ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,443,775, issued on Oct. 14, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).
"Determining maturity of paleozoic unconventional shale gas" was invented by Feng Hu Lu (Dhahran, Saudi Arabia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of fabricating and utilizing an unconventional reservoir maturity chart is provided. A historical dataset for a Paleozoic or a pre-Paleozoic shale or sandstone unconventional reservoir is utilized to obtain carbon isotopic ratio values for Delta13C1, Delta13C2, and vitrinite reflectance equivalents (VRE). Such data is utilized to plot several maturity shapes based upon VRE values, where several o...