US Patent Issued to Halliburton Energy Services on May 20 for "Downhole shunt tube isolation valve system" (Texas Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,482, issued on May 20, was assigned to Halliburton Energy Services Inc. (Houston).

"Downhole shunt tube isolation valve system" was invented by Finn Gamble McCarthy (Carrollton, Texas), Edmund Christopher Williamson (Carrollton, Texas), Stephen Michael Greci (Carrollton, Texas) and Ryan M. Novelen (Carrollton, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A downhole shunt tube isolation system having a fluid channel and a piston hydraulic chamber disposed within a valve actuator housing, wherein the fluid channel is sealed via a plug to hydraulically lock a valve in an open position, wherein a gravel slurry is configured to flow from a first ...