METHOD AND SYSTEM FOR USING TRACER SHOTS FOR ESTIMATING INFLUX VOLUMES OF FLUIDS FROM DIFFERENT INFLUX ZONES TO A PRODUCTION FLOW IN A WELL

摘要

A method for estimating influx volumes of fluids to a production flow in a well with two or more influx locations along the well includes arranging tracer sources with unique tracer materials in fluid communication with two or more of the influx zones, each tracer material having a predefined short duration release dose to the fluids in the well, allowing the tracer sources to release the tracer material to the fluids at a given release instant, after the release instant, consecutively collecting samples of the production flow at the topside, analysing the samples for identifying types of tracer material and concentration of the identified tracer materials, based on the concentrations and their sampling sequence and the well geometry, sequence of the separate influx zones, calculating the influx volumes from transient flow models using the calculated influx volumes as parameters for controlling the production flow or for characterizing the reservoir.