ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,865, issued on Oct. 28, was assigned to SCHLUMBERGER TECHNOLOGY Corp. (Sugar Land, Texas).

"Valve system for selective control of drilling fluid flow" was invented by Edward Richards (Cheltenham, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A downhole tool for forming a wellbore includes a plurality of jets configured to flow a main flow of a flow of drilling fluid out of the downhole tool along a main flow path. The downhole tool includes a plurality of main valves in fluid communication with the plurality of jets along the main flow path and being actuatable to control the main flow through the plurality of jets. The downhole tool ...