ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,247, issued on June 3, was assigned to GOWell International LLC (Houston).
"Apparatus and method for evaluating lightweight cement bonds in downhole" was invented by Jinsong Zhao (Houston) and Hichem Abdelmoula (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and apparatus for evaluating light-weight cement (LWC) bond conditions in production well in presence or absence of the tubing. The apparatus includes a tool string that can be lowered into the casing or the tubing. The tool string includes a segmented transducer ring matrix to excite the surrounding medium resulting in vibrations. The tool string further includes an impedance me...