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Information included here is from a multiclient sponsored research program entitled, "Safe Use Limits for Stainless Steels in Production of Oil and Gas Containing H2S and CO2." This program involved extensive experimental studies which were conducted to better identify the limits of environmental severity (i.e. H2S and CO2 partial pressure, chloride content, pH and temperature) where stainless steels may be useful in oil and gas production tubulars and equipment.

Presented herein are the results from the Task 1 nondestructive testing studies conducted under the a research program entitled, "Combatting Liquid Metal Attack of Aluminum Alloys by Mercury in Ethylene and Cryogenic Gas Plants". This program was organized and conducted by CLI International, Inc., under industrial multiclient support. The goal of the program was to develop preventative and remedial measures and detection and monitoring methods for mercury (Hg) attack of Al-alloys commonly used in the ethylene and cryogenic gas plant service.

Oil and gas well completion schemes often employ heavy brine packer fluids to offset formation pressure in the casing/tubing annulus. The fluids that are normally used are sodium, calcium or zinc salt solutions and range in density from 10 to 20 lbs/gal. Due to their high ionic strength, heavy brines can be quite corrosive, especially in the lower portion of the well where temperatures are higher. Also of concern in situations involving heavy brines is galvanic corrosion i.e., corrosion due to contact of dissimilar metals in a corrosive medium.