A method of identifying one or more chemical tracers present in a produced hydrocarbon oil/water stream flowing in a pipeline from a downhole well completion, the one or more chemical tracers having originally been applied to the outer surface of one or more lengths of tubing placed at known locations in the assembly of the downhole well completion, the chemical identification of each of the tracers and the location of each of the tracers having been recorded and retrievably stored for the well completion in the form of a relational database, the method comprising: a. passing the oil/water stream in contact with a water-cut sensor and transmitting an alarm signal from the sensor in response to the presence of water in the oil/water stream in an amount greater than a predetermined value; b. remotely actuating an automated sampling valve at a sampling point in fluid communication with the oil/water stream in the pipeline downstream of the well head in response to the alarm signal from the water-cut sensor, and admitting a predetermined volume of an oil/water sample from the pipeline into a sample collection vessel; c. allowing the oil/water sample to settle for a time sufficient to form an oil layer and an aqueous layer in the collection vessel; d. transferring a portion of the aqueous sample under pressure into a micro-fluidic chip configured for electrophoretic analysis and mixing the aqueous sample with a buffer solution to produce a buffered aqueous solution; e. applying an electro potential difference across the micro-fluidic chip to effectuate a migration of the molecules comprising the one or more tracer chemicals through the micro-fluidic chip based on the charge and size of the respective molecules in the buffered aqueous solution; f. contacting the buffered aqueous solution with an electrophoresis sensor to produce one or more unique chemical identification signals corresponding to the one or more chemical tracers present; g. passing the one or more chemical identification signals produced by the electrophoresis sensor to an electronic data information collection system for indexing and storage in association a unique sample identification code; h. comparing the chemical identification data from the aqueous sample to a stored database of chemical identification data prepared from chemical tracers used in the well completion and identifying any matches; i. transmitting the data corresponding to the matches identified in step (h) to a communication system to produce conditioned data; and j. transmitting the conditioned data to display and/or printing means accessible to well management personnel. a. passing the oil/water stream in contact with a water-cut sensor and transmitting an alarm signal from the sensor in response to the presence of water in the oil/water stream in an amount greater than a predetermined value; b. remotely actuating an automated sampling valve at a sampling point in fluid communication with the oil/water stream in the pipeline downstream of the well head in response to the alarm signal from the water-cut sensor, and admitting a predetermined volume of an oil/water sample from the pipeline into a sample collection vessel; c. allowing the oil/water sample to settle for a time sufficient to form an oil layer and an aqueous layer in the collection vessel; d. transferring a portion of the aqueous sample under pressure into a micro-fluidic chip configured for electrophoretic analysis and mixing the aqueous sample with a buffer solution to produce a buffered aqueous solution; e. applying an electro potential difference across the micro-fluidic chip to effectuate a migration of the molecules comprising the one or more tracer chemicals through the micro-fluidic chip based on the charge and size of the respective molecules in the buffered aqueous solution; f. contacting the buffered aqueous solution with an electrophoresis sensor to produce one or more unique chemical identification signals corresponding to the one or more chemical tracers present; g. passing the one or more chemical identification signals produced by the electrophoresis sensor to an electronic data information collection system for indexing and storage in association a unique sample identification code; h. comparing the chemical identification data from the aqueous sample to a stored database of chemical identification data prepared from chemical tracers used in the well completion and identifying any matches; i. transmitting the data corresponding to the matches identified in step (h) to a communication system to produce conditioned data; and j. transmitting the conditioned data to display and/or printing means accessible to well management personnel.