ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,622, issued on Dec. 30, was assigned to Flex-Chem Holding Co. LLC (Weatherford, Okla.).
"Iron control as part of a well treatment using time-released agents" was invented by Andrew Bryce Conway (Weatherford, Okla.) and Scott Bailey (Round Rock, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a well in a subterranean formation, treatment fluids for time-released iron control are utilized. These treatment fluids contain a time-released form of a complexing agent, wherein the complexing agent forms an insoluble complex with iron. The time-released form prevents loss of the agent prior to delivery to the desired site and at the desired time(s). ...