Comparison of the characteristics of corrosion scales covering 3Cr steel and X60 steel in CO2-H2S coexistence environment

Effect of CO2 Partial Pressure on the Corrosion Inhibition of N80 Carbon Steel by Gum Arabic in a CO2-Water Saline Environment for Shale Oil and Gas Industry

“…It can be seen from the Bode (Figure 3b) and phase angle plots (Figure 3c) that the system is characterized by two-time constants at low (LF) and high frequencies (HF). The presence of these two-time constants suggests that the electrochemical reaction process of the N80 carbon steel in a CO 2 saturated saline solution is affected by two state variables i.e., the corrosion products layer and/or the protective adsorptive layer, and electric double-layer, as also reported by Dong et al [33]. For this reason, the EIS plots presented in Figure 3 were fitted with the help of the equivalent circuit (EC) presented in Figure 3d, consisting of the following elements: R s is the electrolyte resistance.…”

“…The EIS parameters are listed in Table 1 and from the small values of χ 2 (i.e., the goodness of fit) it can be said that the EC used to fit the system under investigation was the most appropriate one. of 24 layer, as also reported by Dong et al [33]. For this reason, the EIS plots presented in Figure 3 were fitted with the help of the equivalent circuit (EC) presented in Figure 3d, consisting of the following elements: Rs is the electrolyte resistance.…”

Microstructure Characteristics and Corrosion Behavior of Low‐Alloy High‐Strength Steel used for Armor Layer under Exposure to H2S‐Saturated Solution

“…The quantity of corrosion products on the specimen surface obtained here was smaller than those in other studies. [ 31 ]…”

“…The corrosion product on the steel surface is then shifted to iron sulfide Fe x S y . [ 29–31 ] The surface corrosion behavior in low‐alloy steel is therefore determined by H 2 S. In general, the corrosion process in a H 2 S environment is a complex one. Many researchers have studied the corrosion behavior of low‐alloy steel and found that the corrosion products on the steel surface play a vital role in corrosion resistance.…”

Comprehending the role of the S-phase on the corrosion behavior of austenitic stainless steel exposed to H2S/CO2-saturated liquid and vapor environments

“…Five immersion times were selected to study the corrosion kinetics, namely 4 h, 24 h, 72 h, 240 h, and 720 h. For each immersion time, 3 replicate samples were set. In highsulfur oil and gas fields, the partial pressures of H2S and CO2 can be as high as 28.5 kPa and 100 kPa [26], respectively. In this experiment, the H2S/CO2-saturated solution was used to simulate the corrosion environment in the oil and gas production well site.…”