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In this work, sour TLC was systematically studied in autoclaves with a special holder that exposed one side of the TLC coupon while the back side was exposed to cooling liquid.
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Thermally sprayed CRA coatings can provide a cost-effective corrosion mitigation method for infrastructure in wet supercritical CO2 at 40°C and 80°C. The scales formed on the steel protected it from further corrosion in 10 MPa and 50 MPa CO2.
A corrosion testing program was performed aimed at evaluating scale dissolver packages to determine which package(s) were least corrosive and acceptable for use in wells constructed with 3Cr80 alloyed steel and L80 13 Cr (API 5CT grade) (1) tubulars.
The corrosion behaviour of X65 steel in a mixed 1% H2S (in CO2) brine after exposure to a pure CO2-saturated brine at 40°C. The objective was to identify the scales formed and understand their effect on the corrosion performance of X65 steel upon transition from pure sweet to sour conditions.
We evaluated hydrogen embrittlement (HE) susceptibility of three high-strength alloys including a martensitic stainless steel, a high-strength carbon steel, and a duplex stainless steel. HE testing was according to the Incremental Step Loading Technique of ASTM F1624.
Volumetric Ultrasonic Testing (phased array) thickness measurements performed on the absorber column of a gas dehydration unit (GDU) found laminations and inclusions. The component could not continue in operation unless mitigating actions were taken.
Tests to investigate the effect of soil and disbondment configuration on CP penetration into coating disbondment. Experimental setup measured the pH and potential of pipeline steel under a disbonded coating without disturbing the environment inside.
A polyethylene unit experienced a gas leak within a high pressure tube and shell heat exchanger. Failure analysis revealed that the tube wall loss was beneath residual deposits. Preventative measures and improvements in inspection & cleaning procedures are discussed.
Indirect assessment techniques (special over-the-line potential and soil corrosivity surveys) were applied on an electrically discontinuous effluent sewer land outfall. Critical areas were excavated and direct assessment performed. Mitigation methods were recommended.
Results from studies on corrosion measurement in low conductive, sulfolane-based solutions are presented in this paper. Sulfolane is commonly used in petrochemical processes for extraction of aromatic compounds including benzene, toluene or xylenes.
Corrosion rates of low porosity AM S31603 and AM N06210 in several kinds of acidic solutions were similar to those of wrought alloys respectively, the corrosion rates of AM S31603 and AM N06210 became higher with increasing porosity of each specimen.
Corrosion behavior of commercially pure titanium (UNS R50400, ASTM GRADE 2) was investigated in presence of aggressive, bromides containing solution reported to cause more severe localized corrosion compared to chlorides.