This paper is an overview of coated and non-coated well casings in corrosive formations. Failure trend studies of externally un-coated well casings indicate a prevalence of external casing failures due to corrosive formations. Some casing failures have been documented in as little as twenty-four months. Well casings coated with advanced technology epoxies have improved the service life of these wells significantly. This paper describes the key learnings from these applications.

Keywords:
materials and corrosion, riser corrosion, Pipeline Corrosion, Subsurface Corrosion, H2S management, Corrosion Management, flowline corrosion, Production Chemistry, Upstream Oil & Gas, Thickness
Subjects:
Production Chemistry, Metallurgy and Biology, Pipelines, Flowlines and Risers, Materials and corrosion, Well Integrity, Subsurface corrosion (tubing, casing, completion equipment, conductor), Corrosion inhibition and management (including H2S and CO2)
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2014. Unconventional Resources Technology Conference
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