Patent ID: 8603827

Claim:
A tracer system comprising two or more tracer compounds for a petroleum production fluid transport system and an analyzing apparatus, wherein the fluid transport system comprises a conduit from a first part of the fluid transport system to a second part of the fluid transport system and the first part of the fluid transport system comprises two or more distinct entry points of one or more fluids to the conduit, wherein the fluid transport system is further subdivided into conduit sections and each conduit section comprises one or more of the distinct entry points, wherein the two or more tracer compounds each comprise a distinct combination of one or more monodisperse polyether alcohol compounds, wherein the one or more monodisperse polyether alcohol compounds have a distinct molecular weight and comprise one or more functional groups, wherein the tracer system is subdivided into two or more distinct combinations of the monodisperse polyether alcohol compounds, each combination corresponding to one subdivided conduit section of the fluid transport system, and wherein samples collected from the second part of the fluid transport system for analysis to determine the presence or absence of the one or more distinct combinations of monodisperse polyether alcohol compounds comprising the one or more functional groups in the one or more samples enables the determination of the one or more monodisperse polyether alcohol compounds having a distinct molecular weight each corresponding to one subdivided conduit section of the fluid transport system in the sample, based on detected monodisperse polyethyleneglycol compounds, and enables the determination of the subdivided conduit section of the fluid transport system comprising the entry point of the fluid present in the one or more samples.