This standard recommended practice describes the use of iron counts as a corrosion-monitoring method and some common problems encountered when using this method. For several years, NACE Task Group T-1C-7 on Iron Determination examined the problems and successes experienced by oil-producing companies and service companies using iron counts as a corrosion monitor and determined that iron counts on wellhead samples can provide information on the existence of downhole corrosion and the effectiveness of inhibitor treatments. Iron counts can also give information on the corrosion activity in flowlines in waterflood systems and oil-production operations. This standard is a guide for those designing corrosion-monitoring programs as well as those carrying out the programs in the field.
This standard was originally prepared in 1992 by Task Group T-1C-7, a component of Unit Committee T-1C on Detection of Corrosion in Oilfield Equipment. T-1C was combined with Unit Committee T-1D on Corrosion Monitoring and Control of Corrosion Environments in Petroleum Production Operations. This standard was revised by Task Group T-1D-55 in 1998, and is issued by NACE International under the auspices of Group Committee T-1 on Corrosion Control in Petroleum Production.