ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,415, issued on July 14, was assigned to Halliburton Energy Services Inc. (Houston).
"Expandable frac plug" was invented by Adam J. Milne (Carrollton, Texas), Daniel Keith Moeller (Carrollton, Texas) and Donald Ray Smith (Duncan, Okla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus comprising a frac plug to be positioned inside casing of a wellbore formed in a subsurface formation. The frac plug is configured to expand to contact an inner wall of the casing and maintain, via one or more components coupled with the frac plug, a position while the frac plug is expanded."
The patent was filed on Feb. 16, 2024, under Application No. 18/443,...