Methods and apparatus for releasing a chemical into a well bore upon command

摘要

Methods and apparatuses for releasing a chemical in a well bore are disclosed. Zone apparatus includes a curved member configured for coupling to a casing, and a hollow member is connected to the curved member. A chemical container is disposed, at least in part, within the hollow space, and the hollow member extends at least partially around a hollow space. #1/ 120 Yr 4 150