Quantitative evaluation of flow profiles in injection or producing wells is common. Injection wells are most often evaluated with radioactive tracer techniques, while producing wells, where multiphase flow may be encountered, are evaluated using flowmeters with fluid identification devices. | Quantitative evaluation of flow profiles in injection or producing wells is common. Injection wells are most often evaluated with radioactive tracer techniques, while producing wells, where multiphase flow may be encountered, are evaluated using flowmeters with fluid identification devices. |