ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,163, issued on July 8, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).

"Integrated time-lapse gas geochemistry and equation of state modeling for evaluating desorbed gas in production" was invented by Pan Luo (Dhahran, Saudi Arabia), Moemen A. Abdelrahman (Dhahran, Saudi Arabia), Rabah Mesdour (Dhahran, Saudi Arabia) and Abdulbari N. Alhayaf (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems for determining an estimated reservoir property using a determined desorption stage are disclosed. The method includes determining a fluid property and composition of a first fluid sample obtained from a r...