... ABSTRACT Direct assessment (DA) is a valuable tool for risk management used across the pipeline industry. To carry out DA, pipeline operators usually follow NACE (1) standards such as NACE SP0502, SP0206 or SP 0208. Each of these standards requires utilizing an appropriate model to assess...

... environment were quite low for bulk conditions but more than 100 times higher for a thin electrolyte film of 50 µm. A 3D computational model was also used to predict corrosion currents, allowing better account of iR drop due to thinner electrolyte layers and more complex geometry. The predicted currents...

... Probabilistic Modeling of the Relationship between Concrete Crack Width and Corrosion- Induced Mass Loss of Steel Bar Fujian Tang, Chao Li, Hong-Nan Li State Key Laboratory of Coastal and Offshore Engineering, School of Civil Engineering Dalian University of Technology, No.2 Linggong Road, Dalian...

... dynamics (CFD) modeling revealed the same phenomena of vortex and bubbles. The maximum wall shear stress (WSS) was estimated at 180 Pa in CFD modeling at 2,000 rpm. The WSS range of this RCA covered the actual field piping. Three brands of oil-soluble water-dispersible inhibitors were evaluated...

... systems or processes are involved. Internal corrosion in a natural gas storage pool is one such case, with internal corrosion susceptibility depending on interactions among a variety of fluid composition, flow, and material parameters. Bayesian network (BN) modeling was explored as a solution...

... not for the operator's due diligence to run an in-line- inspection device, this ongoing condition would have gone unnoticed. This paper provides the understanding of the need for complete information, data required for AC modeling, corrosion threats and mitigation. AC mitigation modeling was in already in place which...

... Modeling of Microbiologically Influenced Corrosion (MIC) in the Oil and Gas Industry - Past, Present and Future John Wolodko University of Alberta 4-10 Agriculture/Forestry Centre Edmonton, AB, Canada T6G 2P5 Tesfaalem Haile Innotech Alberta 1 Oil Patch Drive, Suite A129 Devon, AB, Canada T9G 1A8...

... ABSTRACT This paper presents a complete methodology that allows selecting optimized solutions for the extension of service-life of concrete structures exposed to aggressive environments. The methodology combines the use of field data and advanced modeling in a comprehensive approach...

... materials and corrosion Downstream Oil & Gas Subsurface Corrosion flowline corrosion riser corrosion underdeposit corrosion corrosion rate modeling corrosion Publication Division permission texas 77084 chloride Pipeline Corrosion well integrity mechanism carbon steel...

... Abstract Bayesian networks (BN) are useful tools for corrosion modeling of complex systems such as oil and gas pipelines. We have developed BN models for assessing risk of pipeline failures due to internal corrosion, external corrosion and third party damages. These models take into account...

... Abstract This paper studies the empirical and correlation modeling of corrosion test-data for detailing C 10 H 18 N 2 Na 2 O 10 (ethylenediaminetetraacetic disodium salt) performance on steel-rebar corrosion in 3.5% NaCl-immersed concrete. The corrosion test-data were measured using three...

... external variables on the potential and current distributions within fastener holes in realistic thin film/galvanic couple configuration between a UNS A97050 component and a stainless steel fastener. A combination of experimental and modeling approaches was used to characterize important external factors...

... Abstract A Comprehensive numerical model has been developed for computing corrosion rates generated by CO 2 saturated aqueous solutions in an internal flow configuration. The fundamental fluid flow is characterized by numerical solutions to Navier-Stokes conservation equations for mass...

... Abstract As the understanding of the causes of corrosion in crude unit overheads has rapidly evolved over the past decade, so have overhead modeling capabilities. The industry has grown over time from recognizing severe corrosion due to hydrochloric acid (HCl) concentrated at the Water Dew...

... pressures, pH and temperature traditionally drive corrosion control philosophies, this lack of observed corrosion was not expected. Thermodynamic modeling has been performed to obtain related pH profiles and to estimate carbon steel corrosion rates, in order to better understand the corrosive behavior...

.... These methods however require several months to years of test time to complete. As an alternative approach computational modeling has the potential to significantly shorten and reduce the cost of testing. The paper gives an overview of the development and experimental validation of a computational model...

... in risk of microbiologically influenced corrosion (MIC) due to high numbers of troublesome methanogens and sulfate-reducing prokaryotes (SRP). Modeling of test results (based on quantitative PCR [qPCR]) when performing a MIC risk assessment showed that the time required for pitting corrosion to start...

... ABSTRACT This paper deals with the evaluation of the subsea pipeline integrity through the combination of potential profile, electric field gradient and the modeling of the electric field originated by the bracelet galvanic anodes by Finite Element Method (FEM). The potential profile as well...

.... ? Multiphase flow and compositional modeling, required to determine flow patterns, velocities (gas, liquid and mix), densities (gas, liquid and mix), water cut, pressure and temperature profiles. ? Thermodynamic modeling, in order to estimate pH and scaling temperature. ? Kinetics modeling, resulting in metal...

.... However another application of modeling is to use it to convert information we can measure into the information we want to know. In particular modeling can be used to expand limited survey data into a prediction of potentials on all structural surfaces, and to provide data on the performance of all anodes...