US Patent Issued to Chevron U.S.A., Chevron Oronite on May 5 for "Methods for preventing corrosion in flexible pipe with passivating agents" (Texas, California Inventors)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,309, issued on May 5, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.) and Chevron Oronite Co. LLC (San Ramon, Calif.).

"Methods for preventing corrosion in flexible pipe with passivating agents" was invented by Farzan Parsinejad (Houston), Antonio Critsinelis (Kingwood, Texas), William R. Ruhe Jr. (Benicia, Calif.) and Man Kit Ng (El Sobrante, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are methods and apparatus for preventing corrosion within the annulus of a flexible pipe used in a riser in an offshore hydrocarbon production facility. Buffer fluid comprising a passivating agent is introduced into the annulus to form prote...