... to 90oC. After 24 h the oxygen concentration was measured using CHEMetrics reagent ampoules giving a concentration of around 40 ppb. Before placing (flushed mounted) the steel samples in the test section, 81 mL of acetic acid (500 ppm of free HAc) were added to the system. Afterwards, CO2 was injected...

... histogram carbon steel histogram HAc NaCl texas 77084 sour corrosion profile image coupon Effect of Acetic Acid on Sour Corrosion of Carbon Steel Jon Kvarekvål, Gaute Svenningsen Institute for Energy Technology (IFE) Instituttveien 18 2027 Kjeller Norway ABSTRACT An experimental study...

... microstructures at the dissimilar fusion boundary which can be highly susceptible to Hydrogen Assisted Cracking (HAC). A new test has been developed for evaluation of the susceptibility to HAC in DMWs. This test consists of accelerated electrolytic charging with hydrogen of unnotched samples that are subjected...

... ABSTRACT: Based on laboratory and field data, the presence of acetic acid (HAc) in oilfield brines has been found to enhance both the occurrence and the rate of localized CO2 Top-of-Line Corrosion (TLC). However, the fundamental role of this organic compound in CO2 corrosion is still...

..., and a single gas plus a second acid with a soluble iron salt. The latter may be the well known free acetic acid (HAc), but also a potential contribution of the direct diffusion of H+ ions from the bulk medium through the deposit. At the metal surface, this is locally equivalent to a strong acid, i.e. HCl...

..., Norway jamel.amri@ife.no Ricardo P. Nogueira Grenoble INP, SIMAP and LEPMI BP. 75, 38402 St. Martin d Hères, France ABSTRACT The presence of acetic acid (HAc) has been identified as one factor that may contribute to enhance localized top-of-line corrosion attacks in gas condensate pipelines. The role...

... other corrosive compounds like carbon dioxide (CO 2 ) and hydrogen sulfide (H 2 S). Amongst these short chain acids, acetic acid (CH 3 COOH, abbreviated HAc) appears to be the most abundant. A systematic investigation of field data showed that undissociated HAc concentration higher than 0.1-1 mM...

... sweet systems contain organic acids that affect the solution chemistry an Subsurface Corrosion feco 3 HAc materials and corrosion Upstream Oil & Gas concentration flowline corrosion riser corrosion fe 2 mechanism Pipeline Corrosion well integrity corrosion product film corrosion...

... ABSTRACT The corrosion behavior of X65 pipeline steel in solutions containing carbon dioxide (CO2), acetic acid (CH3COOH, abbreviated HAc) and 0.1-0.3 % sodium chloride (NaCl) was investigated on rotating cylinder specimens in glass cells. The tests were carried out at 25°C (1 bar CO2) and 80...

.... Laboratory researches 13 showed that both HAc and Ac- can increase the rate of CO2 corrosion of carbon steel. However, there are only few reports about the effect of acetic acid and acetate on CO2 corrosion of carbon steel, and very little information has been reported in the literature concerning...

... ABSTRACT The role of acetic acid (HAc) on X-65 mild steel carbon dioxide (CO2) corrosion has been investigated in the presence of iron carbonate scale (FeCO3). Free HAc is known to be a source of hydrogen ions and to lead to an increase in mild steel corrosion rates, especially at low pH...

... materials and corrosion well integrity Pipeline Corrosion riser corrosion flowline corrosion Subsurface Corrosion Brine corrosion corrosion product precipitation bicarbonate content threshold free hac corrosion layer acidity Artificial Intelligence saturation Houston hac...

... artificial buffering with another weak acid. It occurs that the pK of acetic acid has the requested order of magnitude materials and corrosion Upstream Oil & Gas hac addition Subsurface Corrosion bar co 2 Pipeline Corrosion well integrity HAc artificial acetate corrosion product ph 4...

... 211 WV Aerdenhout, Netherlands ABSTRACT Weight loss (WL) and linear polarization resistance (LPR) measurements have been used to verify the effect of acetic acid (HAc) on the anodic and cathodic reactions in CO2 corrosion of carbon steel. The experiments were performed using a standard rotating...

... be achieved by processing a lower priced high acid crude (HAC) feedstock for a medium size, 200 KBPD refinery. The annual improvement in GRM can be in the 10?s of millions of dollars, if the costs associated with processing HAC?s are low. Before embarking on a program to introduce cheaper or opportunity...

... Artificial Intelligence materials and corrosion well integrity flowline corrosion Subsurface Corrosion bar co 2 co 2 ppm HAc Upstream Oil & Gas modeling Waard corrosion model partial pressure Pipeline Corrosion riser corrosion experimental data 0 corrosion rate experimental...

... corrosion rate on top of the line, while the thick and porous film formed on the bottom, generally detached from the metal surface, was responsible for the initiation of localized corrosion. Before adding acetic acid (HAc) to the flow loop, a systematic glass cell test program was initiated using...

... successfully. The effectiveness of conventional water soluble organic corrosion inhibitors in controlling CO2 corrosion in the presence of acetic acid (HAc) was investigated in this study. Corrosion inhibitors with three types of chemistries were selected for the study. These included an imidazoline acetate...

... ABSTRACT Top of line corrosion (TLC) takes place in wet gas lines as a result of heavy water condensation due to external cooling of the pipe by river water or seawater. The presence of organic acids in the produced water, mainly acetic acid (HAc), was confirmed in field cases where severe TLC...

... exclusively responsible. The organic acids were therefore forgotten for about 30 years, and research was focused on correlations between corrosivity and the C02 partial pressure, PC02. materials and corrosion Upstream Oil & Gas corrosion layer Pipeline Corrosion well integrity HAc experiment...