US Patent Issued to Chevron U.S.A. on July 21 for "Calcium carbonate coated tracers for assessing acid stimulation operations in a hydrocarbon well" (Texas Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,103, issued on July 21, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.).

"Calcium carbonate coated tracers for assessing acid stimulation operations in a hydrocarbon well" was invented by Michael James Fuller (Cypress, Texas) and Shannon Kirstin Stocks (Alvin, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for assessing the effectiveness of an acid stimulation operation in a hydrocarbon well. The methods use encapsulated tracer particles comprising a tracer material that is coated with a calcium carbonate shell. Different encapsulated tracer particles are placed into different portions of a well. A subsequent acid stimulation o...