ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,333, issued on Feb. 17, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Formation tester stress testing with drill pipe supplied acid and/or proppant injection" was invented by Adriaan Gerard Gisolf (Bucharest, Romania), German David Garcia (Sugar Land, Texas), Ashers Partouche (Sugar Land, Texas), Mikhail Charupa (Dhahran, Saudi Arabia), Bei Gao (Shenzhen, China), Francois-Xavier Dubost (Paris) and Ahmed Moge Ali (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments presented provide for formation testing in geological stratum that exhibit low permeability. In embodiments, a drill pipe supplied acid a...