ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,879, issued on April 29, was assigned to TRACERCO Ltd. (London).
"Oil field chemical release system" was invented by Lauren Adamson (Cleveland, Great Britain), Chun-tian Zhao (Cleveland, Great Britain) and Karen Waterman (Cleveland, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "An oil field chemical release system for controlled release of an oil field chemical within a hydrocarbon reservoir, well, or wellbore, the oil field chemical release system comprising: a plurality of microcapsules, each microcapsule comprising an oil field chemical and a microencapsulant, wherein the oil field chemical is contained within the microencapsulant; ...