ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,612, issued on June 17, was assigned to Halliburton Energy Services Inc. (Houston).
"Shifting sleeve tieback seal system" was invented by Rutger Evers (Singapore), Daniel Newton (Singapore) and Brandon T. Least (Carrollton, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A shifting sleeve tieback seal system may include a body portion and a swellable material disposed about a circumference of the body portion. The swellable material is configured to expand in response to exposure to wellbore fluids. Further, the system may include an upper end ring disposed in a position axially above the swellable material, a lower end ring disposed in a posit...