US Patent Issued to Chevron U.S.A. on Sept. 30 for "Cement top jobs in wellbore annuli using expandable compositions" (Texas Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,931, issued on Sept. 30, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.).

"Cement top jobs in wellbore annuli using expandable compositions" was invented by Douglas Cory Arceneaux (Katy, Texas), Benjamin James Krane (Houston), Caleb Kimbrell Carroll (Houston) and Michael James Fuller (Cypress, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of deploying an expandable composition in a cement top job in a well system includes identifying evidence of actual or potential gas migration within an annulus cement of the well system. Once the evidence of gas migration is identified, a first component and a second component are mixed in...