ALEXANDRIA, Va., March 5 -- United States Patent no. 12,241,331, issued on March 4, was assigned to Halliburton Energy Services Inc. (Houston).
"Tight tolerance packer" was invented by Frank Vinicia Acosta Villarreal (Houston), Saul Emmanuel Vazquez Niebla (Houston) and Ahmad Rizal Maharam (Senai, Malaysia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A packer assembly has a packer mandrel and a packer element movable from an unset to a set position on the packer mandrel. An annular lock ring with a plurality of lock ring teeth is positioned in an annular space between the packer mandrel and a setting sleeve movable on the packer mandrel from a first to a second position to move the packer element to the se...