PASSIVE WELLBORE MONITORING WITH TRACERS

A method involving introducing a perforation string into a wellbore passing through a subterranean formation, the perforation string having a perforation gun and a releasable tracer, the releasable tracer being releasable in response to a fluid produced from the subterranean formation contacting the nearby perforation string. The method includes perforating, with the perforation gun, a surface of the wellbore and withdrawing fluid from a wellbore. The method further includes allowing the releasable tracer to release from the perforation string after the fluid produced from the formation contacts the perforation string and flows toward an entrance of the wellbore. Finally, measuring at least one of an amount or presence of the releasable tracer thereby indicating at least one of an amount or presence of the fluid produced from the subterranean formation.