...Abstract Susceptibility of Grades 23 and 29 titanium Tapered Stress Joint (TSJ) forgings to gas phase methanolic Stress Corrosion Cracking (SCC) was measured in deaerated, dry 0-0.5 wt.% and saturated methanol-containing methane gas environments at 25°C in a two phase laboratory program. Phase 1...

... of the cooling liquid. The effect on TLC of various parameters like bulk temperature, condensation rate, organic acids, MEG and methanol was studied. Methanol was clearly the most important factor affecting TLC corrosion. Although the mass loss corrosion rates increased somewhat with methanol, the major effect...

... and condensation rate Abstract Although relatively few failures associated with sour top of line corrosion (TLC) have been reported in field, it has been recognised as a corrosion threat, particularly if methanol is present. The toxicity and flammability of H₂S, however, puts significant health...

... modes for UNS R55400 pipe exposed to relevant oilfield production environments which include sour well fluid brines, a heavy chloride/bromide brine well completion fluid, injected methanol, organic acid-and HCl-based well acidizing solutions, and seawater. The alloy’s elevated reducing acid chloride...

... an intergranular path. The remaining 4% of the wall thickness failed due to fatigue crack propagation. While I-SCC is extremely rare in underground petroleum pipelines, all other plausible cracking mechanisms were eliminated through a detailed metallurgical analysis. Methanol was suspected to be the agent...

... sources Methanol stress-corrosion cracking Three and one-half inch (8.9 cm) long NACE TM0198-2004 tensile test specimens with a 1.00 inch (2.54 cm) long reduced gauge section of 0.125 inch(0.317cm) diameter were machined from ASTM A353 sample plates from the failed tank and a new ASTM A553 sample...

...(2) 2 H 2   S + O 2 → 2 H 2 O + 1 / 4   S 8 Methanol creates issues by promoting corrosion in the system due to its ability to interfere with the formation of protective films. It is also known to create corrosion issues because adding methanol adds oxygen...

...Abstract The effect of water in a methanol solution containing 0.42 wt% LiCl on the corrosion behavior of type 316L stainless steel was evaluated by anodic polarization and electrochemical impedance spectroscopy (EIS) at 423K and 473K. The addition of water to the methanol solution increased...

...Abstract Methanol is commonly used in the oil industry as a thermodynamic hydrate inhibitor. In world regions with extended winter seasons, significant amounts of methanol are injected into wells and pipelines. Previous studies have demonstrated that the presence of methanol in sour conditions can...

... for acid esterification, the sulfuric acid tends to migrate to the water phase and out of the methanol 6 . This migration may have the effect of unforeseen corrosion as a result of higher than anticipated acid concentration. References to sodium hydroxide, potassium hydroxide, sulfuric acid...

...-aqueous environments. There have been some studies on the role of methanol on pitting of stainless steels ⁵ . It has been shown that the addition of methanol to Water-Cl^- results in decreasing the passivity of stainless steels ⁶ . However, there is no clear explanation...

... paragraph. Sources Dissolved oxygen in injected methanol at concentration of about 20 ppm) was not a significant contributor as 1 m /d of methanol contained approximately only 20 g/d of oxygen. A major source of oxygen was identified entering the process via the stripping gas compressor seals. The process...

...Abstract During start-up of sour gas wells methanol is added in order to prevent hydrate formation in the piping. Earlier own results and literature data showed, that SSC is likely to occur at carbon steel if methanol is present in sour wet media. Therefore, the SSC risk of pipeline steel...

... by a major Mobile Bay gas producer, included assessment of long-term pipe property and metallurgical stability at well temperature, and long-term corrosion resistance in this sour production brine, injected organic acidizing solutions, liquid scale inhibitor, and methanol solvent for hydrate control...

... of glutaraldehyde and ethylene and propylene glycol were prepared. Those solutions were then stored at room temperature and slightly elevated temperature, then assayed for residual glutaraldehyde. ⁷ The results are shown in Table 1 . As was the case with methanol, glycol’s also cause a fairly rapid...

... 273 x 19 1,057 1.9 4.4 64 89 x 9.4 292 1.3 3.6 36 Ti-3Al-2.5V-Ru 229 x 13 264 1.5 3.6 61 Abstract Conservative, practical guidelines for the minimum water content required to prevent methanolic stress corrosion cracking (SCC) of Ti-6Al-4V-Ru and Ti-3Al-2.5V-Ru alloy tubulars have...

... cracking) ⁴ . Much less information is available in the literature on the corrosion effect of H₂S in nonaqueous solvents like alcohols. H₂S containing alcohols (mono, di- and triols) are encountered in many industrial systems. A prominent example is methanol which is used...

... washed with methanol and dried with forced air prior to being placed in a Princeton Applied Research flat specimen holder. The sample was then placed in the cell for testing. The total exposed area for these specimens was 0.93 cm². The methanol used in this study was Spectrophotometry grade...

...Corrosion Mitigation Strategy Temperature 77° C (170° F) CO₂ partial pressure 3.4 bar (50 psi) Test medium 10 and 33% methanol in deionized water or in 7.5% NaCl solution Inhibitor Conc. 0, 100, 250 and 500 mg/l Initial screening of the inhibitors was performed using static...