US Patent Issued to SAUDI ARABIAN OIL on June 30 for "Circulation sub with integrated flapper check valve" (Saudi Arabia Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,022, issued on June 30, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).

"Circulation sub with integrated flapper check valve" was invented by Ibrahim A. Ghamdi (Dhahran, Saudi Arabia) and Abdulaziz Khalaf S. Alanazi (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A circulation sub includes a cylindrical body defining an internal flowpath extending longitudinally therethrough and being couplable within a drillstring, a projectile seat piston included within the cylindrical body and longitudinally translatable within the circulation sub, one or more bypass ports defined in the cylindrical body to facilitate flu...