Dr.Mohammed Saleh Al.Ansari

The Importance of Corrosion Monitoring

April 15, 2010

Corrosion problems occur in a wide range of oil-water systems, in production, transportation, storage and use of hydrocarbons. The description here of a system as oil-water includes those that are intended to be dry but where the ingress of small amounts of water is difficult to prevent. In dry hydrocarbons corrosion is not a problem. (  hit on here to download the report – 141 pages)

In terms of the corrosion processes occurring oil production systems can be divided into “sweet” and “sour” systems. In the former corrosion is largely due to CO₂ present whereas in the latter H₂S, present in addition to CO₂, is the prime corrosive agent. There is, however, no rigid definition of how much hydrogen sulphide is required to constitute a sour system. In general there is a tendency for reservoirs to sour with time, especially if water injection is used 

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