US Patent Issued to ExxonMobil Technology and Engineering on Jan. 13 for "Methods for preparing petroleum coke proppant particles for hydraulic fracturing" (Texas, Pennsylvania Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,764, issued on Jan. 13, was assigned to ExxonMobil Technology and Engineering Co. (Spring, Texas).

"Methods for preparing petroleum coke proppant particles for hydraulic fracturing" was invented by Robert M. Shirley (The Woodlands, Texas), Peter A. Gordon (Yardley, Pa.), Jonathan M. Gieseke (Pinehurst, Texas), Xiao Jin (Kingwood, Texas) and P. Matthew Spiecker (Manvel, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method comprises providing feed petroleum coke particles comprising particles larger than a predetermined threshold size, particles smaller than the threshold size, and optionally petroleum coke microproppant particles, where the ...