Evaluating corrosive potential and impressingeffective cathodic current levels based on surface methodologies exclusively are insufficient to effectively protect most wellbore casings. The time-honored solutions ofinhibited drilling muds, isolating primary cement jobs, squeezecementing, and material considerations do not provide a cost-effectivemeans to address downhole corrosion in the Texas Panhandle region. Accurate emplacement of cathodic protection systems is the key. The CPET* Corrosion and Protection Evaluation Tool effectively measures the corrosive profile and corrosive rates in the wellbore environment. This allows the operator to optimize his corrosion prevention expenditures.

Keywords:
evaluation, corrosion rate, wellbore, variation, current flow, pipe, resistance, texas panhandle, optimization, protection
Subjects:
Casing and Cementing, Production Chemistry, Metallurgy and Biology, Pipelines, Flowlines and Risers, Formation Evaluation & Management, Casing design, Materials and corrosion, Well Integrity, Subsurface corrosion (tubing, casing, completion equipment, conductor), Corrosion inhibition and management (including H2S and CO2)
Copyright 1992, Society of Petroleum Engineers
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