ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,828, issued on Sept. 23, was assigned to Odfjell Well Services Norway AS (Tananger, Norway).
"Drill string mountable wellbore cleanup apparatus and method" was invented by Simon Leiper (Dubai, United Arab Emirates) and Kevin Robertson (Insch Aberdeensir, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drill pipe mountable wellbore cleaning tool apparatus is of an improved configuration that enables attachment to a drill pipe joint having first and second connector end portions and a cylindrically shaped portion in between the connector end portions. The drill pipe joint with attached debris cleaning tool or tools is made part of a dr...