ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,259, issued on Oct. 7, was assigned to Halliburton Energy Services Inc. (Houston).

"Method to design cement slurry with minimal carbon footprint" was invented by Siva Rama Krishna Jandhyala (Spring, Texas) and John Paul Bir Singh (Kingwood, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of producing a cement composition with reduced carbon emissions may include: defining cement constraints comprising at least one cement property; calculating a set of cement compositions which satisfy the cement constraints, using cement property models corresponding to the cement constraints; calculating a carbon emission associated with each of the ce...