position and an engagement position. In the engagement position, the hanger engagement engages an engagement profile on an outer surface of the inner hanger ...