Summary Inspection of the below-grade wellhead equipment has shown corrosion damage to the buried landing base, casing spools, and surface casing, especially in water injection and supply wells in onshore fields in Saudi Arabia. In this paper, we describe the problem and examine possible reasons for the occurrence of corrosion. Procedures and standards that have been developed to regularly inspect all wells, perform the required repair work, and provide durable protection with field-applied corrosion-resistant coating are also discussed in detail.
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Farooqui et al. (1998) studied this question.
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