... to both general corrosion and localized corrosion. Corrosion inhibitor CO₂-Corrosion surfactant corrosion inhibition imidazoline Dissolved oxygen DO corrosion LPR INTRODUCTION Over the last several decades, corrosion inhibitors are one of the most important and widely utilized asset...

...Table 3 shows variation among bitumen thicknesses, and the reason is no different from those given in LPR setup. The test coupons were exposed to dissolved oxygen concentration of about 5 ppm in a model brackish water with average pH value of about 8.8. The equation usually used to obtain...

... and eliminating common errors and artefacts. Corrosion inhibitor screening testing laboratory procedures LPR INTRODUCTION Generic CI – Minimum Effective Dose Determination Effect of Scaling Ion Removal It is common practice in CI testing to alter the brine chemistry to eliminate scaling tendencies...

... environment. Electrochemical techniques, Linear Polarization Resistance (LPR), Potentiodynamic Polarization and Electrochemical Impedance Spectroscopy (EIS), were used to characterize the electrochemical behavior of API 5L X65 carbon steel in a 3.5 wt% NaCl solution with 10 ppm of hydrogen sulfide...

..., it is useful to measure the real corrosion rate without external current. Therefore, approximately at the end of each month, the power supply was set off for 3 days, and the corrosion rate of each steel straw was measured using linear polarization resistance (LPR) as shown in Figure 5b . The LPR test...

... was recorded using an optical spectrum analyzer (OSA), and the pitting corrosion rate of the steel straw was measured with linear polarization resistance (LPR). After corrosion tests, all the steel straws were taken out of the solution and the corrosion pits were observed using an optical microscopy. Finally...

... measurements. Preliminary results show some degree of correlation between the different corrosion rates associated with different AE hit rate activity taking place during the corrosion process. LPR E_corr i_corr E_appl AE AE hits AE rate hits/sec dB_AE...

... the dose until a suitable dose rate, to mitigate corrosion to acceptable levels, is achieved. Weldment corrosion tests on a 1% nickel weld specimen were performed to investigate the advantages and drawbacks of this methodology for determining dose rates. Coupled Linear Polarisation Resistance (LPR...

... a relatively lower resolution (1/1000 of the wall thickess) because the wall is thicker than an intrusive probe element. Figure 2 shows a combined probe with one ER element and 3 bar shaped elements for electrochemical measuring (LPR elements). The rates of the anodic and cathodic process, the anodic...

...Unfortunately, less progress has been made when it comes to applying this technique in studying CO₂ flow-induced corrosion and erosion-corrosion degradation of UNS K03014 pipeline materials. Hence, this study implements the AE technique coupled with linear polarization resistance (LPR...

... that have reported chloride thresholds, a relative high chloride concentration was first added to the solution when the more corrosion resistant alloys were exposed. In this investigation, linear polarization resistance (LPR) and open circuit potentials (OCP) were used as techniques to monitor corrosion...

... and it was not replaced over the experimental time of 14 weeks. Figure 1 gives an overview on the experimental test facility. ship ballast tank MIC biofilm LPR PCR INTRODUCTION Biocorrosion or microbiologically influenced corrosion (MIC) is defined as the result of the interactions between metal surfaces...

... this, a proposed overall treating strategy is identified. Iron sulfide waste water pipeline H₂S LPR under deposit corrosion sidesteam chemical testing INTRODUCTION In oil and gas production operations the integrity of any fluid transportation systems is paramount. The consequences of any failures...

... LPR under deposit corrosion INTRODUCTION In many onshore operations, the integrity of a waste water disposal pipeline can be extremely important since any failures of the pipeline may directly result in a shutdown of the entire upstream oil and water separation processes. The main water source...

... polarization resistance (LPR) measurements. Significant findings include the magnitude of localized attacks with and without the presence of corrosion inhibitors. Oxygen corrosion Iron sulfide Waterflood H₂S LPR Slightly sour INTRODUCTION The success of a waterflood system is dependent...

... on the same shaft and used for weight loss and electrochemical LPR measurements. This new design allows the two RCEs to be subjected to the same shear stress during the experiments. The shear stress can be controlled by varying the rotational speed through a rotator controller. A three-electrode system...

...Oleic imidazoline CTAB phosphate ester LPR CO₂ corrosion surface structure iron carbonate FeCO₃ INTRODUCTION Carbon steel pipelines are commonly employed in the transport of oil and gas. Carbon steel piping and process equipment are subject to corrosion caused...

...* This work was done at CC Technologies – A DNV Company, Dublin, Ohio. Test Procedures Abstract Corrosion behavior of 0.5% chromium steel with or without the presence of commercial inhibitors was investigated electrochemically including EIS (Electrochemical Impedance Spectroscopy) and LPR...

... corrosion coupons or LPR. Electrochemical Noise corrosion monitoring corrosion coupons LPR high density polyethylene (HDPE) liners INTRODUCTION The use of Electrochemical Noise (EN) is a well documented corrosion monitoring technique in a number of industries. Edgemon et al has documented the use of EN...

... oxygen accelerated corrosion MIC LPR cathodic polarization curves corrosion inhibitors INTRODUCTION The most common method of secondary recovery from oil producing formations is waterflooding. ^{1 , 2} Many papers have dealt with the corrosion properties of this water, which may be from...