...16549 Sulfide Stress Cracking of Low Alloy Steels for Oil and Gas Production: Revisiting the Effect of Ni as an Alloying Element Dannisa R. Chalfoun Teresa E. Perez Instituto Sabato, CONICET, Y-TEC Instituto Sabato, UNSAM Av. Gral. Paz 1499, San Martín Av. Gral. Paz 1499, San Martín Buenos Aires...

... for Resistance to Sulfide Stress Cracking (Adapted from Table 1.2 in API 14E 1975) 4 H2S Partial H2S Concentration Required Material Maximum Hardness of Acceptable Pressure in Aqueous Solution Specification Carbon, Low, and Medium Alloy Steels - (psia) (ppm or mg/L) (HRC) greater than 0.05 greater than 15 NACE...

... Abstract Due to their low ratio of cost versus performances, quenched and tempered (Q&T) high strength low alloyed steels are widely used as tubular goods. For several decades, steel suppliers and academics are investigating the mechanisms of sour corrosion of these materials. Several...

... in the manner shown in Figure 5, and metallographic examination was conducted on the cross section to look for evidence of cracking, stress accelerated corrosion and/or roughening of the surface. Following exposure to the bio-oils, the carbon steel and 2¼ Cr-1 Mo samples were observed to have the largest amount...

... corrosion resistant samples were lower bainite and these were presented as being more anodic. Key words: corrosion, low alloy steels, sucker rods, inclusions, microstructure, banding, stereology, light optical microscopy © 2021 Association for Materials Protection and Performance (AMPP). All rights reserved...

...16887 Insights Into Hydrogen Embrittlement (HE) Susceptibility of Martensitic Steels Using Finite Element Analysis (FEA) And Experiments. Tuhin Das Salim V. Brahimi Department of Materials Engineering, McGill Department of Materials Engineering, McGill University University Montreal, Quebec, H3A...

... ABSTRACT Selection of effective corrosion inhibitors for oil and gas fields often requires extensive laboratory testing to evaluate inhibitor performance at simulated field conditions. Due to the availability of field materials and difficulties associated with transportation, carbon steels...

... ABSTRACT Mildly acidic water containing dissolved H 2 S presents a strong risk in the cracking of low-carbon steels. Several studies on H 2 S cracking mechanisms have shown that the main driving force is linked to the ability of H 2 S to promote hydrogen entry into the bulk material. Standard...

... to the structure ( Figure 1 ). Additional coated steel platforms were available around the upper portions of the tower to provide access for inspection. The south face of the tower is located in front of a pressure control structure (approximately 120 feet (36.6 m) away) with 10 Howell Bunger valves that allow...

... ABSTRACT The corrosion performance of 3Cr-N80 and N80 steels in simulated oil field formation water with CO 2 partial pressure of 0.23 MPa at 80°C was investigated using weight loss measurement and surface characterization techniques. The results showed that 3Cr-N80 steel exhibited better...

... of droplet corrosion in dense phase CO 2 at high pressure and low temperature, further studies on factors that affect wettability and resulting corrosion behaviors of transport pipeline steels are needed. In this study, effects of surface morphology were investigated by varying surface roughness of carbon...

... to its high sensitivity and variability regarding experimental conditions. 2 effective diffusion coefficient texas 77084 diffusion hydrogen Publication Division severe plastic deformation Houston grain boundary hydrogen trap grain size diffusivity steel permission dislocation density...

... ABSTRACT Millions of gallons of high-level radioactive waste are stored in underground carbon-steel storage tanks at the Hanford site. The waste chemistries are alkaline with pH between 11 and 14. Carbon steel is expected to become passive and undergo passive dissolution under the alkaline...

... of these buildings is most commonly dictated by corrosion of the embedded reinforcing steel cause by carbonation. Challenges with carbonation comes down to dealing with the length of time before corrosion will be initiated and then how long it takes in the propagation phase before damage to the concrete occurs...

... materials and corrosion well integrity texas 77084 Publication Division permission Pipeline Corrosion Subsurface Corrosion cathodic protection steel flowline corrosion Houston manuscript piping simulation Midstream Oil & Gas energy pipeline energy sector railroad pipe installation end...

... on a variety of materials including a number of polymers and carbon steel. Results show that the ranking of material performance varies with test method used, and highlights the importance (and difficultly) in selecting an appropriate test method that represents actual service conditions. For the second part...

...) Control of flow velocity and associated wall shear stress produced by the flow media Optimization of in-service inspection and monitoring in oil refineries (process adjustments: total sulfur, TAN, temperature) Subsurface Corrosion organo-sulfur compound steel Pipeline Corrosion well...

... ABSTRACT Failure of Oil Country Tubular Goods (OCTG) steels in highly sour applications often stems from corrosion and Environmentally-Assisted Cracking (EAC). EAC of high strength low alloy carbon steels, typically used in well completions, has been a problem of major concern...

... ABSTRACT Oxygen diffusivity is a key parameter in modeling corrosion rate of steel in concrete. Measuring diffusivity can be a complicated and slow process, in conditions or geometries not always representative of those encountered by rebar in concrete. A method is introduced that eliminates...

... ABSTRACT Corrosion of carbon steel in the presence of H 2 S is an important topic in the oil and gas industry that has been studied for more than fifty years. Removing this compound results in not only an increase in the corrosion resistance of carbon steel, but also an improvement...