ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,038, issued on Feb. 17, was assigned to Visuray Technology Ltd (Sliema, Malta).

"Methods and means for simultaneous casing integrity evaluation and cement inspection in a multiple-casing wellbore environment" was invented by Philip Teague (Houston) and Alex Stewart (San Francisco).

According to the abstract* released by the U.S. Patent & Trademark Office: "An x-ray based cement evaluation tool for measurement of the density of material volumes within single, dual and multiple-casing wellbore environments is provided, wherein the tool uses x-rays to illuminate the formation surrounding a borehole, and a plurality of detectors are used to directly measure the density of the cement ...