ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,478, issued on May 20, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.).
"Evaluating choke valve performance during subterranean field operations" was invented by Hailing An (Houston) and James Nileshwar (Perth, Australia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for evaluating performance of a choke valve includes collecting baseline performance data for the choke valve during a first time period; establishing a relationship between a flow area and positions of the choke valve for the first time period; collecting measurements of parameters associated with the choke valve during a second time period; generating a predicted flow...