US Patent Issued to Weatherford Technology Holdings on July 1 for "Reduction of equivalent circulating density in well operations" (Texas Inventor)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,107, issued on July 1, was assigned to Weatherford Technology Holdings LLC (Houston).

"Reduction of equivalent circulating density in well operations" was invented by Tuong T. Le (Katy, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "An equivalent circulating density (ECD) reduction tool can include a positive displacement fluid motor, and a fluid pump configured to be driven by the fluid motor. The fluid pump can include a fluid inlet and a fluid outlet disposed on respective opposite sides of an external flow restriction. A method of controlling equivalent circulating density (ECD) in a well can include connecting an ECD reduction tool in a tu...