Optimization of Tracer Test Design-Practical Applications

摘要

A proposal to carry out a well to well chemical tracer test n the pilot area of a field with possibilities to implant an nhanced oil recovery(miscible CO2 injection)with two rimary objectives:Detect injecting wells that cause salted water leak at 200 meters deep in well C1001.Monitoring the injected water front behavior in each injecting well inside pilot area to define if there is vertical communication between two reservoirs.Additional information could be possible to obtain with his tracer test as to identify the source of produced water in ach producing well associated to each injecting well tagged,oreover,to measure irruption time,to identify channels or arriers that affect the fluid movement,to fix the main irection of front movement,to evaluate the front distribution nside each injection pattern in tested area and give support to ield characterization in the pilot area.To achieve these objectives,it was necessary evaluate the racers program proposed that start with selection of injection cheme with six injecting wells tagged(one in reservoir A,our in reservoir B and one in both reservoirs)with six ifferent chemical tracers.We show the results of revision and analysis of each test nclude in tracers program and the investigation ratio djustment used to monitoring protocol design,in which there ere added several producing wells to be sampling and nalyzing located inside the investigation ratio of each njecting well tagged with chemical tracer.