US Patent Issued to Saudi Arabian Oil on Feb. 17 for "Tracer compositions" (Massachusetts Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,983, issued on Feb. 17, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).

"Tracer compositions" was invented by Shitong Sherry Zhu (Waban, Mass.), Ayrat Gizzatov (Winchester, Mass.) and Nermeen Saadoun (Somerville, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for tracing gas flow in a hydrocarbon reservoir with compositions including a degradable polymer and a detectable component. An exemplary method includes introducing a tracer composition at a first location in the reservoir, contacting the tracer composition with the reservoir to hydrolyze the degradable polymer, and detecting a degraded tracer composition includin...