ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,037, issued on June 2, was assigned to Halliburton Energy Services Inc. (Houston).

"Determining clean-up characteristics for designing wellbore fluid" was invented by Afshin Ahmady (Houston), Siva Rama Krishna Jandhyala (Katy, Texas) and Ronnie Glen Morgan (Waurika, Okla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method can include positioning a filter cake sample including a wellbore material in a filter cake insert of a testing apparatus. The testing apparatus can include a slot, walls, and a blade. The method can include applying increasing amounts of force to the filter cake sample until a threshold force is achieved. The threshold force c...