ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,098, issued on July 21, was assigned to Halliburton Energy Services Inc. (Houston).

"Cyclonic solids removal unit for downhole oil-water separation (DOWS)" was invented by David J. Steele (Carrollton, Texas) and Matthew Bradley Stokes (Carrollton, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus comprises one or more solids separators to be positioned downhole in a well formed in a subsurface formation, wherein each of the one or more solids separators are configured to receive a fluid from the subsurface formation and separate out sediment from the fluid, wherein the sediment is transported after separation to a destination locatio...