ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,847, issued on Dec. 16, was assigned to ProShale LLC (Spring, Texas).
"Fluid-driven dual-mode circulation tool" was invented by Martin Mauro Nebiolo (Neuquen Capital, Argentina), Cristian Brendstrup (Neuquen Capital, Argentina), Christian Cerne (Spring, Texas) and Gustavo Dietrich (Neuquen Capital, Argentina).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fluid-driven dual-mode circulation tool which is selectively operable to switch between annular flow mode and flow-thru mode is disclosed. In the annular flow mode, fluid exits the sidewalls of the tool through one or multiple apertures. A ratchet path having mated peaks and valleys on the surface...