Hinds, G; Turnbull, A (2010) Novel multi-electrode test method for evaluating inhibition of underdeposit corrosion. Part 1: Sweet conditions. Corrosion, 66 (4). 046001

Full text not available from this repository.

Abstract

A multi-electrode test method has been developed to assess the performance of corrosion inhibitors under sand deposits for oil and gas applications. The electrode array is mounted in a cup under a layer of sand and coupled to an external carbon steel electrode in such a way that the galvanic corrosion current at each electrode can be monitored. The test method was demonstrated on two different inhibitors exposed to a simulated field brine at 60 °C under sweet (CO2) conditions. In these sweet solution tests, replenishment of inhibitor concentration at regular intervals to reflect conditions in service provided a more severe test of inhibitor performance. The adoption of the multi-electrode array highlighted the importance of statistical variations in determining the worst-case corrosion rate, which might otherwise not be identified in conventional tests, and enabled assessment of the effect of different levels of pre-corrosion in a single test.

Item Type:	Article
Keywords:	carbon steel, deposit attack, galvanic corrosion, inhibitors
Subjects:	Advanced Materials Advanced Materials > Corrosion
Last Modified:	02 Feb 2018 13:15
URI:	http://eprintspublications.npl.co.uk/id/eprint/4620

Actions (login required)

View Item