ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,844, issued on Dec. 16, was assigned to ROCKATEK Ltd. (Gloucester, Great Britain).
"High frequency torsional oscillation mitigation tool" was invented by Daniel Brendan Crowley (Gloucester, Great Britain) and Robert Donald John Sedgeman (Gloucester, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A high frequency torsional oscillation mitigation tool for use in a downhole drilling assembly. The tool has a first end, a second end, and a one-way coupling therebetween. The one-way coupling has a first part connected to rotate with the first end and a second part connected to rotate with the second end. The one-way coupling has an engaged c...