Abstract: A method for normalizing a chemical tracer response in a zone can include measuring a concentration of the tracer as produced from a proximal zone, measuring a concentration of a reference tracer as produced from the proximal zone, and applying a mathematical correction to a concentration of the tracer as produced from the zone. Another method can include normalizing a chemical tracer concentration to a reference tracer concentration, and then allocating flow to a zone corresponding to the tracer based on the normalized tracer concentration. Another method can include injecting a first chemical tracer into a first wellbore reference zone and into additional producing zones of the first wellbore, injecting a second chemical tracer into a second wellbore reference zone and into additional producing zones of the second wellbore, and injecting a third chemical tracer into each of the additional producing zones of the first and second wellbores.

Abstract: A tracer injection system can include a tracer solution, a pump configured to pump the tracer solution, a data transmitter associated with the tracer solution, a data receiver configured to receive tracer characteristic data from the data transmitter, and a pump controller that variably operates the pump, based at least in part on the tracer characteristic data received by the data receiver. A tracer injection method can include associating a data transmitter with a container and a tracer solution in the container, so that the data transmitter is transported with the container and the tracer solution, receiving from the data transmitter data indicative of a characteristic of the tracer solution, and pumping the tracer solution from the container at a flow rate based at least in part on the received data.