ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,336, issued on Sept. 8.
"Biodegradable and acid soluble materials for control of loss of circulation in reservoir drilling operations" was invented by Autumn Shepherd (Katy, Texas), Dorianne A. Castillo (Humble, Texas), April Shi (Katy, Texas) and Hunter Wright (Katy, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lost circulation pill for a drilling or completion operation includes, based on a total weight of the lost circulation pill, about 0.1 to about 2 weight percent of a luffa component comprising at least one of a luffa fiber or luffa sponge; about 10 to about 30 weight percent of at least one of a sized carbonate or a sized degradabl...