ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,632, issued on June 17, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).

"Analyzing hydrocarbon flow into multi-lateral wells by releasing tracers from the surface" was invented by Gawain Thomas (Cambridge, Mass.), Hsieh Chen (Cambridge, Mass.) and Martin E. Poitzsch (Cambridge, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Hydrocarbon flow into multi-lateral wells is analyzed by controlled release of tracers from the surface. Hydrocarbons flow into a lateral formed from a wellbore into a subterranean zone. A wellbore production tubing is installed within the wellbore and extends toward the lateral. The wellbore production tubin...